Convert Pixels to PostScript Points (px to pts)

How to Convert Pixels to PostScript Points?

To convert pixels to PostScript points (often abbreviated as "pts"), you need to know the resolution of the device you are working with. The standard resolution for many devices is 72 pixels per inch (ppi). However, this can vary depending on the specific device or context.

1. Determine the Resolution: Find out the resolution of the device you are working with. This could be, for example, 72 pixels per inch (ppi) or 300 ppi.
2. Calculate Conversion Factor: Divide the resolution by 72 (since there are 72 points in an inch) to get the conversion factor. For example, if the resolution is 72 ppi, the conversion factor is 1; if the resolution is 300 ppi, the conversion factor is approximately 4.17 (300 ÷ 72 ≈ 4.17).
3. Convert Pixels to Points: Multiply the number of pixels by the conversion factor to get the equivalent number of points. For example, if you have 100 pixels and the resolution is 72 ppi, you would multiply 100 by 1 to get 100 points. If the resolution is 300 ppi, you would multiply 100 by 4.17 to get approximately 417 points.

Here's the formula: Points = (Pixels × Resolution) ÷ 72

Remember, PostScript points are a unit of measurement used in printing and typography. They are defined as 1/72 of an inch. So, the conversion essentially scales the pixels to fit within this inch-based measurement system.