PNG vs JPG - Which Image Format Is Better?
A complete comparison of PNG and JPG image formats. Differences in compression, quality, transparency, file size, and best use cases.
PNG vs JPG Comparison
A side-by-side breakdown of both options across the features that matter most.
| Feature | PNG | JPG |
|---|---|---|
| Compression Type | Lossless | Lossy |
| Transparency | Full alpha channel | No |
| Photo Quality | Good but large | Excellent |
| File Size (Photos) | Large | Small |
| Text / Line Art | Crisp | Artifacts |
| Animation | No (use APNG) | No |
| Color Depth | Up to 48-bit | 8-bit per channel |
| Web Support | Universal | Universal |
Best
Moderate
Poor
✓ = best in row
Best For - Summary
PNG
Logos, icons, screenshots with text, and graphics that need transparency or lossless quality.
JPG
Photographs for web and social media where small file size matters and minor loss is acceptable.
When to Use Each
When to use PNG
- Logos, icons, and UI elements that need transparency
- Screenshots containing text or sharp edges
- Line art, diagrams, and charts with flat colors
- Graphics that will be edited repeatedly (lossless)
- Images requiring an alpha channel for compositing
When to use JPG
- Photographs for web pages and social media
- Hero images and background photos where small size matters
- Email attachments and thumbnails
- Print-ready photo previews at high quality
- Any photographic content where minor loss is acceptable
Frequently Asked Questions
Does PNG or JPG have better quality?
PNG uses lossless compression, so it preserves every pixel exactly. JPG uses lossy compression, which discards data that the human eye is less sensitive to. For photographs, JPG at a high quality setting looks visually identical to PNG at a fraction of the file size. For text, line art, or images with sharp transitions, PNG is visibly better because JPG introduces ringing artifacts.
Which format is smaller, PNG or JPG?
For photographic content, JPG is almost always smaller - often 5-10x smaller than an equivalent PNG at acceptable quality. For flat-color graphics, logos, and images with large uniform areas, PNG's lossless deflate compression can actually be smaller than JPG because JPG's block-based DCT adds noise to flat regions.
Can PNG or JPG support transparency?
PNG supports a full 8-bit alpha channel, allowing smooth semi-transparent edges and shadows. Standard JPG does not support any form of transparency; every pixel is fully opaque. If you need transparency, choose PNG (or WebP, which also supports alpha).
Is PNG or JPG better for websites in 2025?
Both are still widely supported, but modern sites increasingly use WebP or AVIF for smaller payloads. As a rule of thumb: use JPG for photos, PNG for graphics that need transparency, and serve WebP or AVIF where the browser supports it for additional savings of 25-50 percent.
Can I convert between PNG and JPG without quality loss?
Converting PNG to JPG always loses information because JPG is lossy. Converting JPG to PNG preserves the current pixels but does not restore data already discarded by JPG - the PNG will simply be larger. For best results, keep an original lossless master and export to the target format as needed.
Why does my JPG have artifacts around text?
JPG divides the image into 8x8 pixel blocks and applies a discrete cosine transform, which creates visible blocking and ringing near sharp edges such as text. PNG uses lossless deflate and has no such artifacts, which is why screenshots and UI mockups should always be PNG.