Cut Your Image File Sizes by 30% With WebP
Serving heavy PNG images on your website? WebP delivers the same visual quality — including transparency — at roughly 26-34% smaller file sizes. Faster load times mean better Core Web Vitals scores, happier visitors, and improved search rankings.
Why Convert PNG to WebP?
Improve website loading speed by serving lighter images without sacrificing visual quality
Boost Lighthouse and Core Web Vitals scores, directly impacting your Google search ranking
Reduce CDN and bandwidth costs for image-heavy sites — especially e-commerce and portfolio pages
Keep transparency support that WebP provides, unlike JPEG which strips the alpha channel
PNG vs WebP — Format Comparison
Portable Network Graphics (..png)
Web Picture Format (..webp)
How to Convert PNG to WebP
Upload your PNG images
Drag in PNG files from your website assets folder. Transparent backgrounds, high-resolution screenshots, and illustrations are all supported.
Choose lossy or lossless WebP
Lossless WebP keeps every pixel identical while still shrinking the file. Lossy WebP goes even smaller, with a quality slider to control the trade-off.
Serve the optimized WebP files
Download the converted images and replace PNGs on your website. Use the <picture> element for automatic fallback on older browsers.
Frequently Asked Questions
Will WebP work on all browsers?
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WebP is supported by 97%+ of browsers worldwide (Chrome, Firefox, Edge, Safari 14+). For the remaining 3%, use a <picture> fallback to PNG.
Does WebP support transparency like PNG?
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Yes. WebP supports 8-bit alpha transparency in both lossy and lossless modes, making it a drop-in replacement for PNG on the web.
How much smaller will the files be?
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Lossless WebP is typically 26% smaller than PNG. Lossy WebP at comparable quality can be 60-80% smaller. Results vary by image content.
Should I use lossy or lossless for my website?
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Use lossy (quality 80-85) for photographs and hero images. Use lossless for logos, icons, and UI elements where sharpness is critical.
Can the converter process transparent PNG logos without artifacts?
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Absolutely. WebP preserves transparent edges cleanly in both lossy and lossless modes, unlike JPEG which would add a solid background. Brand logos, icons, and UI elements with transparent backgrounds convert perfectly while still benefiting from the significantly reduced file sizes that WebP delivers over PNG.
Pro Tips for PNG to WebP Conversion
Use the <picture> HTML element with a WebP source and PNG fallback — this gives optimal performance across all browsers
For Next.js sites, the built-in Image component automatically serves WebP when supported by the browser
Test lossless WebP first — for many PNGs with flat colors, lossless WebP is dramatically smaller without any quality trade-off
Monitor your Lighthouse "Serve images in next-gen formats" audit — it should turn green after switching to WebP
Related Conversions
Ready to Convert?
Upload your PNG file above and get your WebP in seconds. Free, fast, and secure.