What does PNG stand for in graphics?

The term PNG stands for "Portable Network Graphics." This format was developed as an answer to the limitations of the GIF format, particularly concerning its licensing issues and lack of support for true color. PNG is designed for use on the internet and supports lossless data compression, allowing for high-quality images without compromising the integrity of the original image. Its ability to handle transparency effectively makes it a popular choice for web graphics, enabling seamless integration onto various backgrounds. Moreover, PNG supports a large range of color depths, accommodating complex images.

The other options listed do not correspond to the actual terminology used in graphics. "Private Network Graphics," "Personal Network Graphics," and "Performance Network Graphics" are not recognized file formats and do not relate to the common standards and practices associated with image file types in the field of multimedia. Hence, the identification of PNG as "Portable Network Graphics" aligns perfectly with its definition and usage in digital media.