How it works
- Drop your JPG files here, or select a whole folder.
- Each JPG is decoded and re-encoded as WebP — right in your browser.
- Adjust the quality slider to balance file size against fidelity.
- Download the WebP files individually, or as one ZIP.
If a PageSpeed report is telling you to "serve images in next-gen formats," JPG (JPEG) to WebP is usually the fix — WebP typically shrinks a photo by 25-35% at the same visual quality, which adds up fast across a whole site. This tool re-encodes JPG to WebP entirely in your browser: drop in a folder of product photos or blog images and none of it has to travel to a server first. Like any lossy-to-lossy conversion, this re-encodes the pixels rather than copying them — at the default quality setting the result is visually identical, and the quality slider is yours to tune.
Why use convert.pics?
- Smaller pages: WebP typically cuts file size well below the equivalent JPG.
- No upload: bulk conversion for an entire site's images runs locally, nothing sent.
- Batch conversion: convert hundreds of images in one pass, ready to deploy.
- Quality slider gives full control over the size-versus-fidelity tradeoff.
Frequently asked questions
How much smaller is WebP than JPG?
At the same visual quality, WebP typically runs 25-35% smaller than JPG, based on Google's own published comparisons. The exact number depends on the image — photos with lots of fine detail compress less dramatically than smoother images.
Do all browsers support WebP now?
Yes — every major browser (Chrome, Firefox, Safari, Edge) has supported WebP since 2020 or earlier. It's safe to use as a primary format for the web today, with a JPG fallback only needed for very old software, not browsers.
Does converting JPG to WebP lose quality?
Yes, technically — this is a lossy-to-lossy re-encode, so the pixels are recompressed rather than copied. At the default quality the difference is not visible, but it is a real re-encode, not a lossless transfer.
What quality setting should I use for WebP?
The default (82) is a solid starting point for most photos — visually identical to the source with a meaningfully smaller file. Drop it toward 70-75 for thumbnails or background images where file size matters more than fine detail.
Can I convert hundreds of images at once?
Yes, drop in as many JPGs as your browser can hold in memory at once — typically hundreds — and download them all together as a single ZIP when done.