What is a 720px resolution
A 720px resolution refers to an image or display resolution width of 720 pixels. Resolution, in the context of digital imagery and screens, is defined as the number of pixels (short for picture elements) displayed horizontally and vertically, which together determine the overall clarity and detail of the image.
When mentioning just "720px resolution," it's important to note that typically resolutions are described with both width and height, often separated by an "x" (e.g., "1280x720"). Without specifying the height, the term is incomplete; however, based on common usage, if someone says "720px resolution," they might be informally referring to a resolution with 720 pixels in height, most likely in the context of video or screen displays.
A common resolution associated with 720 pixels is "720p," which stands for HD (High Definition) resolution with 1280 pixels in width and 720 pixels in height. The "p" denotes progressive scanning, meaning the lines of the image are drawn in sequence. Therefore, a "720p" resolution provides a display resolution of 1280x720 pixels, suitable for high-definition content but not as sharp as Full HD (1080p) or Ultra HD (4K).
In summary, while "720px resolution" alone is ambiguous, it's likely being used to casually refer to a vertical resolution of 720 pixels, commonly seen in the context of 720p HD video or display standards.