Format comparison
PNG vs WebP: Which Format Should You Use?
Both PNG and WebP support transparency, lossless compression, and modern browsers. But they are optimized for different things. Choosing the wrong format for your use case costs you performance, compatibility, or both — here is how to choose correctly.
Quick comparison
| Feature | PNG | WebP |
|---|---|---|
| Transparency (alpha) | ✓ Full support | ✓ Full support |
| Lossless compression | ✓ Yes | ✓ Yes |
| Lossy compression | ✗ No | ✓ Yes |
| File size | Larger baseline | 25–35% smaller |
| Browser support | Universal | Modern only (96%+) |
| Design tool support | Universal | Inconsistent |
| Best for | Editing, design assets | Web delivery |
When to use PNG
- Logos and icons. Flat-color graphics with sharp edges compress extremely well as PNG and are universally compatible with every design tool and platform.
- Screenshots and UI captures. Text in screenshots requires lossless compression to stay crisp — PNG preserves every pixel exactly.
- Platform uploads. Amazon, Shopify, Etsy, Figma, and most SaaS products accept PNG. WebP is sometimes rejected by upload validators.
- Archival and source files. PNG is the best format for master files you'll re-export later. It's lossless, so quality is never degraded across generations.
When to use WebP
- Web page delivery. WebP files are 25–35% smaller than equivalent PNGs. For high-traffic pages, this directly improves Core Web Vitals and hosting costs.
- Hero images and backgrounds. Large decorative images with no transparency needs are ideal WebP candidates — especially with lossy compression.
- Transparent web assets. WebP supports alpha channels with better compression than PNG — useful for transparent overlays and UI elements on modern sites.
WebP transparency — the common misconception
Many developers assume WebP does not support transparency. It does. WebP uses a full 8-bit alpha channel, just like PNG. If you need a transparent image delivered on a modern webpage, WebP is strictly better — same quality, smaller file. The only reason to stick with PNG for transparency is compatibility: older environments, email clients, and some SaaS upload systems may not accept or preview WebP correctly.
The recommended workflow
The most practical approach: create in PNG, deliver in WebP.
Keep your source assets as PNGs for editing and platform uploads. When optimizing images for a website, convert to WebP as the final delivery format. PNGmaker's image converter handles this in one click — no quality settings to tune, no command-line tools required.
Try it with PNGmaker
Use the tool flow directly from this guide. The idea is simple: understand the workflow, then get to the result fast.