Home › Formats
Every file type Analyser can open.
Analyser reads and identifies 1428 file formats, grouped by category below. Each is read straight from its bytes in your browser - drop a file on the home page to analyse it; nothing is uploaded. A Full badge means the format opens in a dedicated viewer with deep metadata; an ID badge means it is identified and its header metadata is read.
Prefer a focused view? with category filters.
Images111 formats
Photo
JPG JPEG JIF JFIF PNG GIF WebP HEIC HEIF BMP TIFF AVIF JXL ICO MPO THM
Full
View EXIF, GPS, camera settings, histograms, dominant colours, OCR text, and AI-generation markers in JPG, PNG, HEIC, WebP, GIF, BMP, TIFF, AVIF and JPEG XL images. Detects computational-photo wrappers (Apple Live Photo, Google and Samsung Motion Photo, Ultra HDR gain maps), opens THM movie-thumbnail files, and extracts every embedded image from multi-image files - all sizes in an ICO, both halves of an MPO stereo pair, and every page of a multi-page TIFF.
Per-format guides: .JPG · .JPEG · .JIF · .JFIF · .PNG · .GIF · .WebP · .HEIC · .HEIF · .BMP · .TIFF · .AVIF · .JXL · .ICO · .MPO · .THM
RAW photo
RAW ARW CR2 CR3 NEF DNG RAF RW2 ORF PEF SR2 SRW X3F 3FR IIQ MRW NRW RWL CRW GPR FFF MEF MOS KDC DCR DCS ERF SRF
Full
Open camera RAW files from Sony (ARW), Canon (CR2, CR3, CRW), Nikon (NEF, NRW), Fujifilm X-Trans (RAF), Sigma Foveon (X3F), Olympus (ORF), Panasonic (RW2), Pentax (PEF), Adobe DNG and many more. Reads full EXIF and lens data, the true sensor resolution, GPS and histograms, recovers the Sony and Nikon shutter actuation count, and develops the RAW - decoding the sensor to a full-resolution image, or extracting the embedded preview when a true demosaic is not available.
Per-format guides: .RAW · .ARW · .CR2 · .CR3 · .NEF · .DNG · .RAF · .RW2 · .ORF · .PEF · .SR2 · .SRW · .X3F · .3FR · .IIQ · .MRW · .NRW · .RWL · .CRW · .GPR · .FFF · .MEF · .MOS · .KDC · .DCR · .DCS · .ERF · .SRF
XMP sidecar
XMP
Full
Open the XMP sidecar (.xmp) that Lightroom, Adobe Camera Raw and darktable write next to a raw photo to keep its edits while the raw stays untouched, and see the develop recipe visualised: the tone curve drawn as a real curve, the Basic-panel sliders (exposure, contrast, highlights, shadows, whites, blacks, texture, clarity, dehaze, vibrance and saturation) as bipolar bars, the HSL colour mixer, and the crop rectangle. Reads the editor and process version, the paired raw file, white balance, star rating and colour label, the camera and lens metadata copied from the raw, and the catalog title, keywords and copyright - all in the browser. A darktable sidecar lists the processing modules its edit switches on.
Per-format guides: .XMP
RAW sidecars / cinema
AAE PP3 COS COF COP DOP NKSC R3D BRAW CRM ARI CINE FPF EIP BAY PXN RWZ
ID
Identify camera RAW edit sidecars - Apple Photos adjustments (AAE), RawTherapee (PP3), Capture One (COS), DxO PhotoLab (DOP) and Nikon NX Studio (NKSC) - reading the applied-edit recipe, plus cinema and rare camera RAW: REDCODE (R3D), Blackmagic (BRAW), Canon Cinema RAW Light (CRM), ARRIRAW (ARI), Phantom CINE and FLIR thermal (FPF).
Per-format guides: .AAE · .PP3 · .COS · .COF · .COP · .DOP · .NKSC · .R3D · .BRAW · .CRM · .ARI · .CINE · .FPF · .EIP · .BAY · .PXN · .RWZ
Images (more)
TGA QOI PPM PGM PBM PNM PAM PCX FF FARBFELD WBMP XBM XPM RAS SGI BW HDR DDS EXR JP2 J2K JPF JPX JPC JXR WDP HDP EPS PS WMF EMF EMZ ICNS CUR ANI MNG LOTTIE FLIF CGM PICT PCT EPSF EPSI J2C JBIG JBIG2 JB2 ICB VST
ID
Decode and preview extra still-image formats in pure JavaScript - Truevision TGA, QOI, Netpbm (PPM/PGM/PBM), PCX, farbfeld, WBMP, XBM/XPM, Sun Raster and SGI are fully rendered - and read header metadata from codec-heavy formats: Radiance HDR, DirectDraw Surface (DDS) game textures, OpenEXR, JPEG 2000, JPEG XR, EPS/PostScript (including the preview image the authoring program stored inside the file - the TIFF a DOS EPS header points at, or an EPSI hexadecimal bitmap), Windows WMF/EMF metafiles, Apple ICNS icons, CUR/ANI cursors, MNG and Lottie animations.
Per-format guides: .TGA · .QOI · .PPM · .PGM · .PBM · .PNM · .PAM · .PCX · .FF · .FARBFELD · .WBMP · .XBM · .XPM · .RAS · .SGI · .BW · .HDR · .DDS · .EXR · .JP2 · .J2K · .JPF · .JPX · .JPC · .JXR · .WDP · .HDP · .EPS · .PS · .WMF · .EMF · .EMZ · .ICNS · .CUR · .ANI · .MNG · .LOTTIE · .FLIF · .CGM · .PICT · .PCT · .EPSF · .EPSI · .J2C · .JBIG · .JBIG2 · .JB2 · .ICB · .VST
Audio81 formats
Sound
MP3 WAV M4A M4B AAC FLAC OGG OPUS AIFF WMA AMR AC3 DTS MKA
Full
Inspect the waveform, spectrogram, codec, bitrate, channels, and tags of MP3, WAV, FLAC, M4A, AAC, OGG, and Opus audio.
Per-format guides: .MP3 · .WAV · .M4A · .M4B · .AAC · .FLAC · .OGG · .OPUS · .AIFF · .WMA · .AMR · .AC3 · .DTS · .MKA
Lyrics
LRC
Full
Parse .lrc timed-lyric files: read the artist/title/album ID tags and every timestamped line.
Per-format guides: .LRC
MIDI
MID MIDI
Full
Parse Standard MIDI Files: format, tempo (BPM), time signature, General MIDI instruments, track names, note counts, and duration.
Music production
FLP LOGIC LOGICX PTX CPR BAND
ID
Identify DAW project files and read what their formats will give up: FL Studio (FLP) has its event stream walked for the FL version, tempo, title, author, genre, comment, pattern and channel names, the plugins it loads and the samples it references - but not its clip positions, which live in data events whose layout varies between FL versions. Logic Pro, Pro Tools (PTX) and Cubase (CPR) are identified. Ableton Live and Reaper projects open with a drawn arrangement - see DAW project above.
Per-format guides: .FLP · .LOGIC · .LOGICX · .PTX · .CPR · .BAND
Surround audio
EC3 EAC3 THD MLP Atmos
ID
Identify Dolby surround codecs - Digital Plus (E-AC-3), TrueHD, MLP, and Atmos - with channel-layout detection (5.1, 7.1).
Audio (more)
APE WV TAK TTA OFR DSF DFF MPC CAF RF64 BW64 W64 AU SND VOC BWF SPX AWB QCP 3GA M4R GSM MP2 MP1 SF2 SF3 SFZ DLS RMI MMF GIG RTTTL IMY SAP NSF NSFE SPC VGM VGZ GBS AY YM AUP AUP3 PSF SHN sfArk PSF2 miniPSF MP+ MPP MQA MMD PKF
ID
Identify many more audio formats: lossless/hi-res codecs (Monkey’s Audio, WavPack, TAK, True Audio, DSD/SACD, Musepack), pro containers (Core Audio, RF64/BW64, Wave64, Sun AU, Broadcast Wave with timecode), speech/mobile (Speex, AMR-WB, QCP, 3GA, M4R, GSM), MPEG Layer I/II, instrument banks (SoundFont, SFZ, DLS, RIFF MIDI, GigaStudio), ringtones (RTTTL, iMelody, SAP), tracker modules (MOD, XM, IT, S3M, OctaMED, 669, Oktalyzer), chiptunes (NES NSF, SNES SPC, VGM, Game Boy GBS, AY, YM) and Audacity projects. DJI waveform peak sidecars (PKF - the overview a DJI recorder writes beside its audio) are drawn as a waveform; Adobe Audition peak caches (also PKF) are identified.
Per-format guides: .APE · .WV · .TAK · .TTA · .OFR · .DSF · .DFF · .MPC · .CAF · .RF64 · .BW64 · .W64 · .AU · .SND · .VOC · .BWF · .SPX · .AWB · .QCP · .3GA · .M4R · .GSM · .MP2 · .MP1 · .SF2 · .SF3 · .SFZ · .DLS · .RMI · .MMF · .GIG · .RTTTL · .IMY · .SAP · .NSF · .NSFE · .SPC · .VGM · .VGZ · .GBS · .AY · .YM · .AUP · .AUP3 · .PSF · .SHN · .sfArk · .PSF2 · .miniPSF · .MP+ · .MPP · .MQA · .MMD · .PKF
Video84 formats
Video
MP4 MOV AVI MKV WebM WMV FLV 3GP 3G2 MPG MPEG MTS M2TS TS VOB OGV H264 264 AVC H265 265 HEVC
Full
Read the container, codec, resolution, and frame rate of MP4, MOV, MKV, AVI, and WebM video, step through frames, and extract the audio track. Raw H.264/H.265 elementary streams (.h264/.265) are remuxed to MP4 in-browser so they play too, as are AVCHD camcorder files (.mts/.m2ts) - the video is copied and the audio transcoded to AAC. Sony cameras (Alpha, FX, RX) that embed a gyro / accelerometer "rtmd" timed-metadata track have that inertial data decoded and plotted - the same gyroscope and accelerometer samples Gyroflow and Catalyst Browse use to stabilise footage - alongside the ISO, white balance and capture time.
Per-format guides: .MP4 · .MOV · .AVI · .MKV · .WebM · .WMV · .FLV · .3GP · .3G2 · .MPG · .MPEG · .MTS · .M2TS · .TS · .VOB · .OGV · .H264 · .264 · .AVC · .H265 · .265 · .HEVC
Colour LUT
CUBE LOOK
Full
Open colour LUTs (.cube - the Adobe/Iridas/Resolve 3D and 1D look-up tables) and Adobe SpeedGrade / Iridas looks (.look) and see exactly what they do: the neutral tone-response curve that reveals the contrast and colour cast, a before/after of a hue x brightness chart and memory colours (skin, sky, foliage) pushed through the LUT, and an interactive 3D scatter of the colour cube it defines. A .look is read as the SpeedGrade grade stack (basic correction, tints, wheels, curves, secondaries, vignette and more) with the baked 3D LUT it carries visualised the same way. Reads the title, grid size, input domain and extended (HDR / scene-linear) output range, all in the browser. The same .cube extension that Gaussian uses for volumetric DFT data is detected and identified separately.
