MP4 to GIF

How MP4 to GIF works

Turn the first seconds of a video into a looping GIF. ffmpeg.wasm scales, samples and encodes the clip to GIF inside your browser. Everything happens inside this page: the tool reads your input, runs the calculation or conversion locally, and hands the result back to you. Nothing is transmitted, because there is no backend to transmit it to.

That design choice is deliberate. Most free tool sites upload your files to a server, process them there, and quietly keep a copy. Toolcin cannot do that — the site is a set of static files. If your connection dropped the moment the page finished loading, every tool would still work.

Where GIF still wins

A GIF plays automatically everywhere, including places that block video, and it can be pasted into a chat like an image. That is why people still convert clips to GIF despite the file size.

ffmpeg decodes the video, scales it down and writes a GIF. Because GIF stores every frame independently, a long clip becomes enormous quickly — a 10-second GIF at full resolution can exceed 20 MB.

Making the file smaller

Three levers, in order of effect: shorter duration, smaller dimensions, lower frame rate. Halving the width quarters the pixel count and usually cuts the file by more than half.

Keep the clip under about six seconds and around 480 pixels wide for a chat-friendly file.

Colour and quality

GIF is limited to 256 colours per frame, so gradients band and photos look posterised. That is a format limit, not a bug — if quality matters, keep the MP4 and use a video player.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions