JPG to WebP — Save 25-35% File Size on Photos
JPG has been the standard for photos on the web for decades, but WebP has quietly made it obsolete for most web delivery use cases. You get 25–35% smaller files at equivalent visual quality — and this converter does it in your browser with no upload required.
Try JPG to WebP Converter free →
The problem
JPG is the default format that comes out of cameras, phones, and most stock photo sites. It compresses well for photos, and every device on earth can open it. But WebP compresses 25–35% better at the same perceptual quality level, according to Google's own benchmarks.
If you're running an e-commerce site with 50 product photos, switching to WebP can shave hundreds of kilobytes off every page load. That means faster LCP scores, lower bandwidth costs, and a better experience for users on slow connections. The friction has always been conversion — most tools require an upload, or installing something, or both.
How it works
- Drop your JPG onto the converter or click to browse and select it.
- Adjust the quality slider. JPG-sourced images rarely need above 85 in WebP — the compression algorithm handles photos very efficiently.
- The original and converted file sizes are shown so you can confirm the savings before downloading.
- Click download. The WebP file is generated entirely in your browser using the Canvas API — no server ever touches your photo.
Why I built it
I optimized a client's portfolio site and the single biggest win was converting their JPG gallery to WebP. Median image load time dropped by nearly a third. After that I needed a reliable, private converter I could use every time without thinking about it. Building my own took less time than finding a trustworthy third-party tool, so here we are.
JPG vs WebP: format comparison
| Feature | JPG | WebP |
|---|---|---|
| Lossy compression | Yes | Yes |
| Lossless compression | No | Yes |
| Transparency (alpha) | No | Yes |
| Animation | No | Yes |
| Typical file size savings | Baseline | 25–35% smaller |
| Browser support | Universal | Universal (all modern browsers) |
| Best use case | Legacy compatibility, print | Web photos, web delivery |
For web use, WebP wins on every measurable axis except legacy support — and at 97%+ browser coverage, the legacy concern is essentially gone for most audiences. The only reason to keep JPG as your delivery format is compatibility with systems outside the browser (email, some CMS platforms, print).
Built with vanilla HTML/JS. No frameworks, no backend, loads instantly.