Editing timeline
EDL FCPXML OTIO
Full
Visualise editing timelines exported from Premiere Pro, Final Cut Pro, DaVinci Resolve and Avid: CMX3600 EDL, Final Cut Pro FCPXML and OpenTimelineIO (OTIO). Renders the tracks with clip blocks positioned by timecode, plus durations, clip names and frame rate.
After Effects
AEP AET
Full
Open Adobe After Effects projects (.aep) and templates (.aet) in the browser. Analyser walks the RIFX chunk tree to rebuild every composition timeline - each layer drawn as a bar positioned by its in and out point, colour-coded by footage, pre-comp, audio and shape, with 3D layers marked - and reads each comp's dimensions, frame rate, duration and layer count. The After Effects version that created and last saved the project (and the create/modify dates) are read from the embedded XMP metadata, alongside the list of footage and source files the project references.
Gyro log
GCSV
Full
Open Gyroflow .gcsv IMU logs - the gyroscope and accelerometer telemetry used to stabilise footage. Analyser applies the file's own scale factors and plots the three-axis gyroscope (deg/s) and accelerometer (g) against time on a zoomable timeline you can hover to read off values.
Per-format guides: .GCSV
Premiere Pro
PRPROJ PREL
Full
Open Adobe Premiere Pro (.prproj) and Premiere Elements (.prel) projects in the browser. Analyser inflates the gzip-compressed PremiereData XML and walks the sequence, track and clip objects to rebuild every timeline - each clip drawn as a bar positioned by its in and out point across stacked video and audio tracks, just like the Premiere editor - reading each sequence's resolution, frame rate, duration, track and clip counts, plus the project version, media-item count and the names of the clips the timelines reference.
DaVinci Resolve
DRP DRT
Full
Open Blackmagic DaVinci Resolve project (.drp) and timeline (.drt) exports in the browser. A .drp is a ZIP of database XML; Analyser unzips it and walks the SeqContainer track and clip objects to rebuild every timeline - each clip drawn as a bar positioned by its Start and Duration across stacked video and audio tracks, just like the Resolve edit page - showing source filenames, paths, frame rates and timecode, plus the project name, Resolve version, the media pool bins and the source media the timelines reference. Titles, generators and transitions are colour-coded.
VEGAS Pro
VEG VF
Partial
Open Sony / MAGIX VEGAS Pro (.veg) and VEGAS Movie Studio (.vf) projects in the browser. A .veg is a Sonic Foundry "RIFF GUID" container; Analyser reads the VEGAS version, the project summary (author, copyright, contact), every media generator and video FX used by its plugin id and friendly name (Titles & Text, Solid Color, Cookie Cutter and more), the actual title and text content decoded from the embedded RTF, and the source media and template file paths the project references.
Subtitles
SRT VTT ASS SSA SUB
Full
Parse subtitle cues and timing from SubRip (SRT), WebVTT, ASS/SSA, MicroDVD and SubViewer (.sub): cue count, on-screen time, and a full timed cue list. MicroDVD frame timings are converted to time using the declared or assumed frame rate; binary VobSub .sub image subtitles are identified.
Video editing
AEPX WFP
ID
Identify and read video-editing project files: the After Effects XML project (AEPX); Wondershare Filmora (WFP); and CapCut drafts (draft_content.json) - canvas resolution, duration, tracks and material counts. After Effects (AEP, AET), Premiere Pro (PRPROJ, PREL), DaVinci Resolve (DRP, DRT) and VEGAS Pro (VEG, VF) projects now open in full viewers - see those entries.
Video / streaming (more)
M3U8 M3U MPD ISM ISMC F4M ASX WPL XSPF PLS MXF GXF LXF DV DIF ASF DVR-MS RM RMVB DIVX F4V INSV INSP LRV GIFV IVF Y4M M2V M1V MPV H264 H265 HEVC AVC OBU M2P M2T TRP WTV OGM NUT DPX CIN DAV YUV
ID
Inspect streaming manifests and video containers: HLS/DASH/Smooth Streaming/HDS manifests and playlists; pro/broadcast MXF/GXF/LXF/DV; ASF/.dvr-ms and RealMedia; DivX/F4V/Insta360/GoPro proxies/GIFV; raw elementary streams (IVF, Y4M, MPEG-1/2, H.264/H.265 SPS, AV1 OBU); MPEG program/transport and PVR/DVB recordings; Windows Recorded TV, Ogg Media, NUT; DPX/Cineon/Dahua/.yuv identified.
Per-format guides: .M3U8 · .M3U · .MPD · .ISM · .ISMC · .F4M · .ASX · .WPL · .XSPF · .PLS · .MXF · .GXF · .LXF · .DV · .DIF · .ASF · .DVR-MS · .RM · .RMVB · .DIVX · .F4V · .INSV · .INSP · .LRV · .GIFV · .IVF · .Y4M · .M2V · .M1V · .MPV · .H264 · .H265 · .HEVC · .AVC · .OBU · .M2P · .M2T · .TRP · .WTV · .OGM · .NUT · .DPX · .CIN · .DAV · .YUV
Design32 formats
Illustrator
AI
Partial
Open Adobe Illustrator artwork (.ai) in the browser. Modern Illustrator files (version 9 and later) are PDF-compatible, so Analyser renders the artwork page by page with pdf.js - the vector art, text and embedded images - and reads the document metadata. Older EPS/PostScript-based .ai files are identified from their header.
Per-format guides: .AI
Photoshop
PSD PSB
Partial
Open Adobe Photoshop documents (PSD and PSB) in the browser: the flattened composite image Photoshop bakes in is shown, plus the full layer tree with each layer name, blend mode, opacity, visibility and a per-layer thumbnail. Reads the canvas dimensions, colour mode and bit depth. Files saved without Maximize Compatibility have no composite, so their layers are shown instead.
Raster art
KRA Procreate PDN
Partial
Open Krita (.kra), Procreate and Paint.NET (.pdn) paintings by showing the flattened preview baked into the file - the full merged image for Krita, the QuickLook thumbnail for Procreate, the embedded PNG preview for Paint.NET - alongside the canvas size, layer count and app version. Their per-layer artwork is in a private format, so the embedded preview is the faithful render.
Per-format guides: .KRA · .Procreate · .PDN
Vector graphics
SVG
Full
View or rasterise SVG (Scalable Vector Graphics) - the XML-based vector format used for icons, logos and illustrations - and inspect its markup, in the browser.
Per-format guides: .SVG
Adobe
INDD INDT IDML MOGRT SESX XD FLA SWF LRtemplate LRcat ACV ACO ASL ABR GRD PAT
ID
Identify Adobe project files and read their metadata: InDesign (INDD), XD, Animate (FLA), and Lightroom. After Effects projects (AEP, AET), Premiere Pro and Elements (PRPROJ, PREL), Photoshop (PSD, PSB) and Illustrator (AI) now open in full viewers - see After Effects, Premiere Pro, Photoshop and Illustrator.
Per-format guides: .INDD · .INDT · .IDML · .MOGRT · .SESX · .XD · .FLA · .SWF · .LRtemplate · .LRcat · .ACV · .ACO · .ASL · .ABR · .GRD · .PAT
Design
FIG afphoto afdesign afpub SPP SBSAR SBS CDR MDP
ID
Identify design-app files: Figma (FIG), Affinity Photo/Designer/Publisher, CorelDRAW (CDR), MediBang Paint (MDP) and Substance. A Figma file has its container read out - format, Kiwi version and chunk sizes - but not its contents: Figma encodes the design with Kiwi, a schema-driven binary format whose schema ships inside the file and changes with the version of Figma that wrote it, so there is no stable structure to walk. Sketch, by contrast, opens in a full viewer - see Sketch above. GIMP (XCF) does too, and Krita (KRA), Procreate and Paint.NET (PDN) show their embedded preview - see Raster art above.
Per-format guides: .FIG · .afphoto · .afdesign · .afpub · .SPP · .SBSAR · .SBS · .CDR · .MDP
Documents & e-books120 formats
PDF
PDF
Full
View pages, extract text and embedded images, run OCR, and read the metadata of PDF documents.
Per-format guides: .PDF
DjVu
DjVu DjV
Full
Open DjVu scanned documents (.djvu / .djv) - the format used by digital libraries and archives for scanned books and journals. Each page is decoded and rendered to an image in the browser with prev/next paging, and the document page count and page dimensions are read.
Kindle e-book
MOBI AZW AZW3
Full
Open Kindle and Mobipocket e-books (MOBI, AZW, AZW3 / KF8) in the browser: reads the title, author, publisher, language and cover, then renders the book section by section with prev/next paging. MOBI 6 and KF8 (including combo .mobi) are decoded on-device - nothing is uploaded.
Office docs
DOCX DOCM DOTX DOTM XLSX XLSB XLSM XLTX XLTM PPTX PPTM PPSX PPSM POTX POTM ODT OTT FODT ODS OTS FODS ODP OTP FODP ODG OTG FODG SXW SXC SXD DOC XLS PPT EPUB
Full
Open and read Microsoft Office documents - modern Word, Excel and PowerPoint (DOCX, XLSX, PPTX), their template, macro-enabled and slideshow variants (DOTX, XLTX, POTX, DOCM, XLSM, PPTM, PPSX), the binary Excel workbook (XLSB), and the legacy 97-2003 binaries (DOC, XLS, PPT) - plus the OpenDocument family in every shape: zipped and flat single-XML text, spreadsheets, presentations and graphics (ODT, ODS, ODP, ODG, FODT, FODS), templates (OTT, OTS, OTP, OTG), legacy StarOffice (SXW, SXC, SXD), and EPUB e-books, shown as page previews with selectable text, tables, sheets and slides. Excel workbooks (XLSX and its macro/template variants, plus the binary XLSB) and OpenDocument spreadsheets (ODS) additionally open in a full analysis workbench alongside the sheet preview - a virtualised grid with sort, filter, search and column tools, a group-by summary, and a chart builder - to explore the data itself, not just preview it.
