Convert images between PNG, JPG, and WEBP formats instantly.
Drag and drop an image here
Convert Options
Lower quality results in a smaller file size but poorer image quality.
100 = lossless WebP: every pixel kept. Often the smallest choice for screenshots, logos and text.
When to Convert PNG to WebP
Convert PNG to WebP when you want to serve images on the web with significantly smaller file sizes while retaining transparency. WebP supports both lossy and lossless compression with alpha channels, making it the best modern format for web images that need to load quickly. This is the go-to conversion for optimizing website performance.
PNG vs WebP Comparison
| Feature | PNG | WebP |
|---|---|---|
| Compression | Lossless | Lossy or Lossless |
| Transparency | Yes (alpha channel) | Yes (alpha channel) |
| Best For | Graphics, logos, screenshots | Web optimization |
| File Size | Medium to Large | Very Small |
| Browser Support | Universal | All modern browsers |
Quality & Compression
Set the quality slider to 100 for lossless WebP: every pixel is kept exactly, which suits screenshots, logos and anything with text. In Google's tests, lossless WebP files averaged 26% smaller than PNGs. Lower settings (75-80) give lossy WebP, which suits photos that happen to be saved as PNG — and unlike JPG, lossy WebP still keeps transparency.
File Size Differences
How much you save depends on what is in the image. In our tests, a 99 KB app screenshot became a 13 KB lossless WebP (86% smaller), and a 1.5 MB photo saved as PNG became a 172 KB WebP at quality 80 (88% smaller). A tiny logo that was already optimised came out larger as lossy WebP but 60% smaller as lossless. The converter shows the new size next to the original, so you can see the result before you download.
Use Cases
Front-end developers optimizing Core Web Vitals scores convert PNG assets to WebP as one of the highest-impact performance improvements available. Google PageSpeed Insights specifically recommends serving images in next-gen formats like WebP. For a typical e-commerce site with product images on transparent backgrounds, switching from PNG to WebP can improve Largest Contentful Paint (LCP) by 1-3 seconds on mobile connections.
Static site generators and build pipelines (Next.js, Gatsby, Astro, Hugo) often include WebP conversion as an automated step. Developers configure their image optimization plugins to accept PNG source files and output WebP variants with automatic <picture> element fallbacks for older browsers. This workflow means designers can keep working in PNG while the build system handles the WebP conversion transparently.
Content-heavy platforms like news sites, recipe blogs, and portfolio galleries see major hosting cost reductions after switching from PNG to WebP. A food blog with 500 recipe posts, each containing 5-8 step-by-step PNG images, might cut its monthly CDN bill in half simply by converting to WebP. The bandwidth savings compound as traffic grows.