How to fix "spine text not allowed" on a thin book
Updated October 28, 2026 · Amazon KDP · IngramSpark
Thin books have thin spines, and printers won't print words on a spine that's too narrow to hold them.
The error: “Spine text is not allowed for books under the minimum page count”
Spine text is not allowed for books under the minimum page count
Paraphrased. Each printer words this a little differently.
Quick fix: SparkPrep scans your cover and interior against the exact platform rules, pinpoints the issue, and fixes it for you with one click.
Why you get “Spine text is not allowed for books under the minimum page count”
A spine is only as wide as your pages are thick. On a thin book, the spine might be a few millimeters wide. The printer's fold can shift a tiny bit, so words on a very thin spine can wrap onto the front or back cover.
That's why printers set a minimum: Amazon KDP only allows spine text on books with more than 79 pages, and IngramSpark doesn't allow spine text on paperbacks under 48 pages. If your book is under the line and the spine has words on it, the cover is rejected.
How to fix “Spine text is not allowed for books under the minimum page count” manually (the hard way)
If you want to try adjusting the files yourself, here are the steps you need to follow:
- Open your original cover file.
- Check your final page count against the rule: more than 79 pages for KDP, at least 48 for IngramSpark paperbacks.
- If you're under it, delete the title, author name and any logo from the spine. Keep just the background color or art there.
- Re-export as PDF/X-1a:2001 with the bleed included.
- Re-upload it to your printer and wait for the file review again. If it fails, you start over.
You can fix this by hand with the steps above. Or drop your file into SparkPrep and let it find the problem and fix it for you, in minutes. Try it on your file.
How to fix it instantly (the SparkPrep way)
If you don't have expensive design software, or you just want to get your book published without the headache, let SparkPrep handle it.
SparkPrep was built by a self-published author whose own book was rejected 18 times. It checks your files against the exact print rules Amazon KDP, IngramSpark, Barnes & Noble Press and Lulu publish.
When you upload your file to SparkPrep:
- We automatically scan for page size, bleed, spine width, safety margins, ink coverage and embedded fonts.
- We explain any hidden errors in plain English.
- We fix what can be fixed automatically, tell you exactly what's left, and export a print-ready PDF/X-1a, checked again before you download it.
Stop fighting the bots. Drop your file into SparkPrep today and get back to marketing your book!
Check my spineWhat it costs to get this fixed
| Hire a professional cover designer | SparkPrep | |
|---|---|---|
| Price | About $930 | One price per book for the cover, the inside pages, or both |
| Time | Book a freelancer, wait for their schedule, then go back and forth on changes | Upload and get your fixed, print-ready files in minutes |
| Printer check | Depends on the freelancer | Checked against your printer's own rules, every time |
Freelancer prices are Reedsy's own published figures (source). A great designer is worth it for original artwork. If you just need your files right for the printer, you don't need to pay designer prices.
Quick answers
How many pages do you need for spine text on KDP?
Amazon KDP allows spine text only on books with more than 79 pages.
How many pages do you need for spine text on IngramSpark?
IngramSpark doesn't allow spine text on paperback covers under 48 pages.
More guides
- How to fix "cover contains template elements"
- How to fix "jacket layout not built to the correct specifications"
- How to fix "cover dimensions are incorrect"
- How to fix cover text that's too close to the edge
- All guides
SparkPrep is an independent tool and is not affiliated with Amazon KDP, IngramSpark, Barnes & Noble Press or Lulu.