It doesn't change how the document looks, but it allows Acrobat to search the index instead of the actual text, which is much faster.

Searching an indexed file or folder is significantly faster than a standard search because Acrobat references the pre-built index rather than scanning the entire document again. Batch Processing:

Let’s be clear: Piracy is illegal and dangerous. This article is about downloading cracked software. Instead, this is a comprehensive, professional guide to creating, managing, and utilizing search indexes within Adobe Acrobat Pro. By the end of this article, you will understand how to turn thousands of PDFs into a searchable, structured database using the full power of Acrobat Pro’s indexing tools.