HTML-XML-utils provides a number of simple utilities for manipulating and converting HTML and XML files in various ways. The suite consists of the following tools:

asc2xml - convert from UTF-8 to &#nnn; entities
xml2asc - convert from &#nnn; entities to UTF-8
hxaddid - add IDs to selected elements
hxcite - replace bibliographic references by hyperlinks
hxcite-mkbib - expand references and create bibliography
hxclean - apply heuristics to correct an HTML file
hxcopy - copy an HTML file while preserving relative links
hxcount - count elements and attributes in HTML or XML files
hxextract - extract selected elements
hxincl - expand included HTML or XML files
hxindex - create an alphabetically sorted index
hxmkbib - create bibliography from a template
hxmultitoc - create a table of contents for a set of HTML files
hxname2id - move some ID= or NAME= from A elements to their parents
hxnormalize - pretty-print an HTML file
hxnum - number section headings in an HTML file
hxpipe - convert XML to a format easier to parse with Perl or AWK
hxprintlinks - number links & add table of URLs at end of an HTML file
hxprune - remove marked elements from an HTML file
hxselect - extract elements that match a (CSS) selector
hxref - generate cross-references
hxtoc - insert a table of contents in an HTML file
hxuncdata - replace CDATA sections by character entities
hxunent - replace HTML predefined character entities to UTF-8
hxunpipe - convert output of pipe back to XML format
hxunxmlns - replace "global names" by XML Namespace prefixes
hxwls - list links in an HTML file
hxxmlns - replace XML Namespace prefixes by "global names"