Per-format guides: .DOCX · .DOCM · .DOTX · .DOTM · .XLSX · .XLSB · .XLSM · .XLTX · .XLTM · .PPTX · .PPTM · .PPSX · .PPSM · .POTX · .POTM · .ODT · .OTT · .FODT · .ODS · .OTS · .FODS · .ODP · .OTP · .FODP · .ODG · .OTG · .FODG · .SXW · .SXC · .SXD · .DOC · .XLS · .PPT · .EPUB
Text & markup
RTF ABW FB2 HWPX MHT MHTML DITA DITAMAP TEI JATS NXML RST ADOC AsciiDoc ORG Textile TeX LaTeX BIB RELS MD5
Full
Open lightweight document and markup formats as selectable page previews: Rich Text Format (RTF, control words stripped to readable prose), AbiWord (ABW), FictionBook e-books (FB2), Hangul HWPX, and MHTML web archives (the saved HTML rendered with scripts removed), plus markup and typesetting source - DITA, TEI, JATS journal XML, reStructuredText, AsciiDoc, Org-mode, Textile, TeX/LaTeX and BibTeX - shown with every page selectable and copyable. Also opens the small sidecar files unpacked from 3MF and OOXML bundles: OPC relationship XML (.rels) and MD5 checksum text (.md5).
Per-format guides: .RTF · .ABW · .FB2 · .HWPX · .MHT · .MHTML · .DITA · .DITAMAP · .TEI · .JATS · .NXML · .RST · .ADOC · .AsciiDoc · .ORG · .Textile · .TeX · .LaTeX · .BIB · .RELS · .MD5
Apple iWork
Pages Numbers Keynote
Partial
Open Apple iWork documents - Pages (word processing and page layout), Numbers (spreadsheets) and Keynote (presentations, .key) - by showing the QuickLook preview Apple embeds in the file: a PDF rendered page by page, or the preview image. Reads the document type and the iWork app version that wrote it. The document body itself is stored in Apple’s undocumented Snappy / Protocol-Buffer .iwa format, which is not re-rendered.
Fonts
TTF OTF WOFF WOFF2 TTC
Full
Preview fonts live in the browser and inspect them: the native FontFace API renders a real specimen (pangram, alphabet and sizes) of TrueType (TTF), OpenType (OTF), web fonts (WOFF, WOFF2) and collections (TTC), with sliders that drive each variable-font axis in real time. opentype.js reads the family, style, version, foundry, licence and units-per-em, counts the glyphs, and draws a grid of every glyph outline.
Text art
NFO
Full
Open scene-release NFO files decoded from their native CP437 (IBM PC OEM) code page, so the box-drawing and block-character ASCII art renders the way it was authored instead of as garbled text.
Per-format guides: .NFO
Documents / e-books (more)
CBZ CBR CBT CB7 XPS OXPS HWP FB3 IBOOKS SCRIV VSDX RMD QMD RTFD WARC MAFF DVI CHM WPD QXD PMD LIT KFX
ID
Open documents, e-books and publishing files beyond Office: comic books (CBZ/CBT with ComicInfo + first-page preview; CBR/CB7 identified), Microsoft XPS, FictionBook FB3, iBooks, Scrivener, Visio VSDX, R Markdown/Quarto, RTFD, WARC/MAFF web archives, TeX DVI, legacy Hangul HWP, and WordPerfect/QuarkXPress/PageMaker identification.
Per-format guides: .CBZ · .CBR · .CBT · .CB7 · .XPS · .OXPS · .HWP · .FB3 · .IBOOKS · .SCRIV · .VSDX · .RMD · .QMD · .RTFD · .WARC · .MAFF · .DVI · .CHM · .WPD · .QXD · .PMD · .LIT · .KFX
Documents / publishing (more)
SLA SCD WPS WPT WRI DOT SDW SDC SDD SNB LRF LRX TCR CBA FM Book AWT PM6 P65 PT6 ADF QXP ScrivX SXI ZABW
ID
Identify and read more document, e-book and publishing files: Scribus (.sla/.scd version, pages, fonts), MS Works and Windows Write, Word 97 templates (.dot), StarOffice 5.x binary docs, Shanda Bambook and Sony BBeB (.lrf/.lrx) e-books, FrameMaker, document templates and legacy PageMaker.
Per-format guides: .SLA · .SCD · .WPS · .WPT · .WRI · .DOT · .SDW · .SDC · .SDD · .SNB · .LRF · .LRX · .TCR · .CBA · .FM · .Book · .AWT · .PM6 · .P65 · .PT6 · .ADF · .QXP · .ScrivX · .SXI · .ZABW
Fonts (more)
GLIF EOT
ID
Identify and inspect UFO glyph sources (.glif) - the XML one-glyph format inside Unified Font Object projects used by RoboFont, Glyphs, FontForge and fontTools: read the glyph name, Unicode, advance width and contour/point/component counts, and render the glyph outline. Legacy Embedded OpenType (.eot) web fonts - Microsoft's Internet Explorer-only wrapper around TrueType - are identified.
Data & code232 formats
Visual Studio solution
SLN SLNX USERPREFS
Full
Open Visual Studio solution files - the classic text .sln and the newer XML .slnx (Visual Studio 2022 and the dotnet sln tooling) - in the browser: the solution format version and Visual Studio release, every project it groups (name, path, language and GUID) and the build configurations (Debug/Release platforms). MonoDevelop / Unity .userprefs files - the IDE's open documents and editor state - are shown as readable XML.
Per-format guides: .SLN · .SLNX · .USERPREFS
Notebooks & data
IPYNB HAR JSON5 JSONC Hjson
Full
Open and read structured developer data files: Jupyter notebooks (IPYNB) rendered cell by cell with their markdown, code and captured outputs (text and images); HAR network captures shown as a request table with status, type, size and timing; and the JSON supersets JSON5, JSONC and Hjson shown as selectable source with an expandable value tree.
Access database
MDB ACCDB
Full
Open Microsoft Access databases (.mdb Jet and .accdb ACE) fully in the browser: lists every user table with its columns and row count, and shows a sample of rows from each in a spreadsheet-style grid. Reads the creation date and format version. Nothing is uploaded.
Data
CSV TSV
Full
Open CSV and TSV tables in a full analysis workbench: a virtualised grid with sort, filter, per-column and global search, column show/hide/reorder and column splitting, a group-by summary, and a chart builder (line, bar, scatter, histogram, pie, area, box and heatmap) with PNG/JSON/CSV export.
Web / code
HTML CSS JS TS MTS TSX JSX JSON YAML XML MD HTM MJS YML TXT PS1 PSM1 PSD1 BAT CMD
Full
Preview and inspect HTML, CSS, JavaScript, TypeScript, JSON, YAML, XML and Markdown source files, plus Windows scripts. TypeScript (TS, MTS, and .d.ts declaration files) gets a structure readout beside the source: the modules it imports (packages against local files, and which are type-only), the names it exports, what it declares - interfaces, type aliases, enums, classes, functions - a code/comment/blank line breakdown, and how often it steps around the type system with any, as casts, non-null assertions and @ts- suppressions. PowerShell (PS1, PSM1, PSD1) is read for its comment-based help synopsis, #Requires directives, function and parameter counts, CmdletBinding and Authenticode signing; batch/command scripts (BAT, CMD) for the echo state, labels, variables set and the external tools they invoke.
Per-format guides: .HTML · .CSS · .JS · .TS · .MTS · .TSX · .JSX · .JSON · .YAML · .XML · .MD · .HTM · .MJS · .YML · .TXT · .PS1 · .PSM1 · .PSD1 · .BAT · .CMD
Git objects
PACK IDX
Full
Open git repository internals with no git binary: loose objects (the zlib-compressed blob, tree, commit and tag files under .git/objects), pack files (.pack) and pack indexes (.idx). Inflates and parses each object - showing its type, size and SHA-1, rendering commit and tag messages, listing tree entries, and handing blob contents to the analyser.
Databases
SQLite SQLite3 DB DB3 SQLite-WAL SQLite-SHM DB-WAL DB-SHM DB3-WAL DB3-SHM SQLite3-WAL SQLite3-SHM DCB
ID
Open SQLite databases (.sqlite/.db/.sqlite3) and read their full schema in-browser - every table with its columns and row counts, views, indexes, triggers, the CREATE-statement DDL, and a sample of the largest table. Reads the WAL-mode sidecars too: the Write-Ahead Log (-wal) - page size, salts, frame and committed-transaction counts, and the pages it changed - and the shared-memory index (-shm) - valid frame count, database size and checkpoint progress. (.sql dumps are listed under Developer / data.) Microsoft Access (MDB, ACCDB) now opens in a full table viewer - see Access database above. Concordance .dcb databases from the LexisNexis litigation review suite are identified from their bytes, and told apart from the other formats that reuse the same extension (compiled game data, speech-recognition dictionaries).
Per-format guides: .SQLite · .SQLite3 · .DB · .DB3 · .SQLite-WAL · .SQLite-SHM · .DB-WAL · .DB-SHM · .DB3-WAL · .DB3-SHM · .SQLite3-WAL · .SQLite3-SHM · .DCB
Config
TOML INI ENV CONF CFG PROPERTIES Config Info LST INF
ID
Identify configuration and small text files: TOML, INI, .env, CONF, CFG, Java properties, generic .config, info notes, .lst list/index files, and Windows Setup Information (.inf) driver/install scripts.
Per-format guides: .TOML · .INI · .ENV · .CONF · .CFG · .PROPERTIES · .Config · .Info · .LST · .INF
Electronics, runtime & backups (more)
TPS Browser PYD ICU BAK OLD PDSBak
ID
Identify runtime, electronics and backup files: Unreal third-party software notices (.tps), ASP.NET browser definitions (.browser), Python extension modules (.pyd DLLs), ICU internationalisation data (.icu), Proteus Design Suite backups (.pdsbak) and generic backup copies (.bak / .old).
Per-format guides: .TPS · .Browser · .PYD · .ICU · .BAK · .OLD · .PDSBak
Logs
LOG
ID
Identify log files and their origin - Apache, Nginx, syslog, Python, Java/Log4j, and Android logcat.
Per-format guides: .LOG
Developer / data
JWT JSONL NDJSON DIFF PATCH WASM CLASS NPY MAP SQL SLN CSPROJ VBPROJ FSPROJ VCXPROJ Gradle TF TFState EditorConfig PROTO GraphQL GQL SARIF PYC PLIST
ID
Identify and read metadata from developer and data files: JWT tokens (header + claims + expiry), WebAssembly, Java class files, NumPy arrays, source maps, SQL dumps (dialect, tables, columns, INSERT counts), Visual Studio/.NET projects, Terraform, Protobuf, GraphQL, SARIF, Python bytecode, and Apple property lists (XML + binary). Machine-learning models (ONNX, Safetensors, GGUF, PyTorch, Keras) now open in a full viewer - see AI models above; Jupyter notebooks (IPYNB) and HAR captures do too - see Notebooks & data.
