Choosing Physical Pixel Size for Laser Vectorization
Physical pixel size specifies how many millimeters each processed image pixel occupies in the exported SVG or LightBurn project. The approximate project width is the processing width in pixels multiplied by the physical pixel size in millimeters, and the same calculation determines the project height. For example, 800 pixels multiplied by 0.125 mm produces a project approximately 100 mm wide.
Smaller pixels
With processing dimensions held constant, a smaller physical pixel size scales the same vector geometry into a smaller physical area without increasing object count or adding source detail.
Larger pixels
With processing dimensions held constant, a larger physical pixel size scales the same vector geometry across a larger physical area without changing its object count. Larger physical pixels can make individual features more substantial and easier to reproduce, but spreading the same processing resolution across a larger area can make boundaries and pixel-scale structure appear coarser.
Practical workflow
Begin with a modest processing dimension, calculate the physical pixel size needed for the intended project dimensions, and increase the processing resolution only when missing detail matters.