How much smaller is the WebP?

Typically 60–80% smaller than the source PNG. UI assets, screenshots, and graphics with flat colors see the largest savings.

Does transparency survive?

Yes — WebP supports a full alpha channel like PNG. Every transparent and semi-transparent pixel is preserved.

Lossless vs lossy WebP — which should I pick?

For UI assets, icons, and logos where every pixel matters: lossless. For photographs and screenshots where some compression is fine: lossy at quality 85–95.

Will my WebP-loaded site fail on old browsers?

WebP is supported on all modern browsers. For IE11 / older Safari, serve via ` ` with a PNG fallback.

PNG to WebP Converter — Shrink Transparent Images for the Web

Convert PNG to WebP and cut file size dramatically while keeping every transparent pixel. Server-side encode, quality slider, optional lossless mode.

Drop a PNG image or click to browse

About PNG to WebP

PNG handles transparency well but its file sizes are often 3–5× larger than necessary for the web. WebP supports the same transparency and matches PNG quality at a fraction of the size — typical savings are 60–80% on UI assets, icons, and screenshots. This tool decodes PNG server-side and re-encodes as WebP. Toggle lossless mode if you need pixel-perfect output (still smaller than PNG); leave it off for the standard quality-controlled WebP.