Twitch Clip to GIFTurn any Twitch clip into a shareable GIF — free, in your browser.

The Make GIF button runs gifenc, a small encoder that is fetched only the first time you use it and then works entirely on your device. It decodes the source into an off-screen video element, seeks to one frame every twelfth of a second, draws each frame into a canvas capped at 480 pixels wide, and reduces it to a 256-colour palette that is recalculated for every single frame. Every frame costs its own seek and decode instead of one straight pass through the file, which is why the status line counts frames as they are written rather than showing bytes.

GIF has no equivalent of the motion-compensated, lossy compression that H.264 uses inside an MP4. Each frame here is written as a complete palettised bitmap and squeezed only by lossless LZW, so the file grows roughly in step with the frame count. At 480 by 270 that is about 127 KiB of raw palette indices per frame before compression, and a ten-second export is 120 frames. Fast camera movement and confetti-style noise compress worst; a mostly static shot compresses best.

The length limits are fixed in the code rather than left to you. The encoder stops at 200 frames, which works out at roughly 16.7 seconds, but the earlier caps almost always bind first: a clip is sampled from its first 15 seconds, or its whole length if it is shorter, and on a VOD the button only appears once Trim is switched on and the selection is 15.5 seconds or less. A live recording cannot be exported as a GIF at all - the button is offered for clips and for trimmed VOD selections only.

Because no rendition in the quality list is narrower than 480 pixels, and the canvas never upscales, the GIF comes out at the same width whichever one you choose; picking a lower quality mainly means less video to fetch before encoding starts. The 256-colour ceiling is the part you actually see in the result: dark scenes and smooth gradients band visibly, while flat-coloured overlays and a plain webcam shot survive it well.

A GIF carries no audio track at all, so a moment where the sound is the joke is better served by the normal video download - an .mp4, or a .ts file if the in-browser converter cannot load. A VOD GIF also does more work before encoding: the segments covering your trimmed selection are refetched and rebuilt into an MP4 with mux.js, and that stage fills the first half of the progress bar before any frame is sampled. A clip arrives as a single file, so its bar stays at zero until frame encoding begins.