.png — Portable Network Graphics
PNG Development Group · 1996
PNG (Portable Network Graphics) is a lossless image format designed as an improved, non-patented replacement for GIF.
Key Features
- Lossless storage behavior for typical image workflows
- Common MIME type: image/png
- Recognizable file signature: 89 50 4E 47 (‰PNG)
- Associated with PNG Development Group
Best For
- Transparency support
- Sharp text and graphics
- Repeated saves without quality loss
Less Ideal For
- Very large photo libraries where size matters most
- Long-form video or audio workflows
- Executable packaging
Common Use Cases
- Logos and UI graphics
- Screenshots
- Images requiring transparency
How to Open It
- On Windows, open the file with Windows Photos or Adobe Photoshop.
- On macOS, open the file with Preview or Adobe Photoshop.
- If the file does not open, confirm that the extension really matches .png and that the download or transfer completed without corruption.
What is a .png file?
PNG (Portable Network Graphics) is a lossless image format designed as an improved, non-patented replacement for GIF. It supports full-color images with transparency (alpha channel), making it perfect for logos, icons, screenshots, and web graphics. Unlike JPEG, PNG preserves every pixel exactly, so images never lose quality when saved multiple times. The tradeoff is larger file sizes compared to JPEG for photographs.
Programs That Open .png Files
| Platform | Program | ||
|---|---|---|---|
| Windows | Windows Photos | Free | |
| Adobe Photoshop | Paid | ||
| GIMP | Free | ||
| Paint.NET | Free | ||
| macOS | Preview | Free | |
| Adobe Photoshop | Paid |
Common Problems with .png Files
Frequently Asked Questions
.png files can be opened with several programs. Windows Photos is one of the most popular choices.
Generally yes, .png files are safe to open with appropriate software.
Yes, there are many online and offline tools available to convert .png files. Check the conversion section above for specific methods.
Technical Details
Portable Network Graphics files use the image/png MIME type and were first introduced in 1996 by PNG Development Group. The file can be identified by its signature: 89 50 4E 47 (‰PNG).