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Free online PNG to WebP converter. Drop your PNG file below to securely convert it to WebP — no server uploads, 100% private.
Upload your PNG image here
Converting PNG to WebP dramatically reduces file size (often 25-35% smaller) while maintaining near-identical visual quality. WebP is the modern image format recommended by Google for faster page loads and better Core Web Vitals scores. If you run a website, switching from PNG to WebP can significantly improve your PageSpeed Insights rating.
Unlike other png-to-webp converters that upload your files to remote servers, our tool processes everything directly in your browser using the HTML5 Canvas API. Your images never leave your device. No cloud uploads. No data collection. No registration required. Just instant, private conversion.
Yes, our PNG to WebP converter is 100% free with no hidden limits, no registration required, and no watermarks on your downloaded images.
No. The entire PNG to WebP conversion process happens locally in your browser using HTML5 Canvas APIs. Your images are never uploaded to any external server.
Yes, WebP and PNG support full transparency (alpha channels), so your transparent backgrounds will be preserved.
There is no hard file size limit since all processing happens in your browser. However, very large images (above 20MB) may take longer depending on your device's memory and processing power.
WebP compression at our default 92% quality setting produces results that are virtually indistinguishable from the original, while significantly reducing file size.