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PNG to WebP — Convert PNG and Keep Alpha

Turn a PNG into WebP in your browser. Same width and height; transparent areas can remain. Free, no account.

This page always downloads WebP. WebP can keep transparency. Use Compress Image only if you also need a kilobyte cap.

Preview
Controls

Upload an image to convert the format

What does PNG to WebP conversion do?

PNG to WebP rewrites a PNG as WebP at the original width and height. Unlike JPEG, WebP can keep a transparent background, which is why this pair is useful for logos and UI shots on the web.

This free PNG to WebP page on ImageStretcher runs in your browser. Upload, download WebP. No account, and the file stays on your device.

Need a different pair, a smaller file, or a new crop? Open Convert Image, Compress, or Crop on this site — each page has one job.

PNG to WebP vs compress vs crop

This page is only PNG to WebP. Compress reduces kilobytes. Crop trims the frame. Stretch changes width and height.

Stay here when you need WebP and want the same pixels. Switch tools when the problem is weight, framing, or stretch.

Open convert imageOpen the free image stretcherOpen crop imageOpen compress image

How to convert PNG to WebP online

Three steps. No account required.

  1. Step 1

    Upload PNG

    Drop a PNG file — or any image your browser can open. The original stays on your device.

  2. Step 2

    Check the preview

    Width and height stay the same. This page is locked to WebP so the download matches the URL.

  3. Step 3

    Download WebP

    Save the converted file. We do not store it on our servers.

When to convert PNG to WebP

Jobs where WebP is what the next step expects.

  • A site that wants WebP

    Convert PNG to WebP so the upload or attach step stops rejecting the file.

  • Keep the original pixels

    No stretch and no crop — only a new container for the same picture.

  • Share without extra software

    Do PNG to WebP in the browser and send the file. Nothing to install.

Why convert PNG to WebP here

  • Locked to this pair

    The download is always WebP. You do not have to hunt an export menu.

  • Original size

    PNG to WebP does not pull or pad the picture. Pixels stay put.

  • Free, on your device

    No account. Convert and download stay in the browser.

  • Same site as compress and crop

    Need a smaller file or a tighter frame? Switch without leaving ImageStretcher.

PNG to WebP FAQ

Does PNG to WebP keep transparency?
Yes. WebP can store alpha, so PNG to WebP can keep a clear background at the original size. Convert to JPG only if you want a flat white back.
Is PNG to WebP free?
Yes. No account required. Convert in your browser and download WebP.
Do you store my PNG file?
No. Convert and download stay on your device. We do not keep the WebP file on our servers.
PNG to WebP vs compress?
This page changes format to WebP. Compress shrinks file weight in KB or MB. Use compress when size limits are the problem.

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