Introduction

Content Construction

The powerful award-winning content extension for Joomla with more than 4 million downloads (and counting)!



WHAT IS K2?

K2 provides an out-of-the box integrated solution featuring rich content forms for items (think of Joomla articles with additional fields for article images, videos, image galleries and attachments), nested-level categories, tags, comments, a system to extend the item base form with additional fields (similar to CCK for those acquainted with Drupal or ACF in WordPress), a powerful plugin API to extend item, category and user forms, ACL, frontend editing, sub-templates & a lot more!

Using K2, you can transform your Joomla website to a news/magazine site with author blogs, product catalogs, work portfolio, knowledge base, download/document manager, directory listing, event listing & more, all this bundled under one package!

Give K2 a try & you'll instantly love it! It's easy to use and fun to develop websites with! If you need any help or want to contribute to the project, join us at the K2 community.


FEATURES

Since K2 is extensible with additional fields to its base item form, you can easily create category-specific content types, e.g. article, blog post, product page, directory listing.

K2 offers as standard:
- Nested-level categories
- Tags
- Distinct item image (useful for articles/catalogs), generated in 6 configurable dimensions by default to allow precise image size loading for your site's frontpage, categories/tags etc., side modules and items.
- Image galleries
- Videos
- Attachments
- User pages (author blogs/user profiles)
- Commenting, integrated with Google's reCaptcha & Akismet
- Smart ACL for frontend editing
- Unique plugin system to extend item, category & user forms
- AJAX based frontend editing & comments moderation
- Rest-like JSON/JSONP/RSS/Atom content output
- Native advanced SEF options
- Google Structured Data built-in
- Facebook OpenGraph & Twitter Cards support
- Built-in media manager
- 100% mobile-friendly backend user interface - a joy to edit your content on-the-go
- Total options control, with minimal hassle. Instead of configuring category options over and over, use K2's category option inheritance to allow one category to inherit all options of another category! Or create categories that act as "configuration templates" for other categories (e.g. one set for news/blog posts, another for products, a third for events and so on) and assign them to groups of categories.
- The most advanced, yet easiest to use templating system (with multiple template override sets) to create any type of content you want - the true power of K2!
- Secure & robust by design. In its nearly 14 year history (as of Jan 2023), K2 has only had low priority vulnerabilities you can count in just one hand, which were swiftly addressed. Just search for "K2" in the Joomla Vulnerable Extensions List (VEL - https://extensions.joomla.org/vulnerable-extensions/resolved/) to verify directly.
- K2 aims for stability and strong backwards compatibility with regular incremental improvements & fixes. No "move fast and break things" mentality here.

K2 integrates fully with the Joomla API, which means any third-party Joomla plugins will function properly within the K2 component & modules, either in the frontend or backend.


AMAZING PERFORMANCE

Pixeden, Groupama, Harvard, High Court of Australia, Amnesty International, Arturia are just some of the thousands of top Joomla sites around the world, fully powered by K2.

K2 also significantly outperforms the default Joomla article system in any real-world configuration, especially in high-traffic scenarios like media/news sites.


COMPATIBILITY

K2 is currently compatible with Joomla versions 1.5, 2.5 & 3.x on servers running PHP versions 5, 7 & 8.

Starting January 2023, K2 is provided in a rolling release development model by default. These rolling releases are identified by their build number/date. Point releases will still be used for reference, so it's easy for example to define compatibility with current Joomla & PHP versions. You can read more about these changes here: https://getk2.org/blog/k2-v2-11-rolling-releases-joomla-4-and-more


DEPENDENCIES & LICENSE

To utilize the built-in media & gallery features you need to install AllVideos (free) & Simple Image Gallery Pro, both provided by JoomlaWorks.

K2 is developed by JoomlaWorks & licensed under the GNU/GPL license.


WHAT NEXT?

Try K2! Install it, hit the "import" button to bring your Joomla articles inside K2, start playing with the component to see the flexibility it provides first-hand. Moreover? You no longer need a dozen of components & even more modules/plugins to do things like run a news site or a blog.

