Resource · From the production bench
What “print-ready” actually means.
“Print-ready” is the most abused phrase in self-publishing. It is not a compliment a designer pays your file; it is a checklist your file either passes or fails. Here is the checklist, in full — the same one we run before any interior or cover leaves this studio.
A print-ready PDF is a file a printer can put on press with no further work and no surprises. Every item below exists because its absence has, at some point, stopped a press run or ruined a print run. When a formatter tells you a file is print-ready, this is what they should mean.
The checklist
- Correct page size. Every page at the exact trim size — plus 0.125 in bleed on the top, bottom and outside if anything prints to the edge.
- Margins to specification. Inside margin set for the final page count; no live content inside the safe zone.
- Fonts embedded. Every font embedded in the PDF (and licensed for it). A missing font does not produce an error message — it produces a substituted typeface on your printed page.
- Images at 300 dpi. Photographs and artwork at 300 dots per inch at their placed size. A 72 dpi web image stretched across a page prints exactly as blurry as it sounds.
- Color handled deliberately. Interiors in grayscale or CMYK as the printer specifies — not RGB files left for the press software to convert however it likes.
- Page count and spine in agreement. The cover’s spine width is calculated from the final page count and the actual paper. Change the interior by ten pages and the cover must be rebuilt.
- Barcode clean and placed. ISBN barcode at full contrast, in its reserved space, never scaled below legibility.
- Preflight passed. The file run through the target platform’s own checks — KDP, IngramSpark, Lulu or Bookvault — before upload, not after rejection.
Why “it looks fine on my screen” is not a check
Screens forgive everything on this list. A screen does not care about your gutter, your bleed or your color space, and it renders your fonts from your own machine — the one place they are guaranteed to exist. Print forgives none of it. This is why our formatting workflow verifies at the file level: embedded-font reports, image-resolution audits and specification checks, run on every book, including the short ones.
A quick self-test: open your PDF’s document properties and look at the Fonts tab. If any font says anything other than “embedded” or “embedded subset”, your file is not print-ready yet — whatever it looks like on screen.
None of this is glamorous, and all of it is the job. A book that passes this checklist publishes on the day you planned, and reads the way you wrote it. That is the whole promise.
Want this done for you? Tell us about your book.