Per-format guides: .JWT · .JSONL · .NDJSON · .DIFF · .PATCH · .WASM · .CLASS · .NPY · .MAP · .SQL · .SLN · .CSPROJ · .VBPROJ · .FSPROJ · .VCXPROJ · .Gradle · .TF · .TFState · .EditorConfig · .PROTO · .GraphQL · .GQL · .SARIF · .PYC · .PLIST
Source code & build files
C H CC CPP CXX HPP HH HXX INO MM HMM CS Java KT KTS Go RS PY PYW RB PHP Swift Scala Lua PL PM R Dart Groovy VB GLSL VERT FRAG COMP HLSL FS VS GS SH Bash ZSH Fish CMake MK MAK Make Ninja JAM Build IN INC AM AC M4 PRO PRI QRC RC DEF SPEC Skip Man DOX Doxygen GitIgnore GitAttributes GitModules DockerIgnore NPMIgnore ESLintIgnore PrettierIgnore CursorIgnore Clang-Format Clang-Tidy LESS SCSS Svelte PO POT Entitlements COPYING README LESSER FSH VSH Geom PYX Sample ESLintRC YarnClean ASPX PYI PXI PXD PYF PYS VBS F90 F95 F SCT RNG XSL CNF ZI 1 IDL ASP PC DSD Template Static
ID
Open and read programming-language source, build and configuration files as text: C, C++ and their headers, C#, Java, Kotlin, Go, Rust, Python, Ruby, PHP, Swift, Scala, Lua, Perl, R, Dart, Groovy and Visual Basic, GPU shaders (GLSL, HLSL), shell scripts (sh, Bash, Zsh, Fish), and the build and tooling files that fill a source repository - CMake, Makefiles, Ninja, Autotools (.in / .ac / .am / .m4), qmake projects, Doxygen configs and the dotfiles that configure Git, Docker, npm, ESLint, Prettier, Cursor and clang-format. Also opens Objective-C++ (.mm / .hmm), more GPU shaders (.fs / .vs / .gs), Boost.Jam and Meson build scripts, Unix manual pages, web stylesheets (Less, Sass/SCSS) and Svelte components, gettext translations (.po / .pot), Apple entitlements and licence/readme text, plus Cython (.pyx), OpenGL shaders (.fsh / .vsh / .geom), Git hook samples, ESLint and Yarn configs and ASP.NET (.aspx) pages. Each opens with a source preview, line count and metadata, entirely in your browser.
Per-format guides: .C · .H · .CC · .CPP · .CXX · .HPP · .HH · .HXX · .INO · .MM · .HMM · .CS · .Java · .KT · .KTS · .Go · .RS · .PY · .PYW · .RB · .PHP · .Swift · .Scala · .Lua · .PL · .PM · .R · .Dart · .Groovy · .VB · .GLSL · .VERT · .FRAG · .COMP · .HLSL · .FS · .VS · .GS · .SH · .Bash · .ZSH · .Fish · .CMake · .MK · .MAK · .Make · .Ninja · .JAM · .Build · .IN · .INC · .AM · .AC · .M4 · .PRO · .PRI · .QRC · .RC · .DEF · .SPEC · .Skip · .Man · .DOX · .Doxygen · .GitIgnore · .GitAttributes · .GitModules · .DockerIgnore · .NPMIgnore · .ESLintIgnore · .PrettierIgnore · .CursorIgnore · .Clang-Format · .Clang-Tidy · .LESS · .SCSS · .Svelte · .PO · .POT · .Entitlements · .COPYING · .README · .LESSER · .FSH · .VSH · .Geom · .PYX · .Sample · .ESLintRC · .YarnClean · .ASPX · .PYI · .PXI · .PXD · .PYF · .PYS · .VBS · .F90 · .F95 · .F · .SCT · .RNG · .XSL · .CNF · .ZI · .1 · .IDL · .ASP · .PC · .DSD · .Template · .Static
Developer / data (more)
LOCK PB MsgPack MPK BSON CBOR PKL Pickle NPZ JAR WAR EAR FBS Thrift Capnp HCL MAT RDB Arrow Feather Parquet ORC DESC DUMP
ID
Identify and read developer and data-serialisation files: dependency lockfiles (npm/Yarn/pnpm/Cargo/Poetry/Bundler/Composer - locked-package count), binary serialisations (MessagePack, CBOR, BSON, raw Protobuf messages and descriptor sets), Python pickles with a security note, NumPy .npz and Java jar/war/ear archives, IDL schemas (FlatBuffers/Thrift/Cap n Proto/HCL), MATLAB MAT-files, Redis RDB dumps and columnar big-data containers (Apache Arrow/Feather, Parquet, ORC). The JSON supersets JSON5/JSONC/Hjson now open in a full viewer - see Notebooks & data above.
Per-format guides: .LOCK · .PB · .MsgPack · .MPK · .BSON · .CBOR · .PKL · .Pickle · .NPZ · .JAR · .WAR · .EAR · .FBS · .Thrift · .Capnp · .HCL · .MAT · .RDB · .Arrow · .Feather · .Parquet · .ORC · .DESC · .DUMP
Native code, ML & misc (more)
ONNX TRT NODE DYLIB LDB REV CFF RSP CGP CHROMA STAMP
ID
Identify and read cross-platform binaries, ML models and build artefacts: ONNX neural-network models (the framework that exported it and the IR/model version), NVIDIA TensorRT engines (.trt - the plan file a network is compiled into for one specific GPU and TensorRT version, which is why it will not load anywhere else), native Node.js/Electron add-ons (.node) and macOS dynamic libraries (.dylib - Mach-O/PE/ELF container and architecture), LevelDB/RocksDB tables (.ldb), Git pack reverse indexes (.rev - RIDX header), Citation File Format metadata (CITATION.cff, content-gated against binary CFF fonts), compiler response files (.rsp), Razer Chroma animations (.chroma), build stamps/markers (.stamp) and pattern/grid data (.cgp).
Per-format guides: .ONNX · .TRT · .NODE · .DYLIB · .LDB · .REV · .CFF · .RSP · .CGP · .CHROMA · .STAMP
3D / CAD / engineering193 formats
3D model
STL OBJ PLY OFF STEP STP IGES IGS BREP 3MF AMF glTF GLB MTL
Full
View STL, OBJ, PLY, OFF, STEP, IGES, BREP, 3MF, AMF and glTF/GLB models in an interactive WebGL viewer with orbit, orthographic or perspective projection, a wireframe topology overlay, an orientation cube, triangle count, bounding box, surface area and volume. glTF 2.0 and binary GLB scenes are parsed natively - the node graph is flattened, mesh geometry shown, and the authoring tool, version and mesh/material/animation counts read. STEP/IGES/BREP are tessellated with OpenCASCADE and STEP shows its originating CAD system, version and AP203/214/242 protocol; 3MF and AMF let you inspect each model and assembly on the build plate individually, and any pictures a 3MF package carries - its own thumbnail, the build-plate renders slicers such as Bambu Studio and OrcaSlicer write, and texture maps - are extracted and shown with it. Wavefront material libraries (MTL) are broken out into each material with its colours, shininess, opacity and the texture files it references.
Per-format guides: .STL · .OBJ · .PLY · .OFF · .STEP · .STP · .IGES · .IGS · .BREP · .3MF · .AMF · .glTF · .GLB · .MTL
Fusion 360
F3D F3Z
Partial
Open an Autodesk Fusion 360 design (.f3d) or archive (.f3z) and read what it holds: the document type (part, assembly, drawing or sheet metal), the Fusion document version, the number of solid bodies and embedded appearance assets, and the thumbnail Fusion rendered into the file - shown as the model. The editable geometry is stored as Autodesk ShapeManager BREP, a proprietary format that cannot be rebuilt in the browser, so export to STL, OBJ, STEP or 3MF for the full 3D viewer.
SolidWorks
SLDPRT SLDASM SLDDRW
Partial
Open a SolidWorks part (.sldprt), assembly (.sldasm) or drawing (.slddrw). Older (pre-2015) files are OLE2 documents: Analyser reads the saved preview thumbnail and the document metadata (title, author, who last saved it and when). Files saved by SolidWorks 2015 or later are encrypted by Dassault Systemes, so they are identified but their contents cannot be read outside SolidWorks - in either case the editable Parasolid geometry stays proprietary, so export to STEP, STL or 3MF for the full 3D viewer.
G-code
GCODE GCO G NC NGC TAP CNC DIN
Full
Reconstruct and visualise the printed (or machined) object straight from G-code: every extruded move is drawn as a line in an interactive WebGL viewer, height-coloured and Z-up, with a build-height scrubber to peel the print back layer by layer. Works universally across slicers (PrusaSlicer, SuperSlicer, OrcaSlicer, Cura, ideaMaker, Bambu Studio, Simplify3D) and CNC / laser CAM, handling absolute and relative moves, inch and millimetre units, and G2/G3 arcs; travel moves are separated out. Reads the slicer or CAM tool, object size, layer count and height, filament or cut-path length, feedrate range, and nozzle/bed temperatures. NC programs written to DIN 66025 (the German standard behind ISO 6983, used by Heidenhain and Siemens Sinumerik controls and commonly saved as .din) are read by the same viewer.
Per-format guides: .GCODE · .GCO · .G · .NC · .NGC · .TAP · .CNC · .DIN
Diagrams
DRAWIO DXF DWG DWT
Full
Render 2D vector diagrams and CAD drawings to a preview: draw.io / diagrams.net (DRAWIO) files - decoding the mxGraph model, inline or compressed - AutoCAD DXF drawings (parsing the ASCII ENTITIES section), and binary AutoCAD DWG/DWT drawings, parsed by LibreDWG (WebAssembly) into their entities and rendered to an SVG, with an entity and layer breakdown. The thumbnail AutoCAD stored inside the DWG when it was last saved is pulled out alongside it, so even a drawing no CAD engine can open still shows a picture of itself.
Altium (EDA)
SchDoc SchLib PcbDoc PcbLib PrjPcb EPW
Full
Open Altium Designer schematics, circuit boards and projects in the browser. Analyser reads the OLE compound-file streams of schematic documents (.SchDoc) and symbol libraries (.SchLib), and PCB documents (.PcbDoc) and footprint libraries (.PcbLib), and rebuilds the geometry as an interactive vector view: schematic symbols, wires and pins, or the board outline, copper, pads, tracks and arcs - with pan, zoom and per-layer visibility toggles. It surfaces the component part numbers, datasheet and supplier links, the pad table and the layers used, reads the project manifest (.PrjPcb) with its member documents, and decodes the SamacSys ECAD Model wrapper (.epw). Nothing is uploaded.
Per-format guides: .SchDoc · .SchLib · .PcbDoc · .PcbLib · .PrjPcb · .EPW
KiCad (EDA)
kicad_sch kicad_pcb kicad_sym kicad_mod kicad_pro kicad_prl
Full
Open KiCad schematics, circuit boards, footprints and projects in the browser. Analyser parses the S-expression documents - schematics (.kicad_sch), boards (.kicad_pcb), symbol libraries (.kicad_sym) and footprint modules (.kicad_mod), including the "-bak" backups - and rebuilds the geometry as an interactive vector view: schematic symbols, wires, junctions and labels, or the board outline, copper tracks, pads, vias, zones and silkscreen, with pan, zoom and per-layer visibility toggles. It reads the project settings (.kicad_pro / .kicad_prl JSON) with its net classes, the library tables, the footprint cache and the ngspice simulation workbook (.wbk), and plots the SPICE simulation waveforms (.raw) from KiCad/ngspice or LTspice - decoding the analysis type, variables and samples to chart the traces or tabulate an operating point. Dropping a whole project folder opens every document together as one design with a combined bill of materials that cross-probes each part to its symbol on the schematic and its footprint on the board. Nothing is uploaded.
