Convert JPG to WebP
Convert JPG photos to modern WebP for smaller files and faster pages — with optional resizing and quality control. Everything runs in your browser.
- Private — no upload
- No signup
- Free & unlimited
To convert JPG to WebP online, drop in your JPG and download it as WebP. WebP files are typically 25–35% smaller at the same quality, and the conversion happens entirely in your browser.
How to convert a JPG to WebP
- Drop your JPG. Add a JPG/JPEG image, or click to browse.
- Choose quality. Optionally resize or set a quality level / target size.
- Download WebP. Download the smaller WebP file instantly.
What WebP actually buys you
WebP is a modern image format designed for the web. At matched visual quality it produces files roughly 25–35% smaller than JPG, because it uses more efficient compression than a format designed in 1992.
On a page carrying a dozen photographs that difference is the gap between a fast page and a sluggish one. Since page speed feeds into both search ranking and how many visitors stay, it is one of the cheapest performance wins available.
Browser support
WebP is supported by every current browser, and has been for years. It is safe to use as your only format unless you must support genuinely ancient software.
| Browser | WebP supported since |
|---|---|
| Chrome / Edge | 2010 / 2018 |
| Firefox | 2019 |
| Safari (macOS and iOS) | 2020 |
| Internet Explorer | Never — no longer supported by Microsoft |
When to keep the JPG
- The file is going somewhere outside a browser — some desktop photo software, print workflows and older phone galleries still expect JPG.
- You are emailing it to someone whose software you do not control.
- It is being uploaded to a form that explicitly asks for JPG or JPEG.
- The image is already small enough that 30% of very little is not worth the extra step.
Converting to WebP is lossy, so export from your original file rather than from an already-compressed JPG where you can.
Why use ResizeMate
Private
Images are processed in your browser and never uploaded to a server.
Fast
No upload/download round-trip — results are instant on your device.
Free
No signup, no watermark, no limits.
Frequently asked questions
- Why convert JPG to WebP?
- WebP usually produces 25–35% smaller files than JPG at similar quality, which speeds up websites and saves bandwidth.
- Is WebP supported everywhere?
- WebP is supported by all modern browsers (Chrome, Edge, Firefox, Safari).
- Are my images uploaded?
- No — conversion runs entirely in your browser; files never leave your device.