PNG to WebP Converter
Convert PNG images to smaller WebP format for faster web pages. No uploads.
Why Convert PNG to WebP?
PNG is the gold standard for lossless images, but it pays for that quality with large file sizes. WebP — developed by Google specifically for the web — produces files that are 25–80% smaller than PNG at comparable visual quality, while still preserving full alpha-channel transparency. Switching your site's PNGs to WebP is one of the fastest wins for page load speed and Google's Core Web Vitals, particularly Largest Contentful Paint (LCP). All modern browsers have supported WebP since 2020, so real-world compatibility is no longer a concern for web use.
PNG vs WebP — Size Comparison
| Image type | PNG size | WebP size (est.) | Saving |
|---|---|---|---|
| Logo / graphic | 200 KB | 50–80 KB | 60–75% |
| Screenshot | 500 KB | 150–200 KB | 60–70% |
| Photograph | 2 MB | 400–600 KB | 70–80% |
When to Convert PNG to WebP
- Website hero images and banners — large PNGs are among the biggest causes of slow LCP scores.
- Product images in e-commerce — switching to WebP can halve image payload, speeding up catalogue pages significantly.
- Logos and icons with transparency — WebP handles alpha channels just like PNG, so transparent backgrounds are preserved perfectly.
- Blog and article images — smaller images reduce bandwidth costs and improve mobile load times.
Quality Setting
The quality slider controls how aggressively the WebP encoder compresses the image. At 80–85% the output is visually identical to the PNG source for most images. Drop to 70–75% for even smaller files when pixel-perfect accuracy is not required, such as background textures. Keep at 90%+ for product photos where fine detail matters to customers.
Serving WebP with a PNG Fallback
For the rare case where a visitor is on a very old browser, use the HTML <picture> element to serve WebP with an automatic PNG fallback:
<picture> <source srcset="image.webp" type="image/webp"> <img src="image.png" alt="Description"> </picture>