Compress GIF — without uploading it
Shrink GIFs by 30–70% using gifsicle running in your browser. No upload, no quality surprises — preview the result before you download.
Working…
Why GIFs get huge — and what compression actually does
GIF stores every frame as an indexed-color image, and most tools write each frame in full. gifsicle's optimizer keeps only the pixels that change between frames, merges identical regions, and (optionally) re-encodes with controlled loss that's invisible at normal viewing sizes. That's how a 12 MB recording becomes a 4 MB GIF that looks the same.
Need it even smaller? Resize the GIF first — width is the single biggest size lever — or convert it to a tiny MP4 if the destination supports video.
Frequently asked questions
How does GIF compression work here?
GIF Den runs gifsicle — the same optimizer used by professionals for decades — compiled to WebAssembly, directly in your browser. It removes redundant pixels between frames, optionally reduces colors, and applies lossy re-encoding. Your GIF is never uploaded anywhere.
How much smaller will my GIF get?
Typical savings are 30–70% depending on the source. The lossy slider controls the trade-off: 30–60 is usually invisible to the eye, higher values save more but can add visible noise.
Is there a file size limit?
No fixed limit — because nothing is uploaded, there is no server cap. Very large GIFs (over ~50 MB) just take longer since everything runs on your own device.
Will compression remove the animation or loop?
No. Frames, timing, and looping are preserved — only the encoding gets more efficient.