That’s why, beyond simply getting visitors to your site, you need to do everything possible to keep them engaged once they get there. Big companies like Netflix and Amazon have figured out that one of the best ways to do that is with quality content recommendations.
On WordPress, that means serving up posts related to content that you know your visitor is already interested in. Done well, this keeps your visitors reading and gives you more time to make a sale, get an email address, or just generally create a new fan of your WordPress site.
Not all related posts plugins are equal, though, which is why you need to make sure you pick the right one. To help you do just that, I’ve collected five of the best related posts plugins for WordPress.
The Two Approaches To WordPress Related Posts (And Why They Matter)
In order to actually serve up related posts, your chosen plugin needs a way to find content that’s related to the post a visitor is looking at. But how a related posts plugin actually goes about finding that related content is a lot more important than you might think.
Beyond different algorithms for determining what content is actually “related,” the difference in approach is basically this:
- Some related posts plugins use your own server/database to generate the list of related posts.
- Other related posts plugins outsource the recommendations to their own servers (AKA not your server) to generate the related posts.
Here’s why that difference matters:
The process of finding related content is database intensive, especially on larger sites with lots of content. So if a related posts plugin is using your own server to generate these recommendations, it’s going to gobble up your server’s resources and maybe even degrade your site’s performance. That’s why some managed WordPress hosts will outright ban certain related posts plugins.
On the other hand, if a plugin does its processing on a separate server, it’s outsourcing all the hard work to its own server and only giving you the final list, which eliminates the issue I discussed above.
So, with that distinction in mind, let’s dig into the best related posts plugins in more detail.
5 Best Related Posts Plugins For WordPress
To create this list, I’m going to cover:
- How the plugin generates its related content (e.g. on your own server or outsourced to the cloud)
- What features the plugin offers
- Pros and cons of using the plugin over the other options on the list
1. Jetpack Related Posts
If you’ve been using WordPress for any amount of time, you probably know about the Jetpack plugin. This all-in-one offering from Automattic brings a number of popular WordPress.com features to self-hosted WordPress sites. Through a few simple clicks, you can start displaying related content at the bottom of all of your blog posts.
Pros Of Jetpack Related Posts
- It’s 100% free
- You get to use WordPress.com’s infrastructure to generate related posts, rather than your own server
- This feature is super easy to activate – just click a toggle in the Jetpack interface
- It “just works.” No need to mess around with settings (though this can also be limiting if you do want to customize things)
Cons Of Jetpack Related Posts
- You don’t have a ton of control over how your related posts look beyond basic features like turning on/off thumbnails and dates
- If you want to use related posts on other content types – like custom post types – you’ll need to dig into your site’s code
- You need to use the entire Jetpack plugin just to get access to related posts, which some people don’t like
Bibblio is a relatively new content recommendation service that’s powered by artificial intelligence. That means Bibblio is constantly improving its recommendations as it “learns” new things, whereas most other related posts plugins are just using a static algorithm.
Beyond that unique selling point, Bibblio also gives you:
- Flexible layout options for displaying your posts. You can even create a vertical layout to display in your sidebar via a widget
- Built-in custom post type support
- Analytics to see how your related posts are actually performing (this is one of the coolest features in my opinion)
Pros Of Bibblio
- You get to use Bibblio’s servers for processing related posts
- Bibblio’s machine learning algorithms should generate continuously better recommendations (at least in theory)
- The out-of-the-box designs look great
- You have more control over layout without the need for code or custom CSS
- You can add custom post type support right from the interface – no code required
- The analytics are really useful for seeing if your related content is actually engaging readers
- You can insert posts via either a widget or shortcode
Cons Of Bibblio
- If you have more than 500 content items, you’ll need to pay (plans start at $19). There’s also a 25,000 “recommendation calls” limit on the free plan
- Doesn’t let you manually select which posts are shown on a specific page.
3. Yet Another Related Posts Plugin (YARPP)
By the numbers, Yet Another Related Posts Plugin is the most popular related posts plugin in the repository. It lets you display your related posts as either thumbnails or lists and works on all post types.
You have a ton of flexibility for where and how your related posts display if you’re comfortable with basic PHP.
And you can also manually tweak the algorithm that Yet Another Related Posts Plugin uses to generate related posts. This is nice if you want to, say, exclude tags.
Pros Of Yet Another Related Posts Plugin
- It’s very flexible, though some of that flexibility requires some technical knowledge
- It works on all post types
- Multiple display options, including a widget for related posts in your sidebar
Cons Of Yet Another Related Posts Plugin
- It processes posts on your own server, which isn’t good for performance
- While it’s flexible, it’s not as user-friendly as Jetpack or Bibblio
- While the developers have worked on improving performance, it still has a reputation as a bit of a resource hog
- It’s not supported very well by the developers, despite its popularity
4. Related Posts for WordPress
Related Posts for WordPress is a freemium plugin that lets you display related posts via both a shortcode and a widget.
While it does process posts on your own server, its caching system helps it use resources much more efficiently.
The free version is only good for regular posts, but the premium version offers support for custom post types, as well.
Pros Of Related Posts for WordPress
- Solid performance thanks to its caching system
- Lets you manually tweak related posts if desired
- Gives you options for both shortcodes and widgets
- Lets you adjust weighting for “relatedness” (only in Pro)
Cons Of Related Posts for WordPress
- No custom post type support in the free version
- Many of the other helpful features are locked behind the paid version, as well. E.g. there are no automatic styling options in the free version
5. Contextual Related Posts
Contextual Related Posts is another popular option that lets you display related posts with both a widget or a shortcode.
It supports custom post types, as well as a helpful option to exclude certain categories of posts (or individual posts) from being displayed in the related posts list.
The main downside, though, is that it uses your own server to generate content recommendations and, as a result, ends up on the banned list at some hosts and might negatively affect your site’s performance.
Pros Of Contextual Related Posts
- 100% free
- Supports custom post types out of the box
- You can display related posts inside your content (not just at the end)
- Option to mix-and-match post types (or limit related posts to only the same post type)
- Lots of small style options for thumbnail sizes, metadata, etc.
- Option to exclude certain categories from related posts results
Cons Of Contextual Related Posts
- Because it uses your own server, it can hog resources and end up banned by some hosts
- Not a ton of built-in layout options, though it makes it easy to use custom CSS
- The algorithm only finds related posts based on title and content, which is more limited than all the other plugins
Which Related Posts Plugin Should You Use?
It’s hard to give an overall recommendation because a lot of this comes down to the specific features that you need. For example, do you need a plugin that easily supports custom post types or are you fine with basic blog post recommendations?
If you’re already using Jetpack and like how Jetpack’s default styles look, it’s a great option that won’t cost you a penny.
If you want more flexibility and/or a potentially better algorithm, Bibblio makes it easy to get more creative with your related posts and also gives you analytics to see how effective they are. The only thing to consider is that large sites might need to pay because of the 500 post/25,000 recommendation call limits.
Of these related posts plugins, which is your favorite? Or, do you like one that’s not on this list? Let us know in the comments!