What is this JPEG to WebP converter?
A free, browser-based tool that converts JPEG images to WebP in batch. Upload one or many images, set a quality level, and download everything as a single ZIP — at the original resolution. All processing happens locally in your browser, so your images are never uploaded.
Cutting page weight from a JPG photo library
Photos are usually the heaviest assets on a page, and most of them still ship as JPG. Re-encoding those JPGs to WebP typically trims 25 to 35% of the bytes at comparable visual quality, and the saving repeats on every product grid, blog header, and gallery view. On image-heavy templates this is often the cheapest improvement available for Largest Contentful Paint and bandwidth bills.
Browser support stopped being an argument years ago: Chrome, Safari, Firefox, and Edge all render WebP, so you can serve it directly without fallback markup. The only holdouts are long-retired browsers such as Internet Explorer, which matter for almost no consumer audience today.
Cases where the JPG original should stay
Keep the JPG for anything that leaves the browser. Email clients are inconsistent with WebP in newsletters, print vendors expect JPG or TIFF, and older CMS, DAM, and marketplace upload forms sometimes filter the extension outright. Note also that a JPG source is already lossy, so this is a second encode: convert once from the best JPG you have, keep that original as the master, and avoid running the output through further lossy conversions. Quality 75 to 85 covers most web photography.
How to use it
- Upload one or more JPEG images on the left (drag & drop or click).
- Adjust the quality slider to balance size and quality.
- Press “Convert & download zip” to get every image as WebP.