PNG to WebP

A PNG to WebP converter re-encodes a PNG image as WebP, a modern format that keeps the alpha transparency PNG is known for while producing a much smaller file. PNG uses lossless compression, which is excellent for sharp edges, logos, screenshots, and graphics but tends to create large files for anything detailed. WebP can compress the same content far more efficiently, and its lossy-with-alpha mode often cuts size dramatically while preserving the transparent background. This tool decodes each PNG and re-encodes it as WebP entirely in your browser using the Canvas API, so nothing is uploaded. The transparency handling is the key reason to choose WebP over JPEG here: JPEG has no alpha channel and would flatten a transparent PNG onto a solid background, whereas WebP keeps the cutout intact. Savings vary with the image. Flat graphics, icons, and UI screenshots with large uniform areas often shrink substantially, while photographic PNGs see even larger reductions because PNG is a poor fit for photos in the first place. Bear in mind that converting a lossless PNG into lossy WebP is a one-way trade: you gain size savings but introduce a small amount of compression, so for archival masters or images you will keep editing, retain the PNG. WebP is supported across all current major browsers, making it ideal for website assets, app sprites, and web galleries where smaller transparent images speed up rendering. Batch mode converts a whole set at once, and because the work is local, it is fast, private, and available offline after the page loads.