Abstract: Systems, apparatus, articles of manufacture, and methods are disclosed. An example apparatus includes interface circuitry; machine readable instructions; and programmable circuitry to at least one of instantiate or execute the machine readable instructions to: remove content data from a file corresponding to a first webpage, the file to include structure determiners after the removal of the content data; normalize data within the structure determiners; group the normalized structure determiners into tiles; compute a first output of a hashing algorithm using the tiles; and compare the first output to a second output of the hashing algorithm to generate a similarity value, the second output corresponding to a second webpage, the similarity value representing a structural similarity between the first webpage and the second webpage.

Abstract: Systems, apparatus, articles of manufacture, and methods are disclosed. An example apparatus includes interface circuitry; machine readable instructions; and programmable circuitry to at least one of instantiate or execute the machine readable instructions to: remove content data from a file corresponding to a first webpage, the file to include structure determiners after the removal of the content data; normalize data within the structure determiners; group the normalized structure determiners into tiles; compute a first output of a hashing algorithm using the tiles; and compare the first output to a second output of the hashing algorithm to generate a similarity value, the second output corresponding to a second webpage, the similarity value representing a structural similarity between the first webpage and the second webpage.