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GIF speed changer
Change GIF playback speed by editing delays without re-encoding pixels.
GIF
GIF
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
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How to use this tool
- Choose an animation file, or select static images in frame order for a maker.
- Set the available dimensions, timing, play count or frame selection controls. Frame numbering starts at one.
- Process the animation, preview where applicable and download the actual output. Reset clears local inputs and results; Cancel terminates processing.
Examples
A three-frame animation with 40, 120 and 200 ms delays and three total plays.
Limitations
- Timing and loop edits preserve original GIF image data, palettes, transparency and disposal. GIF delays use 10 ms units. Viewers may clamp zero or very short delays.
- 20 MiB combined input; 40 MiB output; at most 300 frames, 4096 pixels per side, 4 megapixels per frame, 20 million total canvas pixels and five minutes per cycle. Zero delays count as 100 ms for duration limits.
- APNG input accepts non-interlaced 1–8-bit grayscale/palette or 8-bit RGB/RGBA. Re-save 16-bit or Adam7 inputs. Makers accept static PNG, JPEG and WebP; animated inputs belong to their dedicated converters. Stored pixel orientation is used for JPEGs.
- Geometry uses nearest-neighbor resampling. Total plays 0 means infinite looping; positive values count complete cycles. GIF supports at most 65536 total plays.
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