PNG to WebP Converter – Convert PNG Online (Free Tool)
Free online PNG to WebP Converter tool to convert PNG images to WebP format for smaller file sizes. Maintain transparency and reduce bandwidth usage. All conversion happens locally.
Example Output
Same visual quality, much smaller file — ideal for web serving.
screenshot.webp (~120 KB at quality 85)
What is PNG to WebP Converter?
PNG to WebP converts PNG images to WebP format, dramatically reducing file size while keeping transparency and visual quality. WebP is now supported in 97%+ of browsers — switching website images from PNG to WebP is one of the easiest perf wins available.
Why use this tool?
- Lightweight page weight that loads quickly even on slow connections
- Works on desktop, tablet, and mobile in any modern browser
- Stable behavior across visits — no surprise version drift
- Supports PNG, JPG, WebP, GIF, and SVG with consistent quality across formats
- Your original file is never uploaded — sensitive screenshots stay on your device
How to use
- Drop a PNG file (single or batch)
- Optionally choose WebP quality (lossy 0-100; lossless if 100)
- Conversion runs locally via canvas
- Download as .webp — usually 25-50% smaller than the PNG
Examples
Website asset optimisation
Bulk-convert your PNG hero/logo/icon assets to WebP — typically 30-50% smaller, faster page loads.
Preserve transparency
Logos with transparent backgrounds keep their alpha channel through the conversion.
Common use cases
- Web performance: shrinking PNG assets for production
- Reducing bandwidth costs on image-heavy sites
- Generating WebP variants for <picture> srcset
- CDN-friendly modern image format
Troubleshooting
- Quality looks degraded.
- Raise the quality slider to 90+ for graphics with sharp edges. Default 85 is a photo-friendly setting.
Frequently Asked Questions
WebP files are typically 25-35% smaller than PNG files at equivalent quality. This means faster page loads, reduced bandwidth costs, and better website performance. WebP also supports both lossy and lossless compression with transparency.
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