PNG to WebP Online
Convert PNG images to WebP format for smaller file sizes — all in your browser.
Drop a PNG image here or click to browse
.png
All processing happens in your browser. No files are uploaded.
What Is PNG to WebP Conversion?
PNG to WebP is a free online tool that convert PNG images to WebP format for smaller file sizes — all in your browser. No files are uploaded — everything is processed locally on your device.
This PNG to WebP converter transforms PNG images into Google's WebP format, which uniquely supports both lossless compression with transparency and lossy compression for even smaller files. Lossless WebP is typically 26% smaller than PNG with identical quality, while lossy WebP with transparency can be 60-80% smaller. This makes WebP the ideal next-generation format for website icons, UI sprites, product images with transparent backgrounds, and any PNG asset served on the web. Replacing PNGs with WebP directly improves Core Web Vitals scores and page load speed. This converter processes images in your browser — no files are uploaded to any external server.
Privacy guarantee: PNG to WebP processes all files directly in your browser using WebAssembly. No data is uploaded to any server, no information is collected, and the tool works offline after loading. Unlimited usage with no signup, no watermarks, and no file size limits.
How to Use PNG to WebP
Upload your PNG image
Select PNG files from your device or drag them in. Transparency is preserved automatically.
Choose compression mode
Select lossless (identical quality, 26% smaller) or lossy (much smaller, slight quality reduction) WebP output.
Download the WebP file
Click Convert and download the optimized WebP image for your website or project.
Why Use Our PNG to WebP Converter?
Frequently Asked Questions
Does WebP support transparency like PNG?
Yes. WebP supports full alpha-channel transparency in both lossy and lossless modes — unlike JPEG, which drops transparency entirely. This makes WebP a direct replacement for PNG on the web with significantly smaller file sizes.
Should I use lossy or lossless WebP for my website?
Use lossless WebP for logos, icons, screenshots, and UI elements where pixel-perfect accuracy matters. Use lossy WebP for product photos, hero images, and content images where 60-80% size savings outweigh minimal quality reduction.
How much smaller will my PNG be as WebP?
Lossless WebP averages 26% smaller than PNG. Lossy WebP at quality 80 can be 60-80% smaller. Images with large flat-color areas (logos, diagrams) see the biggest savings, while complex photographs see moderate improvements.
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