About this tool
Switching PNG images to WebP typically cuts file size by 25-35% at the same visual quality, and by far more when you allow lossy compression. Smaller images mean faster pages and better Core Web Vitals scores, which is why WebP is the default recommendation for web images.
About the formats: PNG (Portable Network Graphics) is a lossless image format with full transparency support. It is the standard choice for screenshots, logos, icons, and anything with sharp edges or text, but it produces much larger files than JPG or WebP for photographs. WebP is Google's modern web image format. It supports both lossy and lossless compression plus transparency, and typically comes out 25-35% smaller than an equivalent JPG or PNG. Every current browser displays it, but some older desktop apps and upload forms still reject it.
PNG and WebP, side by side
| .png in | .webp out | |
|---|---|---|
| Compression | Lossless | Lossy or lossless |
| Transparency | Yes | Yes |
| Animation | No (APNG aside) | Yes |
| Opens on | Everything | Browsers, current OSes; older apps no |
Rows where the two differ are marked. The full story on each: PNG files and WebP files.
How to use it
- Drop your PNG files into the box above, or click to browse. Nothing is uploaded.
- Adjust the options if you want; the defaults suit most files.
- Click Convert to WEBP and wait a moment.
- Download the results individually or all at once as a ZIP.
Questions
Is transparency kept when converting PNG to WebP?
Yes. WebP fully supports alpha transparency, so logos and icons convert cleanly.
What quality setting should I use for web images?
80-85 is the sweet spot for photos. For graphics with flat colors, use 95-100 to avoid faint blurring.
Is it free, are files uploaded, which browsers work: the general questions are answered once for the whole site.