JPG to WebP Converter
Shrink your JPEGs by converting them to modern WebP. Drop in a batch, dial in the quality, and download
each .webp or everything as a ZIP.
Everything is processed in your browser — nothing is uploaded.
How it works
JPEG has carried the web's photography for thirty years, but its compression is showing its age. WebP, developed by Google, uses more modern techniques — better prediction between neighboring pixels, a more efficient entropy coder — to pack the same visual quality into 25–35% fewer bytes. For a photo-heavy page, that difference is directly measurable in load time, bandwidth bills and mobile data usage.
This converter takes your .jpg/.jpeg files, decodes them with your browser's
native JPEG decoder, and re-encodes each one as WebP at the quality you choose. Drop files onto the upload
area (or click to browse), move the quality slider — lower for thumbnails and previews, higher for hero
images — and press Convert. Finished files download individually, or all at once as a ZIP.
A note on quality, honestly given: this is a lossy-to-lossy conversion. Your JPEG already discarded detail when it was first compressed, and WebP encoding discards a little more. At sensible quality settings (85–95%) the result is visually indistinguishable from the source JPEG, but you should keep the original JPEG as your master and treat the WebP as a delivery copy. Never convert a WebP back to JPG and forward again in a loop — each generation costs detail you can't get back.
Browser support is effectively a solved problem: every current browser — Chrome, Edge, Firefox, Safari,
mobile Safari, Opera — renders WebP natively. The only gap is truly ancient browsers, and the standard fix
is the HTML <picture> element serving WebP with a JPEG fallback, which our
WebP/AVIF optimizer generates for you automatically, including ready-to-paste
markup. One more consideration: WebP also supports transparency and animation, but a converted JPEG has
neither to carry over — those features only matter when converting from formats like PNG.
Frequently asked questions
How much smaller is WebP compared to JPG?
For photographic content at equivalent visual quality, WebP files are typically 25–35% smaller than JPEG. The savings are largest on detailed photos and smallest on images that were already heavily compressed.
Do all browsers support WebP now?
Yes — all current versions of Chrome, Edge, Firefox, Safari, Opera and mobile browsers display WebP. Only very old browsers (roughly pre-2020) lack support, which is why the <picture> element with a JPG fallback is still a good idea for public websites.
Will converting JPG to WebP lose quality?
WebP encoding here is lossy, so re-compressing a JPEG discards a little more detail. At the default 92% quality the change is imperceptible. Avoid converting back and forth between lossy formats repeatedly.
Can I use WebP images everywhere I used JPG?
Almost. The web is fully covered, and most modern design tools, CMSs and social networks accept WebP. Some print workflows, older desktop apps and strict upload forms still demand JPG — convert back with our WebP to JPG tool when needed.
Are my images uploaded during conversion?
No. Your JPEGs are decoded and re-encoded as WebP entirely inside your browser. Everything is processed in your browser — nothing is uploaded to any server.