# PNG to WebP — Free Online (PdfPixels)

> Convert PNG images to modern WebP format with full alpha transparency support. Slash PNG file size by up to 75% for optimal Core Web Vitals.

Canonical URL: https://www.pdfpixels.com/tools/png-to-webp
Processing: server
Cost: free, no signup required for core use.

## Short answer

The free PNG to WebP converter by PdfPixels transforms bulky PNG files into compact WebP images while maintaining 100% transparent backgrounds. Upload your PNG and download an optimized WebP file in seconds.

## About

PNG to WebP converts bulky PNG graphics into lightweight, next-generation WebP images while preserving full alpha channel transparency. PNG is the industry standard for logos, UI components, badges, screenshots, and graphics requiring transparent backgrounds, but PNG file sizes can quickly balloon into megabytes. WebP delivers both lossless and lossy compression with 8-bit alpha transparency, slashing graphic file sizes by 60% to 80% without introducing jagged edges or discolored backgrounds.

## Key features

- Full 8-bit alpha transparency preservation for logos, icons, and UI assets
- 60% to 80% file size reduction compared to traditional 24-bit PNG files
- Interactive comparison slider to inspect transparent contours and edge anti-aliasing
- Supports lossless and high-efficiency lossy WebP encoding modes
- Free unlimited conversion with no software installation or registration needed

## How to use

1. **Upload your PNG** — Drag and drop your transparent or solid PNG image into the upload dropzone.
2. **Fine-tune quality** — Select your preferred compression balance and preview the transparent edges.
3. **Download your WebP image** — Save the optimized WebP graphic with full transparency intact.

## FAQ

### Does WebP support transparent backgrounds like PNG?

Yes! WebP fully supports 8-bit alpha channel transparency, ensuring that transparent cutouts, soft shadows, and anti-aliased edges look identical to PNG.

### How much smaller is WebP compared to PNG?

WebP is typically 60% to 80% smaller than an uncompressed or standard 24-bit PNG, delivering huge bandwidth and speed improvements.

### How do I use WebP on my website?

You can use WebP directly inside `<img src="image.webp">` or wrap it inside a `<picture>` element with a PNG fallback for legacy browsers.

### Is PNG to WebP free to use?

Yes, 100% free with zero registration, watermarks, or hidden limitations.

## Limits

- PDF tools: 50 MB per file. Merge: 20 files / 100 MB total / 1000 pages.
- Image tools: 25 MB, 50 MP max. AI tools: 20 MB.
- Rate limits: 20/min per processing route per IP.
- Server-side files are processed ephemerally and purged automatically within 60 minutes.

More tools: https://www.pdfpixels.com/tools — Full machine reference: https://www.pdfpixels.com/llms-full.txt