If the images are floating (ie not set with the InLineWithText) the you can
use the Select Multiple Objects (the icon is found on the Drawing Toolbar
under Customize).
Beware this may select objects you don't want to change, so tread carefully
- maybe work on a copy of the document.
If the Images are InLineWith then the following macro will change all in one
click.
Sub ResizePictureWidth()
' Macro to Resize ALL pictures in the document
Dim inshpPower As InlineShape
Dim sngOldWidth As Single
Const sngNewWidth As Single = 13.5
With ActiveDocument
If .InlineShapes.Count > 0 Then
For Each inshpPower In .InlineShapes
With inshpPower
sngOldWidth = .Width
.Width = CentimetersToPoints(sngNewWidth)
.Height = CentimetersToPoints(((.Height * sngNewWidth) /
sngOldWidth))
End With
Next
Else
MsgBox "There are no shapes in this document.", _
vbExclamation, "Cancelled"
End If
End With
End Sub
This macro is set for 13.5cm, so you may need to change this for your needs
and units.
see
http://word.mvps.org/FAQs/MacrosVBA/CreateAMacro.htm for help with macros.
You don't say want Word version you are using, the above is mainly for 2003
and prior but will indicate were to go with 2007.
Hope this helps
DeanH