Free JPG to WebP Converter
Convert JPEG images to WebP format — smaller file size, same visual quality. No upload required.
JPG to WebP conversion reduces image file size by 25-35% at equivalent visual quality, making images faster to load on websites and apps. All major browsers support WebP natively. Convert your JPGs to WebP for web use directly in your browser — no upload, no account, multiple files supported.
Click to select or drag & drop JPG/JPEG files here
JPG supported · Multiple files · No size limitHow it works
Select your JPGs
Photographs benefit most from what WebP does.
Re-encoded as WebP
Typically 25 to 35 per cent smaller at visually equivalent quality.
Download the WebP files
Supported by every current browser, though not by all older software.
Why Convert JPG to WebP?
Browser support is complete, but software support is not. Every current browser reads WebP, including Safari since version 14. Outside the browser the picture is patchier: some older Windows applications, a few email clients and a number of print workflows still reject it. WebP is the right choice for a website and the wrong one for a file you are sending to a print shop.
How WebP Achieves Smaller Files
WebP's lossy mode is derived from the VP8 video codec's intra-frame coding. Where JPEG works only with an 8×8 discrete cosine transform, WebP predicts each block from its already-decoded neighbours — extrapolating from the pixels above and to the left — and stores only the difference between prediction and reality. Because neighbouring regions of a photograph are highly correlated, that residual is much smaller than the original data, which is where the typical 25–35% saving over JPEG at matched quality comes from.
WebP also uses arithmetic-style entropy coding rather than JPEG's Huffman tables, squeezing more out of the same residuals, and supports an alpha channel — so unlike JPEG it can carry transparency, and unlike PNG it can do so with lossy compression.
The conversion here is a re-encode, and that has a consequence worth understanding. Your source JPEG has already discarded detail; encoding it as WebP discards a little more, applied to an already-imperfect image. The result usually still looks fine, because the losses target different characteristics, but converting a low-quality JPEG to WebP will not clean it up. For best results, encode WebP from the highest-quality original you have rather than from a JPEG that has already been through several generations.