How to find out what version of Joomla a website uses
An online “fast check" method for every version from J! 1.5.0 to J! 5.x
The normal way to discover the exact version of Joomla that a website is to login to the backend.How to check the Joomla version?, Joomla Documentation, updated 16-Nov-2021 This is fine if you have some kind of access to the website but there may be other reasons why you need to know if a website uses Joomla and, perhaps importantly, what is the exact version it uses.
As we saw before in my last article, there are browser tools (e.g. Wappalyzer) that may give a general indication about the underlying technology that a website uses. While it may or may not be a good thing that people can discover the technology that a website uses, there are also methods that website managers can use to conceal that information from prying eyes; this is usually achieved by writing .htaccess and rules and strategically locating them in those folders you want to keep secure from prying eyes. We will not discuss how to do that in this article but, it’s fair to say that most website managers are either (a) unaware of these possible exposures or (b) do not use additional security methods.
The internet is full of websites that explain how to discover the identity of Joomla websites.Examples include: How to Detect Joomla Websites, Thorsten Frommen, 2-Feb-2017; How to check the version of Joomla without hacking?, GavickPro, 11-Aug-2016
One of my favourite resources is an article written about a long time ago entitled How to quickly know the version of any Joomla website. I’ve been meaning to preserve this information in case the website is unavailable but I strongly encourage people to visit https://www.itoctopus.com; furthermore, if you live in North America and you need help with your Joomla website, contact the site owner and get his expert help. In the meantime, I've written a small form below that “automates” the copy-and-paste method I’ve been using for years.
Method 1:
Method 2: