Option: valid_elements

This option should contain a comma separated list element convertion chunks. Each chunk contains information about how one element and it's attributes should be treated. The default rule set for this option is specified below.

Control characters:
,Separates element chunk definitions.
/Separates element synonymous. The first element is the one that will be outputted.
|Separates attribute definitions.
[Starts a new attribute list for a element definition.
]Ends a attribute list for a element definition.
=Makes the attribute to default to the specified value. For example "target=_blank"
:Makes the attribute to be forced to the specified value. For example "border:0"
<Verifies the value of a attribute. For example "target<_blank?_self"
?Separates attribute verification values, see above.
+Makes the element open if no child nodes exists. Example: +a.
Wildcards such as *,+,? may be used in element or attribute name matching.

Special variables:
{$uid} Results in a unique ID. For example "p[id:{$uid}]".

Use *[*] to include all elements and all attributes this can be very useful when used with the invalid_elements option.

Example of usage of the valid_elements option:

This example string tells TinyMCE to remove all elements that are not a "a, strong, div or br" element, convert b elements to strong elements, default target to "_blank" and keep the href, target and align attributes of the elements.

tinyMCE.init({
	...
	valid_elements : "a[href|target=_blank],strong/b,div[align],br"
});

Default rule set:

This is the default string used by TinyMCE to cleanup the HTML contents.

+a[name|href|target|title],strong/b[class],em/i[class],strike[class],u[class],p[dir|class|align],ol,ul,li,br,
img[class|src|border=0|alt|title|hspace|vspace|width|height|align],sub,sup,blockquote[dir|style],
table[border=0|cellspacing|cellpadding|width|height|class|align],tr[class|rowspan|width|height|align|valign],
td[dir|class|colspan|rowspan|width|height|align|valign],div[dir|class|align],span[class|align],pre[class|align],
address[class|align],h1[dir|class|align],h2[dir|class|align],h3[dir|class|align],
h4[dir|class|align],h5[dir|class|align],h6[dir|class|align],hr

Full XHTML rule set:

This is the default string used by TinyMCE to cleanup the HTML contents.

