A JPG as a GIF, with the best 256 colours chosen for that photo — on your own device.
PNG, JPG, WebP or BMP · converted to GIF with an optimised palette, on your device
No size limit · files are processed on your device and never uploaded · how it works
Runs in your browser. Files are never uploaded — you can go offline after the page loads.
Drop files, pick options, download. Whole folders at once, no signup, no daily limit.
The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.
Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.
Forum avatars, legacy CMSes and a few stubborn upload forms still take GIF only. A photo squeezed into 256 colours needs those colours chosen well — this tool computes the palette from your image and dithers with it, which is the difference between "looks fine" and visible banding.
Everywhere else, keep photos as JPG or WebP — smaller and full-colour. This converter exists for the places that leave you no choice.
Legacy systems, forum avatars and a few upload forms still accept only GIF. When one of those is the destination, an optimised palette (what this tool computes) is the difference between a decent result and a posterised mess.
Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.
InfyTool is built by the same team as these free libraries.