PNG to WebP Converter – Convert PNG to WebP Free Online

Convert PNG images to WebP in seconds – up to 5 at a time.

Choose images

PNG images — up to 5 at a time — or drop them here

Your files stay on your device — nothing is uploaded.

Convert PNG to WebP in a few seconds. PNG is a lossless format that keeps every pixel exactly and supports transparent backgrounds — ideal for logos, screenshots and graphics, but files are larger. Choose your PNG files, pick the quality, and download WebP images — everything happens in your browser, so your pictures are never uploaded.

How to convert PNG to WebP

  1. Click "Choose images" or drag and drop up to 5 PNG files into the box.
  2. Set the quality (90% is a good default) if you want.
  3. Click "Convert".
  4. Download each WebP image, or all of them as a ZIP.

Why use ZentaPDF PNG to WebP?

100% privateFiles are processed in your browser. Nothing is uploaded to any server.
Free, no sign-upNo account, no email, no watermark and no daily limits.
FastNo upload or download wait — results are ready in seconds.
Works everywhereUse it on Windows, Mac, Linux, Android or iPhone in any modern browser.
Keeps qualitySmart settings keep your images sharp.
Large filesHandle big files and many pages — limited only by your device’s memory.

Frequently asked questions

Are my files uploaded to a server?

No. ZentaPDF processes your files inside your own browser using JavaScript. Nothing is uploaded, so nobody else can see your documents — not even us.

Why convert PNG to WebP?

WebP makes your images much smaller, so web pages load faster and score better in Google PageSpeed — great for websites and blogs.

What happens to transparent backgrounds?

Transparency is kept — WebP supports transparent backgrounds.

How many images can I convert at once?

You can convert up to 5 images at a time. When they are done, click "Start over" to convert the next 5.

Is it really free? Do you add a watermark?

Yes, it is completely free with no sign-up, no watermark and no daily limits. The site is supported by a few non-intrusive ads.

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