Convert PNG to WebP
Transform PNG files to modern WebP format for smaller file sizes and faster page loads. All processing happens locally in your browser.
Click or Drag & Drop
Supports PNG
WebP was developed by Google in 2010 specifically to be a superior replacement for both JPEG and PNG on the web. For photographic images, WebP lossy compression achieves a 25–34% smaller file size than equivalent JPEG at the same quality level. For images with transparency (which is PNG's primary use case), WebP lossless compression produces files that are roughly 26% smaller than the equivalent PNG. Converting your PNG images to WebP is one of the highest-impact optimizations you can make to improve website performance.
The adoption of WebP accelerated dramatically when Apple added native WebP support to Safari 14 in September 2020. As of today, all major browsers — Chrome, Firefox, Safari, Edge, and Opera — fully support the WebP format, covering over 97% of all global browser usage. There is no longer any meaningful barrier to serving WebP on your website. Tools like Next.js and modern WordPress themes now serve WebP automatically when the browser supports it, making this conversion a standard part of any performance optimization workflow.
One common misconception is that WebP does not support transparency. This is false. WebP fully supports an alpha channel (transparency), making it a direct replacement for PNG in all scenarios including logos, icons, product shots with white-background removal, and UI elements. Our converter preserves transparency fully during the PNG to WebP conversion. The resulting WebP file will look identical to your original PNG, but will typically be 25–40% smaller, directly improving your site's Core Web Vitals score and Google PageSpeed Insights rating.
Official Specifications
| Input Format | PNG (including transparent) |
|---|---|
| Output Format | WebP |
| Transparency | Fully Preserved (Alpha Channel) |
| Typical Size Reduction | 25–40% vs. original PNG |
| Browser Support | All modern browsers (Chrome, Firefox, Safari, Edge) |
| Processing | Client-Side — No Upload |
Avoid Application Rejection
Common reasons why photos are rejected by the automated validator or during manual scrutiny:
- If a platform rejects your WebP upload, check if it requires JPG or PNG specifically — some older content management systems and form portals do not yet accept WebP.
- For email attachments, avoid WebP — most email clients including Outlook do not render WebP images inline.
- If you are converting a PNG with text or sharp geometric shapes, use 90–100% quality to avoid blurring edges that look crisp in the lossless original.
- Test your converted WebP in multiple browsers before deploying to production, particularly if you need to support users who might use older browser versions.
How to Convert PNG to WebP
- 1Upload your PNG image
- 2Adjust the quality slider (default: 80% — a great balance of size and quality)
- 3Preview the WebP result and verify transparency is preserved
- 4Download your converted WebP file
Frequently Asked Questions
Why should I convert PNG to WebP?▼
Does WebP support transparency?▼
Which browsers support WebP?▼
What quality setting should I use for the conversion?▼
Is there a file size limit for the PNG I can upload?▼
Will converting to WebP improve my Google PageSpeed score?▼
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