Your file stays private. This page processes the image inside your browser. It does not upload the file to our server.
How to use this page
- Choose a JPG image.
- Set WebP quality (around 80 is a reasonable first look).
- Convert, compare the preview and the new file size, then download.
Worked example: a 1.8 MB JPG hero that should be a WebP
Resize the JPG to the hero width first, then convert to WebP at quality 75–85. Check the byte size. If a CMS still wants JPG, skip WebP and compress the resized JPG instead.
What this job is for
Keep the JPG (or the camera original) as the archive. If you need to edit later, edit the master and export a fresh WebP.
Useful limits
WebP is not an excuse to skip resizing. A 6000-pixel WebP is still a large download.
The live tool behind this page is JPG to WebP. It is the same local engine as the rest of Image Cosmos.
Frequently asked questions
Will every browser show WebP?
Current major browsers do. Ancient software may not — keep a JPG fallback if you support it.
Is WebP always smaller than JPG?
Often, not always. Compare the actual download size.
Is the JPG uploaded?
No.
Related Image Cosmos pages
How to Compress an ImageHow to Resize an ImageHow to Crop an ImageHow to Convert JPG to PNGHow to Convert PNG to JPGJPG to WebP