PNG to WebP Converter

Converted locally in your browser — files never leave your device.

Drop PNG files here or click to select

JPG, PNG, WebP, GIF, BMP, AVIF, TIFF — multiple files supported

How to convert PNG to WebP

  1. Drop your PNG files onto the converter above — or click to browse.
  2. Click Convert on a single file, or Convert all to process everything at once.
  3. Download individually or click Download all for a ZIP archive.
  4. Tip: transparent PNG backgrounds are preserved in the WebP output — WebP supports full alpha-channel transparency.

Why convert PNG to WebP?

WebP is a modern image format developed by Google specifically to replace JPEG and PNG on the web. WebP lossless compression achieves files up to 26% smaller than equivalent PNG. With lossy WebP, the savings are even greater — often 60–80% smaller than PNG for photographic content.

For web developers, converting PNG assets to WebP is one of the most impactful performance optimizations available. Smaller images mean faster LCP (Largest Contentful Paint), lower bandwidth costs, and better Core Web Vitals scores. Browser support is now universal: Chrome, Firefox, Safari 14+, and Edge all support WebP.

PNG vs WebP — size comparison

  • PNG lossless → WebP lossless: ~26% smaller, same visual quality
  • PNG → WebP lossy (quality 92): often 50–80% smaller, near-identical appearance
  • WebP supports transparency — transparent PNG backgrounds carry over perfectly
  • WebP is now supported by 97%+ of browsers worldwide

How to serve WebP on your website

  • Use the HTML <picture> element: WebP as primary source, PNG as fallback
  • Modern frameworks (Next.js, Nuxt, Astro) handle WebP serving automatically
  • CDNs like Cloudflare and Cloudinary can convert PNG to WebP on-the-fly
  • Keep the original PNG as backup for design tools that don't support WebP

Frequently Asked Questions

How do I convert PNG to WebP online for free?
Drop your PNG files onto the converter above, click "Convert all", then "Download all". Conversion happens instantly in your browser. No upload, no account, no software needed.
Does PNG to WebP preserve transparency?
Yes. WebP supports full alpha-channel transparency, just like PNG. When you convert a PNG with a transparent background to WebP, the transparency is preserved completely.
How much smaller will the WebP be compared to PNG?
For lossless WebP: approximately 20–30% smaller. For lossy WebP at quality 92 (this converter's default): 50–80% smaller for photographic content, 20–40% for graphics and icons. The savings are substantial for image-heavy websites.
Is WebP supported in all browsers?
Yes. WebP is supported in Chrome (since 2010), Firefox (since 2019), Safari (since version 14, late 2020), and Edge. It covers over 97% of global browser usage. It's safe to use WebP as the primary format for new web projects.
Can I convert multiple files at once?
Yes. Drop as many files as you need in one go and click "Convert all" to process everything at once. When done, click "Download all" to get a single ZIP archive containing all converted files.
Are my files uploaded to a server?
No. All conversion happens directly in your browser using the Canvas API. Your files never leave your device — no uploads, no server processing, 100% private. This also means the tool works without an internet connection once the page has loaded.