What is a .MAFF file?
MAFF was a Firefox add-on’s way of saving complete web pages in one file.
- Did you know
- MAFF saved web pages as a ZIP, but faded after Firefox changed its add-on system.
- MAFF was an alternative to MHTML, bundling a page’s resources in a ZIP rather than encoding them inside a single MIME file.
- The add-on stopped working when Firefox dropped legacy extensions for the WebExtensions system, leaving the format orphaned.
- What Analyser reads
- Open documents, ebooks 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.
- Depth of analysis
- .MAFF 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 .MAFF file
- Drag a .MAFF 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.