Per-format guides: .kicad_sch · .kicad_pcb · .kicad_sym · .kicad_mod · .kicad_pro · .kicad_prl
IPC netlist (EDA)
IPC
Full
Open IPC-D-356A bare-board fabrication and electrical-test netlists (.ipc) exported by KiCad, Altium and other PCB tools. Analyser parses the fixed-column feature records - the net each test point belongs to, the component reference and pin, the pad or via geometry and its X/Y position - and rebuilds the full net-to-pin connectivity, summarises the nets, components and pad/via mix, and draws a fabrication map of every test point coloured by net.
Per-format guides: .IPC
CAD
SLDREG SVAP SVPJ IPT IAM IDW 3DM SKP 3DS MAX C4D HIP ZPR ZTL MA MB CATPART CATPRODUCT PRT ASM BRD SCH KiCad_pcb GH GHX
ID
Identify CAD files and read header metadata: AutoCAD DWG/DWT and DXF now open as a 2D drawing preview (see Diagrams), SolidWorks .sldreg Settings Wizard backups (release year, settings groups and the saved registry keys) and SOLIDWORKS Visualize .svap appearances and .svpj projects, opened as the ZIP packages they are, Inventor (IPT, IAM), Rhino (3DM) and Grasshopper (GH, GHX), SketchUp (SKP), 3ds Max, Cinema 4D, Houdini, ZBrush, Maya, CATIA, Eagle, and KiCad. SolidWorks parts/assemblies/drawings (SLDPRT, SLDASM, SLDDRW) and Autodesk Fusion 360 (F3D, F3Z) have their own viewers - see SolidWorks and Fusion 360 above.
Per-format guides: .SLDREG · .SVAP · .SVPJ · .IPT · .IAM · .IDW · .3DM · .SKP · .3DS · .MAX · .C4D · .HIP · .ZPR · .ZTL · .MA · .MB · .CATPART · .CATPRODUCT · .PRT · .ASM · .BRD · .SCH · .KiCad_pcb · .GH · .GHX
CAD exchange
SAT X_T X_B
ID
Identify neutral CAD exchange formats: Parasolid (X_T, X_B) and ACIS (SAT). STEP and IGES get a full 3D viewer - see the 3D model section.
3D / printing
FBX USDZ USD USDA BLEND IDEA ZCODE
ID
Identify 3D and 3D-printing files: FBX, USD/USDZ, Blender (BLEND), Raise3D ideaMaker projects and print profiles (IDEA) and Zortrax Z-SUITE compiled prints (ZCODE). A Blender scene saved with preview images gives up the thumbnail it stored, so you can see what the scene looked like without opening Blender. OBJ, PLY, OFF, 3MF, AMF and glTF/GLB get a full 3D viewer - see the 3D model section.
Per-format guides: .FBX · .USDZ · .USD · .USDA · .BLEND · .IDEA · .ZCODE
Engineering
CDP
ID
Identify CDP files - either CDP4 (COMET) concurrent-design models from the ESA systems-engineering toolset, or Criterium DecisionPlus decision-analysis models.
Per-format guides: .CDP
Science / medical / engineering
DCM DICOM NII FIT TCX FITS FTS FASTA FA FNA FAA FASTQ FQ GBR GBL GTL DRL XLN CIR SP SPI SPICE EDF BDF JDX DX SAV DTA SAS7BDAT VTK VTU VTP VTI SEGY SGY BAM SAM BCF HEA
ID
Open scientific, medical and engineering files: DICOM scans, NIfTI brain volumes, Garmin FIT/TCX activities, FITS astronomy frames, FASTA/FASTQ sequences, Gerber/Excellon PCB data, SPICE netlists, EDF/BDF biosignals, JCAMP-DX spectra, SPSS/Stata/SAS datasets and VTK/ParaView meshes - metadata extracted entirely in-browser.
Per-format guides: .DCM · .DICOM · .NII · .FIT · .TCX · .FITS · .FTS · .FASTA · .FA · .FNA · .FAA · .FASTQ · .FQ · .GBR · .GBL · .GTL · .DRL · .XLN · .CIR · .SP · .SPI · .SPICE · .EDF · .BDF · .JDX · .DX · .SAV · .DTA · .SAS7BDAT · .VTK · .VTU · .VTP · .VTI · .SEGY · .SGY · .BAM · .SAM · .BCF · .HEA
3D / CAD / point clouds (more)
VOX DAE ZAE USDC X3D WRL VRML LWO LWS MD2 MD3 MDL VRM JT LAS LAZ PCD PTS E57 IFCZIP SPLAT SPZ PRC VDB X3DV HIPNC
ID
Header and metadata extraction for 3D meshes, voxels, BIM, point clouds and Gaussian splats: MagicaVoxel VOX, COLLADA DAE/ZAE, USD crate, X3D/VRML, LightWave LWO/LWS, Quake MD2/MD3/MDL, VRM avatars, Siemens JT, LAS/LAZ/PCD/PTS/E57 LiDAR clouds, and .splat/.spz - vertex/face/point counts, bounding boxes, units and authoring tool. IFC building models now open in a full viewer - see BIM / IFC above. glTF/GLB now open in a full 3D viewer - see the 3D model section.
Per-format guides: .VOX · .DAE · .ZAE · .USDC · .X3D · .WRL · .VRML · .LWO · .LWS · .MD2 · .MD3 · .MDL · .VRM · .JT · .LAS · .LAZ · .PCD · .PTS · .E57 · .IFCZIP · .SPLAT · .SPZ · .PRC · .VDB · .X3DV · .HIPNC
3D / CAD (more)
DRC KSplat U3D 3DXML X QB Wings PLN PLA RVT RFA RTE RFT PAR PSM PWD NWD NWF NWC Model EXP DLV Session CL3 CLR TZF VSD
ID
Identify more 3D, CAD and scene files: Google Draco compressed meshes, Gaussian splats (KSplat), Universal 3D, Dassault 3DXML, DirectX .x models, Qubicle voxels, Wings3D, Graphisoft ArchiCAD BIM projects (PLN/PLA, from their "ROF FDB" header), Autodesk Revit (RVT/RFA and templates, build version from BasicFileInfo), Siemens Solid Edge, Navisworks, legacy CATIA V4, terrestrial-scanner point clouds (FARO/Trimble) and legacy binary Visio (.vsd).
Per-format guides: .DRC · .KSplat · .U3D · .3DXML · .X · .QB · .Wings · .PLN · .PLA · .RVT · .RFA · .RTE · .RFT · .PAR · .PSM · .PWD · .NWD · .NWF · .NWC · .Model · .EXP · .DLV · .Session · .CL3 · .CLR · .TZF · .VSD
Science / engineering (more)
RDS RData RDA AB1 POSCAR XSF CDX CDXML ABF TDMS VHDR VMRK CNT EEG SET VTS VTR NET MSH INP CDB WFM
ID
Identify and read more scientific, medical and engineering files: R serialized data (RDS/RData), ABIF sequencing traces, VASP/Gaussian/XCrySDen DFT structures, ChemDraw (CDX/CDXML), Axon ABF and NI TDMS instrument data, BrainVision/Neuroscan/EEGLAB EEG, Gmsh/Abaqus/Nastran/ANSYS FEA decks, SPICE netlists, VTK structured/rectilinear grids and oscilloscope waveforms.
Per-format guides: .RDS · .RData · .RDA · .AB1 · .POSCAR · .XSF · .CDX · .CDXML · .ABF · .TDMS · .VHDR · .VMRK · .CNT · .EEG · .SET · .VTS · .VTR · .NET · .MSH · .INP · .CDB · .WFM
Archives52 formats
Archives
ZIP RAR 7Z TAR GZ TGZ BZ2 XZ ZST LZ4 LZMA Z
Full
Browse the file tree and compression details of archives without extracting them: ZIP in pure JavaScript, and RAR, 7z, TAR and compressed tarballs (.tar.gz / .tgz, .tar.xz, .tar.zst, .tar.bz2) through a bundled libarchive engine - click any file inside to analyse it. A single compressed stream (.gz, .xz, .zst, .lz4, .lzma, .Z) is decompressed so the file within can be opened; bare .bz2 streams are identified only.
Per-format guides: .ZIP · .RAR · .7Z · .TAR · .GZ · .TGZ · .BZ2 · .XZ · .ZST · .LZ4 · .LZMA · .Z
Archives (packages)
CPIO A LIB WHL NUPKG CRX XPI VSIX ASAR APPX MSIX APKG CONDA DEB RPM GEM CAB WSP ACE ARJ LZH LHA ZOO ARC
ID
Read software packages and Unix archive streams: Python wheels, NuGet, Chrome/Firefox/VS Code extensions, Electron ASAR, Windows APPX/MSIX, Debian (DEB), RPM, RubyGems, conda, Anki, Microsoft CAB, cpio, Unix ar and Microsoft COFF libraries (.lib - telling a static library apart from a DLL import library, with the target architecture and the DLLs it binds to) - showing name, version, dependencies and the file tree.
Per-format guides: .CPIO · .A · .LIB · .WHL · .NUPKG · .CRX · .XPI · .VSIX · .ASAR · .APPX · .MSIX · .APKG · .CONDA · .DEB · .RPM · .GEM · .CAB · .WSP · .ACE · .ARJ · .LZH · .LHA · .ZOO · .ARC
Archives (more)
XAR PKG MPKG MSU SNAP Flatpak SIT SITX LZO BR JNLP TLZ TBZ TZ TXZ TZST
ID
Open more archives, packages and installers: macOS XAR/.pkg/.mpkg installers (member list), Windows .msu updates (CAB), Snap SquashFS packages, Flatpak bundles, StuffIt (.sit/.sitx), lzop (.lzo) and Brotli (.br) streams, Java Web Start (.jnlp), and the .tlz/.tbz/.tz compressed-tarball shorthands.
Per-format guides: .XAR · .PKG · .MPKG · .MSU · .SNAP · .Flatpak · .SIT · .SITX · .LZO · .BR · .JNLP · .TLZ · .TBZ · .TZ · .TXZ · .TZST
Maps & GIS51 formats
Map data
GPX KML GeoJSON
Full
Parse GPX tracks, KML placemarks, and GeoJSON features - counts, distance, elevation, time span, and bounds - plotted on an OpenStreetMap map.
