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Prepress
LPI cheatsheet by fabric
LPI (lines per inch) controls how many halftone dots pack into an inch of print. Higher LPI = more detail but softer edges; lower LPI = punchier but chunkier.
Suggested defaults by fabric
Fabric
LPI
Angle
100% cotton
32
22.5°
50/50 poly-cotton
28
22.5°
Tri-blend
22
30°
Waffle knit
18
45°
Ringspun combed
40
22.5°
100% polyester
35
22.5°
Fleece / hoodies
20
30°
Tips
• If your print is losing detail, bump LPI up 5-10.
• If you see moiré (weird interference patterns), change the angle by 15°.
• For gradient-heavy artwork try FM stochastic — it has no fixed grid so moiré disappears.
Ready to try it?
Open the Halftone Studio and put this into practice — 3 free exports this month.
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