Make your GIF smaller.
Compress animated GIFs to the size you need — right in your browser. Free, no sign-up, nothing uploaded.
Goal
Smaller file, same dimensions, barely visible change.
Drop GIFs here
Compressed on your device. Your GIFs are never uploaded.
How to make a GIF smaller
You can shrink a GIF in three steps without installing anything. GifSmaller runs gifsicle in your browser, so the file stays on your device.
- 1
Choose a goal
Pick Balanced for a smaller file that looks the same, a platform preset such as Discord emoji (256 KB), or type your own target size.
- 2
Add your GIFs
Drop one or more GIFs onto the page, choose them from your device, or paste from the clipboard. Compression starts right away.
- 3
Download the result
Compare the before and after previews, then download each GIF or all of them as a .zip file.
GIF size limits by platform
Common upload limits for animated GIFs. Platforms change these from time to time, so check their help pages if an upload fails.
| Platform | Max file size | Notes |
|---|---|---|
| Discord custom emoji | 256 KB | Shown at up to 128×128 px. |
| Discord upload (free) | 10 MB | Higher with Nitro. |
| Slack custom emoji | 128 KB | Square images, 128×128 px recommended. |
| X (Twitter) | 15 MB | One GIF per post. |
| GitHub issues and PRs | 10 MB | Per image or GIF attachment. |
| Gmail attachment | 25 MB | Larger files become Drive links. |
Last checked: November 2026
Why GifSmaller
- Private by design
- GIFs are compressed on your device with WebAssembly. Nothing is uploaded, so there is no server copy to leak or delete.
- Hits the size you need
- Set a target such as 256 KB or 10 MB. GifSmaller tries lossless optimization first, then the gentlest lossy level that fits, and only then smaller dimensions.
- Batch and zip
- Add as many GIFs as you like. They are processed one after another and can be downloaded together.
- Free, no account
- No sign-up, no watermark and no daily limits. It works in any modern browser on desktop, iPhone and Android.
Frequently asked questions
How do I make a GIF smaller without losing quality?
Choose Balanced. It first removes redundant data losslessly, then applies light lossy compression that is hard to see. The dimensions and frame count stay the same.
Are my GIFs uploaded to a server?
No. Compression runs entirely in your browser with WebAssembly. Your files never leave your device.
How do I get a GIF under 256 KB for a Discord emoji?
Choose the Discord emoji goal. GifSmaller resizes the GIF to 128 px, the size Discord displays emoji at, and then compresses it until it is under 256 KB.
What does lossy compression do to a GIF?
Lossy compression lets the encoder change pixels slightly so the image compresses better. Low levels are nearly invisible. High levels add grain or noise, especially in gradients.
Why is my GIF still too big?
Long or high-resolution GIFs carry a lot of frames and pixels. If the target cannot be reached even at smaller dimensions, GifSmaller shows the smallest result it found. Try a larger target or trim the GIF first.
Is GifSmaller free? Does it add a watermark?
It is free to use, with no account, no watermark and no limit on the number of files.
Does it work on iPhone and Android?
Yes. It works in current versions of Safari, Chrome, Firefox and Edge on phones, tablets and computers.
Can I compress several GIFs at once?
Yes. Add multiple files at once. They are compressed one after another, and you can download them all as a single .zip file.