valid_elements : ""
+"a[accesskey|charset|class|coords|dir<ltr?rtl|href|hreflang|id|lang|name"
  +"|onblur|onclick|ondblclick|onfocus|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|rel|rev"
  +"|shape<circle?default?poly?rect|style|tabindex|title|target|type],"
+"abbr[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"acronym[class|dir<ltr?rtl|id|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"address[class|align|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title],"
+"applet[align<bottom?left?middle?right?top|alt|archive|class|code|codebase"
  +"|height|hspace|id|name|object|style|title|vspace|width],"
+"area[accesskey|alt|class|coords|dir<ltr?rtl|href|id|lang|nohref<nohref"
  +"|onblur|onclick|ondblclick|onfocus|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup"
  +"|shape<circle?default?poly?rect|style|tabindex|title|target],"
+"base[href|target],"
+"basefont[color|face|id|size],"
+"bdo[class|dir<ltr?rtl|id|lang|style|title],"
+"big[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"blockquote[dir|style|cite|class|dir<ltr?rtl|id|lang|onclick|ondblclick"
  +"|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout"
  +"|onmouseover|onmouseup|style|title],"
+"body[alink|background|bgcolor|class|dir<ltr?rtl|id|lang|link|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onload|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|onunload|style|title|text|vlink],"
+"br[class|clear<all?left?none?right|id|style|title],"
+"button[accesskey|class|dir<ltr?rtl|disabled<disabled|id|lang|name|onblur"
  +"|onclick|ondblclick|onfocus|onkeydown|onkeypress|onkeyup|onmousedown"
  +"|onmousemove|onmouseout|onmouseover|onmouseup|style|tabindex|title|type"
  +"|value],"
+"caption[align<bottom?left?right?top|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"center[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"cite[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"code[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"col[align<center?char?justify?left?right|char|charoff|class|dir<ltr?rtl|id"
  +"|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown"
  +"|onmousemove|onmouseout|onmouseover|onmouseup|span|style|title"
  +"|valign<baseline?bottom?middle?top|width],"
+"colgroup[align<center?char?justify?left?right|char|charoff|class|dir<ltr?rtl"
  +"|id|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown"
  +"|onmousemove|onmouseout|onmouseover|onmouseup|span|style|title"
  +"|valign<baseline?bottom?middle?top|width],"
+"dd[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style|title],"
+"del[cite|class|datetime|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title],"
+"dfn[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"dir[class|compact<compact|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title],"
+"div[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"dl[class|compact<compact|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title],"
+"dt[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style|title],"
+"em/i[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"fieldset[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"font[class|color|dir<ltr?rtl|face|id|lang|size|style|title],"
+"form[accept|accept-charset|action|class|dir<ltr?rtl|enctype|id|lang"
  +"|method<get?post|name|onclick|ondblclick|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|onreset|onsubmit"
  +"|style|title|target],"
+"frame[class|frameborder|id|longdesc|marginheight|marginwidth|name"
  +"|noresize<noresize|scrolling<auto?no?yes|src|style|title],"
+"frameset[class|cols|id|onload|onunload|rows|style|title],"
+"h1[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"h2[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"h3[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"h4[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"h5[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"h6[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"head[dir<ltr?rtl|lang|profile],"
+"hr[align<center?left?right|class|dir<ltr?rtl|id|lang|noshade<noshade|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|size|style|title|width],"
+"html[dir<ltr?rtl|lang|version],"
+"iframe[align<bottom?left?middle?right?top|class|frameborder|height|id"
  +"|longdesc|marginheight|marginwidth|name|scrolling<auto?no?yes|src|style"
  +"|title|width],"
+"img[align<bottom?left?middle?right?top|alt|border|class|dir<ltr?rtl|height"
  +"|hspace|id|ismap<ismap|lang|longdesc|name|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|src|style|title|usemap|vspace|width],"
+"input[accept|accesskey|align<bottom?left?middle?right?top|alt"
  +"|checked<checked|class|dir<ltr?rtl|disabled<disabled|id|ismap<ismap|lang"
  +"|maxlength|name|onblur|onclick|ondblclick|onfocus|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|onselect"
  +"|readonly<readonly|size|src|style|tabindex|title"
  +"|type<button?checkbox?file?hidden?image?password?radio?reset?submit?text"
  +"|usemap|value],"
+"ins[cite|class|datetime|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title],"
+"isindex[class|dir<ltr?rtl|id|lang|prompt|style|title],"
+"kbd[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"label[accesskey|class|dir<ltr?rtl|for|id|lang|onblur|onclick|ondblclick"
  +"|onfocus|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout"
  +"|onmouseover|onmouseup|style|title],"
+"legend[align<bottom?left?right?top|accesskey|class|dir<ltr?rtl|id|lang"
  +"|onclick|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"li[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style|title|type"
  +"|value],"
+"link[charset|class|dir<ltr?rtl|href|hreflang|id|lang|media|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|rel|rev|style|title|target|type],"
+"map[class|dir<ltr?rtl|id|lang|name|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"menu[class|compact<compact|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title],"
+"meta[content|dir<ltr?rtl|http-equiv|lang|name|scheme],"
+"noframes[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"noscript[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"object[align<bottom?left?middle?right?top|archive|border|class|classid"
  +"|codebase|codetype|data|declare|dir<ltr?rtl|height|hspace|id|lang|name"
  +"|onclick|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|standby|style|tabindex|title|type|usemap"
  +"|vspace|width],"
+"ol[class|compact<compact|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|start|style|title|type],"
+"optgroup[class|dir<ltr?rtl|disabled<disabled|id|label|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"option[class|dir<ltr?rtl|disabled<disabled|id|label|lang|onclick|ondblclick"
  +"|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout"
  +"|onmouseover|onmouseup|selected<selected|style|title|value],"
+"p[align<center?justify?left?right|class|dir<ltr?rtl|id|lang|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|style|title],"
+"param[id|name|type|value|valuetype<DATA?OBJECT?REF],"
+"pre/listing/plaintext/xmp[align|class|dir<ltr?rtl|id|lang|onclick|ondblclick"
  +"|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout"
  +"|onmouseover|onmouseup|style|title|width],"
+"q[cite|class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"s[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style|title],"
+"samp[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"script[charset|defer|language|src|type],"
+"select[class|dir<ltr?rtl|disabled<disabled|id|lang|multiple<multiple|name"
  +"|onblur|onclick|ondblclick|onfocus|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|size|style"
  +"|tabindex|title],"
+"small[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"span[align|class|class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title],"
+"strike[class|class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title],"
+"strong/b[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"style[dir<ltr?rtl|lang|media|title|type],"
+"sub[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"sup[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title],"
+"table[align<center?left?right|bgcolor|border|cellpadding|cellspacing|class"
  +"|dir<ltr?rtl|frame|height|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|rules"
  +"|style|summary|title|width],"
+"tbody[align<center?char?justify?left?right|char|class|charoff|dir<ltr?rtl|id"
  +"|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown"
  +"|onmousemove|onmouseout|onmouseover|onmouseup|style|title"
  +"|valign<baseline?bottom?middle?top],"
+"td[abbr|align<center?char?justify?left?right|axis|bgcolor|char|charoff|class"
  +"|colspan|dir<ltr?rtl|headers|height|id|lang|nowrap<nowrap|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|rowspan|scope<col?colgroup?row?rowgroup"
  +"|style|title|valign<baseline?bottom?middle?top|width],"
+"textarea[accesskey|class|cols|dir<ltr?rtl|disabled<disabled|id|lang|name"
  +"|onblur|onclick|ondblclick|onfocus|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|onselect"
  +"|readonly<readonly|rows|style|tabindex|title],"
+"tfoot[align<center?char?justify?left?right|char|charoff|class|dir<ltr?rtl|id"
  +"|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown"
  +"|onmousemove|onmouseout|onmouseover|onmouseup|style|title"
  +"|valign<baseline?bottom?middle?top],"
+"th[abbr|align<center?char?justify?left?right|axis|bgcolor|char|charoff|class"
  +"|colspan|dir<ltr?rtl|headers|height|id|lang|nowrap<nowrap|onclick"
  +"|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown|onmousemove"
  +"|onmouseout|onmouseover|onmouseup|rowspan|scope<col?colgroup?row?rowgroup"
  +"|style|title|valign<baseline?bottom?middle?top|width],"
+"thead[align<center?char?justify?left?right|char|charoff|class|dir<ltr?rtl|id"
  +"|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup|onmousedown"
  +"|onmousemove|onmouseout|onmouseover|onmouseup|style|title"
  +"|valign<baseline?bottom?middle?top],"
+"title[dir<ltr?rtl|lang],"
+"tr[abbr|align<center?char?justify?left?right|bgcolor|char|charoff|class"
  +"|rowspan|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title|valign<baseline?bottom?middle?top],"
+"tt[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style|title],"
+"u[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress|onkeyup"
  +"|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style|title],"
+"ul[class|compact<compact|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown"
  +"|onkeypress|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover"
  +"|onmouseup|style|title|type],"
+"var[class|dir<ltr?rtl|id|lang|onclick|ondblclick|onkeydown|onkeypress"
  +"|onkeyup|onmousedown|onmousemove|onmouseout|onmouseover|onmouseup|style"
  +"|title]"