Convert PNG to WebP

WebP supports transparency like PNG but usually at a much smaller size, so logos and graphics keep their transparent background while getting lighter.

Choose a PNG file

or drag and drop it here

Converted in your browser — no upload needed for most files.

When to convert PNG to WebP

Transparency, but smaller

WebP keeps the alpha channel, so a transparent logo stays transparent.

Better for large flat graphics

Illustrations and UI assets often shrink substantially compared with PNG.

Made for the web

WebP was designed for exactly this: web-delivered images at lower cost.

Where the conversion happens

This converter runs in your browser using its built-in image support. Your file is read from disk, converted, and offered back for download — in the normal case it never leaves your device, so there is nothing for us to store, and the conversion works the same whether the file is 50 KB or 50 MB.

Very large images can exceed what a browser tab can safely decode. If that happens, or if your browser cannot produce WebP files, CurePDF will say so and offer to process the image on our servers instead — but only after you explicitly agree. Nothing is uploaded before you choose that.

Frequently asked questions about PNG to WebP

Is the transparent background kept?

Yes. WebP stores an alpha channel, so transparent areas stay transparent rather than being filled in. That is the main reason to pick WebP over JPG for logos, icons and anything with a cut-out background.

Is the WebP lossy or lossless?

Lossy, at 90% quality. On flat-colour graphics and logos that is generally invisible. On a screenshot full of small text, the original PNG may still be the better file to keep.

Which images benefit most from this conversion?

Two kinds. Large graphics with flat areas of colour, where PNG is already efficient but WebP is more so; and photographs that were saved as PNG by accident, which often shrink dramatically.

Do I still need to keep a PNG version as a fallback?

For browsers, no — support is universal across current major browsers. Keep a PNG only if the image also has to work in older software outside the browser, or somewhere you know rejects WebP.

What happens to animation and metadata?

An animated source is reduced to its first frame as a still image, and metadata is not carried into the WebP.