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Free PNG to WebP Converter — Smaller Files, Transparency Kept
Convert PNG images to WebP and reduce file size by up to 50% while keeping transparency. Perfect for logos, icons and product images on websites. Free, no sign-up, no upload.
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Supports JPG, PNG, WebP, BMP, GIF, HEIC, SVG · Up to 20 files
PNG to WebP — smaller files with transparency
Unlike JPG, WebP fully supports transparency — making it the perfect modern replacement for PNG on websites. You get the transparent background your logo or icon needs, at a file size that is 25–50% smaller than the equivalent PNG.
This is especially valuable for e-commerce product images with white or transparent backgrounds, logos used in headers and footers, and UI icons in web apps — all cases where transparency is non-negotiable but performance matters.
| Feature | PNG | WebP | JPG |
|---|---|---|---|
| Transparency | ✅ Yes | ✅ Yes | ❌ No |
| Compression | Lossless (large) | Lossy or lossless | Lossy (small) |
| Typical file size | Large | Small (−25–50%) | Small |
| Browser support | ✅ Universal | ✅ 96%+ | ✅ Universal |
| Best for web | ⚠️ Only if needed | ✅ Best choice | Photos only |
Frequently asked questions
Does WebP support transparency like PNG?
Yes. WebP supports an alpha channel (transparency) just like PNG. This makes it the ideal replacement for transparent PNGs on websites — you get the same transparency with significantly smaller file size.
How much smaller is WebP compared to PNG?
For photographic content, WebP is typically 25–35% smaller than PNG. For lossless WebP (which preserves transparency perfectly), files are still about 26% smaller than equivalent PNGs according to Google's research.
When should I use PNG to WebP instead of PNG to JPG?
Use PNG to WebP when your image has transparency that you want to preserve — logos, icons, product images with transparent backgrounds. WebP keeps the alpha channel; JPG does not support transparency at all.
Will transparent areas in my PNG remain transparent in WebP?
Yes. The converter preserves the alpha channel when converting from PNG to WebP. Transparent pixels remain transparent in the output file.
Is lossless WebP available?
This converter uses lossy WebP at your chosen quality setting (default 90%). At 90% quality, transparent PNG logos and icons look visually identical while being significantly smaller. For truly lossless WebP, use Squoosh.app or the cwebp command-line tool.
Can I convert multiple PNG files to WebP at once?
Yes. Drop up to 20 PNG files onto the converter. All are converted simultaneously in your browser.