PNG to WebP Converter
Shrink PNG images for your website, shop or blog by converting them to WebP – the format browsers load fastest. Transparency is kept. Works in Chrome, Edge and Firefox.
Your files stay on your device. Conversions run in your browser.
Creating WebP files needs Chrome, Edge or Firefox. Safari can open WebP but cannot create it in the browser.
Your files stay on your device. Conversions run in your browser.
- No signup required
- Files stay on your device
- Browser-based conversion
- Fast download
- Free to use
How it works
How to convert PNG to WebP online
- 1
Add the PNG images you want to publish on the web.
- 2
Choose a quality and click “Convert to WebP”.
- 3
Download the WebP files and upload them to your website or shop.
Supported file types: PNG · No signup required
Why websites use WebP
Large PNG screenshots and graphics slow down web pages, especially on phones. WebP stores the same picture in a fraction of the size, and every current browser can display it. Smaller images mean faster pages, happier visitors and better results in speed tests such as Google PageSpeed.
Unlike JPG, WebP keeps transparent backgrounds, so logos and cut-out product photos still sit cleanly on any background colour.
Choosing the quality
The conversion uses your browser's own WebP encoder. Chrome, Edge and Firefox support it; in Safari you get a clear message instead of a wrong file.
- High: visually the same as the PNG for photos and most graphics.
- Medium: noticeably smaller files; fine for blog images and thumbnails.
- Screenshots with small text: check the result at 100% zoom before publishing.
About PNG and WebP files
- PNG
- PNG is a lossless image format that keeps text and sharp edges crisp. Most screenshots are saved as PNG, and it supports transparent backgrounds.
- WebP
- WebP is a modern image format from Google that makes web images smaller than JPG or PNG. Many websites deliver their pictures as WebP, but some programs and upload forms still don't accept it.
Privacy: your files stay on your device
Your files stay on your device. Conversions run in your browser. PDFConvertFast never uploads, stores or reads your documents – there is no server that receives them, no account and no email address.
- Your files stay on your device
- No signup required
- Browser-based conversion
PNG to WebP – frequently asked questions
How much smaller is WebP than PNG?
It depends on the image. Photos and screenshots saved as PNG usually shrink a lot; simple graphics with few colours may already be small as PNG.
Is transparency kept?
Yes. WebP supports transparent backgrounds, so they stay transparent.
Why doesn't it work in Safari?
Safari can display WebP but can't create WebP images from a web page. Use Chrome, Edge or Firefox for this conversion.
Do all browsers show WebP images?
Yes. All current versions of Chrome, Edge, Firefox and Safari display WebP.
Are my images uploaded?
No. They are converted in your browser and stay on your device.