Convert image to WebP online
Choose JPG or PNG files and this image to WebP converter turns them into compact WebP images, ideal for speeding up a website.
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Your files never leave your device. Everything is processed in your browser and nothing is uploaded.
How to use the image to WebP converter
- Press Choose images and pick one or more JPG or PNG files, or drop them onto the box.
- Each image is converted at once, and the list shows the old and new file size.
- Press Download next to each WebP file to save it.
- Add more files with Convert more images, or clear the list to start again.
How the image to WebP converter works
WebP is an image format developed by Google for the web. It supports lossy compression like JPG and transparency like PNG, and at the same visual quality a WebP file is usually noticeably smaller than either.
The converter decodes each image in your browser and asks the browser's own WebP encoder to save it at quality 0.92. Transparent areas in PNG files stay transparent, and your images never leave your device.
Formula
For each file: canvas size = image size; draw the image; export as WebP at quality 0.92.
A browser that can't create WebP files quietly hands back a PNG instead, so the tool checks the result and tells you if that happens rather than giving you the wrong format.
Example
A 900 KB JPG product photo of 2,000 by 2,000 pixels often becomes a WebP of roughly 500 to 700 KB at quality 0.92. On a page that shows 20 such photos, that can save several megabytes for every visitor.
A 300 KB PNG logo with a transparent background might become a WebP of 60 to 150 KB that keeps its transparent background.
Tips and common mistakes
Resize before converting
Web pages rarely need photos wider than about 2,000 pixels. Resize the image first for the biggest savings.
Compare with a compressed JPG
When every kilobyte counts, also run the photo through our image compressor and keep whichever file is smaller.
Keep the original for email
Current browsers display WebP, but some email programs and older software don't. Keep the JPG or PNG for those.
Use clear file names
Converted files keep their original name with a .webp ending, which makes it easy to match them to the originals on your site.
Frequently asked questions
Are my images uploaded?
No. Conversion happens in your browser and your files never leave your device.
Which browsers support WebP?
All current major browsers can display WebP. Creating WebP files with this tool needs a recent Chrome, Edge or Firefox; Safari may not be able to save to WebP.
Is transparency kept?
Yes. Transparent areas in a PNG stay transparent in the WebP file.
Is WebP always smaller?
Usually, but not always. Tiny or already heavily compressed images can come out larger, so compare the sizes shown in the list.
Does the image size in pixels change?
No. The WebP file has exactly the same width and height as the original.