Convert PNG to WebP
Convert PNG images to WebP for significantly smaller file sizes while preserving transparency. WebP supports both lossy and lossless compression with alpha channel transparency — offering the best of both PNG and JPG in a single modern format. For graphics, logos, and screenshots, WebP produces files 25-35% smaller than PNG. For photographs currently stored as PNG, the savings can be even more dramatic. All processing runs in your browser.
Drop images here or click to upload
PNG — up to 50MB each
Convert PNG to WebP for 25-35% smaller files
Preserves alpha channel transparency from PNG
Both lossy and lossless WebP compression available
Adjustable quality for precise size/quality control
Batch convert multiple PNG files simultaneously
Resize dimensions while converting
Supported by all modern browsers (97%+ global coverage)
100% private — images never leave your device
PNG to WebP: The Best Upgrade for Web Graphics
If your website uses PNG images for graphics, icons, or screenshots, converting to WebP is one of the easiest performance wins available. WebP's combination of smaller files + transparency support makes it a direct, superior replacement for PNG in virtually all web contexts.
Size Savings by Image Type
- Photographs in PNG: 60-80% smaller as lossy WebP (PNG was never the right format for these)
- Screenshots: 30-50% smaller as lossy WebP at 85% quality
- Logos and icons: 25-35% smaller as lossless WebP
- Illustrations with flat colors: 20-30% smaller as lossless WebP
- Graphics with transparency: 25-40% smaller while preserving the alpha channel
Related Tools
- Compress WebP — optimize existing WebP images
- Convert WebP to PNG — reverse conversion when needed
- Convert PNG to JPG — when transparency isn't needed
- Compress PNG — optimize PNGs without converting
- Compress for Web — full web optimization workflow
- Bulk Compress — batch process image libraries
Frequently Asked Questions
Why convert PNG to WebP?
WebP files are typically 25-35% smaller than PNG at equivalent quality, and WebP supports both lossless compression and transparency — the best of both worlds. For web use, this means faster page loads, lower bandwidth costs, and better Core Web Vitals scores. Unlike JPG, WebP preserves the transparency that makes PNG popular for logos, icons, and graphics.
Does WebP support transparency like PNG?
Yes! WebP fully supports alpha channel transparency, just like PNG. This makes WebP the ideal replacement for PNG in web contexts — you get the same transparency support with significantly smaller file sizes. Both lossy and lossless WebP modes support transparency.
Is WebP supported by all browsers?
All modern browsers support WebP: Chrome, Firefox, Safari (since version 14), Edge, Opera, and all Chromium-based browsers. As of 2026, WebP has over 97% global browser support. The only unsupported browsers are Internet Explorer (discontinued) and very old Safari versions.
Should I use lossy or lossless WebP?
For photographs stored as PNG: use lossy WebP (70-85% quality) for maximum size reduction. For graphics, logos, and images where pixel-perfect accuracy matters: use lossless WebP (100% quality) which is still smaller than PNG. For graphics with text and transparency: lossy at 85-90% quality preserves sharpness with good compression.
How much smaller will WebP be compared to PNG?
Results vary by image content. For photographs: 60-80% smaller (even more dramatic than the typical 25-35% because PNG is poorly suited for photographs). For graphics with flat colors: 25-35% smaller. For screenshots with mixed content: 30-50% smaller. Lossless WebP is typically 25% smaller than lossless PNG.
Can I batch convert PNGs to WebP?
Yes! Upload multiple PNG files and convert them all to WebP simultaneously with the same quality settings. Download individually or as a ZIP. This is perfect for converting an entire website's image library from PNG to WebP for performance optimization.
Are my images uploaded anywhere?
No. All processing happens entirely on your device in your browser. Your PNG files are read into browser memory, converted to WebP locally, and the output is saved directly to your device. No server communication occurs.
What about browsers that don't support WebP?
With 97%+ support, WebP is safe for most use cases. For the remaining ~3% (mostly old Safari), you can serve PNG as a fallback using the HTML picture element or your CDN's content negotiation. Most modern web frameworks handle this automatically.
Last updated: March 2026