Convert PNG to WebP online
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WebP supports transparency just like PNG, but typically compresses much smaller — making it a good replacement for PNG on websites where load speed matters. This tool converts your PNG to WebP entirely in your browser using the Canvas API, preserving transparency. Upload your file and download the converted WebP.
Why convert PNG to WebP
This is usually the best conversion available for web graphics, because WebP keeps everything PNG offers — including full transparency — while compressing substantially better. Logos, icons, illustrations, and screenshots with alpha channels often drop by half or more with no visible difference, which makes it the natural upgrade for any PNG being served on a website.
What you gain and what you give up
You gain a much smaller file with transparency intact, which is the combination JPG cannot provide at all. You give up some compatibility with older software, and if you use lossy WebP you accept a small quality trade. For flat-colour graphics that trade is usually invisible; for images where absolute pixel fidelity matters, PNG remains the safer archive format.
When this is the wrong conversion
Keep the PNG if the file is a master copy you will re-edit, or if it needs to open reliably in older design software. WebP is a delivery format — excellent for what visitors download, less suited as the version you archive and keep working from.
Frequently asked questions
- Is transparency preserved?
- Yes, WebP supports an alpha channel just like PNG, so transparent areas are preserved in the conversion.
- Why convert PNG to WebP instead of JPG?
- If you need to keep transparency, WebP is the better target — JPG can't represent transparent pixels at all, but WebP can while still compressing smaller than PNG.
- Are my images uploaded to a server?
- No, conversion happens locally in your browser. Nothing is sent anywhere.
- Do all browsers support WebP?
- Yes, all modern browsers support viewing and using WebP images.
- Does transparency survive the conversion?
- Yes. WebP supports an alpha channel, which is the main advantage it has over converting to JPG.
- How much smaller will the file be?
- For flat-colour graphics and screenshots, often half the size or better. Photographs saved as PNG can shrink far more dramatically.