Convert PNG to WebP — Free, 100% Local
PNG files tend to be large, especially screenshots and images with transparent backgrounds. WebP also supports transparency (alpha channel), so your transparent background is fully preserved after conversion — while the file often shrinks by more than half. It's the top choice for slimming down web images.
This tool outputs lossy WebP at 92% quality, which is visually indistinguishable for screenshots, UI graphics and most images; if you need a bit-exact lossless copy, keep the original PNG. All major browsers support WebP, so it's safe to use directly on websites.
Upload PNG Image
Drag and drop an image here, or click to select
Supports JPG, PNG, WebP, BMP, GIF
Output format: WebP. Need another format? Use the full converter.
Result
Upload an image and it will be converted to WebP instantly, with a before/after size comparison.
Frequently Asked Questions
Will my images be uploaded?
No. Conversion runs entirely in your browser using the Canvas API — 100% local processing. Your images never leave your device.
Is PNG transparency preserved in WebP?
Yes. WebP supports an alpha transparency channel, so transparent backgrounds are fully preserved — which is why WebP is a better PNG replacement than JPG.
Is the output WebP lossless?
This tool outputs lossy WebP at 92% quality — much smaller files with virtually no visible difference. If you need bit-exact lossless storage, keep the original PNG.
Why is WebP recommended for website images?
At the same visual quality, WebP files are much smaller than PNG, speeding up page loads and cutting bandwidth — good for Core Web Vitals and SEO — and every major browser supports it.