The htmLawed PHP script makes HTML more secure and standards- & policy-compliant. The customizable HTML filter/purifier can balance tags, ensure proper nestings, neutralize XSS, restrict HTML, beautify code like Tidy, implement anti-spam measures, etc. Features: - make HTML markup in text secure and standard-compliant - process text for use in HTML, XHTML or XML documents; HTML5 support - restrict HTML elements, attributes or URL protocols using black- or white-lists - balance tags, check element nesting, transform deprecated attributes and tags, make relative URLs absolute, etc. - fast, highly customizable, well-documented - single, 55 kb file - simple HTML Tidy alternative - free and licensed under LGPL v3 and GPL v2+ - use to filter, secure & sanitize HTML in blog comments or forum posts, generate XML-compatible feed items from web-page excerpts, convert HTML to XHTML, pretty-print HTML, scrape web-pages, reduce spam, remove XSS code, etc. - version with HTML5 support (check htmLawed website)