PNG to WebP

PNG files are usually far bigger than they need to be

PNG is lossless, which is exactly right for screenshots with small text or diagrams with hard edges. It is the wrong choice for a photograph or a large decorative graphic, where it can easily be several times the size of an equivalent WebP.

WebP supports transparency too, which is what makes it a genuine PNG replacement rather than only a JPG one. You get the alpha channel and a much smaller file.

Transparency is preserved

Logos, icons, cut-out product shots and anything with a transparent background come through with the alpha channel intact. There is no white box behind your graphic and no halo around the edges.

Your files stay on your device

This converter runs on your own machine using the browser canvas. Nothing is transmitted, so nothing can be retained or leaked. Open developer tools, watch the Network tab, and convert. It stays empty.

That matters more than it sounds for design work. Client logos, unreleased product art and internal diagrams are exactly the sort of thing that should not be sitting on a stranger's server.

When to keep the PNG

Keep PNG when the pixels are the point: screenshots containing small text, technical diagrams with sharp edges, and source images you intend to edit again. For everything else, WebP is smaller for no meaningful loss.

Questions people ask

Does PNG to WebP keep transparency?

Yes. WebP supports an alpha channel, so transparent backgrounds are preserved exactly. This is the main advantage over converting to JPG.

How much smaller are the files?

For photographic or complex PNGs the saving is often large, commonly well over half. For simple flat graphics the difference is smaller. The tool shows the exact figure per file.

Is anything uploaded to a server?

No. The conversion happens in your browser. You can verify it by opening the Network tab in developer tools and watching it stay empty while you convert.

Should I ever keep the PNG instead?

Yes, for screenshots with small text, diagrams with hard edges, and any master file you plan to edit again. PNG is lossless, so nothing degrades.

Can I convert a whole folder at once?

You can select or drop many files together and convert them in one pass. Each file gets its own download link.