How to convert PNG to WEBP
- 1Click “Select file” or drag and drop your PNG image(s) into the box above.
- 2Conversion runs instantly in your browser — your files are never uploaded to a server.
- 3Download each WEBP file individually, or grab them all at once as a ZIP.
Why convert PNG to WEBP?
WebP is a modern image format developed by Google that delivers far smaller files than PNG at comparable quality. It supports both lossless and lossy compression as well as transparency, making it a versatile replacement for PNG on the web. Converting PNG to WebP is one of the easiest ways to speed up a website and improve Core Web Vitals scores.
Compared to PNG, WebP files are typically 25–80% smaller, which means faster page loads, lower bandwidth costs, and a better experience for mobile users. Because WebP keeps an alpha channel, transparent logos and graphics convert cleanly without a background fill. Every major modern browser now supports WebP, so it is safe to use across your site.
FreeConvertImg converts your PNG files to WebP locally in your browser, with a quality slider to balance size and sharpness. Nothing is uploaded, conversion is instant, and you can process an entire folder of images at once and download them as a ZIP.
PNG vs WEBP: how they compare
| Feature | PNG | WEBP |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Yes | Yes |
Frequently Asked Questions
Do all browsers support WebP?
Yes. Chrome, Edge, Firefox, Safari and all modern mobile browsers support WebP, so it is safe for production websites.
Does WebP keep transparency?
Yes. WebP supports an alpha channel, so transparent areas in your PNG are preserved in the WebP output.
How much smaller will my files be?
WebP is usually 25–80% smaller than the equivalent PNG, depending on the image and the quality setting you choose.