# BibTeX and biblatex JabRef is 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). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.jabref.org/cite/bibtex-and-biblatex.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.