Convert PNG to WEBP — Web-Optimized with Transparency
WEBP is the best format for web images that need transparency. It produces files 50-80% smaller than PNG while preserving full alpha transparency. If you're optimizing a website, PNG to WEBP is one of the highest-impact changes you can make.
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HEIC, WEBP, AVIF, TIFF, BMP, SVG, GIF, PNG, JPG, PDF, CR2, NEF, ARW, DNG — up to 50MB each, or 50 from a folder
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Modern format with excellent compression. Limited browser support.
Apple's format. Excellent quality at small sizes.
Lossless format. Large files, ideal for print/archival.
256 colors max. Best for simple graphics.
Uncompressed bitmap. Very large files.
Vector trace. Best for logos and simple graphics. Not a pixel-perfect conversion.
Same format? You might want to compress instead.
SSIM-optimized — finds the lowest file size at your chosen visual fidelity.
Need to crop first? Use the Crop tool. Want to adjust or filter? Try the Editor.
Resize tool → Live preview, percentage scaling, and dimension presets.
Tip: Use PNG or WebP for transparent output. Standalone tool →
Lossless format — files can be large
GIF is limited to 256 colors
Best for logos, icons, and line art. Photos produce stylized results.
BMP files are uncompressed and can be very large. Consider TIFF (LZW) or PNG for lossless with smaller file sizes.
Leave empty for all pages. Multi-page PDFs produce a ZIP.
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PNG vs WEBP Comparison
| Feature | PNG | WEBP |
|---|---|---|
| Full Name | Portable Network Graphics | Web Picture Format |
| Lossy Compression | ❌ | ✅ |
| Lossless Compression | ✅ | ✅ |
| Transparency | ✅ | ✅ |
| Animation | ❌ | ✅ |
| Browser Support | All browsers, all devices | All modern browsers (Chrome, Firefox, Safari 14+, Edge) |
| Color Depth | 16.7M+ (24/32/48-bit) | 16.7M+ (24/32-bit) |
| Typical Use | Screenshots, graphics, logos, images needing transparency | Web images (smaller than JPG/PNG with same quality) |
| Year Introduced | 1996 | 2010 |
Why Convert PNG to WEBP?
Page speed is a ranking factor for Google. Replacing PNG images with WEBP equivalents is one of the easiest performance wins — you get the same visual quality, same transparency, but dramatically smaller files that load faster.
How to Convert PNG to WEBP
Upload your PNG file.
KoalaPic converts to WEBP, preserving transparency. Adjust quality for size vs fidelity balance.
Download your optimized WEBP. Transparency intact.
Quality Note
WEBP preserves full alpha transparency from PNG. At quality 85%, WEBP files are typically 50-80% smaller than PNG for photographic content, and 30-50% smaller for graphics. For lossless WEBP, savings are 20-30%.