PNG to WebP Converter Online

WebP is a modern image format developed by Google that provides superior lossless and lossy compression. Converting heavy PNG files to WebP drastically reduces file sizes—often by 30% to 50%—making websites load much faster while preserving visual quality and transparency.

How it works

The converter utilizes an HTML5 Canvas and the browser's native encoding capabilities to translate the image data. It loads your PNG, processes the pixel array, and re-exports it using the WebP codec. The entire conversion happens locally on your device.

How to use it

1. Upload or drag-and-drop your PNG file
2. Wait a moment for the browser to process the image
3. Preview the converted WebP image
4. Click Download to save the optimized file

A few things worth knowing

• Transparency is preserved: Unlike JPG, WebP fully supports alpha channels. If your original PNG has a transparent background (like a logo or cutout), the resulting WebP file will keep that transparency intact
• Broad compatibility: WebP is now supported by all modern browsers (Chrome, Safari, Firefox, Edge). It is the recommended format for web images by performance auditing tools like Google Lighthouse
• Client-Side safety: Your photos are processed entirely in your local browser. They are never uploaded to a server, ensuring your privacy

FAQ

Are WebP files always smaller than PNGs? Generally, yes. WebP's compression algorithms are significantly more advanced than PNG's. However, for extremely small, simple icons (like a 16x16 pixel square of a solid color), the difference might be negligible.

Can I open WebP files on my computer? Most modern operating systems natively support viewing WebP files in their default photo viewers. You can also drag any WebP file directly into a web browser to view it.

Related Tools

• WebP to PNG
• Image Compressor