image converters
Convert JPG to WebP online — free & private
The easiest way to compress a JPG is to convert it to WebP: WebP is typically 25–35% smaller than JPG at the same visible quality. Optimal Convert re-encodes your photo in the browser tab, so nothing is uploaded — free, unlimited and private.
How to convert JPG to WebP
Add your jpg file
Drag it into the converter box above, or click to browse. The file never leaves your device.
Output is set to WebP
The dropdown is preconfigured to WebP — switch it any time.
Download your WebP file
The conversion runs in your tab and the result saves to your device. Nothing is uploaded or stored.
Frequently asked questions
Is JPG to WebP really free?
Yes — free and unlimited. No sign-up, no watermarks, no daily caps, no file-size limits. Convert as many files as you like.
Are my files uploaded anywhere?
No. Conversion runs entirely in your browser tab — there is no upload endpoint, so your file’s bytes never leave your device. You can even convert offline after the first load.
Can I convert sensitive or work documents?
Yes. Because nothing is uploaded, private files stay private. That makes Optimal Convert suitable for GDPR- and HIPAA-sensitive workflows without a data-processing agreement.
Will converting JPG to WebP lose quality?
PNG is lossless; JPG and WebP re-compress the decoded pixels. Optimal Convert encodes WebP at 92% quality by default, which is visually lossless for most images, and you can raise or lower it from the converter.
Related guide
Read the plain-English explainer before you convert — the trade-offs are worth a minute.
Sources
Related conversions
Other format converters
Private by design
This page runs entirely in your browser. Files are read, converted and saved on your own device using WebAssembly and the browser’s native codecs — nothing is uploaded, there is no account, and your bytes never leave your machine. Not even we can see them.