Preparing your book correctly before printing is one of the most important steps in the publishing process. Even a beautifully written manuscript can result in poor print quality if the files are not properly prepared. Common issues such as blurry images, incorrect colours, missing fonts, or improper page sizing can delay production and increase printing costs.
Whether you are printing novels, textbooks, company reports, training manuals, children’s books, or catalogues, following a professional pre-press checklist helps ensure your files are ready for commercial printing.
This guide explains everything you should check before submitting your files to a professional book printing company in Singapore.
Table of Contents
- What is Pre-Press?
- Why Print-Ready Files Matter
- Choose the Correct Book Size
- Set Up Bleed and Safe Margins
- Use the Correct Colour Mode
- Check Image Resolution
- Embed or Outline Fonts
- Export a Print-Ready PDF
- Design Your Cover Correctly
- Review Every Page Carefully
- Common Pre-Press Mistakes
- Final Pre-Press Checklist
- Frequently Asked Questions
- Final Thoughts
What is Pre-Press?
Pre-press refers to all the preparation work completed before your files are sent to the printing press.
This stage includes:
- Checking page size
- Reviewing artwork
- Inspecting images
- Verifying colours
- Confirming fonts
- Preparing print-ready PDF files
- Checking page order
- Reviewing bleed and margins
A properly prepared file helps avoid costly printing errors and production delays.
Why Print-Ready Files Matter
Professional printing machines reproduce exactly what is supplied.
If your file contains mistakes, they will usually appear in the printed book.
Proper preparation ensures:
- Sharp images
- Accurate colours
- Correct page alignment
- Clean trimming
- Professional appearance
- Faster production
- Lower risk of reprinting
Spending extra time reviewing your files can save both time and money.
Choose the Correct Book Size
Your document should be created using the final trim size.
Popular book sizes include:
| Book Size | Dimensions |
|---|---|
| A5 | 148 × 210 mm |
| A4 | 210 × 297 mm |
| B5 | 176 × 250 mm |
| Square | 210 × 210 mm |
| Custom | Based on project requirements |
Avoid designing on one page size and resizing later, as this can affect image quality and page layout.
Set Up Bleed and Safe Margins
Bleed is the extra artwork that extends beyond the trim edge of the page.
Most commercial printers recommend:
- 3 mm bleed on all sides
Without bleed, tiny white edges may appear after trimming.
Safe Margin
Keep important content away from the trim edge.
This includes:
- Text
- Logos
- Page numbers
- Important illustrations
A safe margin of at least 10 mm helps prevent accidental trimming.
Use the Correct Colour Mode
Professional printing uses CMYK, while most digital screens display colours in RGB.
Always design your files in CMYK before exporting.
Benefits include:
- More accurate printed colours
- Better colour consistency
- Fewer unexpected colour shifts
Converting RGB files at the last minute may produce different colours than expected.
Check Image Resolution
Low-resolution images often appear blurry or pixelated after printing.
Recommended resolution:
- Minimum 300 DPI
Avoid:
- Images copied from websites
- Screenshots
- Social media photos
- Low-quality downloads
High-resolution images produce sharper and more professional results.
Embed or Outline Fonts
Missing fonts can change your entire document layout.
Before submitting:
- Embed all fonts when exporting your PDF.
- Alternatively, convert fonts to outlines if required by your printer.
This ensures your document appears exactly as designed.
Export a Print-Ready PDF
PDF is the preferred format for commercial printing.
When exporting:
- Use high-quality print settings.
- Include bleed.
- Embed fonts.
- Preserve image quality.
- Do not downsample images unnecessarily.
Avoid submitting editable Word, PowerPoint, or Publisher files unless specifically requested.
Design Your Cover Correctly
Book covers require separate preparation from the inside pages.
Your cover should include:
- Front cover
- Back cover
- Spine
- Bleed
- Safe margins
The spine width depends on:
- Number of pages
- Paper thickness
- Binding method
Always confirm the exact spine measurement with your printing company before finalising your artwork.
Review Every Page Carefully
Before sending your files, perform a thorough review.
Check for:
- Spelling mistakes
- Grammar errors
- Missing pages
- Incorrect page numbers
- Blank pages
- Cropped images
- Misaligned text
- Consistent spacing
Reading through your book one final time helps catch errors that are easily overlooked.
Common Pre-Press Mistakes
Many first-time authors encounter avoidable problems.
Common mistakes include:
- Using RGB instead of CMYK
- Forgetting bleed
- Images below 300 DPI
- Missing fonts
- Incorrect page size
- Text too close to the edge
- Wrong page order
- Low-quality logos
- Incorrect spine width
- Exporting low-resolution PDFs
Avoiding these mistakes results in a smoother production process.
Final Pre-Press Checklist
Before submitting your files, confirm the following:
- Final trim size is correct.
- Bleed has been added.
- Safe margins are observed.
- Images are at least 300 DPI.
- Colours are in CMYK.
- Fonts are embedded or outlined.
- PDF has been exported using print-quality settings.
- Cover includes the correct spine width.
- Page numbers are correct.
- Spelling and grammar have been checked.
- All pages are present and in the correct order.
- A final proof has been reviewed.
Completing this checklist significantly reduces the risk of printing errors.
Frequently Asked Questions
Why do printers ask for PDF files?
PDF files preserve the layout, fonts, images, and formatting, ensuring the printed book matches the original design.
What happens if I forget to add bleed?
Without bleed, small white borders may appear around the edges after trimming, affecting the professional appearance of the book.
Can I use RGB images?
RGB images can be converted, but colours may shift during the printing process. Designing in CMYK from the beginning provides more predictable results.
Why is 300 DPI recommended?
Images printed at 300 DPI produce sharp, clear results suitable for professional commercial printing.
Can the printer check my files before printing?
Many professional book printing companies provide a pre-press review and may identify technical issues before production begins. However, authors remain responsible for proofreading the content and confirming that all information is correct.
Final Thoughts
Proper pre-press preparation is the foundation of a successful book printing project. By ensuring your files have the correct page size, bleed, colour settings, image resolution, fonts, and print-ready PDF format, you can minimise production delays and avoid costly mistakes. Taking the time to perform a thorough final review also helps eliminate typographical errors and layout issues before your book reaches the printing press.
Whether you are printing novels, children’s books, company reports, educational materials, or product catalogues, following a comprehensive pre-press checklist gives you confidence that your files are ready for commercial production. Working closely with an experienced book printing company and preparing your artwork correctly will help ensure your finished books look professional, meet industry standards, and leave a lasting impression on your readers.