Video
MP4 to GIF Converter
Convert short MP4 / WebM clips to optimized GIF in your browser. FPS, width, palette — all tunable. Local FFmpeg.wasm, no upload.
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About this tool
Need a GIF for a README, a Slack reaction, a tweet? Online converters are free until your video has anything sensitive in it (it doesn't matter that they "promise" not to keep it — you can't audit them).
This tool runs a real FFmpeg compiled to WebAssembly inside your browser. The video is read from your disk into memory, processed locally, and the GIF is downloaded — never uploaded.
Best results: ≤ 10 seconds source clip, 480px wide, 12-15 fps. Larger sources still work but eat RAM.
Frequently asked questions
- What's the file size limit?
- Hard limit is your browser's memory. Practical limit: a 10-second 1080p MP4 (~20 MB) is fine. Bigger may stall.
- Why is the GIF bigger than the MP4?
- GIFs use a 256-color palette and lossless compression — they will be larger than equivalent MP4 / WebM. Trim the clip, lower fps, or reduce width to shrink.
- Does this upload my video?
- No. FFmpeg runs as WebAssembly inside the page. The video bytes never leave your computer.
- Why does the first conversion take a few seconds longer?
- Loading the FFmpeg WebAssembly core (~30 MB) on first use. After that it's cached.