Convert JPG to WebP
Settings
80% is a good balance: a sharp image and a light file.
Converted in your browser: your images are never uploaded.
How to use this calculator?
1. Set the quality: 80% suits most photos
2. Drag and drop one or more JPG images, or click to choose them
3. Check the preview and the size saved for each WebP
4. Download the WebP files one by one, or all at once in a ZIP
Quick answer
How do you convert a JPG to WebP?
Pick a quality (80% by default), drop your JPG into the converter, then download the WebP. Example: a 400 KB product.jpg photo becomes product.webp of about 260 to 300 KB, with no visible difference. The conversion runs in your browser, with nothing uploaded to a server.
| JPG | WebP | |
|---|---|---|
| Size at equal quality | Baseline | 25 to 35% smaller |
| Transparency | No | Yes |
| Browsers | All | All recent browsers |
| Software and printing | Everywhere | Sometimes not recognized |
About the JPG to WebP Converter
What is it?
The JPG to WebP converter turns your JPG photos into WebP images, the format Google created for the web. You set the quality, convert up to 20 images at once and see right away how much size you save on each file.
Why use it?
At the same visual quality, a WebP is usually 25 to 35% smaller than a JPG. Lighter images mean a site that loads faster, especially on mobile, a better PageSpeed score and less bandwidth. Every recent browser (Chrome, Edge, Firefox, Safari since 2020) displays WebP.
How does it work?
Each photo is decoded in your browser, then re-encoded as WebP at the chosen quality (80% by default, a setting that stays invisible to the eye on most photos). The pixel dimensions do not change. Nothing is uploaded to a server: your images stay on your device.
Usage tips
- Between 75 and 85% quality, the difference from the original JPG is almost impossible to see
- Always start from the best quality JPG: re-encoding an image that is already heavily compressed adds artifacts
- Also resize your photos to the size actually shown on the site, it is often the biggest saving
- Keep a copy of the original JPGs: some older software and print services do not open WebP
- WordPress accepts WebP uploads in the media library since version 5.8