Visit the K2 Community website: getk2.org

Functionality
This component was highly rated with great functionality for Joomla 3 and older, but does not support J4 and above. You will be stuck in J3!
Ease of use
K2 was very easy to use, but does not support J4 at all. You will be stuck in J3. You cannot use it with other apps that only supports J4.
I used this to: Use for Encyclopedia, BUT cannot use anymore. We cannot move to J4. The irony - there is NO alternative that we can convert to, now we are stuck. We trusted K2 with future development since they started in 2009 and frequently update. We never expected them to stop development.
Functionality
It works perfectly in Joomla 3, you can create posts and categories and URLS with SEO.
Ease of use
Very easy to use. You can edit/add/enable/disable posts and customize all thins using the UI.
Support
Joomla doesn't support Joomla 4. I DON'T RECOMMEND IT in a production enviroment, is better use the "native articles" with Joomla.
Documentation
Very good documentation in the oficial and a good community forums with help from other users.
I used this to: I have been using K2 in a personal blog with more than 500 articles. But now, K2 doesn't support K2, so there are a lot of people using deprecated Joomla version due to the K2 blocking.
Functionality
Highly function-able. I love using K2 when a customer wants to have more than one blog section on a site. I have found it easy to CSS style.
Ease of use
Super easy to use. Tons of videos on YouTube regarding set up. Tons of set up and display options in the settings.
Support
Lot of support out there. People have been using K2 for years and swear by it.
Documentation
The JoomlaWorks website has tons documentation. A lot of people have posted videos on YOuTube on how they set it up.
I used this to: Multi-blog website for an animal shelter. Using the categories to separate the posts and have different styling a layout for each of the 4 blogs.

Love it!



Posted on 11 March 2021
Functionality
very wide range of possibilities to achieve different goals. I'm happy with what I found with this extention.
Ease of use
intuitive user-friendly + notifications help to move through the configuration easily
Support
Excellent. Very supportive and friendly team. Fotis is the best!
Documentation
I used this to: website content - articles tree and use K2 even for paintings gallery
Functionality
it's better than joomla, i use it for all my web site, it's easy and verty styrong, thanks a lot
Ease of use
it's better than joomla, i use it for all my web site, it's easy and verty styrong, thanks a lot
Support
Documentation
I used this to: it's better than joomla, i use it for all my web site, it's easy and verty styrong, thanks a lot
Functionality
Pros for me: auto-rendering of different sizes for article image, easy article-related integrations and good layout-workflows for developers
Ease of use
Pros for site-authors (my clients): every article-related content can be find within the article and intro and fulltext in different fields.
Support
Have not needed the support yet, but the forum is very active and a lot of solutions can be found there...
Documentation
The documentation could be better: one user manual with everything, but again: the forum ist very good!
I used this to: I used K2 for several websites with heavy manipulation of the K2-category-, modules- and items-layouts. Clients are happy, not to care about article image-size.

Great Support



Posted on 13 January 2020
Functionality
Have used K2 for multiple Joomla websites and their related blogs.
Ease of use
Easy to install and setup - there is a lot more functionality out there will continue to learn more about the capabilities.
Support
Great support - had an issue with a RSS feed and response guided me to the solution. A plugin casued the issue - turned it off and was set!
Documentation
I used this to: For many Joomla websites, blogs and the occasional product pages implementation.
Functionality
With K2 you can do anything in Joomla. The easy sub-templating featured, the extrafields and other features makes K2 flexible for any use.
Ease of use
With some few knowlegde of php and mysql K2 it's the easiest CCK on Joomla.
Support
Documentation
I used this to: A lot of things, products Catalog, News, Directory Search, E-shop
Functionality
O K2 dá um banho de funcionalidades no próprio sistema do Joomla! Já uso K2 há 9 anos e sempre consigo criar soluções para meu site.
Ease of use
A interface do K2 é bem fácil e intuitiva. Perfeita para uso geral, mas são tantas opções que é possível se perder e se esquecer de algo.
Support
O suporte do K2 é disparado o melhor de todos! O fórum é muito ativo e os desenvolvedores sempre ajudam com soluções personalizadas!
Documentation
A documentação do K2 é bem completa, mas, novamente, tem que ler com atenção. Depois que aprende fica fácil.
I used this to: Uso para o meu site de filmes e consigo expandir as funções com várias extensões compatíveis. O site fica bem moderno, rápido e cheio de funcionalidades. Quem tiver curiosidade pode acessar o site Café com Filme para ver como fica o resultado.

Good to use



Posted on 03 December 2019
Functionality
Very useful. I will give a score of 9. This module functions properly with the functions available.
Ease of use
I will give score 8. just a click away and everything you need can be done in single click.
Support
Excellent support. I was even helped with video assistance. Thanks a lot, admin.
Documentation
I will give 10 out of 10. The reason behind it is the module been well documented and easy to understand.
I used this to: Display my gallery and articles. I can organise my galleries and articles as I wish and easy to view and read. Apart from that, I like their voting function for the articles
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K2

Version:
2.11.20240213
Developer:
JoomlaWorks
Last updated:
Mar 28 2024
6 months ago
Date added:
Apr 14 2009
License:
GPLv2 or later
Type:
Free download
Includes:
c m p
Compatibility:
J3
Download

Uses Joomla! Update System

Score:


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