How to Convert GIF to WebP in Your Browser

How GIF becomes WebP

1. The browser decodes the GIF's LZW-compressed, indexed-color data, expanding its limited palette — up to 256 colors — into standard RGB pixel values.
2. Only the first frame of the GIF is decoded; any additional animation frames, their timing, and the loop count are not read into the conversion.
3. Binary transparency from the GIF, where each pixel is either fully opaque or fully transparent, carries into the decoded pixel data as alpha.
4. That single frame is drawn to canvas and re-encoded by the browser's WebP encoder at your chosen quality, producing one static WebP file.

What changes when you convert

The most important thing to understand about this conversion: WebP itself supports animation, so it's easy to assume converting an animated GIF carries its motion over. It does not. This tool decodes only the first frame, and the result is always a single static WebP image, with no timing and no loop — if you need the animation to survive, this conversion path isn't built for that, and the source's motion is simply dropped.

Color quality tends to improve. GIF's palette caps out at 256 colors, so gradients and photographic detail are often visibly banded in the source; WebP encodes from the full-color pixel data the browser already decoded, so subtler color differences that the GIF's palette couldn't represent can show up in the output. Transparency carries over as a strictly on/off matter — GIF only supports binary transparency, never partial opacity, and that same hard-edged transparency is what appears in the WebP when the encoder supports alpha, without gaining any soft edges the source never had.

When WebP is the right choice — and when it isn't

WebP is a reasonable upgrade for a genuinely static GIF — an icon, a simple graphic, or a file that only ever had one frame — headed to a modern web page, since it decodes reliably in current browsers and compresses flat, non-photographic content well. It's a poor substitute for an animated GIF used for motion: because this conversion always drops animation, a GIF being used as a lightweight animated graphic should either stay a GIF or be re-authored as an animated WebP or video through a tool built for that job, not run through a single-frame converter.

If broad compatibility with older tools, forums, or email clients matters more than file size, keeping the original GIF — or converting a single-frame GIF to PNG instead — may serve the purpose better than WebP.

Limitations and privacy

This conversion is single-frame only: any animation, frame timing, and loop settings in the source GIF are discarded, and there is no setting here to preserve them. The output reflects only whatever the GIF's first frame contained.

Conversion runs entirely in your browser — the GIF is decoded, its first frame extracted, and the WebP written locally, with nothing sent to a server.