Is there a way to list broken internal hyperlinks with VBA in MS Word? (Hyperlink Subaddress) - vba

Question

In MS Word, you can create hyperlinks to a "Place in this document" so that a link takes you someplace else in the same Word file. However, if you change headers or move things around these links will sometimes break. I want to write some VBA to check for broken links.
With VBA, you can list each hyperlink subaddress using the code below:
Sub CheckLinks()
Set doc = ActiveDocument
Dim i
For i = 1 To doc.Hyperlinks.Count
Debug.Print doc.Hyperlinks(i).SubAddress
Next
End Sub
The output from the code above also matches what is shown in the field codes for the hyperlink.
However, I'm not really clear on how to verify if the SubAddress is correct. For example, an excerpt from the program output shows this:
_Find_a_Staff_1
_Edit_Organization_Settings_2
_Set_the_Staff
_Find_a_Staff_1
But there's no obvious way to tell what the "correct" suffix should be for a given heading. Any thoughts on how to check if these are valid?
Is there a way to get the list of all valid subaddresses for the headings in the document?

Answer 1

The code below will list the hyperlinks where the corresponding bookmark does not exist in the document. (Note that it only detects missing links, not links that go to the wrong place.)
Sub CheckLinks()
Dim doc As Document
Set doc = ActiveDocument
Dim i, j
Dim found As Boolean
For i = 1 To doc.Hyperlinks.Count
found = False
For j = 1 To doc.Bookmarks.Count
If doc.Range.Bookmarks(j).Name = doc.Hyperlinks(i).SubAddress Then
found = True
End If
Next
If found = False Then
Debug.Print doc.Hyperlinks(i).SubAddress
End If
Next
End Sub