WebP delivers 25–50% smaller files than PNG at equivalent quality while preserving full transparency. It's the modern standard for web images, supported by all major browsers. Drop your PNG files here and get optimized WebP images in seconds — converted entirely in your browser, no upload required.
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Up to 50.0 MB per file
Upload your PNG files
Drag and drop PNG images, including those with transparent backgrounds. The converter supports batch processing of multiple files at once.
Choose your quality level
For web images, 80–85% quality usually produces the best size-to-quality ratio. For artwork or images with text, try 90%+. WebP's compression is much more efficient than PNG, so even at 90% you'll see significant size savings.
Convert
The browser encodes each PNG as WebP using the WebAssembly version of Google's libwebp encoder. Transparency is fully preserved in the output.
Download and deploy
Drop the WebP files directly into your website or project. All major browsers have supported WebP since 2020. Download as ZIP if converting in bulk.
Lossy WebP is typically 25–40% smaller than equivalent PNG. Images with large flat areas (UI screenshots, icons) often compress dramatically better. Images with lots of detail and noise (photos) see more modest gains. For the smallest possible web images, consider also trying our PNG to AVIF converter.
Yes, WebP supports full RGBA transparency (alpha channel). Your transparent PNGs will have their transparency perfectly preserved when converted to WebP. This makes WebP a drop-in replacement for PNG in most web contexts.
Yes, as of 2024. Chrome, Firefox, Edge, and Safari (since version 14 in 2020) all support WebP. If you need to support iOS 13 or earlier (less than 1% of traffic as of 2024), keep PNG as a fallback or use the HTML <picture> element with both sources.
Our converter uses lossy WebP by default (quality slider visible). Lossy WebP dramatically outperforms PNG in file size but introduces minor compression artefacts. Lossless WebP still achieves 25–35% better compression than PNG with zero quality loss — but we don't expose this option in v1. If you need lossless, keep PNG or use Squoosh.app for the lossless WebP option.
WebP works in <img> tags and CSS backgrounds in all modern browsers. For Open Graph (Facebook, Twitter previews), PNG or JPG are safer choices — some social crawlers don't fully support WebP. Also, most CMS platforms and CDNs will serve WebP automatically when you upload a PNG, so manual conversion may not be needed.
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