WebP vs PNG: A Complete Comparison Guide

WebP, developed by Google, was designed to replace PNG and JPG for web use. But does it actually deliver? Let's compare WebP and PNG across every dimension that matters.

File Size: WebP Wins

WebP's biggest advantage is compression. Lossless WebP images are typically 26% smaller than equivalent PNG files, according to Google's own testing. For web performance, this translates directly to faster page loads and lower bandwidth costs.

Quality Comparison

In lossless mode, both WebP and PNG preserve identical image quality. The difference is purely in file size. WebP achieves better compression through more advanced prediction algorithms and entropy coding, without sacrificing a single pixel of quality.

Transparency Support

Both formats support full alpha channel transparency. If you're using PNG for transparent logos or icons, WebP can do the same job at a smaller file size. This makes WebP a strong candidate for replacing PNG in web projects.

Browser Support

WebP is now supported by all major browsers including Chrome, Firefox, Safari, and Edge. As of 2025, WebP has over 97% browser support worldwide. The only holdouts are very old browser versions that represent a tiny fraction of web traffic.

When PNG Still Makes Sense

Despite WebP's advantages, PNG remains the better choice in several scenarios:

• Print workflows — many print tools and design software handle PNG more reliably
• Maximum compatibility — if your images will be shared across diverse platforms
• Editing workflows — PNG is universally supported in image editors

When to Choose WebP

For anything displayed on the web, WebP is almost always the better choice. Smaller files mean faster loading times, better Core Web Vitals scores, and improved SEO. Most modern CMS platforms and image CDNs now support WebP automatically.

How to Convert

Ready to switch? You can convert PNG to WebP to optimize your web images, or convert WebP to PNG when you need broader compatibility. Both conversions happen instantly in your browser with no quality loss.