TinyMCE Valid Elements

WordPress PluginAllows one to add “invalid” and custom HTML elements to the TinyMCE editor.

tinymce_valid_elements.zip (version 0.3)

Tags: tinymce, editor, html, element

Requires at least: 2.5

Tested up to: 2.7.1


By default, WordPress’ WYSIWYG editor, TinyMCE, will strip out of your Article and Page HTML code any elements that are not defined as “valid elements”; this can be extremely annoying (especially if you want to include iframes).

This plugin will allow you to extend what TinyMCE defines as “valid elements”. By doing so, TinyMCE will no longer remove, delete, or strip-out the additional elements and attributes that you specify.

** NOTE: Make sure after you add elements or attributes you do a hard refresh (ctrl + F5) of your browser on a TinyMCE screen (editing or creating a page/post) so that the TinyMCE cache will be refreshed! You will not see your changes until you do this!


  1. Upload the tinymce_valid_elements/ directory and its contents to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress
  3. Go to Manage -> TinyMCE Valid Elements and add some elements and attributes.

Read the Help Section at the bottom of the management page.

Frequently Asked Questions

I added new elements/attributes, why is TinyMCE still stripping it out?

  • Most likely, you need to do a hard refresh of your browser (ctrl + F5). Your JavaScript cache needs to be refreshed.

58 thoughts on “TinyMCE Valid Elements

  1. I have the same problem as wolfgang. “I would like to enable one further attribute for element . When doing so my attribute is enabled while all *default* attributes (like “class”) are gone.”

    I have had to manually add ALL valid attributes along with my invalid attribute to get it to work as desired. Other than that it works great.

  2. Does this plugin work with WordPress 3.3.2 ?

    I can’t find “Manage -> TinyMCE Valid Elements” so I cannot add any elements or attributes right now :(

  3. I like what you guys are up too. This sort of clever work and reporting!
    Keep up the fantastic works guys I’ve incorporated you guys to my

    Here is my homepage … Webster

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