PNG to WebP Converter — Free Online Tool

Convert PNG to modern WebP — much smaller, keeps transparency. · No signup · Works on mobile

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100% private: your files are processed in your browser. Nothing is uploaded to our servers.

How to use the png to webp converter

  1. 1

    Drag & drop your PNG file into the upload zone (or click to browse).

  2. 2

    The conversion to WebP starts automatically — adjust quality options if shown.

  3. 3

    Click Download to save your WebP file. Nothing was uploaded anywhere.

What does this tool do?

This free PNG-to-WebP converter shrinks PNG images dramatically — often 60–90% smaller — while keeping transparency fully intact. WebP is the modern web standard supported by 97%+ of browsers, making this conversion one of the fastest wins for page speed and Core Web Vitals.

How does the png to webp converter work?

The PNG is decoded and re-encoded with the WebP codec built into your browser via Canvas toBlob("image/webp"). At the default quality 85, photographic PNGs shrink enormously; graphics with flat colors compress even better while edges stay clean. The alpha channel carries over automatically.

Frequently Asked Questions

How much smaller is WebP than PNG really?

For photographic content, WebP at quality 80–85 is commonly 70–90% smaller than PNG. For flat-color graphics, 50–80% smaller. Google's own benchmark puts WebP 26% smaller than PNG even in lossless mode. A 2 MB PNG screenshot typically becomes a 150–400 KB WebP.

Is WebP safe to use on my website in 2026?

Yes — WebP has 97%+ global browser support (Chrome, Firefox, Safari 14+, Edge, and all modern mobile browsers). Unless you must support Internet Explorer or pre-2020 Safari, you can serve WebP directly without fallbacks.

Is the PNG to WebP converter really free?

Yes — 100% free with no hidden charges, trial limits, or premium tiers for core features. No account or email needed. The site is supported by non-intrusive display ads, which keeps every tool free for everyone.

Are my files private when using the PNG to WebP converter?

Completely. The PNG to WebP converter processes everything locally in your browser — your files are never uploaded to any server. When you close the tab, everything is gone. This makes it safe for confidential documents, client work, and personal photos.

Does the PNG to WebP converter work on mobile phones?

Yes. It's built mobile-first and works on any modern phone browser — iPhone (Safari) and Android (Chrome) included. You can pick files straight from your camera roll and download results directly to your device.

Do I need to install any software to use the PNG to WebP converter?

No. The PNG to WebP converter runs entirely in your web browser — no downloads, extensions, or signup. Open the page, use the tool, download your result. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.