This tool is similar to my stand-alone tool, Merge PDF Files in True Numeric Order in that it combines a folder of PDF files in true numeric order, as opposed to the default behavior of Acrobat to use alphabetic order.
The difference is that this tool only works within Acrobat, and that it is somewhat more flexible than the other tool.
You select the first file in the sequence of files to combine (for example Page1.pdf) and the tool will create a new combined file of that file and all subsequent files in that folder, in their true numeric order: 1.pdf, 2.pdf, 3.pdf, ..., 9.pdf, 10.pdf, 11.pdf, etc.

The result will be saved in the save folder as "combined.pdf".



Here's how it looks like:

The folder we want to merge:

The menu item that launches the script:

We select the first file in the sequence:

The script is done:

The same folder, with the newly merged file:

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