---
type: help
title: "What do the red and blue lines mean on my proof?"
description: "The colored lines on your proof are trim and safety guides that help you keep important content from being cut. They do not print on the finished piece. Re"
resource: https://www.4over4.com/help/proofs/what-do-the-red-and-blue-lines-mean-on-my-proof
tags: ["Files & Artwork", "help"]
timestamp: 2026-07-20T18:54:40.856Z
---

# What do the red and blue lines mean on my proof?

The colored lines on your proof are trim and safety guides that help you keep important content from being cut. They do not print on the finished piece. Re

Part of the **Files & Artwork** hub. See [all help concepts](index.md).

- Page type: help
- Hub: Files & Artwork
- URL: https://www.4over4.com/help/proofs/what-do-the-red-and-blue-lines-mean-on-my-proof