Free PNG to WebP Converter
This free tool converts PNG images to WebP in your browser, usually cutting the file size by half or more while keeping transparency and the original pixel dimensions.
Drop images here
PNG files — add as many as you like
Runs entirely in your browser. Your images are never uploaded to a server.
How it works
- Drop a PNG onto the box above, or click to choose one from your device.
- The WebP version is created immediately, and the panel shows the original size, the new size, and the percentage difference.
- Adjust the quality slider if you want a smaller file. 85 is a good balance for most images.
- Click Download WebP.
Common use cases
- Shrinking product photos so a Shopify or WooCommerce store loads faster.
- Cutting page weight to improve Largest Contentful Paint on a slow page.
- Replacing heavy PNG screenshots in documentation or a knowledge base.
- Reducing image payload on a site where hosting bandwidth is metered.
- Preparing images for an email or CMS with a strict upload size limit.
Frequently asked questions
- Does converting PNG to WebP keep transparency?
- Yes. WebP supports an alpha channel, so transparent areas stay transparent. This is the main reason WebP is a better replacement for PNG than JPG is.
- How much smaller will my file be?
- It varies with the image, but a 25 to 80 percent reduction is typical, and photographs tend to compress more than flat graphics. The tool shows you the exact figure for your file rather than making you guess.
- Is WebP lossy or lossless?
- WebP supports both. This tool uses lossy encoding with an adjustable quality slider, because that is where the large file size savings come from. At quality 85 the difference is usually invisible at normal viewing size.
- Do all browsers support WebP?
- Yes. Every current browser supports WebP, including Chrome, Firefox, Safari, and Edge. Support has been effectively universal since 2020, so it is safe to use on a public website.
- Will this change my image dimensions?
- No. The width and height in pixels stay exactly the same. Only the file format and file size change. If you also need to change dimensions, use the image resizer.
- Is my image uploaded to a server?
- No. The conversion happens entirely in your own browser using the Canvas API. The file never leaves your device, and nothing is stored.