Providing a comprehensive and powerful set of filters is one of the most important parts of our app. Another crucial part is to organize these filters in a clear and user-friendly way, splitting them into self-explicable categories or filter groups.

This article gives a detailed overview of how 1Blocker's core functionality - its blocking filters - is designed. You will also learn what types of content you can block using 1Blocker and where to find corresponding filters.

Before reading further, you might want to take a moment to check what tools 1Blocker is equipped with because this article is about the filters that use the Safari content-blocking mechanism: How 1Blocker protects you.

There are four top-level categories that contain filters provided by our team. The filters are designed to block various types of visible and hidden intrusive content:

If you have 1Blocker Premium, you can activate multiple filters of your choice, creating a browsing experience that suits your needs. Usually, enabling the top-level categories is enough to enhance the appearance of websites you visit in Safari. However, you can always take a step further and adjust subcategories for a more tailored browsing experience.

Also, these are the filters that receive regular background updates that we push from our server to your 1Blocker.

It's important to note that besides these sets of preinstalled blocking rules, there are also filters operated by other mechanisms available in 1Blocker, such as 1Blocker Scripts or the in-app tracker blocker. They are explained in the corresponding articles about these tools.

Please feel free to find information on how they work in the following tutorials: