Video & GIF Tool

Trim, crop, resize, compress, convert, pull audio, grab a frame, and build a palette-optimised GIF. FFmpeg runs inside this tab — your video is never uploaded anywhere.

Checking browser support… FFmpeg core downloads on your first render (~30 MB, cached for the session)

Drop a video here

MP4, MOV, WebM, MKV, AVI or an animated GIF. Everything is decoded and re-encoded on this device.

Works best under 500 MB. FFmpeg in the browser can address roughly 2 GB of memory, so long 4K clips may run out before they finish.

What to make

Trim, crop, resize, compress or convert the clip.

Container and codecs

Encoding

Copy rewraps the selected range without touching the pixels — lossless and near-instant.

Quality CRF 23

Lower is better looking and bigger. 18 is visually lossless, 28 is a small share-anywhere file.

Encoder speed

Resize

Width

Height

Keep aspect ratio

Remove the audio track

Estimated output: —

Crop Crop the picture

Waiting for a video

Drop a file to get started. Nothing is uploaded.

Details & command log

No command has run yet.