ImageConvert
Menu

Convert PNG to WebP

Replace heavy PNG files with WebP while keeping transparent backgrounds. Done locally in your browser.

  • Files never leave your device
  • No signup, no watermark
  • Batch convert, download as ZIP

Image converter

or drop them here

PNG. Up to 50 files at a time. Files stay on your device.

How to convert PNG to WebP

  1. Add your PNG images by choosing them or dropping them onto the page.
  2. Conversion to WebP starts straight away. Open Settings if you want to change quality, size.
  3. Download each file, or use Download all to get a ZIP.

Why convert PNG to WebP

PNG files for web graphics tend to be large. WebP can store the same transparent image in a fraction of the space, which helps page speed.

What happens to your image

  • The PNG is encoded as lossy WebP at your chosen quality, and the alpha channel is kept.
  • Lossy compression can slightly soften very fine detail and sharp text. Raise the quality for UI screenshots.
  • Animated PNG converts as a still image of the first frame.
  • Browsers without native WebP encoding use a built-in WebAssembly encoder.

About PNG and WebP

PNG

PNG is a lossless format: pixels are stored exactly, so it never adds compression artifacts. It supports full alpha transparency.

  • Photographs produce very large files
  • Converting a lossy file to PNG does not bring back detail that is already gone

WebP

WebP is a format from Google that offers lossy and lossless compression, transparency and animation in one container.

  • Often smaller than JPEG or PNG at similar visual quality
  • Supports transparency in both lossy and lossless modes
  • Displayed by current versions of all major browsers

Tips

  • Try quality 80 for photos and 90 or more for graphics with text.
  • Keep the PNG as your master copy if you might need pixel-perfect output later.

Frequently asked questions

Does PNG to WebP keep transparency?

Yes. WebP supports an alpha channel, and it is written to the output.

Is the result lossless?

This tool writes lossy WebP so files are small. Expect a slight, usually invisible, loss of detail.

Will older browsers display the WebP?

Current versions of all major browsers do. For very old browsers, keep a PNG or JPG fallback.

Limits to know about

Conversion happens in your browser's memory, so very large images or very large batches can fail on devices with little memory. If that happens you will see a clear message, and you can retry with fewer files or the resize option.