How much smaller are WebP files compared to PNG?

WebP files are typically 26-34% smaller than equivalent PNG files for lossless compression, and even smaller with lossy compression. For photographs originally saved as PNG, the savings can exceed 50%.

Does converting PNG to WebP lose quality?

WebP supports both lossless and lossy compression. At quality 100, the conversion is lossless and visually identical to the original PNG. At lower quality settings, some detail is sacrificed for smaller file sizes, but quality 85 is usually indistinguishable from the original.

Does WebP support transparency?

Yes. WebP fully supports alpha channel transparency, just like PNG. When converting a PNG with transparent areas to WebP, the transparency is preserved.

Which browsers support WebP?

All modern browsers support WebP: Chrome, Firefox, Edge, Safari (since version 14), and Opera. WebP has over 97% global browser support as of 2025.

PNG to WebP Converter - Free Online Tool

How to Convert PNG to WebP

Converting PNG images to WebP is one of the most effective ways to reduce image file size for web use. WebP, developed by Google, provides both lossless and lossy compression that consistently outperforms PNG in file size while maintaining comparable visual quality.

Upload your PNG file by dragging it onto the upload area or clicking to browse your files
Adjust the quality slider -- 85 is a good default that balances size and quality
Click "Convert to WebP & Download" to save the converted file

The conversion runs entirely in your browser. Your image is never sent to any server, making this tool safe for sensitive or private images.

Why Convert PNG to WebP?

PNG files use lossless compression, which preserves every pixel but produces large files. A typical 1920x1080 PNG screenshot can be 2-5 MB. The same image converted to WebP at quality 85 is usually 200-500 KB -- a reduction of 70-90%.

Even with lossless WebP compression (quality 100), you typically save 26-34% compared to PNG. This makes WebP the better choice for web pages where load time and bandwidth directly affect user experience and search rankings.

WebP also supports transparency (alpha channel), so PNG images with transparent backgrounds convert without any loss of transparency data.

PNG vs WebP: Detailed Comparison

File size: WebP produces significantly smaller files. For photographs, WebP lossy at quality 85 is typically 70-80% smaller than PNG. For graphics and screenshots, WebP lossless is 26-34% smaller.

Quality: At lossless settings, WebP and PNG are visually identical. With lossy WebP compression, quality above 80 is generally indistinguishable from the original in normal viewing conditions.

Transparency: Both formats support alpha channel transparency. No data is lost during conversion.

Browser support: WebP is supported in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera -- over 97% of global browser share.

Frequently Asked Questions

Will my transparent PNG backgrounds be preserved?

Yes. WebP fully supports alpha channel transparency. All transparent areas in your PNG will remain transparent in the WebP output.

What quality setting should I use?

For most web use, quality 80-85 provides an excellent balance. The file will be dramatically smaller than the PNG original with no visible quality difference. For pixel-perfect reproduction, use quality 100 for lossless WebP compression.

Can I convert WebP back to PNG?

Yes. Use the WebP to PNG converter to convert back. Note that if lossy compression was applied during the PNG-to-WebP conversion, the lost detail cannot be recovered.

Is WebP supported everywhere?

WebP has broad support across all modern browsers. The only notable exception is older versions of Safari (before version 14) and Internet Explorer. For sites that need to support very old browsers, serving PNG as a fallback with a WebP primary is a common pattern.