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Convert PNG to WebP
smaller with transparency
Compress your PNG images by up to 70% with WebP while preserving full transparency. Get modern, efficient images that load faster — all processed privately in your browser.
Everything you need to convert PNG to WebP
Powerful features designed for speed, privacy, and unlimited usage — all running entirely in your browser.
Up to 70% Smaller
WebP lossless compression produces files 20–70% smaller than PNG. Dramatic size savings while preserving every pixel of detail and transparency.
Preserves Transparency
WebP supports alpha transparency just like PNG. Your transparent backgrounds, logos, and overlays remain perfectly intact after conversion.
Lossless Option
Choose lossless WebP for zero quality degradation, or lossy WebP for maximum compression. You have full control over the quality-size trade-off.
100% Private
All conversion runs locally in your browser using the Canvas API. Your PNG images are never uploaded to any server — complete data privacy.
Unlimited Conversions
No daily limits, no file caps, no signup required. Convert as many PNG files to WebP as you need, completely free and forever.
Batch Processing
Convert multiple PNG files to WebP at once. Drop several images, process them simultaneously, and download all results as a ZIP.
Why convert PNG to WebP?
Discover the key advantages of switching from PNG to WebP format.
Dramatically Faster Loading
WebP files load up to 70% faster than PNG on websites. This directly improves page speed, Core Web Vitals, and search engine rankings.
Transparency Without Bloat
PNG transparency comes with large file sizes. WebP gives you the same transparency at a fraction of the size — perfect for logos and UI elements.
Reduced CDN Costs
Smaller image files mean lower bandwidth and storage costs on CDNs and hosting providers. Switching from PNG to WebP can cut image costs significantly.
Better Mobile Performance
WebP's smaller file sizes are critical for mobile users. Images load faster on cellular connections and consume less user data.
Modern Web Standard
WebP is supported by all modern browsers and recommended by Google. It has become the preferred format for web-optimized images with transparency.
No Quality Compromise
Lossless WebP gives you identical quality to PNG at much smaller sizes. You get the best of both worlds — perfect quality and efficient compression.
Who uses this converter?
PNG to WebP is used by professionals and creators across many industries.
Web Developers
Replace large PNG assets with WebP to dramatically reduce page weight while maintaining transparency for logos, icons, and UI elements.
UI/UX Designers
Export design assets as WebP for smaller file sizes in prototypes and production. Transparency is preserved for overlays and interface components.
E-commerce Sites
Compress product images with transparent backgrounds to WebP for faster store loading and reduced bandwidth costs.
Game Developers
Use WebP for game sprites and textures with transparency. Smaller file sizes mean faster loading and reduced memory usage.
Mobile App Developers
Bundle smaller WebP assets in mobile apps to reduce app size, speed up image loading, and minimize user data consumption.
Content Creators
Optimize transparent graphics for blogs, social media, and digital content with WebP for faster delivery and better user experience.
Convert in 3 simple steps
No complicated settings, no technical knowledge required. Just upload, convert, and download.
Upload Your PNG
Drag and drop your PNG file(s) onto the converter area above, or click to browse and select images from your device.
Choose Settings & Convert
Select lossless or lossy compression. Your browser processes the PNG using the Canvas API and encodes it as an optimized WebP file.
Download Your WebP
Save your converted WebP file with one click. Batch conversions can be downloaded all at once as a ZIP archive.
Tips for best results
Get the most out of your PNG to WebP conversions with these expert tips.
Use Lossless for Graphics
For logos, icons, and graphics with sharp edges, use lossless WebP to preserve perfect quality while still reducing file size by 20–40%.
Use Lossy for Photos
For photographic content in PNG format, lossy WebP at 80% quality can reduce file size by up to 70% with minimal visible quality loss.
Verify Transparency
After conversion, check that transparent areas are preserved. WebP supports full alpha transparency, so your backgrounds should remain transparent.
Check Browser Support
WebP is supported by all modern browsers. If you need to support legacy browsers, serve PNG fallbacks using the <picture> element with source tags.
Batch Convert Assets
Convert entire PNG asset libraries to WebP at once using batch upload. This is the fastest way to modernize your image collection.
PNG vs WebP
Understand the differences between these two image formats.
PNG
Source format
PNG (Portable Network Graphics)
A lossless image format with transparency support. PNG produces high-quality images but with large file sizes, making it less efficient for web delivery compared to modern formats.
WebP
Target format
WebP (Web Picture format by Google)
A modern image format supporting both lossless and lossy compression with alpha transparency. WebP produces files 20–70% smaller than PNG while preserving quality and transparency.
Frequently asked questions
Everything you need to know about converting PNG to WebP.
Is the PNG to WebP converter free?
Yes, 100% free with unlimited usage. No daily limits, no signup, no watermarks, and no hidden fees. Convertly is funded by ads and optional donations from users who find the tools helpful.
How much smaller is WebP compared to PNG?
Lossless WebP produces files 20–40% smaller than PNG with identical quality. Lossy WebP can reduce PNG file sizes by up to 70% with minimal visible quality loss. The exact savings depend on image content and settings.
Does WebP preserve PNG transparency?
Yes, WebP fully supports alpha transparency, just like PNG. Your transparent backgrounds, semi-transparent shadows, and alpha channels are perfectly preserved during conversion.
Are my images uploaded to a server?
No. The entire conversion happens in your browser using the HTML5 Canvas API. Your PNG images are never uploaded, stored, or transmitted to any server. They remain on your device at all times.
Can I convert multiple PNG files to WebP at once?
Yes, our converter supports batch processing. Drag and drop multiple PNG files onto the tool, and they will all be converted to WebP simultaneously. Download them individually or as a ZIP archive.
What is the difference between lossy and lossless WebP?
Lossless WebP preserves every pixel exactly as in the original PNG — no quality loss at all. Lossy WebP applies compression that slightly reduces quality but achieves much smaller file sizes. Choose lossless for graphics, lossy for photos.
Is WebP supported by all browsers?
WebP is supported by all modern browsers including Chrome, Firefox, Safari (since macOS Big Sur / iOS 14), Edge, and Opera. It covers over 97% of global browser usage. For legacy support, use PNG fallbacks.
Does the converter work on mobile devices?
Yes, the PNG to WebP converter works on all devices — phones, tablets, and desktops. The interface is fully responsive and optimized for screens as small as 358px wide.
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