Convert PNG to WebP Online — Fast, Lossless & 100% Client-Side

Free online PNG to WebP converter. Reduce image file sizes by up to 80% without losing visual clarity. 100% private in-browser compression.

✓ Reduces PNG payload sizes by 25–85% with identical visual perception

✓ Supports full alpha channel transparency and 24-bit color fidelity

✓ 100% in-browser processing via HTML5 Canvas (zero server upload)

✓ Optimizes Google Core Web Vitals (LCP & Page Speed scores)

How It Works

  1. Upload any standard .png image file from your device or drag and drop it into the canvas.
  2. Your browser decodes the uncompressed raster bitmap locally into memory.
  3. The modern WebP encoder compresses the pixels using predictive spatial block coding.
  4. Click Download to save the lightweight .webp asset instantly.