gifski

video → gif · gif → video · bulk processing · 100% local via ffmpeg.wasm

loading ffmpeg…

Note: All processing runs locally in your browser — no files are uploaded anywhere. First run downloads ~30 MB of WASM. Supported: MP4, WebM, MOV, AVI, MKV.

drop videos here or click to browse

mp4 · webm · mov · avi · mkv — multiple files OK

frame preview (first file)

FPS 15

Width px (0=auto)

Quality 90

Dither

Start (s)

Duration (s, 0=full)

Colours

Loop

Note: Converts GIF files to MP4 (H.264) or WebM (VP9) using ffmpeg.wasm. Bulk processing — drop as many GIFs as you like.

drop GIF files here or click to browse

gif — multiple files OK

Output format

CRF (quality) 23

Scale width (0=auto)

Speed preset