JPEG and JPG are the same format
The two names come from the same standard, the Joint Photographic Experts Group. Older systems limited file extensions to three letters, so .jpeg became .jpg. Files can also end in .jpe or .jfif. They all hold the same kind of image, and this converter reads all of them and writes a .webp file.
Quality presets
- Small (60): for thumbnails and background images, where the file size matters most.
- Web (80): the balanced choice for photos in articles and shops.
- High (90): for pictures that people will look at closely.
You can also drag the slider to any value between 1 and 100. The result updates by itself.
Keep the original when WebP is not smaller
An already well compressed JPEG, for example one that went through an optimizer, can come out larger as WebP at a high quality. With the option on, the tool detects this and gives you your original file back instead of a bigger WebP. The result is marked, so you know which files were converted.
Checklist before you replace images on a site
- Keep your original JPEGs in a separate folder.
- Use the same file names, so only the extension changes.
- Serve WebP with a JPEG fallback if you must support very old browsers, as shown in the JPG vs WebP guide.
- Check the biggest images on the page first, because they give the largest speed gain.
The default tool is the JPG to WebP converter. If an upload form asks for a maximum file size, convert to a target size. For many files at once, see bulk JPG to WebP. You can also convert WebP back to JPEG, shrink dimensions with the image resizer or compress JPEGs without changing the format in the image compressor.