Convert JPG to WebP in your browser
Drop a JPG and Tinier converts it to WebP locally with libwebp. For photos, WebP is typically 25–35% smaller than JPG at the same visual quality — which means faster-loading pages and lighter uploads. Nothing leaves your device; disconnect your internet after the page loads and it still works. Up to 50 MB per file, 1 to 20 at a time.
Why convert JPG to WebP for the web?
WebP was designed to replace JPG for photos on the web. At the same perceived quality it produces files 25–35% smaller, and every major browser supports it today. Smaller images mean faster page loads and better Core Web Vitals — the metric Google uses to rank pages. If you publish photos on a site, converting your JPGs to WebP is one of the highest-leverage speed wins available.
Will I lose quality converting JPG to WebP?
At the default quality, the difference is imperceptible — WebP is simply a more efficient encoder for the same visual result. Keep in mind that a JPG is already lossy, so converting doesn't restore detail the JPG lost; it re-encodes what's there more efficiently. Use the advanced quality control to trade a little more sharpness for an even smaller file, and the built-in comparator to see the trade-off with your own eyes.
Why convert in your browser instead of a server?
Tinier runs libwebp compiled to WebAssembly on your device, so the JPG is never uploaded. It is faster than a server tool on files under 10 MB because there is no upload or download round-trip, and it is private by construction. No account, no rate limit, no size paywall.
Frequently asked questions about JPG to WebP
Is my JPG uploaded anywhere?
No. The conversion runs entirely in your browser with WebAssembly. Your JPG never leaves your device — you can turn off your internet after the page loads and it still works.
How much smaller will the WebP be?
For photographic JPGs, WebP is usually 25–35% smaller at matching quality. The exact savings depend on the image; the advanced control lets you push it smaller if you accept slightly lower quality.
Do all browsers support WebP now?
Yes. Chrome, Safari, Firefox and Edge all support WebP today, so the old compatibility objection is gone. WebP is a safe default for images on a modern website.
Can I convert many JPGs at once?
Yes. Drop up to 20 JPGs and download them individually or as a ZIP. Each is processed one after another on your device.
Related conversions
- WebP to JPG — the reverse — turn a WebP back into a universal JPG.
- PNG to WebP — shrink PNGs while keeping transparency.
- Compress JPG — keep JPG but compress it smaller with MozJPEG.