How to add a custom layered navigation filter in Magento 2?

What are the ways to add a custom layered navigation filter in Magento 2?

By default, a Magento 2 custom layered navigation filter cannot be added on the front end. So if you want to add a filter for any reason, you must do so either by writing code to do so, which is technically difficult and requires coding skills, or by using a third-party extension such as Improved Layered Navigation extension, which allows you to add a filter in a click. 

How to create Magento 2 custom product collection with Layered Navigation?

Magento 2 custom product collections can be added with the Layered Navigation extension. It allows you to display different product collection filters on any Magento 2 category page and customize each search filter according to your customers' needs. SEO-friendly navigation filters will help you attract more traffic.

How to add a custom filter with the help of the extension?

Let's see how to add a custom filter using the Category filter as an example:

Step 1. Navigate to Stores > Configuration > Advanced Multilevel Navigation > Category Filter.

Step 2. Select Yes from the Enabled drop-down list to enable the filter.

Step 3. Specify the Position for the filter.

Step 4. Click the Category Filter Settings button to make other filter settings.

What is Magento 2 layered navigation AJAX filter with multi-select?

Magento 2 layered navigation AJAX filter with multi-select is a tool that gives you the advantage of Magento 2 AJAX technology to change filter results without having to reload the page. Shoppers can easily continue to select search filter options while it is updated, layer by layer. This speeds up the shopping process, giving customers the ability to find the products they need in seconds, improving your store's user experience.

How to enable multi-select in Magento 2 layered navigation?

To allow multiselect in Magento 2 layered navigation you need to configure the filter display options. To do this, go to Stores > Attributes > Products and select the desired option > go to the Improved Layered Navigation tab.

Enable the Allow Multiselect option to allow clients to apply multiple filters at the same time. 

User-friendly navigation is one of the most important points in the process of creating an online store. It directly affects the shopping experience and your site's ranking in search engines. The extension allows you to add a user-friendly navigation menu to your site and give customers the ability to filter products by aspect and optimize your store for search engines.

What is Magento 2 custom product collection within Layered Navigation?

Simply put, a custom collection is a set of products with a certain attribute or a number of shared attributes. Knowing that you can add as many filters to your Magento, as many attributes you have, you can create a new product attribute and share it for the Magento 2 custom product collection. And then, with Layered Navigation in use, create a special filter for this collection.

What are the benefits of the AJAX layered navigation in Magento 2?

AJAX layered navigation in Magento 2 provides selection options on the category and search results page using filters. It enables your customers to get the results they need and reduce the time it takes to find the right item.  

What are the benefits of Magento 2 product filters?

Magento 2 product filters help customers to choose items that meet their needs and, accordingly, increase the usability of the site. Moreover, the presence of product filters in the online store is one of the factors for ranking websites by search engines