PNG to WebP Converter
Convert PNG images to WebP right in your browser — free, instant, and private. WebP typically produces much smaller files than PNG at the same visual quality, and it keeps transparency, so it's ideal for faster-loading web pages. Your file never leaves your device.
Updated June 2026
Why convert PNG to WebP
WebP was designed for the web: it compresses images far more efficiently than PNG, often cutting file size by 25–80% while looking the same to the eye. Smaller images mean faster page loads and better Core Web Vitals scores, which is why WebP is now supported by every modern browser.
Crucially, WebP keeps the alpha channel, so a PNG with a transparent background stays transparent after conversion — something JPG can't do. That makes WebP a true drop-in replacement for PNG on the web.
Choosing a quality level
WebP uses lossy compression by quality percentage, like JPG. Around 80–90% is the sweet spot for most images — a big size saving with no visible loss. Drop lower for the smallest possible files when some softening is acceptable, or raise toward 100% when you need maximum fidelity.
For crisp screenshots, logos, or line art where every pixel matters, a high quality setting keeps edges sharp while still beating PNG on size.
Frequently asked questions
Does this tool upload my PNG anywhere?
No. The conversion runs entirely in your browser on the HTML canvas — your image is never sent to a server. That makes it instant and completely private.
Does WebP keep my PNG's transparency?
Yes. WebP supports an alpha channel, so transparent areas of your PNG stay transparent in the WebP. That's a key advantage over converting to JPG, which would fill transparency with a solid color.
How much smaller will the WebP be?
It varies by image, but WebP commonly comes out 25–80% smaller than the equivalent PNG at the same visual quality. Photographs and detailed images see the biggest savings; simple graphics see less but still benefit.
Is WebP supported everywhere?
Every current browser supports WebP, and so do most modern apps and platforms. A few older or specialized tools still expect PNG — if you hit one, convert the WebP back to PNG.
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- PNG to AVIF ConverterConvert PNG to AVIF for next-gen image compression — free, in-browser, no upload.
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- Image to Base64 ConverterEncode any image to a Base64 data URI for inline CSS/HTML — free online tool, nothing leaves your browser.
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