Optimize a GIF online — reduce GIF size free
Make an animated GIF much smaller with color reduction and frame optimization, while keeping it smooth. Perfect for GIFs that are too large to upload or email.
How to optimize a GIF
- Drop your GIF into the upload box, or click to browse for it.
- Apply color reduction and frame optimization to shrink the file while keeping it smooth.
- Click Process — everything runs instantly in your browser, with nothing uploaded.
- Preview the result and download it — or send it straight to another JustGIF tool to keep editing.
Features
- Color reduction and frame optimization
- Big size savings with minimal quality loss
- Runs locally in your browser — your files never leave your device
- 100% free: no sign-up, no watermark, no file-count limit
- Works on any device — Windows, Mac, Linux, Android and iPhone
Frequently asked questions
How do I make a GIF smaller?
Lower the color count, reduce the dimensions, or drop frames — this tool does all three automatically.
Is GIF Optimize free to use?
Yes. GIF Optimize is completely free with no account, no watermark, and no limit on how many files you can process.
Do my files get uploaded to a server?
No. JustGIF processes everything locally in your browser, so your files stay private on your device and nothing is uploaded.
Does it work on my phone?
Yes — JustGIF runs in any modern browser, including Chrome and Safari on phones and tablets, with no app to install.