What is a .FF file?
FF is a farbfeld image, a deliberately minimal lossless format from the suckless project.
- Did you know
- farbfeld is designed to be the simplest possible image format to process.
- An FF file stores each pixel as 16-bit red, green, blue and alpha values in big-endian order, always including alpha.
- farbfeld comes from the suckless project and avoids built-in compression, expecting tools to pipe and compress it externally.
- What Analyser reads
- 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, Windows WMF/EMF metafiles, Apple ICNS icons, CUR/ANI cursors, MNG and Lottie animations.
- Depth of analysis
- .FF 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 .FF file
- Drag a .FF 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.