From author's site:
Tidybot is a cross-platform batch (X)HTML syntax-checker and report-generator. It traverses a directory tree of (X)HTML files on your hard disk, and generates a web page listing all the errors and warnings it encounters.
Tidybot can be used in two ways: from the command-line, or through a user-friendly GUI application. The output will be identical in either case.
Tidybot was written because I needed its specific functionality and it was easier (and more fun) to cobble together my own utility than to try and adapt something else. Once it existed, I felt I might as well make it available to others.
By design, Tidybot offers access to only a small subset of what the underlying Tidy library is capable of. The original Tidy’s strong suit is actually fixing your legacy HTML files, converting them into shiny, valid XHTML files. In contrast, Tidybot purely exists to check existing files — it does not convert anything.
Another limitation is that Tidy is not a formal XHTML or XML validator. Its syntax checking, while extensive, does not guarantee 100% correctness. Similarly, there are certain exotic uses of XML/XHTML (namespaces are one example) which, while valid, are not supported by the Tidy library, and may therefore be incorrectly flagged as errors. Tidybot is good for keeping an eye on things and quickly spotting problems. It should never be used as a replacement for real validation checks.
