Usually a compatibility request
WebP is the better format on almost every measure, so this conversion is rarely about quality — it is about a destination that will not take WebP. Older forum software, some email-signature builders, embedded displays, print-shop portals, and internal tools written years ago still list .gif among the handful of extensions they allow. When a form has rejected your WebP, converting it is quicker than arguing with the form.
Animation is not carried over
Worth saying plainly: an animated WebP converts to a still GIF of its first frame. The tool decodes one frame, quantizes it, and writes a single-frame file — it does not assemble animations, so a looping sticker or screen recording arrives frozen. If animation is the whole point, the MP4 to GIF tool on this site is the one that builds a moving GIF, using a short video clip as its source.
Palette and transparency
Two more things change on the way in. The image is reduced to a 256-color palette, which flat graphics survive well and photographs do not — gradients and skin tones pick up visible steps, and no setting avoids that, because 256 colors is the format’s own ceiling. And the GIF written here is opaque: transparency in the WebP is not carried through, so a cut-out background comes out filled in solid. Keep the WebP if either of those matters. The conversion itself runs entirely in this tab, with no upload and no sign-up, and a queue converts three at a time with a ZIP at the end.