Computer-implemented methods and systems for categorizing a uniform resource locator (URL) based on web content associated with the URL are disclosed. In one aspect, a method includes identifying a first URL using a first URL collection method, assigning, using an electronic processor, a first categorization priority to the first URL based on the first URL being identified using the first URL collection method, categorizing, the first URL based on the first categorization priority, identifying a second URL using a second URL collection method, assigning, using an electronic processor, a second categorization priority different than the first categorization priority based on the second URL having been identified using the second URL collection method; and categorizing, using an electronic processor, the second URL based on the second categorization priority.