Description
This plugin finds any CAPTCHA images that appear on a HTML document. The crawl is performed by requesting the document two times, and comparing the image hashes, if they differ, then they may be a CAPTCHA.
Plugin type
Options
This plugin doesn’t have any user configured options.
Source
For more information about this plugin and the associated tests, there’s always the source code to understand exactly what’s under the hood:
Plugin source code
Unittest source code
Dependencies
This plugin has no dependencies.