PNG to WebP Converter

Convert PNG images to smaller WebP files while keeping transparency — locally and privately.

Choose a PNG image

Files up to 25 MB — converted locally, never uploaded

Transparency preserved

The browser re-encodes the PNG as WebP and keeps the alpha channel, so transparent areas stay transparent. Nothing is uploaded.

How to Convert PNG to WebP

  1. 1

    Choose a .png file

  2. 2

    Watch the local conversion run

  3. 3

    Preview the WebP result

  4. 4

    Download the .webp file

Key Features

Transparency preserved

Alpha channels carry over to WebP.

Smaller web files

High-quality WebP usually beats PNG on size.

Original dimensions

Conversion never resizes your image.

Browser local

No upload means fast conversion and total privacy.

Drag, click, or paste

Drop a PNG anywhere in the upload area.

Free with no account

No sign-up, watermark, or queue.

Supported Formats

Input
PNG (image/png, .png)
Output
WebP (image/webp, .webp, alpha supported)

Privacy and Limitations

PNG to WebP runs entirely in your browser with files up to 25 MB. Transparent pixels are preserved. If the final file must go to software that only reads JPG, use the PNG to JPG converter instead — note that JPG fills transparency with white.

Ready to publish? The Image to URL converter turns the WebP into a direct CDN link for your site.

Frequently Asked Questions

Does PNG to WebP keep transparency?

Yes. WebP supports an alpha channel, so the converter keeps transparent areas transparent instead of flattening them.

Is PNG to WebP lossless?

The converter exports a high-quality 92% WebP, which is a lossy encode. PNG stays lossless, but WebP trades a small amount of detail for a much smaller file. Keep the PNG when losslessness matters.

Will the WebP be smaller than the PNG?

For most photos and illustrations, yes — often dramatically. For flat graphics with large solid areas, the difference can be smaller.

Why convert PNG to WebP?

WebP loads faster on websites because it is smaller, and every modern browser supports it. It is a common choice for web images that need transparency.

Are my PNG files uploaded?

No. The PNG is decoded and re-encoded on your device. Photo2URL never receives or stores it.

What file size is supported?

PNG files up to 25 MB are accepted. Larger files are rejected to protect browser memory.

Can I convert multiple PNG files at once?

Not yet. This tool converts one file at a time in the browser. Batch conversion isn't currently supported.

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