jarvisbox

GIF 動圖製作器

將多張圖片合成為流暢的動態 GIF,可自訂幀延遲與尺寸。

100% client-side · ffmpeg.wasm · no upload

Pick 2 or more images to begin.

How to make a GIF from images

  1. Pick the image frames in playback order. JPG, PNG and WebP all work.
  2. Set a frame delay — 100 ms ≈ 10 fps; 40 ms ≈ 25 fps (smoother but larger).
  3. Set the output width — keep it small (320–480 px) to keep file size sane.
  4. Press Build GIF, wait for ffmpeg.wasm to finish, then download.

Common use cases

Related: Animated WebP Maker · GIF to MP4 · Video to GIF · All animation tools

常見問題

How many images can I combine?
Most browsers handle 200+ frames comfortably. Very long sequences may run out of memory on mobile devices.
Why is the first run slow?
ffmpeg.wasm is about 25 MB and is downloaded once, then cached. Subsequent runs reuse the cache.
Are my images uploaded?
No. ffmpeg.wasm runs entirely inside your browser via WebAssembly.

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