GIS / mapping
KMZ
ID
Identify geographic files: zipped Google Earth (KMZ). GPX, KML, and GeoJSON get full parsing + a map (see above); Esri Shapefiles (SHP and siblings) are listed under Geospatial / GIS above.
Per-format guides: .KMZ
Geospatial / GIS
TopoJSON OSM SHP SHX DBF PRJ CPG PGW TFW JGW WLD GML NMEA NMEA0183 IGC TAB MIF VRT PMTiles DT0 DT1 DT2 DTED ASC HGT GRIB GRB GRIB2 CDF NC4 PBF GPKG MBTiles SID ECW GDB
ID
Inspect geospatial and GIS files without a map: TopoJSON, OpenStreetMap XML, Esri Shapefile siblings (SHP/SHX/DBF/PRJ/CPG), world files, GML, NMEA GPS logs, IGC flight logs, MapInfo TAB/MIF, GDAL VRT, PMTiles, DTED terrain, Esri ASCII grids and SRTM .hgt - surfacing CRS/EPSG, feature/record counts, bounding boxes and elevation ranges. GRIB/NetCDF/GeoPackage/MBTiles/MrSID/ECW identified.
Per-format guides: .TopoJSON · .OSM · .SHP · .SHX · .DBF · .PRJ · .CPG · .PGW · .TFW · .JGW · .WLD · .GML · .NMEA · .NMEA0183 · .IGC · .TAB · .MIF · .VRT · .PMTiles · .DT0 · .DT1 · .DT2 · .DTED · .ASC · .HGT · .GRIB · .GRB · .GRIB2 · .CDF · .NC4 · .PBF · .GPKG · .MBTiles · .SID · .ECW · .GDB
GIS / mapping (more)
O5M O5C LYR LYRX QGS QGZ SBN SBX CPT BIL BIP BSQ
ID
Identify and read more GIS and mapping files: OpenStreetMap o5m/o5c binaries, Esri layer files (.lyrx ArcGIS Pro CIM JSON, .lyr ArcMap), QGIS projects (.qgs/.qgz - version, CRS, layer list), shapefile spatial indexes (.sbn/.sbx), GMT/GDAL colour palettes (.cpt) and ENVI band-interleaved rasters (.bil/.bip/.bsq).
Per-format guides: .O5M · .O5C · .LYR · .LYRX · .QGS · .QGZ · .SBN · .SBX · .CPT · .BIL · .BIP · .BSQ
Games167 formats
Unity
UNITY PREFAB ASSET CONTROLLER ANIM MAT META physicsMaterial2D physicMaterial CUBEMAP SPRITEATLAS MIXER overrideController
Full
Open Unity game-engine assets in the browser. Unity serialises scenes (.unity), prefabs, Animator Controllers (.controller), animation clips (.anim), materials (.mat), physics materials (.physicsMaterial2D) and other assets (.asset) as a YAML object stream, with a .meta importer record (carrying the asset GUID) beside every file. Analyser splits the object documents and reads each - a scene's GameObjects and component-type breakdown (Transform, SpriteRenderer, colliders, scripts), an animation's sample rate and curves, a controller's layers and states, a material's friction and bounciness, and a .meta's GUID and importer.
Per-format guides: .UNITY · .PREFAB · .ASSET · .CONTROLLER · .ANIM · .MAT · .META · .physicsMaterial2D · .physicMaterial · .CUBEMAP · .SPRITEATLAS · .MIXER · .overrideController
Game engines
UNITYPACKAGE UASSET UMAP GODOT TSCN TRES UProject UPlugin UBulk UFont LocMeta LocRes UShaderBytecode resS MCMeta BK2 Lang LNG
ID
Identify game-engine assets: Unity (UNITYPACKAGE, .resS resource streams), Unreal Engine (UASSET, UMAP, .uproject / .uplugin descriptors, .ubulk bulk data, .ufont fonts, .locmeta / .locres localisation, .ushaderbytecode shaders), Godot (TSCN, TRES), Minecraft asset metadata (.mcmeta) and language files (.lang / .lng), and Bink Video 2 (.bk2) cutscenes.
Per-format guides: .UNITYPACKAGE · .UASSET · .UMAP · .GODOT · .TSCN · .TRES · .UProject · .UPlugin · .UBulk · .UFont · .LocMeta · .LocRes · .UShaderBytecode · .resS · .MCMeta · .BK2 · .Lang · .LNG
Game saves
BEPIS
ID
Read ULTRAKILL save files (BEPIS) - decoding the .NET BinaryFormatter stream into your actual progress: money and unlocked weapon variants, furthest level and difficulty reached, per-level ranks, secrets and best kills/style/time, and your Cyber Grind high score (wave, kills, style and time).
Per-format guides: .BEPIS
Valve / Steam
VDF ACF
ID
Parse Valve KeyValues files (VDF) and Steam app manifests (ACF) - appmanifest, libraryfolders, loginusers, and config - surfacing the App ID, name, install dir, size on disk, and the full key tree.
Game ROMs / assets
NES GB GBC GBA SFC SMC NDS DSI Z64 N64 V64 GEN SMD IPS BPS UPS PPF WAD NBT MCWORLD ASE PCK PAK PK3 BSP VPK VTF VMT KTX KTX2 TMX TMJ LOVE PACKAGE MPQ CIA NSP XCI
ID
Inspect game ROMs, patches and engine assets: iNES/NES2.0, Game Boy/Color/Advance, SNES, Nintendo DS/DSi, Nintendo 64, and Sega Genesis ROM headers (title, mapper, region, checksum); IPS/BPS/UPS/PPF patches; Doom WAD lumps; Minecraft NBT/schematics and Bedrock bundles; Godot .pck; Quake/id Tech PAK/PK3; Source BSP/VPK/VMT; Valve VTF and Khronos KTX/KTX2 textures, whose block-compressed (DXT/BCn) and uncompressed surfaces are decoded to a real preview; Tiled maps; LÖVE games; PICO-8 carts - plus MPQ, 3DS/Switch and Ren’Py/RPG Maker identification.
Per-format guides: .NES · .GB · .GBC · .GBA · .SFC · .SMC · .NDS · .DSI · .Z64 · .N64 · .V64 · .GEN · .SMD · .IPS · .BPS · .UPS · .PPF · .WAD · .NBT · .MCWORLD · .ASE · .PCK · .PAK · .PK3 · .BSP · .VPK · .VTF · .VMT · .KTX · .KTX2 · .TMX · .TMJ · .LOVE · .PACKAGE · .MPQ · .CIA · .NSP · .XCI
Game assets (more)
Assets Bundle Resource UTOC UCAS UEXP UMD CSO CHD FSB Bank BNK WEM Spine Skel Atlas YYP YY GMX MCA MCR MCTemplate SCN CPMModel 3DSX A78 A26 LNX J64 PCE GG SMS WS WSC W3X W3M RPYC RVData2 RXData Pyxel LDtk TIC XDelta Basis SRM State DSV DSM VBM FM2 SC2Replay RPA RGSSAD RGSS3A Litematic Schem Schematic McAddon McPack PK4 OBB
ID
Identify and read more game and emulator files: Unity asset bundles, Unreal cooked assets, CISO/CHD disc images, FMOD/Wwise sound banks, Spine skeletons and atlases, GameMaker/LDtk/TIC-80 projects, Minecraft Anvil regions, Warcraft III maps, Ren Py and RPG Maker data, extra console ROMs (Atari, PC Engine, Master System/Game Gear, WonderSwan, 3DS homebrew), xdelta/Basis patches and emulator saves and movies. Scene and scenario files share the .scn extension across unrelated engines, so it is resolved on its bytes: a Godot binary scene (RSRC header) is named as one, and the strategy-game scenarios (OpenTTD, Age of Empires, SimCity 2000) and plain-text scenes (Orbiter, Behringer X32) are told apart from it. Custom Player Models .cpmmodel avatars - the standalone model the Minecraft mod exports, and what the Blockbench plugin reads and writes - are identified too.
Per-format guides: .Assets · .Bundle · .Resource · .UTOC · .UCAS · .UEXP · .UMD · .CSO · .CHD · .FSB · .Bank · .BNK · .WEM · .Spine · .Skel · .Atlas · .YYP · .YY · .GMX · .MCA · .MCR · .MCTemplate · .SCN · .CPMModel · .3DSX · .A78 · .A26 · .LNX · .J64 · .PCE · .GG · .SMS · .WS · .WSC · .W3X · .W3M · .RPYC · .RVData2 · .RXData · .Pyxel · .LDtk · .TIC · .XDelta · .Basis · .SRM · .State · .DSV · .DSM · .VBM · .FM2 · .SC2Replay · .RPA · .RGSSAD · .RGSS3A · .Litematic · .Schem · .Schematic · .McAddon · .McPack · .PK4 · .OBB
REDengine (Cyberpunk 2077)
ARCHIVE REDSCRIPTS SCRIPT TWEAK ADDCONT_KEYSTONE RNE
ID
Identify CD Projekt Red REDengine 4 files from Cyberpunk 2077 and The Witcher 3: packed asset archives (.archive - RDAR header, version, index position/size and file count), compiled redscript caches (.redscripts), redscript/TweakXL source (.script, .tweak), add-on content keystones, and Cyberpunk's renamed Steam DLL (.rne). Also routes by magic the engine's Oodle-compressed blobs (oodle_dictionary.bin), per-platform shader caches (.cache) and the Inno Setup uninstall log (unins000.dat).
Per-format guides: .ARCHIVE · .REDSCRIPTS · .SCRIPT · .TWEAK · .ADDCONT_KEYSTONE · .RNE
Marathon (Aleph One)
SCEN SCEA APPL PHYS PHYA SHPS SHPA SNDZ SNDA FILA IMGA MML
ID
Identify Marathon (Bungie's 1994 FPS trilogy) and Aleph One data files - the open-source engine that runs Classic Marathon, Marathon 2 and Infinity on Steam: scenario maps (.scen / .sceA), physics models (.phys / .phyA), shapes/sprite collections (.shps / .ShPa), sound collections (.sndz / .sndA), recorded-game films (.filA), interface images (.imgA) and MML config XML (.mml). Reads the big-endian wad header version and the embedded internal name from each.
Per-format guides: .SCEN · .SCEA · .APPL · .PHYS · .PHYA · .SHPS · .SHPA · .SNDZ · .SNDA · .FILA · .IMGA · .MML
Unity / IL2CPP
USYM PD_ SHADERVARIANTS SHADER HFTHUMB HASH
ID
Identify and read Unity engine files, including IL2CPP-compiled games: the IL2CPP symbol map (.usym - version, symbol count) and global-metadata.dat (magic-gated - metadata version, mapped to a Unity release), Addressables binary catalogs (catalog.bin, content-gated) and their catalog.hash, ShaderLab shaders (.shader) and shader variant collections (.shadervariants), asset bundle manifests (core_assets.manifest), renamed .NET metadata blobs (.pd_ - BSJB runtime version) and House Flipper photo thumbnails (.hfthumb - JPEG wrapped, re-openable as an image). Plus generic hash/checksum text (.hash).
