Return text from a PDF stored in a SQL Server database (Adobe iFilter)

We are storing PDF files inside a SQL Server 2008R2 DB. We have installed the Adobe iFilter to create a full-text catalog in order to search these files. Everything was working great, until.... we tried to get the text out of that PDF for display on a website. I am at a loss. We want to be able to return the text of a PDF file as varchar(max) using just straight-up T-SQL. I assume we would need to create a function and *somehow* use the iFilter to pull out the text, but I cannot find any documentation on how to do such a thing.  Has anyone done this?  Is there documentation online anywhere?  Thanks

There is no Adobe documentation. iFilter is a standard Microsoft interface. I've never seen the documentation. It may be that you don't use it directly, but invite the system to extract text. You may need to pull out and save the data into a regular file first. I've seen some discussion suggesting that trying to use the iFilter directly (rather than letting Microsoft functionality use it) doesn't work.

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