PNG to WebP Converter
Convert PNG images to WebP right in your browser. Set the quality, see the size saved, and download. WebP keeps transparency, and your images are never uploaded.
About the PNG to WebP Converter
The PNG to WebP Converter turns a PNG image into the WebP format right in your browser. WebP files are usually much smaller than PNG at the same visual quality, and transparency is preserved, so they are a good fit for faster-loading websites and WordPress media. The tool also accepts JPEG and other image types if you need them. Everything runs locally with the Canvas API, so your images are never uploaded.
How it works
- Drop a PNG onto the box or click to pick one from your device.
- Set the quality slider; 80% is a good balance of size and detail.
- The tool re-encodes the image to WebP and shows the original size, the WebP size, and the percent saved next to a preview.
- Click Download .webp to save the converted file.
Features
- Drag and drop or file picker, with support for PNG, JPEG, and other image types.
- Quality slider so you control the size and detail trade-off.
- Transparency is kept, since WebP supports an alpha channel like PNG.
- Live size comparison: original size, WebP size, and percent saved.
- Runs fully in the browser with no uploads and no external libraries.
Frequently asked questions
Are my images uploaded to a server?
No. The image is decoded and re-encoded entirely in your browser with the native Canvas API. Nothing is sent or stored anywhere.
Does WebP keep PNG transparency?
Yes. WebP supports an alpha channel, so transparent areas in your PNG stay transparent in the converted file.
Why is the WebP smaller than my PNG?
WebP uses more efficient compression than PNG, so it can store the same image in fewer bytes. The savings are largest on photos and detailed images; flat graphics with few colors may shrink less.
What does the quality slider do?
It controls how much detail WebP keeps when compressing. Higher values look closer to the original but produce larger files. Lower values save more space at the cost of some detail. 80% works well for most images.
Can I convert a JPEG or other image to WebP?
Yes. The picker is set to PNG by default, but you can drop or select JPEG and most other image types and convert them to WebP the same way.