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GIF flip
Mirror every GIF frame horizontally or vertically.
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
- Every frame is composited with disposal and transparency before transformation. GIF uses binary alpha (threshold 128), 10 ms timing and at most 255 opaque colors per frame; quantization can change colors. APNG output preserves RGBA samples. Profiles and metadata are omitted when re-encoding.
- 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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