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PNG / JPG to WebP Converter
Convert PNG or JPG images to WebP locally in your browser. Files are processed on your device and are not uploaded.
Converted WebP preview will appear here.
How it works
We draw your PNG or JPG image onto an HTML5 canvas, then call canvas.toBlob('image/webp', quality) to re-encode it. WebP is natively supported in all modern browsers, so the conversion is done entirely client-side with no network requests or external libraries.
Frequently Asked Questions
How much smaller is WebP vs JPG or PNG?
On average, WebP is 25–34% smaller than a JPG at comparable visual quality, and up to 70% smaller than lossless PNG. Results depend heavily on image content — photos compress better than flat graphics.
Does WebP support transparency?
Yes. WebP supports an alpha channel, so transparent PNGs will keep their transparency after conversion. Just upload your PNG and convert — no settings change is needed.
Privacy Guaranteed
All file conversions and processing are executed locally inside your browser using client-side JavaScript. We never upload your files, images, videos, or private data to any server. Your information remains 100% secure.