What is a .EXT file?
EXT is an image of a Linux extended filesystem.
- Did you know
- The ext family has been Linux’s native filesystem line since the early 1990s.
- The extended file system was written by Rémy Card in 1992 and was the first to use Linux’s Virtual File System layer.
- It overcame the Minix file system’s limits, allowing partitions up to two gigabytes and filenames up to 255 characters.
- What Analyser reads
- 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.
- Depth of analysis
- .EXT is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .EXT file
- Drag a .EXT file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.