If you need to join many TXT files into one PDF, the best solution is to use PDF Combine Pro. It can easily combine 2 text files into one PDF as well as group hundreds of files together. In such a way you will turn your TXT information storage into easy-to-read PDF document with proper formatting and bookmarks.
PDF Combine Pro works as data converter that can easily export information from TXT to PDF and merge different sources into one file. Don't be afraid to make a mess in this document, as you can add a bookmark for each TXT original. In such a way you will always know where one document ends and another starts. Other additional features include:
Adding page count, date or other information into header or footer
Ability to merge several text files into one PDF based on common name part
Ability to separate files by folders
Command line support
PDF Combine Pro features integrated file viewer, so you can easily find what files exactly you need to select as sources. Mention that you can select any number of originals, and all of them will be merged into one PDF. TXT format has no complex document structure, just plain text without any formatting. In PDF format it will be easier to read and print data, as it will be properly optimized for standard PDF paper format.
Thanks to command line support you can merge TXT files into multi-page PDF using CMD processor. Moreover, the program itself generates the proper command and saves it into .dat file that can be run for combining files. This option is available via settings menu, in Start Conversion tab. There you can also find an option for automatic deletion of original TXT documents after combining is done.
All this you will get in PDF Combine Pro. Just download it and install on your computer for unlimited use.