Why Does IngramSpark Reject Ebooks?

1. Interior or cover PDF not in PDF/X-1a format

IngramSpark requires both the interior PDF and the cover PDF to be in PDF/X-1a format — a prepress standard designed for consistent commercial print reproduction. Standard PDF, PDF/X-3, and PDF/X-4 are rejected at intake. PDF/X-1a requires CMYK or grayscale color (no RGB or ICC-based color profiles), embedded fonts (no font substitution), and no transparency. Most consumer PDF export tools — Canva, Google Docs, unoptimized InDesign exports — produce standard PDFs that fail this requirement without any visible error in the file itself.

2. Cover bleed not set or set incorrectly

IngramSpark requires 0.125 inches of bleed on all four sides of the cover PDF — a printing margin that allows the press to cut to trim size without leaving white edges. A cover exported at exact trim size with no bleed, or with bleed on only some sides, is rejected before it reaches the printer. Canva and most consumer design tools produce covers at trim size with no bleed option, which is the primary reason first-time IngramSpark authors have their cover rejected while an identical cover file passes KDP's cover upload without issue.

3. Spine width mismatch between cover PDF and page count

The spine width of the cover PDF must precisely match IngramSpark's calculation for your title's page count on your chosen paper stock. IngramSpark provides a cover template generator that outputs the exact spine width — but authors who design their cover early in the production process and revise the interior manuscript afterward end up with a cover built for the wrong page count. Even a difference of a few pages shifts the spine width enough to trigger a rejection, and Ingram cross-checks the submitted cover's spine dimensions against the interior page count on file.

4. Fonts not embedded in the interior PDF

All fonts in the interior PDF must be fully embedded before submission. IngramSpark's print pipeline cannot substitute or download fonts at processing time — an unembedded font causes a processing failure that blocks both printing and wholesale distribution. This is most common in PDFs exported from word processors (Word, LibreOffice) without the embed-fonts option enabled, or from design software with subsetting settings that exclude some character ranges from the embedded font data.

5. ISBN barcode missing, misplaced, or not matching the registered ISBN

IngramSpark requires the ISBN-13 barcode on the back cover of the printed book, placed in the lower right quadrant at 100% scale. The number in the barcode must exactly match the ISBN registered with IngramSpark for that title. Barcodes generated from a different ISBN, resized disproportionately, placed in a non-standard position, or printed at too small a scale for scanner readability are all rejected. Ingram also cross-references the barcode against the ISBN in their system — a cover with an ISBN registered to a different title or edition fails this cross-check.

6. Ebook distribution failures via the CoreSource pipeline

IngramSpark distributes ebooks through CoreSource, which delivers to Apple Books, Kobo, Barnes & Noble, and other retail partners. A validation failure that IngramSpark's own intake passes can still cause a rejection at the CoreSource or destination-platform level, reported back through IngramSpark's dashboard with limited diagnostic detail. Apple Books' EPUBCheck strictness, Kobo's KEPUB conversion requirements, and retailer-specific metadata checks all apply to IngramSpark-distributed EPUBs — but the error message you receive from IngramSpark may not specify which downstream check failed or at which retailer.

Does IngramSpark accept the same EPUB format as KDP and Apple Books?

IngramSpark accepts EPUB 2 and EPUB 3 for ebook distribution. The EPUB passes through IngramSpark's intake validation, then through the CoreSource pipeline to destination retailers. An EPUB that passes EPUBCheck should meet IngramSpark's ebook intake requirements, though destination-platform failures at Apple Books or Kobo may be reported back with limited diagnostic detail.

How do I calculate the correct spine width for my cover?

Use IngramSpark's cover template generator, which calculates spine width from your exact page count and paper stock selection (white 60lb, white 80lb, cream 60lb, or color interior). Generate a fresh template after you finalize your page count — adding or removing pages changes the spine width calculation and invalidates an earlier template's dimensions.

Is IngramSpark's content policy more or less restrictive than KDP's?

IngramSpark's retail content policies are broadly comparable to KDP's for ebook distribution. For library channel distribution through OverDrive (which Ingram supplies), content is subject to OverDrive's additional standards — explicit sexual content that passes IngramSpark's retail channel may be filtered at the OverDrive library gate separately.