Convert PNG to WebP

Convert PNG screenshots, graphics and transparent images to WebP while keeping transparency. Batch up to 100 files, locally in your browser.

Good to know

WebP supports an alpha channel in lossy mode, which PNG can’t do. That’s why a transparent product cut-out often shrinks dramatically.
For screenshots with sharp text, use quality 85+ or keep PNG; lossy compression can soften small type.
Transparency is preserved; nothing is flattened onto a background.

Can visitors see WebP?

For websites, the safe pattern is a <picture> element listing AVIF, then WebP, then a JPG fallback; each browser picks the first it supports. More in WebP vs AVIF.

Other converters: JPG to WebP · WebP to JPG · WebP to PNG · JPG to AVIF · PNG to AVIF · AVIF to JPG

Questions

Is transparency kept?

Yes. WebP stores alpha, and the converter keeps it.

Why is my WebP bigger than the PNG?

Very small, flat PNGs (icons with a few colours) are already efficient. The tool shows the real sizes; keep whichever is smaller.

Are my files uploaded for conversion?

No. The conversion runs in your browser with WebAssembly codecs. Files never leave your device.