As Joomla CMS by default has meta generator tag which shows that the website is developed using Joomla platform. For security purpose is it important to hide it from the source code and stop letting users/hackers to know which version or CMS you are using.
You can very easily find the meta tag generator in the page source code. To view the code :
<meta name="generator" content="Joomla! - Open Source Content Management" />
You can remove the meta generator tag from the Joomla website by either adding a few lines of code to the index.php file of the active Joomla template or by simply using a third party plugin which will need no modification to any of the files.
$document = JFactory::getDocument(); $document->setGenerator('');
After Joomla update/upgrade if template gets updated, you might loose the changes that has been done to the template core files. So its better to use a third party plugin.
As you know that we can install third party plugins into Joomla. The simplest way to remove the tag is to install one. Just download, install and activate the plugin does the work. We have recently developed a free Joomla Plugin called Remove Tag Generator which can remove both generator meta tag as well as the Robots meta tag from the Joomla source code.
Download the free Remove Tag Generator Plugin