Per-format guides: .USYM · .PD_ · .SHADERVARIANTS · .SHADER · .HFTHUMB · .HASH
Source 2 (Valve)
GI KV3 VCFG VQLAYOUT VSC QSS SIGNATURES VSND_TEMPLATE VNM_TEMPLATE MKS_TEMPLATE RES
ID
Identify and read Valve Source 2 text assets from Deadlock (Citadel), Counter-Strike 2, Dota 2 and Half-Life: Alyx: the gameinfo.gi manifest (game, title, search-path mounts), KeyValues3 files (.kv3 / .vcfg - surfacing the KV3 encoding and format header), the editor templates (.vsnd_template sound events, .vnm_template node graphs, .mks_template sheets), tools UI (.vqlayout, .vsc colours, .qss Qt stylesheets), function-signature databases (.signatures) and text resource/UI layouts (.res, content-gated against binary Windows .res) - each with parsed metadata plus a source preview.
Per-format guides: .GI · .KV3 · .VCFG · .VQLAYOUT · .VSC · .QSS · .SIGNATURES · .VSND_TEMPLATE · .VNM_TEMPLATE · .MKS_TEMPLATE · .RES
Email & security88 formats
Email
EML EMLX MBOX
Full
Open email messages and mailboxes in the browser: single messages (EML, Apple Mail EMLX) and whole mailboxes (MBOX). Reads From/To/Subject/Date, counts the Received relay hops, surfaces SPF/DKIM/DMARC authentication results, lists attachments, and renders the message body (HTML sanitised with scripts and remote content removed, or plain text).
Certificates
CRT CER PEM DER
ID
Identify and decode X.509 security certificates (CRT, CER, PEM, DER) - subject, issuer, validity dates, and key details.
Calendar / contacts
ICS ICAL IFB VCF VCARD VCS LDIF CONTACT MSG PST OST NSF EDB DBX
ID
Open personal-information files: iCalendar .ics/.ical and .vcs (events, times, recurrence, organiser/attendees), vCard .vcf contacts (fields, plus every photo and company logo stored inside the file, each extracted at full size and saveable), LDIF directory exports and Windows .contact - with Outlook .msg/.pst, IBM Notes .nsf, Exchange .edb and Outlook Express .dbx identified. Email messages (.eml/.emlx/.mbox) now open in a full viewer - see Email above.
Per-format guides: .ICS · .ICAL · .IFB · .VCF · .VCARD · .VCS · .LDIF · .CONTACT · .MSG · .PST · .OST · .NSF · .EDB · .DBX
Security / keys / certs
KEY PUB P8 CSR CRL P7B P7C PPK OVPN WG JKS KEYSTORE JCEKS MOBILECONFIG MOBILEPROVISION REG PCAP PCAPNG P12 PFX KDBX EVTX PENC ENC
ID
Inspect security and crypto files: PEM private/public keys (RSA/EC/Ed25519, PKCS#1 vs PKCS#8, encryption), OpenSSH .pub with SHA-256 fingerprint, PuTTY .ppk, PKCS#10 CSR, X.509 CRL, PKCS#7 bundles, OpenVPN/WireGuard configs, Java KeyStores, Apple .mobileconfig/.mobileprovision, Windows .reg (with autorun flagging), and pcap/pcapng captures - warning when a private key or secret is present.
Per-format guides: .KEY · .PUB · .P8 · .CSR · .CRL · .P7B · .P7C · .PPK · .OVPN · .WG · .JKS · .KEYSTORE · .JCEKS · .MOBILECONFIG · .MOBILEPROVISION · .REG · .PCAP · .PCAPNG · .P12 · .PFX · .KDBX · .EVTX · .PENC · .ENC
Email / contacts (more)
OLM OFT P7M P7S MSF MAB MBX TOC VMG VNT XCAL JCAL XCARD JCARD LDI PAB WAB ABBU
ID
Identify and read more email, calendar and contact files: Outlook for Mac archives (.olm) and templates (.oft), S/MIME .p7m/.p7s, Mozilla Mork stores (.msf/.mab), Eudora/Outlook Express mailboxes (.mbx/.toc), phone backups (.vmg SMS, .vnt notes), XML/JSON iCalendar and vCard (.xcal/.jcal/.xcard/.jcard), LDIF (.ldi) and legacy address books (.pab/.wab/.abbu).
Per-format guides: .OLM · .OFT · .P7M · .P7S · .MSF · .MAB · .MBX · .TOC · .VMG · .VNT · .XCAL · .JCAL · .XCARD · .JCARD · .LDI · .PAB · .WAB · .ABBU
Security / forensics (more)
PGP GPG SIG EVT YAR YARA RULES STIX IOC SAZ 1PUX OPVault Keychain AFF AFF4 KDB PVK authorized_keys known_hosts hive ETL DMP CAP NTAR E01
ID
Identify and read more security and forensics files: OpenPGP messages/keys/signatures (.pgp/.gpg/.sig - armor type, packet walk, key algorithm and user ID, secret-key warning), YARA rules, Snort/Suricata IDS rules, STIX/OpenIOC threat intel, Fiddler captures (.saz), 1Password exports (.1pux), Apple Keychain, KeePass 1.x (.kdb), Microsoft keys (.pvk) and AFF/AFF4 forensic images.
Per-format guides: .PGP · .GPG · .SIG · .EVT · .YAR · .YARA · .RULES · .STIX · .IOC · .SAZ · .1PUX · .OPVault · .Keychain · .AFF · .AFF4 · .KDB · .PVK · .authorized_keys · .known_hosts · .hive · .ETL · .DMP · .CAP · .NTAR · .E01
System & disk217 formats
Tracker music
MOD XM IT S3M MPTM MTM STM 669 667 FAR OKT MED UMX MO3 AMS C67 DBM DIGI DMF DTM ETX FC FC13 FC14 FMT FST FTM GDM GMC GTK GT2 ICE IMF IMS J2B M15 MMCMP MMS MT2 MUS NST OXM PLM PT36 PTM PUMA RTM SFX SFX2 SMOD ST26 STK STX SYMMOD TCB ULT UNIC WOW XMF XPK
Full
Play and analyse tracker modules - MOD, XM, IT, S3M and around sixty relatives from the demoscene and the Amiga and DOS eras. A module is not recorded audio: it is a bank of instrument samples plus a pattern score saying which sample to trigger, on which channel, at which row, so playing one means running a tracker engine. Analyser renders the song on your device with libopenmpt - the engine behind OpenMPT - and then treats the result like any other audio, so you get the full Sound section: waveform, spectrogram, transport, loudness, key and BPM. Above it sits the module itself - the tracker that wrote it, the channel, pattern and order counts, the song message, and the sample and instrument name lists, which is traditionally where authors left their greetings. The rendered song can be saved as a WAV.
Per-format guides: .MOD · .XM · .IT · .S3M · .MPTM · .MTM · .STM · .669 · .667 · .FAR · .OKT · .MED · .UMX · .MO3 · .AMS · .C67 · .DBM · .DIGI · .DMF · .DTM · .ETX · .FC · .FC13 · .FC14 · .FMT · .FST · .FTM · .GDM · .GMC · .GTK · .GT2 · .ICE · .IMF · .IMS · .J2B · .M15 · .MMCMP · .MMS · .MT2 · .MUS · .NST · .OXM · .PLM · .PT36 · .PTM · .PUMA · .RTM · .SFX · .SFX2 · .SMOD · .ST26 · .STK · .STX · .SYMMOD · .TCB · .ULT · .UNIC · .WOW · .XMF · .XPK
Terraria world
WLD
Full
Open a Terraria world save (.wld) and see the map drawn from its own tile data - one pixel per tile, with terrain and ore veins in the foreground, walls shaded behind them, and water, lava and honey in their own colours. Reads the world name, the seed it was generated from, its size and difficulty (Classic, Expert, Master or Journey) and the game version that last saved it, and the map can be saved as a PNG. Worlds from Terraria 1.3 and 1.4 are drawn; the .wld extension is shared with the Esri world file that georeferences an image, and the two are told apart by their bytes.
Per-format guides: .WLD
GIMP
XCF
Full
Open GIMP documents (.xcf) in the browser. Unlike a Photoshop file, an XCF stores no flattened image at all - it is only the layer stack - so Analyser composites the picture itself: it decodes each layer’s tiles (uncompressed, RLE or zlib), applies that layer’s mask, opacity and blend mode, and paints the stack bottom-up. Shows the full layer list with each layer’s mode, opacity, size, offset and mask, plus the canvas, colour mode, XCF version and palette, and the composite can be saved as a PNG. RGB, grayscale and indexed images are all handled; files saved at 16- or 32-bit precision are described rather than drawn.
Per-format guides: .XCF
Pixel art
Aseprite ASE
Full
Open Aseprite and LibreSprite pixel-art sprites (.aseprite / .ase) in the browser. Every frame is composited from the layer stack - these files store only the cels that changed, plus links back to earlier frames, so a frame has to be assembled rather than simply read - and the animation plays at the per-frame durations the file carries, not a single frame rate. Shows the layer tree with each layer’s blend mode, opacity and visibility, the named animation tags with their loop direction, and the canvas, colour depth and palette. Any frame can be saved as a PNG. RGBA, grayscale and indexed sprites are all decoded.
AI models
ONNX Safetensors GGUF GGML GGJT PT PTH CKPT Keras H5 HDF5
Full
Open machine-learning models and read what is actually in them. ONNX models and frozen TensorFlow graphs are drawn as a graph: every operation as a box, every tensor flowing between them as a line, laid out left to right by depth so parallel branches sit side by side. Neither format stores the connections - a node follows another because one of its inputs is one of the other's outputs - so the edges are recovered by matching those names. Alongside the picture: the operation mix that fingerprints the architecture, the input and output shapes (including the dynamic ones a model leaves open), every weight tensor with its shape, and the total parameter count. Weight files are read too - Safetensors and GGUF give up their full tensor list, precision and parameter count, and a GGUF also declares its architecture, context length and quantisation. A PyTorch checkpoint is a Python pickle, which is a program rather than a document, so nothing in it is ever run: the opcodes are read as bytes and every module it would import is listed, with anything a file of numbers has no business touching flagged. Keras models have their layer list read from the architecture JSON.
