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

Crawl

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:
github-logoPlugin source code
Unittest source code

Dependencies

This plugin has no dependencies.