GIF Resizer — Resize GIF & Change GIF Speed

Resize animated GIFs without losing the animation

Most image editors flatten a GIF to a single frame when you resize it. This GIF resizer keeps every frame, every delay and the transparency, so the result plays exactly like the original — just at the size you need. Enter a width or height in pixels, scale by percentage, or use a preset such as 128×128 for Slack and Discord emojis or 480 px wide for a blog post.

The GIF is decoded in your browser, every frame is rebuilt at full size and redrawn with high-quality smoothing, then encoded again. No upload, no watermark and no sign-up — the file stays on your device.

Change the speed of a GIF

The same tool works as a GIF speed changer. A speed multiplier scales all frame delays at once, keeping the original rhythm: 2× plays twice as fast and 0.5× plays at half speed. If the source has uneven timing, choose Fixed frame rate and set a value such as 10 or 15 fps to give every frame the same delay. The status line shows the new loop duration before you encode. Note that GIF stores delays in hundredths of a second and browsers slow down anything under 20 ms, so the fastest useful rate is 50 fps.

Changing the shape

Turn off Keep aspect ratio to set width and height independently. Then decide how the animation fills the new frame: Stretch distorts it to fit, Crop to fill scales it up and trims the edges, and Fit keeps the whole animation visible with transparent bars around it. Smaller output sizes also make the file much lighter; for further savings use the GIF compressor afterwards.