What is a .afpub file?
AFPUB is a document from Affinity Publisher, Serif’s page-layout app. Created and opened by Affinity Publisher.
- Did you know
- Affinity Publisher was the last of Serif’s three Affinity apps to arrive, completing the suite in 2019.
- Serif was bought by Canva in 2024, and a year later Publisher was rolled into a single free Affinity application.
- Affinity Publisher's StudioLink lets you switch into the Photo and Designer toolsets inside the same document, folding photo-editing and vector tools into a page-layout app.
- What Analyser reads
- 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.
- Depth of analysis
- .afpub 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 .afpub file
- Drag a .afpub 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.