
Development Versions: [devel](https://www.postgresql.org/docs/devel/docguide.html "PostgreSQL devel - Appendix J. Documentation")

PostgreSQL has four primary documentation formats:

-   Plain text, for pre-installation information
    
-   HTML, for on-line browsing and reference
    
-   PDF, for printing
    
-   man pages, for quick reference.
    

Additionally, a number of plain-text `README` files can be found throughout the PostgreSQL source tree, documenting various implementation issues.

HTML documentation and man pages are part of a standard distribution and are installed by default. PDF format documentation is available separately for download.
