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Convert PNG images to modern WebP. Free, private, runs in your browser.
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WebP is a modern image format developed by Google that provides 25-35% better compression than PNG at equivalent visual quality. It supports both lossy and lossless compression, as well as alpha transparency. WebP has become the recommended format for web images, with full support in Chrome, Firefox, Safari, and Edge.
PNG files are often much larger than necessary for web use. Converting to WebP can reduce file sizes by 25-35% with lossless compression, or even more with lossy compression — all while preserving transparency. Google's PageSpeed Insights and Lighthouse recommend serving images in WebP format to improve Core Web Vitals scores and page load performance.
Convertful loads your PNG image onto an HTML Canvas element and exports it in WebP format using the browser's built-in WebP encoder. Transparency is fully preserved. You can adjust the quality slider to balance between file size and visual fidelity. Everything runs in your browser with no server involvement.
Yes. Your images are processed entirely on your device. No files are uploaded, and no data is collected.
WebP offers 25-35% better compression than PNG. It also supports both lossy and lossless compression plus transparency.
Yes. WebP supports alpha transparency just like PNG.
Yes. Your images are processed entirely in your browser.