Private browser tool

PNG to WebP Converter

Convert PNG to WebP online with adjustable quality and transparent backgrounds. Compare file sizes and download images locally, without uploads.

✓ Local processing✓ No uploads✓ No account
  1. 1Add input
  2. 2Choose options
  3. 3Get result

Private on this device

Filemivo uses browser APIs to process your input on this device. File contents, filenames and metadata are not sent to our server or analytics.

Next step

Continue working with your file

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Simple by design

From file to result in three steps

  1. 1

    Choose one or more PNG files.

  2. 2

    Set quality and select PNG to WebP.

  3. 3

    Check transparency and output size, then download the WebP images.

Practical guidance

When to use PNG to WebP

Best for

Creating smaller web images from PNG photos or graphics while retaining transparent backgrounds.

What you get

A static WebP at the original dimensions, encoded with the selected lossy quality setting.

Useful tip

Compare small text and sharp edges at full size. Keep PNG when exact lossless pixels matter.

Check edges as well as file size

A transparent product image can benefit from WebP delivery, but lettering and sharp edges may change with lossy encoding. Compare the result on both light and dark backgrounds. A higher quality setting may help, while a larger output is a reason to retain the PNG.

Compare WebP and PNG for your image →

Good to know

Frequently asked questions

Does PNG to WebP preserve transparency?+

Yes. WebP supports transparent pixels, and this converter retains them from static PNG input.

Is this a lossless WebP converter?+

No. The browser encoder uses a quality setting; this tool does not expose a lossless WebP mode. Keep the PNG if exact pixel preservation is required.

Does my file leave my device?+

No. This tool processes your file inside your browser and does not send its contents, name or metadata to Filemivo.

Is PNG to WebP free?+

Yes. It is free to use and has no artificial file-size limit. Your browser and device memory determine the practical limit.