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KaiConvert
Local

Convert PNG to WebP

Keep the transparency, lose most of the file size.

Drop an image here

or click to browse

Accepted: PNG

Try one of these

Processed locally. Your image never leaves your device.

Keep going without re-uploading

Your image stays loaded in the editor. Pick the next action and carry on.

This is the conversion that gets overlooked. Everyone knows WebP beats JPEG for photos; fewer people realise it also beats PNG for graphics — with transparency intact and often at a fraction of the size.

For logos, icons, UI assets and cut-out product shots on a website, PNG to WebP is close to free performance. The alpha channel comes across, the visual result is the same, and the bytes drop sharply.

What you get

  • Transparency is preserved

    WebP supports full alpha, so nothing about the cut-out changes.

  • Substantially smaller

    Graphics with flat colour and sharp edges often shrink dramatically compared to PNG.

  • Lossy or high-quality lossy

    Pick a quality that suits the asset — high for logos with fine detail, lower for large decorative images.

  • Local conversion

    Decoding and encoding both happen in your browser.

How it works

  1. 1

    Load the PNG

    Decoded with its alpha channel intact.

  2. 2

    Set a quality

    For sharp-edged graphics, keep it high — 90 or above — to avoid halos around edges.

  3. 3

    Download the WebP

    Ready to ship to a website.

Why use KaiConvert

  • No upload for local tools
  • Works offline once the page is loaded
  • Cloud AI is always clearly labelled before you start

Frequently asked questions

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