PNG vs WebP: Which Format Is Better for Your Needs?
A detailed head-to-head comparison of PNG and WebP covering compression, transparency, browser support, and when to use each format in 2026.
PNG has been the go-to lossless image format for decades. WebP is the modern challenger with superior compression and equivalent feature support. If you work with images for the web, knowing the differences between these two formats helps you make better decisions about file size, quality, and compatibility.
PNG vs WebP: Side-by-Side Comparison
| Feature | PNG | WebP |
|---|---|---|
| Compression type | Lossless only | Lossy and lossless |
| Transparency (alpha) | Full support | Full support |
| Animation | APNG (limited support) | WebP animation (widely supported) |
| File size vs JPEG | Larger (2–5×) | 25–35% smaller |
| File size vs PNG | Baseline | ~26% smaller (lossless) |
| Browser support | Universal (100%) | 97%+ (all modern browsers) |
| Tooling support | Excellent | Good and improving |
| Metadata support | Yes (EXIF, XMP) | Yes |
| HDR support | No | Partial |
When PNG Wins
PNG remains the better choice in several important scenarios where universal compatibility or maximum tooling support matters.
- Email attachments and documents — some email clients don't render WebP inline
- Design software input — older tools like older Photoshop versions or some print software don't read WebP
- Screenshots and screen recordings — PNG lossless perfectly preserves UI text and lines
- Source files for editing — keep masters as PNG to avoid quality loss on re-export
- When you need guaranteed compatibility in all contexts including legacy systems
When WebP Wins
For any image displayed in a modern web browser, WebP is simply better. It delivers the same visual quality in a smaller file — which translates directly to faster page loads and lower bandwidth costs.
- Website and web app images — logos, product photos, UI illustrations
- Content management systems (WordPress, Shopify, etc.) — most support WebP natively
- Image-heavy landing pages where performance matters
- Mobile web — smaller files save significant data on mobile connections
- Any context where bandwidth and load time matter
The <picture> HTML element lets you serve WebP to browsers that support it and PNG as a fallback for the rare cases that don't. This gives you the best of both worlds.
File Size Comparison: Real-World Numbers
To understand the real-world impact, here's a typical comparison for a 1200 × 800 px logo with transparency:
| Format | File Size | vs PNG | Transparency |
|---|---|---|---|
| PNG (lossless) | 180 KB | Baseline | Yes |
| WebP lossless | 135 KB | 25% smaller | Yes |
| WebP lossy (85%) | 42 KB | 77% smaller | Yes |
| JPEG (no transparency) | 38 KB | 79% smaller | No |
Converting Between PNG and WebP
Converting between these formats is quick and free. Convertly Tools' WebP Converter lets you convert any PNG to WebP (lossy or lossless) or convert WebP back to PNG when you need to edit in older software.
- Open the WebP Converter tool.
- Choose 'Convert TO WebP' to shrink a PNG, or 'Convert FROM WebP' to get a PNG back.
- Upload your file and set quality if converting to WebP.
- Download the result instantly — no upload to any server.
Convert between PNG and WebP instantly — free, private, no account needed.
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