INSTALLING TYPO3
================

TYPO3 is an open source PHP based web content management system released
under the GNU GPL. TYPO3 is copyright © 1999-2026 by Kasper Skaarhoj.

Official Installation and Upgrade Guide
---------------------------------------

You can find instructions regarding installation at
https://docs.typo3.org/installation and instructions on upgrading at https://docs.typo3.org/upgrade


Server system requirements
--------------------------

Find the official system requirements in TYPO3's [documentation](https://docs.typo3.org/system-requirements).

TYPO3 Security
--------------

To ensure a secure installation, you have to make sure that you keep
your TYPO3 core and the extensions up to date.

* Subscribe to the announcement mailing list. This will inform you about
  new releases of the TYPO3 core and security bulletins of core and
  community extensions.
  http://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce

* Please refer to official TYPO3 Security Guide for further information
  about security-related topics of TYPO3 CMS and the resources compiled
  by the Security Team. https://docs.typo3.org/security
  https://typo3.org/teams/security/resources/

* Please consider also hardening your TYPO3 instance further by
  adjusting permissions on non-changing files/folders.

TYPO3 Contribution Guide
------------------------

You can find further information in the
[README.md](README.md#contributing).
