.BTX File

File extension btx is mainly related to BibTex and used for its default document file format.

TeX is a typesetting language. Instead of visually formatting your text, you enter your manuscript text intertwined with TeX commands in a plain text file. You then run TeX to produce formatted output, such as a PDF file.

Thus, in contrast to standard word processors, your document is a separate file that does not pretend to be a representation of the final typeset output, and so can be easily edited and manipulated.

How to open:

Use BibTeX to open and edit .btx document files.

How to convert:

BibTex documents can be usually exported to other formats, including PDF.