VBScript Requires Chilkat v11.7.0+

Tile a Watermark Across a PDF Page

See more PDF Watermark Examples

Demonstrates a tiled watermark, which repeats the stamp over the whole page instead of placing it once. Tiling overrides position.align; tile.spacingX and spacingY set the gaps, and tile.stagger offsets alternate rows by half a tile so the pattern does not line up in columns. A faint tiled stamp carrying the name or address is the usual way to mark a document so that a leaked copy can be traced back, and zOrder back keeps it behind the text where it does not hinder reading. VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

'  This example requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

'  The PDF used in this example is available at long_report.pdf

set pdf = CreateObject("Chilkat.Pdf")
success = pdf.LoadFile("qa_data/pdf/long_report.pdf")
If (success = 0) Then
    outFile.WriteLine(pdf.LastErrorText)
    WScript.Quit
End If

set json = CreateObject("Chilkat.JsonObject")
success = json.UpdateString("type","text")

'  {date:FORMAT} is replaced per page when the watermark is added.  The other placeholders are
'  {page}, {pages} and {filename}; {{ gives a literal brace.
success = json.UpdateString("text","jdoe@example.com  {date:yyyy-MM-dd}")
success = json.UpdateString("id","trace")
success = json.UpdateString("zOrder","back")
success = json.UpdateNumber("font.size","14")
success = json.UpdateNumber("opacity","0.15")
success = json.UpdateNumber("rotation","30")

success = json.UpdateBool("tile.enabled",1)
success = json.UpdateNumber("tile.spacingX","60")
success = json.UpdateNumber("tile.spacingY","80")
success = json.UpdateBool("tile.stagger",1)

set jsonOut = CreateObject("Chilkat.JsonObject")
success = pdf.Watermark("add",json,jsonOut)
If (success = 0) Then
    outFile.WriteLine(pdf.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine("id: " & jsonOut.StringOf("id") & " pages: " & jsonOut.StringOf("pages"))

success = pdf.WriteFile("qa_output/report_traced.pdf")
If (success = 0) Then
    outFile.WriteLine(pdf.LastErrorText)
    WScript.Quit
End If

'  Sample output:

'  id: trace pages: 1-3

outFile.Close