Pre-press is the most important stage before the printing process. Please check this page to avoid mistakes in the file preparation process, to choose an appropriate colour profile and to gather some other very useful pre-press information.

  • Size of all pages must be equal according to order - if book is ordered in size of 210x297, then this size must be defined in document properties.
  • File should be prepared with crop marks (this can be applied automatically just before exporting file to PDF).
  • Bleed size for every document must be applied: contents, soft covers and endpapers – 3mm, hard covers – 18mm.
  • Correct color space must be applied. CMYK, or Grayscale is acceptable. Files must be prepared according to ISO12647-2:2013 standard, OutputIntent information must be provided in PDF file or corresponding inforrmation about color profile used must be attached to PDF file. ICC profiles can be downloaded on our website.
  • All spot colours should be converted to CMYK, if not intended to be printed as separate Pantone colours. RGB or Lab colours are not allowed in offset printing.
  • 100% black must be applied for Foil, UV spot, Embossing files. Objects of these files must be converted to outlines.
  • Every part of the book should be saved as separate files: separate content file, cover file, endpapers, foil, UV spot etc.
  • Contents should be saved as single PDF file containing all pages First -> Last in correct sequence. PDF file can be divided in one, or more parts, if PDF file exceeds more than 2Gb. Files must be named according to sequence, like: “book_001-120.pdf”, “book_121-248.pdf”, etc.
  • Text, numbers and important design objects of file should not be placed closer than 3 mm to page edges.
  • To prevent too high ink coverage, correct ICC profiles must be applied according to selected paper
  • Correct resolution of colour pictures is 300 dpi, for bitmap files 600 dpi.
  • All fonts have to be embedded.
  • If endpapers are ordered as selfends, endpapers should be included in content file.
  • Blank pages have to be included in the content file.
  • Fine black objects (texts, lines, tables) should be 100% black. RGB or Registration colour is not allowed for offset printing.
  • Line width should not be less than 0,2 pt.
  • All 100% of black objects (text and vectors) overprint will be applied automatically in file ripping process.
  • Do not to use white objects in overprint mode and don't play with object overprint settings as long as it's really necessary.
  • Do not use JPEG2000 compression.
Last update: 2018.05.21.


To export created layout to PDF correctly, in InDesign choose File -> Adobe PDF Presets -> PDF/X-4

GENERAL All settings can be left as default


COMPRESSION All settings can be left as default


MARKS AND BLEEDS Check Boxes for Crop marks and Page Information must be checked. Offset must be applied 5 mm. Check Box must be checked for document bleeds. If document has a bleed size defined, it will appear automatically in bleed section in gray. Bleed size must be at least 3 mm for content pages and 18 mm for hard cover file.


OUTPUT Color conversion: Convert to destination (Preserve Numbers), Destination: .icc profile according to selected paper (see Downloads section).

Last update: 2017.07.07.

Instead of hard-copy printouts of the PDF's, faster and easier method is to check pageproofs (softproofs).

All received files are checked by our prepress department and adjusted to our technical conditions to run a print. Then we generate pageproof PDF file which basically shows what and how book contents will be printed. This file is always sent to the client and is a mandatory confirmation step before we begin the production.

To see the content of PDF’s correctly, you must always use latest version of Adobe Acrobat or Acrobat Reader, which is possible to download and install free of charge for almost any platform.

Using latest Acrobat/Acrobat Reader version is the only way to be sure you see all texts, objects, bleeds, overprints, extracted or added hidden and unnecessary objects, possible glitches. And to see all of them the way it will be printed.

Overprint preview. You must always check pageproofs with overprint preview set on. In Acrobat choose Edit → Preferences → General. On the left part of dialog window look for Page Display and then set Use Overprint Display to Always. This will help to visually catch typical overprint problems and also check trapping of the objects.
You can use Overprint Checkup PDF file to test overprint settings of your PDF viewer. Please do not check files in web browser or on your mobile devices. Mobile device rendering engines and built-in browser PDF viewers does not support overprint preview.
As a double-check we have created a special control mark that appear in the files we send for approval. 

View contents in spreads. To see pageproof file as an opened book (as spreads), you must change View settings in Acrobat. Choose View → Page Display → Two Page View and also set View → Page Display → Show Cover Page in Two Page View.

Low resolution of images. By default we are downsampling all images to 72 dpi in pageproof files to save bandwidth and transfer time, but it’s always possible to provide a hi-res pageproof file on demand.

Last update: 2019.02.18.

Images showing the endpapers as spreads in files and how the same files look glued as endpapers in a book.

Standart endpapers
Standard endpapers

Endpapers with flaps


ICC profiles

PSO Coated v3 by ECI (FOGRA51) for coated paper
PSO Uncoated v3 by ECI (FOGRA52) for uncoated paper

How to install a color profile

• In Windows, right-click a profile and select Install Profile. Alternatively, copy the profiles into the WINDOWS\system32\spool\drivers\color folder.

• In Mac OS, copy profiles into the /Library/ColorSync/Profiles folder or the /Users/[username]/Library/ColorSync/Profiles folder.

After installing color profiles, be sure to restart Adobe applications.

Last update: 2017.06.22.


ISBN barcode generator

Enter ISBN code to create a print-ready vector barcode in PDF format. You can use spaces, dashes or any other symbols as separators for 13-digit code. Dashes according to ISO standard will be added automatically. Font is embeded in PDF file.

ISBN code
Create PDF


Please test the barcode to make sure it works before you prepare layouts for printing. There are many smartphone apps that read barcodes and you can scan the barcode directly from computer screen.
Last update: 2016.07.28.