Convert JPG to WebP
Drop your JPG photos and download WebP copies that are typically 25–35% smaller at the same visual quality. Encoded entirely in your browser via Canvas.
How to convert JPG to WebP
- Drop your JPG files into the box.
- Each picture is decoded by the browser and a Canvas exports a WebP copy.
- Download the WebP files.
Why convert JPG to WebP?
WebP is the safest modern image format for the web today. Every major browser supports it, every modern CMS understands it, and the bandwidth savings on a photo-heavy site are immediate. A 250 KB JPG hero image often drops to 170 KB as WebP without anyone noticing. This converter is best for one-off batches: marketing pages, landing assets, product shots that you want to upload to your platform in a smaller form. For continuous publishing, integrate WebP generation into your build pipeline so every uploaded JPG is automatically given a WebP sibling. If your audience is overwhelmingly modern Chrome, Edge or Safari, consider AVIF instead — it shrinks files 30–50% on top of WebP.
How we compare
The closest peer to this tool is Google's Squoosh, which also runs fully in your browser. Squoosh focuses on compression for the modern web and does not handle HEIC or batch conversion. Cloudconvert and Convertio cover more formats but upload your files to their servers and meter usage.
| This site | Squoosh | Cloudconvert | Convertio | |
|---|---|---|---|---|
| Files stay on your device | ||||
| No signup | Limited | Limited | ||
| No ads | ||||
| Batch conversion | ||||
| Supports HEIC | ||||
| Open source | AGPL-3.0 | Apache-2.0 |
Frequently asked questions
Are files uploaded?+
No. Both the decode and encode happen in your browser.
How much will I save?+
Typically 25–35% smaller files at the same visible quality.
Should I keep the JPG?+
Yes. WebP is a one-way lossy conversion; keep the original for future re-exports.
Does WebP work on iPhone?+
Yes since iOS 14. WebP is now safe everywhere.
Is encoding slow?+
No. WebP encoding is fast — usually a few hundred milliseconds per image.
Should I switch to AVIF instead?+
If your audience runs only modern browsers and you can ship a JPG fallback, AVIF saves an additional 30%. WebP remains the safer default.
Related converters
Files processed in your browser. We never see them.