PNG to WebP converter: free, private, in your browser

Convert PNG to WebP without losing a single pixel. Transparency is kept, and screenshots, logos and graphics usually come out much smaller. Your images stay on your device.

PNG to WebP

Convert PNG to WebP without losing quality. Lossless WebP keeps every pixel, including transparency, and is usually much smaller than the PNG, especially for screenshots, logos, icons and illustrations.

How do I use the PNG to WebP converter?

  1. Choose a mode. Pick Lossless (default), Near-lossless, or High quality with a quality between 40 and 100. Optionally set a maximum size.
  2. Add your images. Drag JPG, PNG, GIF, BMP or AVIF files (or whole folders) onto the page, paste an image, or click anywhere to pick files.
  3. Let it convert. Each file is security-checked, color-optimized when that causes no visible loss, and encoded to WebP by libwebp at its most thorough setting (method 6), one file at a time.
  4. Download. Download each WebP on its own, drag it to your desktop (Chrome and Edge), or download everything as one ZIP.

Frequently asked questions

How do I convert PNG to WebP without losing quality?

Use the default Lossless mode. smallwebp.io encodes the PNG as lossless WebP, which decodes to exactly the same pixels, keeps transparency, and is usually much smaller than the PNG.

Does converting to WebP keep transparency?

Yes. WebP supports an alpha channel, so transparent areas in PNG, GIF and AVIF images stay transparent in the WebP.

What is lossless WebP?

Lossless WebP is a separate WebP codec (VP8L) that compresses an image without changing a single pixel. Decoding a lossless WebP gives back exactly the original pixels. It is usually much smaller than PNG for screenshots, graphics and illustrations.

Can I convert multiple images to WebP at once?

Yes. Drop many files or a whole folder at once. They are converted one after another, and the finished WebPs can be downloaded together as one ZIP that keeps the folder paths.

Converters