Development tips
This post will explain you how to add a custom filter to layered navigation in Magento 2. Prepared by Alexander Skrashuk, Senior Magento developer at Extait.
Discover the main development steps for product navigation and filtering in the catalog using AJAX in Magento 2.
Get to know how to add multiple select to Magento 2 layered navigation.
Magento 2.3.x still needs extended functionality to make email attachments work. Here you can find out how to implement this.