How do I convert PNG to WebP?

Select or drag a PNG image into the converter, choose the WebP quality, and click Convert to WebP. Download the converted file when it is ready.

Is the PNG to WebP converter free?

Yes. The OptiNest PNG to WebP converter is free to use and does not require an account.

Are my PNG images uploaded to OptiNest?

No. The converter processes the selected image directly in your browser, so the image does not need to be uploaded to the OptiNest server.

Why convert PNG to WebP?

WebP can produce smaller image files than PNG for many web use cases, which can reduce page weight and help improve image loading performance.

Will transparency be preserved?

Yes. WebP supports transparency. This converter keeps transparent PNG backgrounds when the browser can encode them as WebP.

PNG to WebP Converter – Free Online Converter

Image converter

Convert PNG to WebP

Turn PNG images into lightweight WebP files directly in your browser.

100% free

PNG

Drop your PNG here

or click to choose an image from your device

PNG • processed locally in your browser

WebP quality Higher quality = larger file

85%

Conversion Browser-based

Your image is converted on your device. No upload is required.

Original—

WebP—

The WebP file is generated locally and is ready to download.

Download WebP

How to convert PNG to WebP

Upload a PNG image, choose your preferred quality, and click Convert to WebP. The converted WebP image is created in your browser and can be downloaded immediately.

Why use WebP images?

WebP is designed for efficient image delivery on the web. Converting large PNG images to WebP can reduce file size and help websites load images more efficiently while retaining good visual quality.

Frequently asked questions

Is this PNG to WebP converter free?

Yes. You can use the converter for free without creating an account.

Does OptiNest upload my image?

No. The conversion runs in your browser, so your selected image does not need to be sent to the OptiNest server.

Can I convert PNG files?

Yes. PNG and PNG are both supported.

What quality should I choose?

85% is a good starting point for many web images. Increase the quality when preserving fine detail is more important than minimizing file size.

Privacy-friendly by design

Where technically possible, supported tools process your files directly in your browser instead of uploading them to our server.

About this tool