How Do I Create a Print-Ready PDF?
TL;DR:A print-ready PDF must embed all fonts, use the correct page dimensions for your trim size (with bleed if applicable), have a minimum resolution of 300 DPI for images, and conform to PDF/X standards. Both KDP and IngramSpark provide specific guidelines and will flag common errors during upload.
Creating a print-ready PDF is the final step before your book can be printed. Both KDP and IngramSpark have strict file requirements, and errors at this stage can lead to rejected uploads or poor print quality.
Font embedding is critical. Every font used in your book must be embedded in the PDF. If not, the printer will substitute fonts, which can break your layout. Most professional tools (InDesign, Affinity Publisher, Vellum) handle this automatically, but always double-check if exporting from Word.
Your page size must match your trim size exactly. For example:
- No bleed (6"×9"): PDF pages must be exactly 6"×9"
- With bleed: PDF pages must be 6.25"×9.25"
Both KDP and IngramSpark provide templates to ensure your dimensions and margins are correct.
Image resolution should be at least 300 DPI. Lower-resolution images (like 72 DPI web images) will appear blurry in print. For best results:
- Photos and illustrations: 300 DPI minimum
- Line art and text-based graphics: 600 DPI preferred
Export format matters. PDF/X-1a or PDF/X-3 are preferred for print because they preserve color accuracy and layout integrity. Standard PDFs usually work, but print-specific formats reduce the risk of issues.
Use CMYK color for print. RGB colors (used for screens) will be converted during printing, which can cause color shifts. Designing in CMYK helps ensure more predictable results.
Always review your proof carefully. KDP and IngramSpark run automated checks for technical errors, but they will not catch layout issues like spacing problems, missing content, or visual inconsistencies. Use their preview tools to inspect every page before approval.
Sources: