jsoup is a Java library for working with HTML.
It provides an API for extracting and manipulating data,
using DOM, CSS, and jquery-like methods.

jsoup implements the WHATWG HTML5 specification.

- scrapes and parses HTML from a URL, file, or string
- finds and extracts data, using DOM traversal or CSS selectors
- manipulates the HTML elements, attributes, and text
- cleans user-submitted content against a safe white-list,
to prevent XSS attacks
- outputs tidied HTML

jsoup can deal with invalid HTML tag soup.