PNG File

What is a PNG file?

A PNG file is a raster image format known for lossless compression and support for transparency. PNG is great for screenshots, logos, UI graphics, and images that need crisp edges without JPEG-style artifacts.

Common uses

• Screenshots and screen recordings (image frames)
• Logos and icons with transparent backgrounds
• Web graphics and UI elements
• Images that need sharp text/lines
• Intermediate editing format before export

How to open a PNG file

• Windows: Photos app, Paint, browsers
• macOS: Preview, Photos, browsers
• Mobile: Built-in gallery/photos apps
• Edit: Photoshop, GIMP, Affinity Photo, Canva (varies)

Common problems

• Large file size for photos compared to JPEG
• Color profile issues (looks different between apps)
• Transparency appears as a checkerboard in editors (normal)
• Corruption from incomplete downloads
• Not ideal for high-compression photo sharing

History

PNG was created in the 1990s as a patent-free alternative to GIF, with better color support and lossless compression. It became a web standard for images that need transparency and sharp edges, and it remains common across websites and apps.