How to resize a GIF
- Choose by percentage (such as 50%) or exact pixels. Leave “Keep proportions” ticked and enter just a width or a height to avoid stretching.
- Choose your GIFs or drop them on the box above.
- Download the resized GIFs.
Common sizes
| Use | Width |
|---|---|
| Emoji and stickers | 128 px |
| Chat reactions | 240–320 px |
| Emails and forums | 480 px |
| Website banners | 600–800 px |
Many forums, chat apps and email newsletters limit GIF file size, often to between 1 and 10 MB. Resizing is the most effective way to fit those limits without removing frames.
How it works
The GIF is decoded frame by frame, including frames that only update part of the picture, so each full frame is resized correctly. The frames are then scaled with high-quality smoothing and encoded again with the best 256 colours for each frame. Frame timing, looping and transparency are kept.
Other ways to shrink a GIF
- Make it shorter by remaking it from the video with a later start or earlier end.
- Lower the frame rate when remaking it from video, such as 8 fps instead of 15.
- Convert it to MP4 if the place you’re posting accepts video; it’s usually far smaller.
Why resized GIFs can look different
Shrinking a GIF blends neighbouring pixels, which creates new in-between colours. Because each frame can only hold 256 colours, the best palette is chosen again for every resized frame. Most GIFs look the same or cleaner afterwards; pixel art, which relies on hard edges, looks best resized to exactly half or a quarter of its size.
Privacy
Your GIFs are resized in your browser using gifuct-js and gifenc, two open-source libraries. Nothing is uploaded.
Questions
Will the animation still work?
Yes. Every frame is resized and the GIF is rebuilt with the same frame timing, so it plays exactly as before, just at the new size. It loops forever, as most GIFs do.
How much smaller will the file get?
File size roughly follows the number of pixels, so halving the width and height makes the GIF about a quarter of the size. Reducing to 75% roughly halves it.
Is transparency kept?
Yes. Transparent areas stay transparent. As with all GIFs, each pixel is either fully transparent or fully visible, so very soft edges can look a little rough.
Can I make a GIF bigger?
Yes, by entering larger pixel sizes, but enlarging can't add detail, so the GIF looks softer. Making GIFs smaller is what this tool is mostly for.
Last reviewed 9 November 2026