Step 1
Search the full document with PDF Search to locate the exact pages that contain the section you need.
Step 2
Open the PDF in Nitro PDF Pro, select those pages, and create a new PDF from just that selection.
Step 3
Compress the extracted file with PDF Squeezer so it's small enough to email or upload without trouble.
Step 4
Back up the original full document with Get Backup Pro before sharing the extracted version, so you always have the complete file on hand.
Step 5
Send the smaller, focused PDF to whoever actually needs it.
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