PNG to WebP: smaller either way it matters
Lossless WebP beats PNG at its own game by about a third; lossy WebP crushes photographic PNGs entirely.
Runs in your browser. Your file never leaves your computer.
- GraphicsLossless, about ⅓ smaller
- PhotosLossy, far smaller again
- TransparencyFully preserved
- ModeAuto-chosen, switchable
WebP gives PNG two separate upgrades. For graphics, logos and screenshots, lossless WebP stores identical pixels roughly a third smaller, transparency included, no catch. For photographs living in PNG files, lossy WebP at quality 82 cuts sizes drastically. The page inspects your image and defaults to the right mode, keeping exact pixels where exactness matters and trading invisibly where it does not. Both run locally, with the mode switchable under More options.
Questions
Is lossless WebP really identical to the PNG?
Yes, pixel for pixel, transparency included. It is the same image in better compression, verifiable by comparison tools.
How does the page pick lossless versus lossy?
It samples the image: flat-colour graphics get lossless, photographic content gets quality 82 lossy. More options overrides either way.
Any reason to keep PNGs at all?
Pipelines that require PNG input, and maximum compatibility with old tools. For serving on the web, WebP wins.
Related conversions
- WebP to PNGLossless out of the box: exact pixels and intact transparency, in the format every editor and tool accepts.
- PNG to JPGScreenshots and exports that ballooned as PNG drop to a fraction as quality-85 JPG. Transparency becomes white.
- PNG to AVIFAVIF pushes past WebP for photographic content, at the cost of slower encoding and older-software support.
- PNG to ICOA proper favicon file: 16, 32, 48 and 256 pixel versions packed together, from one square-ish PNG.
- PNG to PDFGraphics embedded losslessly, photos as JPEG, page sized to the image or fitted to A4 or Letter.
- Optimize PNGSame pixels, verified identical, in a smaller file: compression tightened with nothing traded away.
- HEIC to WebPHEIC to WebP: browser-friendly files close to the HEIC's own efficiency, without a detour through JPG.
Part of convert images in your browser. Every other conversion is on the conversions index.