Why multiples of four appear in booklet work
When a sheet is folded into a simple booklet section, its two sides create four page faces. That is why saddle-stitched page planning often works in groups of four.
FREE WEB TOOL
Check whether booklet page count is a multiple of 4.
Check whether a booklet page count is a multiple of four. It is a quick final check for saddle-stitched or other layouts where pages are commonly planned in four-page units.
This checks only the page count. Imposition order, cover handling and whether the printer counts covers separately still depend on the production method.
When a sheet is folded into a simple booklet section, its two sides create four page faces. That is why saddle-stitched page planning often works in groups of four.
A 62-page document can sometimes become 64 pages by adding colophon, notes or blank pages, provided that choice fits the printer’s specification.
A physical booklet page count should be a positive integer. Values such as 62.5 are therefore treated as invalid instead of being silently rounded.
The tool does not decide which page goes on which side of a sheet or whether covers are included. It only checks the total against a four-page unit.
Related references: Paper sizes · DPI, PPI & px · Aspect ratios