--- type: faq-hub title: "Proofs" description: "Proof FAQ: red line proofs, digital versus hard copy proofs, what a physical proof shows and how approval works." resource: https://www.4over4.com/faqs/proofs tags: ["faq-hub"] generated: by: "process:4over4-mapp-build" at: 2026-10-20T21:15:07.573Z timestamp: 2026-10-20T21:15:07.573Z sources: - resource: https://www.4over4.com/faqs/proofs title: "Proofs" status: stable --- # Proofs Proof FAQ: red line proofs, digital versus hard copy proofs, what a physical proof shows and how approval works. 9 answers about proofs. - [What does a physical proof show?](https://www.4over4.com/faqs/proofs/what-does-a-physical-proof-show) - [RGB vs. CMYK? Understanding the 2 is critical.](https://www.4over4.com/faqs/proofs/rgb-vs--cmyk-understanding-the-2-is-critical-) - [What is SWOP?](https://www.4over4.com/faqs/proofs/what-is-swop) - [What is the difference between a proof and print-ready files?](https://www.4over4.com/faqs/proofs/what-is-the-difference-between-a-proof-and-print-ready-files) - [How do I read fold lines on trifold brochure proofs?](https://www.4over4.com/faqs/proofs/how-do-i-read-fold-lines-on-trifold-brochure-proofs) - [What are hard copy proofs and when would I need them for a custom project?](https://www.4over4.com/faqs/proofs/what-are-hard-copy-proofs-and-when-would-i-need-them-for-a-custom-project) - [What is the difference between a sample and a hard copy proof?](https://www.4over4.com/faqs/proofs/what-is-the-difference-between-a-sample-and-a-hard-copy-proof) - [Should I purchase a proof round before finalizing my print order?](https://www.4over4.com/faqs/proofs/should-i-purchase-a-proof-round-before-finalizing-my-print-order) - [What are fold lines in proofs and will they print on my final order?](https://www.4over4.com/faqs/proofs/what-are-fold-lines-in-proofs-and-will-they-print-on-my-final-order) ## Didn't find your answer? Our team replies within 24 hours. [Submit a ticket](https://www.4over4.com/company/contact)