Why Google Created WebP (And Why It Matters for Your Site)

In 2010, Google announced WebP — a new image format designed to make the web faster. The motivation was straightforward: images accounted for most of the bytes on average web pages, yet JPEG and PNG had not evolved to meet modern performance needs.

The Problem Google Wanted to Solve

Before WebP, developers faced a tradeoff:

• JPEG — small files for photos, but no transparency
• PNG — transparency and lossless quality, but large files
• GIF — animation support, but poor compression and limited colors

Google needed a single format that could replace all three for web delivery — with better compression than each.

What WebP Brought to the Web

WebP introduced:

• Lossy compression outperforming JPEG at the same visual quality
• Lossless compression competitive with PNG
• Alpha transparency in both modes
• Animation support (alternative to GIF)

The result: pages that load faster, use less bandwidth, and score better on performance metrics that Google itself uses in search ranking.

WebP and SEO Today

Google’s push for a faster web aligns directly with Core Web Vitals. Smaller images improve LCP — often the hardest metric to fix on content-heavy pages.

Learn more in our guide: What Is WebP?

Adoption in 2026

All major browsers now support WebP. The format is the default output for many CDNs, build tools, and CMS plugins. If your site still serves only JPEG and PNG, you are behind current best practice.

Start Using WebP Today

You do not need complex infrastructure to begin. Convert your existing images with our free Image to WebP converter — entirely in your browser, with no upload required.

For JPEG photos specifically, try JPG to WebP. For graphics with transparency, use PNG to WebP.

Conclusion

Google created WebP because image size was holding the web back. Fifteen years later, the case is stronger than ever: WebP is faster, widely supported, and essential for performance-focused sites.