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Convert PNG to WebP Online Free

Slash PNG file sizes by 50-80% with WebP while keeping transparency intact. The fastest way to optimize PNG images for the web.

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Drop PNG files here to convert to WebP

or click to browse · PNG files · Multiple files supported

80%

Why Convert PNG to WebP?

PNG files provide lossless quality and transparency support, but their large file sizes can significantly slow down websites. Converting PNG to WebP delivers the best of both worlds: you retain full transparency support while reducing file sizes by 50-80%. For websites, this means faster page loads, better Core Web Vitals scores, and improved SEO rankings. Google developed WebP specifically as a more efficient replacement for PNG and JPEG on the web. A typical PNG icon or graphic at 500 KB could become just 100 KB as WebP with no visible quality difference. For sites with many PNG assets such as logos, icons, UI graphics, and illustrations, batch converting to WebP can cut total page weight by megabytes.

PNG vs WebP Comparison

Both PNG and WebP support alpha transparency, making them suitable for graphics, logos, and overlays. PNG uses lossless DEFLATE compression with no quality loss but larger files. WebP supports both lossy and lossless compression, typically producing files 26% smaller in lossless mode and 25-34% smaller in lossy mode compared to PNG. PNG has universal support in every browser and image application. WebP is supported by all modern browsers (97%+ globally) but may not work in older software. PNG is the standard for design tools and print workflows. WebP is the standard for web delivery where performance matters most.

Frequently Asked Questions

Does WebP preserve transparency from PNG?▶
Yes, WebP fully supports alpha channel transparency just like PNG. When you convert a PNG with transparent areas to WebP, all transparency information is perfectly preserved. WebP achieves this with significantly smaller file sizes than PNG.
How much smaller is WebP compared to PNG?▶
WebP files are typically 50-80% smaller than equivalent PNG files. A 5 MB PNG image might become 1-2 MB as WebP with no visible quality difference. For images with transparency, WebP achieves even more impressive savings compared to PNG's lossless compression.
Is PNG to WebP conversion lossy or lossless?▶
This tool uses lossy WebP compression for the best file size reduction. You can control the quality with the slider — at 90%+ the quality loss is imperceptible. WebP also supports lossless mode, but lossy WebP typically provides the best balance of quality and file size for web use.
Should I replace all PNG images on my website with WebP?▶
For most web use cases, yes. WebP provides the same transparency support as PNG with dramatically smaller file sizes. This improves page speed, reduces bandwidth costs, and helps SEO. The only exception might be images that need to be pixel-perfect for technical or design specifications.
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