TinySandyFree Online Tools

PNG to WebP Converter

Convert PNG graphics and screenshots to WebP while keeping their transparent backgrounds. WebP files are frequently lighter than the equivalent PNG, which helps pages load faster, and you decide the quality level.

Image Conversion Runs in your browser

Convert Your PNG Image to WebP

Powered by your browser's built-in WebP encoder (canvas). It works in current Chrome, Edge and Firefox; where a browser cannot encode WebP, this page says so rather than saving another format.

Drag and drop PNG images here, or click to browseAccepted: PNG. Up to 30 MB each.
Applies to the colour data; transparency is kept. Higher values give larger files.

How to Use the PNG to WebP

  1. Add your PNG files with drag and drop or the file picker.
  2. Set the WebP quality. 80% is a sensible default for most graphics and photos.
  3. Press Convert.
  4. Download each WebP, or use the ZIP when you converted several.

About This Tool

Web developers and site owners optimising images, designers exporting transparent assets, and anyone asked to supply WebP files.

Input: PNG  ·  Output: WebP.

Features and Limitations

Features

  • Transparency (alpha) is preserved in the WebP output.
  • Quality slider with a clear before/after size table.
  • Detects browsers that cannot encode WebP and explains the problem.
  • Dimensions in pixels never change.

Limitations

  • The quality slider produces lossy WebP, so pixels are not identical to the PNG. Use PNG when you need a pixel-exact copy.
  • Browsers without canvas WebP encoding (some older Safari versions) cannot create the files.
  • Animated PNG files are converted from their first frame. Metadata is not copied.
  • Each file can be up to 30 MB.
  • Processing happens on your device, so very large files depend on your browser's available memory.

Example

A 512 × 512 px PNG icon with a transparent background stays 512 × 512 px and still shows the page background through it after conversion to WebP.

Frequently Asked Questions

Does WebP keep the transparent background of my PNG?

Yes. WebP supports an alpha channel and the converter passes it through.

Why might my browser refuse to create WebP?

Saving WebP from a canvas is not available everywhere. The tool tests for it first and shows a message if it is missing.

Is the result lossless?

No. The quality slider uses lossy compression, so keep your original PNG if you need exact pixels.

Can I convert many PNG files together?

Yes. Add as many as you like and download them all as a ZIP.

Related Tools

More like this: all Image Conversion tools, all Image & Design tools or the TinySandy home page.