A GIF has at most 256 colours a frame, so as PNG, TIFF or BMP — or lossless WebP — its colours are kept exactly, while JPG and lossy WebP compress them at the Quality you choose.
- An animated GIF stays animated as GIF or WebP — every frame, its timing and the loop count; as anything else it gives its first frame. One with more than 1,000 frames — or more than a billion pixels across them all — keeps only its first frame, and the row says so.
- Transparency is kept as WebP, PNG and TIFF, and all or nothing as GIF; JPG and 24-bit BMP fill it with the Background colour.
- Choosing GIF itself re-encodes it — to resize it or strip its metadata.
- GIF files can be up to 256 MB and 268 megapixels.
- WebP is made by the browser's own encoder in Chrome, Edge and Firefox and by libwebp (WebAssembly) in Safari; PNG and JPG by the browser; GIF, TIFF and BMP by the tool itself — so every format can be made in every modern browser.
- Camera details, location and other metadata are removed, and so is any colour profile: colours are converted to sRGB. A photo's orientation is applied first, so it stays the right way up.
How to do it
- Choose your GIF files, or drop or paste them on the page — as many as you like.
- Each starts as a WebP; pick another format for every file with Convert to in Settings, or for one file on its row.
- Convert all, then download each image, or all of them in one .zip.