JPG to WebP: why and how
WebP is a modern image format from Google that compresses photos more efficiently than JPG — usually 25–35% smaller at the
same visual quality. Converting decodes your JPG to raw pixels and re-encodes them as WebP at the quality you choose, all on
a <canvas> in your browser. Nothing is uploaded.
When to use WebP
- Website images — smaller files mean faster pages and better Core Web Vitals.
- Anywhere modern — every current browser supports WebP.
Sending to someone on older software instead? Keep JPG, or convert the other way with WebP to JPG.
Frequently asked
Are my JPGs uploaded anywhere?
No. The conversion runs on a canvas inside your browser tab. Nothing is sent to a server, and it works with Wi-Fi off after the page loads.
Why convert JPG to WebP?
WebP is typically 25–35% smaller than JPG at the same visual quality, which makes web pages load faster. Every modern browser supports it.
Will I lose quality?
WebP is lossy below 100%, like JPG. At 80% most people can't tell the difference, and the file is meaningfully smaller.
Does it work on iPhone and Android?
Yes. It runs in mobile Safari, Chrome, and Firefox, and the conversion happens on the phone itself.