PNG vs JPG: Which Image Format Should You Use? Complete Guide
Learn the difference between PNG and JPG formats. When to use each, quality comparison, file size differences, and how to convert between them.
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PNG and JPG are the two most common image formats on the web, but they're designed for completely different purposes. Choosing the wrong one can mean bloated file sizes or poor image quality.
The Quick Answer
- Use JPG for: Photos, complex images with many colors, images where small file size matters
- Use PNG for: Screenshots, logos, graphics with text, images that need transparency
Detailed Comparison
| Feature | JPG | PNG |
|---|---|---|
| Compression | Lossy (some quality lost) | Lossless (no quality lost) |
| File Size | Smaller (great for web) | Larger (more data preserved) |
| Transparency | Not supported | Fully supported (alpha channel) |
| Best For | Photographs | Graphics, screenshots, logos |
| Color Depth | 16.7 million colors | 16.7 million + alpha |
| Animation | Not supported | APNG supports animation |
When JPG Wins
JPG excels at compressing photographs because its lossy compression algorithm is optimized for the gradual color transitions found in real-world images. A typical photo that's 5 MB as PNG might be only 500 KB as JPG with barely noticeable quality difference.
- Product photos for e-commerce
- Blog post images and thumbnails
- Social media uploads
- Email attachments
- Any image where transparency isn't needed
When PNG Wins
PNG's lossless compression means every pixel is preserved exactly. This makes it essential for:
- Logos and brand assets (sharp edges matter)
- Screenshots (text must be crisp)
- UI elements with transparency
- Graphics with text overlays
- Images that will be edited further
What About WebP?
WebP is a modern format from Google that offers both lossy and lossless compression, with file sizes 25-35% smaller than equivalent JPGs. It also supports transparency. The main limitation is older browser support, though as of 2026, all modern browsers support it.
How to Convert Between Formats
Use BriskTool's free Image Converter to convert between JPG, PNG, WebP, and other formats instantly in your browser - no upload required.