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Bad hyperlinks in PDFs

Problem: Links in PDFs from PowerPoint don't work as expected

When you add hyperlinks to shapes in your slides then convert to PDF using Adobe Acrobat or PowerPoint's own Save As PDF feature, the links may point to the wrong slides or may not work at all. Read on for more detailed symptoms and possible workarounds.

Links applied to shapes with 3d formatting don't work

If you apply 3D formatting (bevels or the like) to a shape in PowerPoint 2010 and the shape has a hyperlink, when you convert to PDF using PowerPoint's own Save As | PDF feature, the link will not appear in the PDF.

If you use Adobe's Save As PDF add-in, the link will appear in the PDF but will take you to the slide you're already on, not to the correct slide.

This problem doesn't occur with PPTools' Prep4PDF add-in, which converts the links correctly.

The problem has been corrected in PowerPoint 2013. The links in PDFs made via PowerPoint's Save As | PDF feature work correctly.

Links point to the wrong slides

When you create hyperlinks and then rearrange or delete slides, then make a PDF using Adobe Acrobat, the links that Acrobat creates in the PDF may point to the wrong slides.

Solution

If you've re-ordered your presentation or added/deleted slides, make a copy of the presentation then run this macro on the copy of your presentation before using Acrobat to create a PDF.

But first, a word from our sponsor ... the PPTools Prep4PDF add-in takes care of this problem automatically. Try the free demo and see for yourself.

Sub FixForAcrobat()

    On Error GoTo ErrorHandler

    Dim oSl As Slide
    Dim oHl As Hyperlink
    Dim sSlideID As String
    Dim sSlideIndex As String
    Dim sSlideTitle As String
    Dim sTemp As String

    For Each oSl In ActivePresentation.Slides
        For Each oHl In oSl.Hyperlinks
            With oHl
                If .Address = "" Then
                    ' it's a link to another slide in this pres
                    ' verify that the slide number and ID of the link target match

                    ' parse out slide number and slideID
                    sSlideID = Mid$(.SubAddress, 1, InStr(.SubAddress, ",") - 1)
                    sTemp = Mid$(.SubAddress, InStr(.SubAddress, sSlideID) + Len(sSlideID) + 1)
                    sSlideIndex = Mid$(sTemp, 1, InStr(sTemp, ",") - 1)
                    sSlideTitle = Mid$(sTemp, InStr(sTemp, ",") + 1)

                    ' If the linked slide isn't present, we get an error so test first:
                    On Error Resume Next
                    If ActivePresentation.Slides.FindBySlideID(CLng(sSlideID)) Is Nothing Then
                        MsgBox "Link to missing slide on slide: " & CStr(oSl.SlideIndex) _
                            & vbCrLf _
                            & "Link points to: " & .SubAddress
                        ' stop processing this hyperlink
                        Exit For
                    End If
                    On Error GoTo ErrorHandler

                    If ActivePresentation.Slides.FindBySlideID(CLng(sSlideID)).SlideIndex <> sSlideIndex Then
                        ' the link will confuse Acrobat so fix it
                        Debug.Print "Originally:" & vbTab & .SubAddress
                            On Error Resume Next
                            sTemp = sSlideID & "," _
                            & ActivePresentation.Slides.FindBySlideID(CLng(sSlideID)).SlideIndex & "," _
                            & sSlideTitle
                         ' If target slide not present, don't reset link
                         If Err.Number = 0 Then
                             .SubAddress = sTemp
                        End If
                        Debug.Print "Now:" & vbTab & sTemp
                    End If

                End If
            End With
        Next
    Next

NormalExit:
    Exit Sub

ErrorHandler:
    MsgBox "Error:" & vbCrLf & Err.Number & vbTab & Err.Description
    Resume NormalExit

End Sub

See How do I use VBA code in PowerPoint? to learn how to use this example code.

Background

PowerPoint stores several "pointers" in its internal hyperlinks. For each slide linked to, it stores the following information for the slide:

The second and third bits don't change as the result of editing the presentation, so the SlideID is the only reliable pointer to use. Acrobat evidently uses the SlideIndex, with the result that if you have a link from Slide 2 to Slide 10 and then delete Slide 4, the link will point to the slide that's NOW at Index 10, but was originally slide 11.

PowerPoint resolves the problem by using the SlideID when it follows the link; Acrobat produces a bad link in the PDF.

The macro above checks each hyperlink to make sure that the link's SlideIndex and the SlideID both point to the same slide. If they don't, it finds the Index of the slide at the SlideID and resets the link to it.


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Bad hyperlinks in PDFs
http://www.pptfaq.com/FAQ00744_Bad_hyperlinks_in_PDFs_from_Acrobat.htm
Last update 23 July, 2015
Created: