The quiet zone is part of the symbol
Four light modules on every side, unless you deliberately shrink it.
ReadGuides
Quiet zone, contrast, distance, poster placement, and a measured symbol.
Contrast is a ratio, not a vibe
Below 4:1 is flagged. The flag is not a scan.
ReadSize against scanning distance
A rule of thumb: width at least distance divided by ten.
ReadPlacement on a poster
Edges, headlines, and the trim.
ReadHow to run the print test
Several real sizes, then a phone, then a note of what failed.
ReadWorked example: one URL, version 4, 32.8 mm
Inputs, module count, and assumptions.
ReadStart with the worked example if you want the inputs and the result without using the tool.