WebP Converter

WebP is the web’s efficient image format: the same photo in roughly a quarter to a third fewer bytes than JPG, with transparency like PNG. But plenty of apps, editors and upload forms still reject it. This converter works in both directions — JPG, PNG, GIF, BMP or HEIC to WebP for faster websites, and WebP back to JPG or PNG when something will not open it — in batches, inside your browser.

How to use this tool

1. Choose your images. Mixed formats in one batch are fine.
2. Pick the target: WebP, or JPG or PNG to convert WebP files back.
3. For WebP choose a quality (80 is the default) or tick lossless for graphics and screenshots; for JPG pick a background for transparent areas.
4. Optionally set a max width, then download the files and check the size change.

Formula

Size change = (new bytes ÷ original bytes − 1) × 100%

Lossy WebP uses VP8 block prediction with a deblocking filter; lossless WebP (VP8L) stores every pixel exactly and typically beats PNG by about a quarter. The tool reads the RIFF chunks of each file it makes to report which kind you got. Animated WebP and GIF inputs are converted from their first frame. Chrome, Edge and Firefox can encode WebP; Safari can open WebP but not save it.

Example

A 2000 × 1333 px JPG of 820 KB converted at quality 80 typically becomes a WebP of about 350–450 KB, a size change of roughly −50%. Going the other way, a 160 KB WebP saved as JPG at 80% is usually 200–300 KB, because JPG compresses less efficiently.