WebP is what Google, WhatsApp stickers, Discord, Telegram and most websites now use for animations, because it is far smaller than a GIF. But plenty of places still want a GIF: older chat apps and forums, email newsletters, slide decks, some upload forms and editing programs. Most converters turn an animated WebP into a still picture of its first frame; this one keeps every frame.
The WebP is taken apart by the site's own reader, each frame decoded by your browser and drawn the way the animation plays, and the GIF written by gifenc, an open-source GIF encoder, with its own 256-colour palette for each frame. It is free to use, with no account and no upload limit, and it runs entirely in your browser: nothing is uploaded, and while the page stays open, a feature you have already used keeps working offline.
- Does the GIF keep the animation?
- Yes: every frame of the WebP becomes a frame of the GIF, at the same speed, and it loops the same number of times (for ever, for most animations). GIF stores frame times in hundredths of a second, so each frame is rounded to that, with the rounding carried over so the whole animation keeps its length; frames shorter than two hundredths are lengthened to two, since browsers slow down anything faster.
- Why does the GIF look a little different, or come out bigger?
- A GIF can hold only 256 colours in a frame, while WebP has millions, so smooth gradients and photos can show slight banding. GIF also compresses far less well than WebP, so the GIF is usually several times larger. To make it smaller, limit the width or choose fewer colours.
- What happens to transparent backgrounds?
- They stay transparent. A GIF pixel is either fully see-through or fully solid, so soft, half-transparent edges are rounded to one or the other: under half opaque becomes clear. If the edges look rough on your background, choose Put on white.
- Which browsers does it work in?
- Current Chrome, Edge, Firefox and Safari. The animation is taken apart by this page rather than by the browser, so it does not depend on the browser's own support for animated WebP, only on its ability to show a still WebP, which all of them have.
- How large can the WebP be?
- Up to 200 MB, a picture of up to 16.7 million pixels and 5,000 frames. Very long, large animations are refused with a suggestion to choose a smaller width, since the GIF would run to hundreds of megabytes.
- Are my WebP files uploaded?
- No. They are read and the GIFs written in this browser tab on your device; nothing is sent to this site or anywhere else.