Convert JPG to WebP
Free online JPG to WebP converter. Drag and drop files, convert in batch, and download, without ever uploading to a server.
Why convert JPG to WebP?
Lossy WebP is typically 25-34% smaller than JPG at similar visual quality, per Google's own WebP compression study (developers.google.com/speed/webp/docs/webp_study). Converting JPG to WebP usually improves web performance.
Tips
- Browser support for WebP is now universal across all modern browsers.
- For an even bigger size reduction, convert to AVIF when your audience is on modern browsers.
Where the size savings come from
WebP's lossy mode is built on a newer prediction and compression scheme than JPG's, which dates to the early 1990s. In practice WebP can predict a block of pixels from its neighbors more accurately before encoding the difference, so it needs fewer bytes to describe the same visual result. The saving isn't uniform across every photo. Images with lots of fine, random texture (grass, fabric, static-heavy patterns) compress less dramatically than smooth photos with gradients and soft focus areas, where WebP's advantage over JPG is largest.
Frequently asked questions
How do I convert JPG to WebP?
Drop your JPG file into the converter above, adjust the quality if needed, and click "Convert to WebP". The conversion happens entirely in your browser. Your file is never uploaded to any server.
Is the JPG to WebP conversion lossless?
WebP is a lossy format. Quality is controllable from 1-100% (default 92%); at recommended settings the result is visually close to the source for most photos.
Is there a file size limit?
The tool can handle files up to about 20 MB per image. Since processing happens in your browser, the practical limit is your device's available memory. Most modern devices can comfortably batch-convert dozens of images at once.
Are my JPG files uploaded to your servers?
No. All JPG to WebP conversion happens entirely client-side. Conversion uses the Canvas API. Your files never leave your browser.
Do I need to keep the JPG version once I've converted to WebP?
For a website, yes, if you want compatibility with tools and scripts that still expect .jpg, or if you use an image CDN that serves whichever format the visitor's browser supports. That CDN pattern is usually better than converting everything once and discarding the original. For personal use where you just need one working copy, WebP alone is fine today given how widely it's supported. The safer long-term habit is keeping your original photo (ideally before any lossy compression) as the master file, and generating JPG or WebP derivatives from that whenever you need them.