Select a PNG image, choose your quality level (such as 85% for balanced size or 100% for maximum fidelity), and convert it to WebP right in your browser. Alpha transparency is preserved and metadata is stripped automatically.
Why convert PNG to WebP locally?
WebP supports both lossy and lossless compression with an 8-bit alpha transparency channel, typically shrinking PNG UI assets, logos, and screenshots by 45%–80% without uploading confidential designs to a third-party conversion server.
| Feature | PNG | WebP |
|---|---|---|
| Alpha Transparency | Full 8-bit transparent backgrounds | Supported by both PNG and WebP |
| Typical File Size | Large lossless deflate streams | 25%–80% smaller in WebP |
| Browser & iOS Support | Universal across Safari, iOS 14+, Chrome, Firefox, Edge | Native support everywhere in 2026 |
PNG vs. WebP: Which format should you use?
PNG has been the default format for screenshots, transparent graphics, and UI mockups for decades, but its compression algorithm produces heavy files—especially on high-DPI Retina screenshots.
WebP delivers full alpha-channel transparency alongside modern predictive coding. Converting a 1.4 MB PNG screenshot to WebP at 85% quality typically yields a 180 KB–250 KB file that loads instantaneously on the web.
- Select or drop a PNG (or JPEG) file into the converter above.
- Adjust the WebP quality slider (85% is ideal for most graphics and screenshots).
- Review the exact byte savings and download your `.webp` file.
Frequently asked questions
01Does converting PNG to WebP keep transparent backgrounds?+
Yes. Our browser converter preserves the alpha channel so transparent logos, icons, and cutouts stay transparent in the output WebP file.
02Are my confidential UI mockups or screenshots uploaded anywhere?+
No. Conversion runs inside your browser's local Canvas encoder with zero network requests.
