Why WebP for your website
Google says lossy WebP files are 25 to 34% smaller than comparable JPG files. Smaller images load faster, especially on phones, and Google lists Chrome, Safari, Firefox, Edge and Opera as browsers that show WebP.
- Set the maximum width to the widest size your page shows, for example the width of your content area.
- Start at 80% quality, compare the result with the original and go lower only while it still looks good.
- Keep the original JPG files, so you can make new versions later.
For ads keep JPG or PNG, because those are the file types Meta and Google Ads list for image ads. You will find the limits in Ad specs.
FAQ
Do all browsers show WebP?
Google lists Chrome, Safari, Firefox, Edge and Opera as browsers that support WebP. If your audience uses very old devices, keep a JPG version as well.
Why does the tool say my browser cannot save WebP?
Saving WebP depends on the browser. If yours cannot do it, the tool tells you right away. Try a recent version of Chrome, Edge or Firefox.
Are my photos uploaded anywhere?
No. Your files never leave your device. The browser converts them in this tab, and the location and camera data is removed from the new files.
Source: Google WebP documentation. Checked in October 2026.