> For the complete documentation index, see [llms.txt](https://docs.jabref.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.jabref.org/cite/bibtex-and-biblatex.md).

# BibTeX and biblatex

JabRef is a program for working with BibTeX and biblatex libraries. JabRef program uses no separate internal file format but directly works with BibTeX and biblatex. That means, your BibTeX/biblatex file is kept as is when opening in JabRef and saving again: You normally load and save your libraries directly in the BibTeX/biblatex`.bib` format. In addition, you can also [import](/collect.md) and export bibliography libraries in a number of other formats into JabRef.

The library mode can be changed in the [library properties](/setup/databaseproperties.md).

More information on BibTeX is available on [our information page on BibTeX fields](/advanced/fields.md).