Website Category API
Easily classify new or existing websites with our Categorization API
Leverage our data for your classification needs
Our website URL categorization API supports the industry standard IAB contextual taxonomy, allowing you to retrieve categories for an entire website, IP address, or a specific URL. You can accurately identify the main topics of content with more than 390 top and sub-level categories which can be used for services such as targeted advertising, content filtering, and security devices. We know that maintaining an extensive database of updated, categorized websites can be a challenge. Let us manage it for you.
IAB category taxonomy support
The IAB contextual taxonomy is maintained by the Trustworthy Accountability Group (TAG) and is a set of industry standard categories. They include 26 Tier-1 (top-level) and over 300 Tier-2 (sub) categories for use by vendors.
Over 390 individual categories
In addition to supporting the IAB taxonomy, our API enriches it even further with additional categories (Tier-3) for content specific to: Gambling, Weapons, Social Networks, Proxies/VPNs/Web Filter Avoidance, and Streaming Media.
Vast amount of data
Easily block bad content
Wide range of applications
Developer friendly responses
We grow with your needs
Many types of distinct categories
Data firehose available
Easy to use
First class support
Easily choose between two top level category structures
Whether you need the deep categorization provided by the IAB taxonomy or prefer a more simple category structure, we've got you covered. You can choose between our implementation of IAB categories (390+ categories) or the Web Shrinker standard categories (40 categories) at any time.
We use a combination of advanced machine learning techniques and human reviewers to categorize most of the data. Each month our system visits and re-checks billions of URLs to keep the category data as up-to-date as possible.
Yes, the IAB categories are great if you need to know very specific categories but there are over 390 categories. That may be too many for some applications. We also have a condensed version which uses 40 top level categories for easier integration called the Web Shrinker standard categories.
All responses to the API are in JSON format. This is an example response when querying for "webshrinker.com":
Yes, we have a self-hosted version of the category data that you can license and host on your own servers. For more information, see our "Offline URL Category Database."
You can purchase API request bundles which give you a certain amount of credits and than use those credits when you need them, without any monthly or recurring charges. These request bundles can be used for any of our API services. See "Pricing" for more information.
If you have a predictable amount of requests per month we can also set up a monthly plan if you prefer. Volume discounts are available.
Each request for a category lookup is one API request and one API credit would be deducted from your account.