PDF Specifications & Recommendations



Follow these PDF specifications to ensure your digital publication looks as good as the PDF you uploaded:

File Details

  • Maximum PDF file-size of 300MB 
  • PDF is not "secured"
  • PDF is a .pdf file

Page sizing

  • Pages cropped to size, no visible cutting lines (apply equal margins to CropBox and TrimBox)
  • Consistent page size & dimensions
  • If spreads are used, each page must be the same size

Stretching Copy 2

Images & Colours

  • Minimum resolution of 180 DPI (considering pages are at least A4 or Letter size)
  • RGB color encoding
  • No hidden layers (e.g. No old text layers with other objects placed above)
  • Avoid complex vector images, they can cause PDF conversion to fail


  • Embed all fonts in the PDF
  • Text should be intact & vector
  • No outlines or bitmaps. (You should be able to highlight & copy the text on the PDF file)