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Free PNG to WebP Converter Online

Convert PNG images to WebP format instantly while preserving transparency. Up to 30% smaller files with superior quality. Supports bulk upload and ZIP download.

Upload PNG images

Click anytime to add more images

Supported format: PNG. Transparency preserved. Processed locally.

PNG to WebP Converter – Features

Ultraconvert's PNG to WebP converter transforms transparent PNG images into the modern WebP format, maintaining alpha transparency while reducing file sizes by up to 30%.

WebP offers superior compression for both opaque and transparent images, making it perfect for modern websites, apps, and progressive web applications.

Why convert PNG to WebP?

  • Preserves PNG transparency (alpha channel)
  • 30%+ smaller files than PNG
  • Better compression than JPG + PNG combined
  • Full browser support (Chrome, Firefox, Safari, Edge)
  • Ideal for web performance and Core Web Vitals

Secure & private conversion

All PNG to WebP conversions process locally in your browser. No images leave your device or get uploaded to external servers.

How to use

  1. Upload one or multiple PNG images (transparent supported)
  2. Preview files and remove unwanted ones
  3. Click "Convert & Download" for WebP files or ZIP archive

Try our other converters: JPG to WebP, PNG to JPG, JPG to PNG or explore all image tools.