Convert PNG to WebP Online
Shrink PNG images by converting to WebP — perfect for web performance.
PNG files are losslessly compressed, which is great for quality but produces large file sizes. Converting PNG images to WebP can reduce file sizes by 25–35% while maintaining visual quality, significantly improving website performance, Google PageSpeed scores, and Core Web Vitals.
Format Comparison
| Feature | PNG | WebP |
|---|---|---|
| File Size | Large (lossless compression) | Small (25-35% smaller) |
| Transparency | Full alpha channel | Full alpha channel |
| Browser Support | Universal | All modern browsers (Chrome, Firefox, Safari, Edge) |
| Best Use | Lossless preservation, source files | Web delivery, page performance |
How to Convert
1
Upload your PNG image to the converter.
2
Optionally adjust the output dimensions.
3
Click Convert to create the WebP file.
4
Download and use the WebP in your website or app.
Frequently Asked Questions
Does WebP support transparency?
Yes. WebP supports full 8-bit alpha channel transparency, just like PNG. Transparent PNGs will have their transparency preserved after conversion.
Will converting PNG to WebP reduce quality?
At the default settings, we use a near-lossless mode that preserves virtually all visual detail while reducing file size. You can also use lossless WebP conversion for pixel-perfect output.
Is my image uploaded?
No. The conversion runs entirely in your browser using WebAssembly. Your files never leave your device.
Should I use WebP or PNG on my website?
For web delivery to end users, WebP is better — it's smaller and faster. Keep the original PNG as your source file. Use WebP for the web-optimized version.
Processed entirely on your device for absolute privacy.