Find All Italics and Bold words in Adobe Reader

Try this:
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I found a way to do it in Acrobat Pro. You can create a new Check (in the Preflight panel) using the 'Font is Italic" property. Beware: when you Add the property to define the check itself, the default setting is "is not true", which is the opposite what we're looking for. You have to set it to "is true" to be able to find italicised text.

Actually there is a lot more; we can look for small caps, serif and sans serif fonts etc. Wonderful!"
By Puch from printplanet.com