PNG, or Portable Network Graphics, is a popular image file format widely used on the internet. It was developed as an improved, non-patented replacement for GIF. PNG supports lossless data compression, meaning images retain their original quality without losing detail during compression. One of its key features is support for transparent backgrounds, making it ideal for web graphics and overlays. Unlike JPEG, which is better for photographs due to its lossy compression, PNG is preferred for images with sharp edges, text, or when transparency is required. While PNG files can be larger than JPEGs, their quality and versatility make them a standard choice in digital design and cybersecurity contexts, where image integrity is crucial.