HTML Purifier is PHP software for HTML filtering. It is an alternative to BBCode or other obscure custom markup languages. It will not only remove all malicious code (XSS), but will also make sure the HTML is standards compliant. License: GNU Lesser General Public License (LGPL) Changes: HTML Purifier 3.0.0 has a number of improvements in CSS handling, including the filter HTMLPurifier_Filter_ExtractStyleBlocks, which integrates HTML Purifier with CSSTidy for cleaning style sheets (see the source code file for more information on usage), contains experimental support for proprietary CSS properties with %CSS.Proprietary, case-insensitive CSS properties, and more lenient hexadecimal color codes. All code has been upgraded to full PHP 5 and is E_STRICT clean for all versions of PHP 5 (including the 5.0 series, which previously had parse-time errors).

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