Files & prepress
What is bleed?
Bleed is artwork extended past the final trim line — typically an eighth of an inch or more in signage — so that cutting tolerance never leaves an unprinted sliver at the edge.
No cutter hits the line perfectly every time. If the art stops exactly at the trim, half the cuts will show a hairline of white substrate. Extending the background past the trim means the tolerance falls inside printed area instead.
Large-format bleeds run bigger than print-shop convention — a quarter inch or more on rigid signs, and banners with hems often want an inch or two so the fold wraps printed material. The companion rule is the safe area: keep text the same distance inside the trim that the bleed extends outside it.
Related terms
Software that speaks the trade
PrinterFlo runs print & sign shops on one board — quotes that price by size and material, proofs approved from one link, and a production checklist the quote writes for you.