jarvisbox

Convert PNG to WebP for Faster Web Pages

Google PageSpeed Insights and Lighthouse both flag PNG images as optimization opportunities when WebP versions are not available. Switching from PNG to WebP for your web assets is one of the highest-impact performance improvements you can make — reducing total page weight by 20–40% for image-heavy pages.

WebP achieves smaller file sizes than PNG through more efficient compression algorithms. In lossy mode, it outperforms JPEG for many types of images while adding alpha-channel support. In lossless mode, it beats PNG at its own game — smaller files with identical pixel data.

This tool converts your entire PNG asset library to WebP in one batch. Drop your images, process them at quality 85 (the sweet spot recommended by Google for web images), and download a ZIP ready to deploy. No upload — your assets stay private throughout.

100% client-side · no upload. PNGs are converted to WebP using the Canvas API in your browser. Transparency is fully preserved. Files never leave your device.
Output settings
Features: Alpha transparency preserved Batch processing ZIP download Lossy or lossless mode

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