ByteScope

MP4 → GIF Converter

Turn video clips into GIFs — trim, tune, download.

Your files never leave your browser — all processing is local.

Your video never leaves your computer.

Our servers can't see your files — there is no upload path. no upload · no watermark · no size limit · no queue

Drop a video here

MP4, WebM, MOV — or click to browse / paste

About this tool

Pick the exact clip with the trim handles, then balance quality against file size with the fps, width, palette and dithering controls. GIF grows fast — 480px wide at 10 fps is the sweet spot for most clips — and the size readout updates every run so you can tune it until it's right.

Everything — demuxing, decoding, scaling, encoding — runs inside your browser using the hardware-accelerated WebCodecs API. Nothing is installed and nothing is uploaded.

Frequently asked questions

Why is there no file size limit or queue?
Because there is no server involved. Upload-based converters shuttle your video to their machines, so they meter and queue you. Here the conversion runs on your own hardware — a 500 MB video starts converting the instant you drop it.
What happens to the audio track?
GIF has no sound, so the audio track is simply dropped. The tool reminds you of this on every conversion.
Is my video uploaded to a server?
No — and you can verify it. Open your browser's DevTools Network tab while converting: there is no upload request, because the pipeline (decode, resize, encode) runs entirely on your machine via the WebCodecs API. Our servers cannot see your files; there is no upload path to send them through.
Is there a watermark or a file size limit?
No watermark, ever. There's no hard file size limit either — a single conversion is capped at 60 seconds of video to keep memory in check, and you can trim a long video into ranges.
Why is this faster than online converters for big files?
Upload-based converters spend most of their time transferring your file and waiting in a queue. Here a 100 MB video starts converting immediately, using your browser's hardware-accelerated video codecs.
Which browsers are supported?
Any browser with the WebCodecs API: recent Chrome, Edge, Safari and Firefox. If H.264 encoding isn't available, the tool automatically falls back to the royalty-free VP9 codec in a WebM file and tells you.