Print-Ready Files · Topic 1 of 3
Interior Print-Ready PDF Requirements
What to do
Understand the specific technical requirements a print-ready interior PDF must meet, separate from how your book looks on screen, page size, embedded fonts, image resolution, correct bleed setup, and no stray blank pages.
Why it matters
Your interior can look perfect in your word processor and still fail at the printer if the exported PDF doesn't meet print specs. Printers read the PDF file directly, not your original document, so anything not properly "baked into" the PDF (like fonts) or sized to the file (like page dimensions) can cause the printed book to look wrong even though your source file looked fine.
Steps for your program
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Common mistakes to avoid
- Exporting at a page size close to, but not exactly matching, your chosen trim size, small rounding differences between your word processor's units and the exported PDF can slip in.
- Not checking the "embed fonts" option during export (or not realizing the option exists), so the PDF relies on font substitution, text can shift, wrap differently, or use the wrong glyphs for accented characters or symbols.
- Not noticing a low-resolution image until the printed proof arrives blurry, always zoom into image-heavy pages in the exported PDF at 100% or higher to check sharpness before finalizing.
- Judging an image's resolution by how sharp it looks on your screen, screens and print use completely different sharpness standards, a screen-crisp image can still be too low-DPI to print well, always do the pixel-math check (or check Effective PPI in InDesign) instead of eyeballing it.
- Exporting a bleed-inclusive layout with a "crop to trim" or default page-size export setting, which strips the bleed area back out of the final PDF without you noticing.
- Not scrolling through the whole exported PDF and missing a stray blank page between chapters, or an unwanted blank page at the very end, both are extremely common and easy to catch with a quick page-by-page scroll.
Completion checklist
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Troubleshooting
How do I check if my fonts are actually embedded?
Most PDF viewers let you check document properties/fonts (for example, in Adobe Acrobat: File > Properties > Fonts tab), every font listed should say "Embedded" or "Embedded Subset," not just show a font name with no embedding status. If any font is missing that label, go back to your export settings and enable font embedding, then re-export.
I found a blank page between two chapters in my exported PDF, how do I fix it?
Go back to your source document, turn on formatting marks, and look right where that chapter break is, you likely have an extra page break or a lingering blank paragraph before the intended page break. Delete the extra blank content, re-check the page count, and re-export.
My exported PDF is missing the bleed area I set up.
Check your export dialog for a page-size or crop option, many programs default to exporting at the trim size only, discarding bleed unless you explicitly choose an option like "include bleed" or "use document bleed settings." Re-export with that option enabled and re-check the file's actual page dimensions afterward.