Convert many images at once
Select all the images in a folder with Ctrl+A (Cmd+A on a Mac), then drag them on the box. You can add up to 100 files in one session, and you can keep adding more files to the same list. All files use the same settings, and the results update when you change one.
What you get
- A total saving for the whole batch: files, size before, size after and the percent saved.
- One ZIP with every converted file, with unique names if two files shared a name.
- A file name suffix, such as -min or -web, to separate the new files from the originals.
- Original kept for any image that would get bigger as WebP, so a batch never makes a file worse.
Tips for large batches
- Work in groups of 30 to 50 photos if they are large, such as 20 MP camera files. The browser has to decode each one, so memory use grows with size.
- Limit the longest side to 2560 or 1920 pixels. This is the biggest saving for photos that are only shown on a page.
- Test the quality on three or four typical images before you convert the whole folder.
- Keep the originals. A WebP made from a WebP loses quality again.
A simple workflow for a website
Convert the folder, unzip the result next to the originals, update the image links or serve WebP with a fallback, and compare page speed before and after. The JPG vs WebP guide has the HTML for a fallback.
For a single image or a quick test, use the JPG to WebP converter. To hit a file size limit on each image, use target size conversion. To turn WebP files back into JPG, use WebP to JPG, or bulk WebP to JPG for a folder. You can also reduce dimensions in bulk with the image resizer, or compress without changing the format using the image compressor.