What it does
The JPEG is decoded locally and exported as WebP through canvas encoding, using the quality setting you choose to balance file size against visual detail.
How to use
- Select a JPG or JPEG file.
- Adjust the quality slider.
- Process the file and download the WebP.
Features
- A quality slider fine-tunes the WebP output.
- Files are often smaller than the original JPEG at a similar visual quality.
- Conversion is private and happens entirely on your device.
Use cases
- Replacing hero images on a website with lighter WebP versions.
- Preparing photos for a Next.js site or another static site generator.
- Reducing attachment size for platforms that accept WebP.
Examples
- photo.jpg at 80% quality becomes a noticeably smaller .webp file.
- A product photo in JPEG converts to WebP for an online catalog.
Common mistakes
- Re-encoding an already-compressed JPEG adds another lossy step, so it's best to start from the highest-quality source available.
- WebP encoding may be unavailable in older browsers that lack canvas support for it.
FAQ
Will this always be smaller?
Usually, yes, but a JPEG that's already heavily compressed may not shrink much further at a high WebP quality setting.
Is data uploaded?
No. The conversion is entirely client-side, with nothing sent to a server.
Conclusion
A modern, lighter WebP version of the same JPEG photo — fast to produce and private by design.
