Free JPG to WebP Converter - Optimize for Core Web Vitals
Make Your JPGs 30% Smaller for the Web
If your website uses JPG photos, switching to WebP is the single highest-impact thing you can do for page speed. A WebP file is typically 25–35% smaller than the same JPG at the same visual quality. Google PageSpeed, Core Web Vitals, and Lighthouse all reward it. ImageXpo converts your JPGs to WebP in your browser — no upload, no account, no plugins needed.
Does It Look Worse?
Not in practice. WebP and JPG are both lossy formats, but WebP's compression algorithm is more efficient — it achieves smaller files while keeping the same visual detail. At a quality setting of 80+, the difference is invisible to the human eye. Use the quality slider to find the right balance for your needs. Most people leave it at 85 and never look back.
Who This Is For
- Web developers and designers — swap out JPG assets before deploying. WebP is supported in all modern browsers and cuts bandwidth significantly.
- E-commerce stores — product photos are usually the heaviest assets on the page. Converting to WebP can cut page weight by 30–50% with no visible quality difference.
- Bloggers and content sites — Google rewards fast-loading pages. WebP images are one of the easiest wins for Core Web Vitals scores.
- Anyone building with Next.js, Astro, or similar — these frameworks serve WebP automatically when available. Prepare your images ahead of time.
Nothing Leaves Your Device
The conversion runs in WebAssembly inside your browser. Your JPG is never uploaded anywhere — it's decoded and re-encoded entirely in local memory. Close the tab and there's no trace left.
Frequently Asked Questions
Why convert JPG to WebP?
WebP files are typically 25–35% smaller than equivalent JPGs at the same visual quality. For websites, that means faster load times, better PageSpeed scores, and lower bandwidth costs. All modern browsers support WebP natively. It's one of the easiest performance wins available, and the conversion takes seconds.
Will my photos look worse as WebP?
At quality 80 and above, the difference is invisible in practice. Both WebP and JPG are lossy formats, but WebP's algorithm is more efficient — it throws away less perceptible detail per byte saved. Set the slider to 85 and compare the output. You won't see a difference, but your file size will drop noticeably.
Is WebP supported everywhere?
Yes, in all modern browsers — Chrome, Firefox, Safari (since 2020), Edge, and all mobile browsers. If you're building for the web, WebP is safe to use without fallbacks. If you need a fallback for very old browsers, you can serve WebP via a picture element with a JPG fallback.
Will my image be uploaded or stored?
No. The entire conversion runs inside your browser using WebAssembly. Your photo is never sent anywhere. When you close the tab, the image is cleared from memory completely. We have no access to your files at any point.