Convert PNG to WebP
PNG keeps every pixel but pays for it in file size — screenshots, icons and graphics can get heavy fast. WebP gives you much smaller files while still supporting transparency, making it a great web-friendly replacement for most PNGs. This tool converts PNG to WebP right in your browser using the native canvas encoder: your images never get uploaded, there are no watermarks or usage limits, and it runs offline once the page is loaded. The quality slider (default 80%) lets you trade a little fidelity for size; push it up for detailed graphics or down for decorative images. Transparency is preserved, so logos and UI overlays stay intact. One honest caveat: WebP is a lossy format at these settings, so if you need bit-for-bit lossless output keep the PNG (or convert it to JPEG XL's true-lossless mode with our PNG to JXL tool). For sharing with very old software, keep a PNG copy.
Drop PNG files here or click to browse
Processed locally — files never leave your device
How to use
- Drop your PNG files into the box, or click it to browse.
- Adjust the quality slider (80% default); transparency is kept automatically.
- Conversion runs locally in your browser.
- Download the WebP images.
Frequently asked questions
Is transparency preserved?
Yes. WebP supports an alpha channel, so transparent PNG logos, icons and overlays keep their transparency after conversion.
Are my PNG files uploaded anywhere?
No. Decoding and WebP encoding both run in your browser via the native canvas encoder. Nothing is transmitted, and it works offline.
Is this lossless like PNG?
Not at the quality settings here — WebP is lossy, so some data is traded for size. If you must keep every pixel, keep the PNG or use PNG to JXL in true-lossless mode.
How much smaller will it be?
Often a large drop for photos and complex graphics — commonly well under half the PNG size — while smooth gradients and small icons vary. The quality slider lets you tune it.
Can every app open WebP?
All modern browsers display WebP, and it's the recommended web format. Some older desktop editors and legacy software still prefer PNG, so keep a PNG copy where those matter.
Related tools
Need lossless? See PNG to JXL or Compress PNG. From JPG? Use JPG to WebP. To get PNG back from WebP, use WebP to PNG.