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GIF & Video Speed Changer + Loop Editor

Speed up or slow down GIFs and MP4/WebM videos, edit per-frame delays, or change the GIF loop count 100% locally in your browser.

Drop a GIF, MP4/WebM video, WebP, APNG, or AVIF to change speed or loop count
Speed Up GIF/Video • Slow Down GIF/Video • Per-Frame Delay & Loop Count — processed locally
or press Ctrl+V to paste from clipboard

Speed Up or Slow Down GIF & Video

Speed up GIFs and MP4 videos at 1.5×, 2×, or 4× speed, or slow down clips to 0.5× or 0.25× for smooth slow-motion playback.

Per-Frame Delay & Timing Editor

Apply a uniform frame delay across the whole animation or customize individual frame pause times (in 1/100s centiseconds) to hold on a punchline.

GIF Looper & Repeat Count Changer

Set your GIF, WebP, or APNG to loop forever (infinite loop), play once and stop on the final frame, or repeat an exact number of times.

GIF Speed Changer, Video Speed Controller & GIF Looper

Downloaded a GIF that plays too fast to read, or want to speed up a video or slow down a GIF? With AnimTool's online GIF speed changer and video speed editor, you can make any animated GIF, MP4/WebM video, WebP, APNG, or AVIF faster or slower in seconds—without re-uploading or losing quality.

You also get full frame-by-frame timing control: open the per-frame delay list to add a 2-second pause (200cs) on the last frame before the animation repeats, or use the GIF looper settings to switch between infinite looping, playing once, or a custom loop count.

How to Speed Up, Slow Down, or Loop a GIF or Video

  1. Drop your GIF or video: Load any animated GIF, MP4/WebM/MOV video, WebP, APNG, or AVIF file.
  2. Change speed or frame delay: Click a speed multiplier preset (2× Faster, 0.5× Slower), enter a uniform delay in centiseconds (1/100s), or tweak individual frame delays.
  3. Set loop count: Pick Loop Forever, Play Once, or type a custom loop repeat count.
  4. Apply & download: Click Apply Animation Settings, check the live preview, and save your updated animation or video.