Per-format guides: .ONNX · .Safetensors · .GGUF · .GGML · .GGJT · .PT · .PTH · .CKPT · .Keras · .H5 · .HDF5
DAW project
ALS ALP RPP RPP-BAK
Full
Open Ableton Live sets (.als/.alp) and Reaper projects (.rpp) and see the arrangement drawn out: one row per track, every clip positioned exactly where the project puts it, on a real clock with a zoom for busy sections. A project file contains no audio at all - it is an edit list - so what is shown is read from the same numbers the DAW lays the session out with. Reads the tempo, time signature, track list with each track's type, clip count and plugins, and the media files the project points at but does not contain, which is what tells you whether a session that has been moved will still open complete. An Ableton set is gzipped XML and times everything in beats, so the tempo is what makes a real timeline possible; a Reaper project is plain text and already stores seconds.
Sketch
Sketch
Full
Open Sketch documents (.sketch) and read the whole design. The file is a ZIP of JSON, so nothing has to be guessed at: every page, artboard, group and layer appears in a browsable component tree with its type, child count and size in points. Components (Sketch calls them symbols) are listed with how many instances each one has, so you can see which parts of a design system are actually load-bearing and which are unused. All the copy in the document is pulled out into one readable list with the page each string sits on, the bitmaps placed into the design are extracted and shown, and the preview Sketch saves inside the file is displayed alongside the app version, fonts used, colour assets and shared styles.
Per-format guides: .Sketch
Disk images
ISO IMG IMA DSK IMC ADI VHD VHDX VMDK QCOW2 VDI
ID
Open raw disk images (IMG, IMA, DSK) like a folder - Analyser mounts the FAT12/16/32 filesystem, whether a bare SD card / USB / floppy image or an MBR-partitioned disk, and lists every file in a browsable tree and treemap so you can click any one to analyse it, reading the volume label, cluster size and free space along the way; it also carves every image out of the raw sectors, recovering deleted and orphaned photos the directory no longer lists. It identifies virtual-machine and optical images (VHD/VHDX Hyper-V, VMDK VMware, QCOW2 QEMU, VDI VirtualBox, ISO) and shows the partition table; non-FAT filesystems (ISO 9660, ext2/3/4, NTFS, exFAT) are identified but not yet browsed. Compressed backups (IMC - Runtime Software / GetDataBack; ADI - Active@ Disk Image / AOMEI Backupper) are identified with their label and details; convert them to a raw .img in the tool that made them to browse and carve them.
Per-format guides: .ISO · .IMG · .IMA · .DSK · .IMC · .ADI · .VHD · .VHDX · .VMDK · .QCOW2 · .VDI
Recordings
REC
ID
Identify REC files, telling apart PVR/DVR video recordings (MPEG-TS / MPEG program stream) from data-recovery session files (GetDataBack, ReclaiMe) and reading their details.
Per-format guides: .REC
Executables
EXE DLL MSI APK XAPK APKM APKS IPA DMG AppImage
ID
Identify and read metadata from programs and installers: Windows (EXE, DLL, MSI), Android (APK and the XAPK / APKM / APKS app bundles), iOS (IPA), macOS (DMG), and Linux (AppImage). For Android APKs it decodes the binary AndroidManifest.xml - package name, version, min/target SDK, the full permission and feature list, launcher activity, signing scheme (v1/v2/v3) and the native-code ABIs. Android app bundles (XAPK from APKPure, APKM from APKMirror, APKS from bundletool) are read from their manifest - app name, package, version, SDK levels, ABIs - with the base plus split APKs and OBB expansions listed and the whole bundle browsable as an archive.
Per-format guides: .EXE · .DLL · .MSI · .APK · .XAPK · .APKM · .APKS · .IPA · .DMG · .AppImage
Camera catalog
CTG
ID
Identify and decode Canon camera catalog files (CTG) - the DCIM index a Canon camera keeps to track each folder: the catalogued folder path, folder number, recorded-shot count, and photo / movie / voice-memo entry counts. Holds no image data.
Per-format guides: .CTG
Shortcuts
LNK URL WEBLOC
ID
Decode shortcut files: Windows shortcuts (LNK) - target path, arguments, working directory, icon, hotkey, window state, and target timestamp - plus internet shortcuts (URL) and macOS web shortcuts (WEBLOC), surfacing the URL or path they point to.
Other
TORRENT PART CRDOWNLOAD
ID
Identify BitTorrent files (TORRENT) and their file list, plus partial or incomplete downloads (PART, CRDOWNLOAD).
Per-format guides: .TORRENT · .PART · .CRDOWNLOAD
Niche / rare formats
ABC AFL ARX BIE Binwalk CGR COMask DIO FLS FWS H2V OFS PF RPP-bak RTX STY CLS SUN TP TSJ VDA
ID
A catch-all for rare and niche formats Analyser still identifies from their bytes: 3D caches and scans (Alembic ABC, FARO FLS/FWS), camera and design data (ARRIRAW ARX, Capture One masks, CATIA CGR), JBIG codestreams, firmware dumps (Binwalk), draw.io diagrams, OptimFROG DualStream audio, RTTTL ringtones, LaTeX style and class files, Sun Raster and Truevision TGA images, MPEG-2 streams, PVR/DVB recordings, Tiled tilesets, Windows Prefetch and Reaper project backups.
Per-format guides: .ABC · .AFL · .ARX · .BIE · .Binwalk · .CGR · .COMask · .DIO · .FLS · .FWS · .H2V · .OFS · .PF · .RPP-bak · .RTX · .STY · .CLS · .SUN · .TP · .TSJ · .VDA
Disk images / firmware
OVF OVA VBOX VMX CUE CCD NRG MDS MDF HEX SREC S19 S28 S37 MOT UF2 ELF AXF O SO OUT BIN DTB DTBO UIMAGE GPT MBR EXT4 EXT SQUASHFS SFS CRAMFS ROMFS WIM SWM ESD EWF JFFS2 UBIFS YAFFS2 ISZ CDI VMSN VMEM
ID
Inspect virtual-machine descriptors (VMware .vmx, VirtualBox .vbox, OVF/OVA), disc images (Nero .nrg, Alcohol .mds/.mdf, CloneCD), embedded firmware (Intel HEX, Motorola S-record, UF2, ELF/AXF, Device Tree Blobs, U-Boot uImage), partition tables (MBR/GPT with GUIDs), Linux filesystem superblocks (ext2/3/4, SquashFS, cramfs, romfs) and Windows imaging (WIM/ESD) - reading headers directly, no upload. The two generic suffixes are handled on their bytes rather than their name: a .bin opens in the raw-binary inspector (magic-byte guess, entropy profile, hex and ASCII dump) and names itself when the signature proves a raw BIN/CUE disc image or a Mega Drive cartridge dump, while a .out is read as either the ELF executable a compiler left behind or the plain-text log a batch job dumped. Either one is re-routed automatically when its bytes turn out to be a real format.
Per-format guides: .OVF · .OVA · .VBOX · .VMX · .CUE · .CCD · .NRG · .MDS · .MDF · .HEX · .SREC · .S19 · .S28 · .S37 · .MOT · .UF2 · .ELF · .AXF · .O · .SO · .OUT · .BIN · .DTB · .DTBO · .UIMAGE · .GPT · .MBR · .EXT4 · .EXT · .SQUASHFS · .SFS · .CRAMFS · .ROMFS · .WIM · .SWM · .ESD · .EWF · .JFFS2 · .UBIFS · .YAFFS2 · .ISZ · .CDI · .VMSN · .VMEM
Molecules
MOL SDF SD MOL2 XYZ PDB ENT PQR GRO CIF MMCIF MCIF
ID
Open chemical structures and see the molecule: MOL and SDF connection tables, MOL2, plain XYZ coordinates, Protein Data Bank entries and mmCIF/CIF crystallographic files, all drawn in an interactive 3D viewer you can rotate, zoom and restyle. Small molecules come up as ball-and-stick with the standard element colours; proteins and nucleic acids get a cartoon instead, drawing each chain as a ribbon along its backbone with helices and sheets picked out and any bound ligand still shown as sticks - which is the only way a structure of tens of thousands of atoms is readable at all. Alongside the picture, the composition is worked out from the atoms actually present rather than from any label in the file: molecular formula in Hill notation, molecular weight, net charge, element counts, and for a macromolecule the chain, residue and secondary-structure counts plus every non-polymer group - bound drugs, cofactors, metal ions and crystallisation buffer. PDB headers give up the entry ID, title, experimental method and resolution; an SDF is stepped through record by record with each molecule's tagged data fields read out.
Per-format guides: .MOL · .SDF · .SD · .MOL2 · .XYZ · .PDB · .ENT · .PQR · .GRO · .CIF · .MMCIF · .MCIF
System / misc
OPML RSS ATOM DESKTOP SERVICE CRASH AB JOB POL SCR DS_STORE THUMBSDB DSYM DWARF SDB AGC BK
ID
Inspect OS and system files: OPML subscription lists, RSS/Atom feeds, Linux .desktop launchers and systemd .service units, Apple .crash reports, Android .ab backups, Windows Task Scheduler .job, Group Policy Registry.pol, and .scr screensaver PE headers, plus identification of .DS_Store, Thumbs.db, dSYM/DWARF and shim .sdb. Scene .nfo ASCII art now opens in a CP437 viewer - see Text art above.
Per-format guides: .OPML · .RSS · .ATOM · .DESKTOP · .SERVICE · .CRASH · .AB · .JOB · .POL · .SCR · .DS_STORE · .THUMBSDB · .DSYM · .DWARF · .SDB · .AGC · .BK
BIM / IFC
IFC
ID
Open an IFC building model and see how it is put together. IFC describes a building as a graph of objects - walls, doors, spaces, each with properties - and stores no hierarchy at all: what contains what lives in separate relationship objects, so the spatial tree of project, site, building, storey and elements is assembled by following them. That tree is shown in full, with the elements on each storey grouped by type and the property sets attached to each one. The building is also drawn: shapes that are a 2D profile extruded along a direction (which is what most walls, columns and slabs are), explicit meshes, and the mapped items that place a type's shape at each window and door. Shapes that need a solid-modelling kernel to evaluate - a wall with an opening cut through it - are counted and named rather than drawn wrong. Alongside, the header names the authoring tool and exporter that wrote the file, which matters more than it sounds: how much a model actually contains depends heavily on which program produced it.
Per-format guides: .IFC
Disk images / firmware (more)
TRX DFU FD ROM UBI SIMG ITB DSK IMA VFD VMSD NVRAM PVM HDD MF VBK
ID
Identify and read more disk images, firmware and VM files: TRX router firmware, USB DFU images, UEFI/BIOS flash volumes (.fd/.rom), Linux UBI volumes, Android sparse images (.simg), U-Boot FIT (.itb), raw floppy images (.dsk/.ima/.vfd with FAT boot sector), VMware snapshot metadata and NVRAM, Parallels VMs and disks (.pvm/.hdd), OVF manifests (.mf) and Veeam backups (.vbk).
Per-format guides: .TRX · .DFU · .FD · .ROM · .UBI · .SIMG · .ITB · .DSK · .IMA · .VFD · .VMSD · .NVRAM · .PVM · .HDD · .MF · .VBK