Combine GIFs
Put animations side by side, stacked, in a grid, or one after another, with shared timing.
Free, no uploads, no sign-up. Runs 100% in your browser.
How Combine GIFs works
Animations are decoded into full frames in your browser (GIF with gifuct-js, APNG with UPNG.js, WebP frames with the browser decoder), edited, then written back out. GIF is encoded with gifenc plus our own frame optimiser; WebP, MP4 and WebM go through ffmpeg.wasm. When animations have different lengths, the shorter ones loop until the longest one finishes (or everything stops with the shortest).
Input: GIF, APNG, WEBP, AVIF. Output: GIF, APNG, WEBP, MP4, WEBM.
How to use Combine GIFs
- Drop one or more images onto Combine GIFs.
- Tune the options. The before/after preview updates live.
- Process the batch.
- Download a single image, or everything as a ZIP.
Tips
- Most image tools accept many files at once.
- WebP and AVIF give much smaller files than JPG at the same visual quality.
- Set a default image quality in Settings. Tools that do not choose their own quality use it.
Combine GIFs FAQ
- Are my files uploaded?
- No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
- Is it free? Are there limits or watermarks?
- Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
- Does it work offline?
- Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.
Related tools
- GIF Frame Editor: Reorder, delete, duplicate and retime frames, set loop count, add frames, then save as GIF, APNG, WebP or video.
- Split Screen Video: Show 2 to 4 videos side by side, stacked or in a grid, with gap colour and sound choice.
- Collage Maker: Arrange photos into grid layouts with spacing and borders.
- Image Compressor: Shrink images in bulk with quality and width controls and live savings.