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I have tried many different things to get add_editor_style() to load into the source code on my site without any luck. I would like to use editor-style.css to customize CSS properties for my WordPress WYSIWYG. However, I am unable to get it working. Even when I look in Chrome Inspector's Resources tab and scroll down to "Stylesheets" I don't see any listing of editor-style.css

Here's what I tried so far:

  1. Placed editor-style.css in the root of my theme directory
  2. <?php add_editor_style(); ?> is placed in my functions.php file for my theme (I've even moved around this function call to editor style in my functions.php to see if that would do the trick … no luck.
  3. All of my CSS and JavaScripts are registered and enqueued in my functions.php file

Is there some type of override going on that I am not aware of?

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On which action do you call add_editor_style()? – toscho Jul 29 '12 at 20:36
I'm calling it directly within my theme as is. Is that incorrect? – Matt Jul 29 '12 at 22:12
You should always wait until after_setup_theme. Does that work? – toscho Jul 29 '12 at 22:34
It doesn't...I activated the TwentyEleven theme and I don't even see editor-style.css getting loaded into the source here either. Am I missing something amount the way this works? I see editor-style.css in TwentyEleven's theme root... – Matt Jul 29 '12 at 22:47
The editor style is applied to the iframe in TinyMCE’s visual editor only. Make sure to inspect exactly that. Try to set a red background for .mceContentBody to see immediately if the CSS is used. – toscho Jul 29 '12 at 23:03

You shouldn't call add_editor_style() directly in your functions.php file. Instead, you should wait until the plugins and themes have been loaded:

add_action( 'after_setup_theme', 'add_editor_style' );

If you already have a function hooked to after_setup_theme, you can call add_editor_style() inside there instead.

You then need create a file called editor-style.css and place it in your theme direcrory. You must not place it in a subfolder; otherwise it will not be found. Try using this code in editor-style.css, just to see if it is working:

body#tinymce.wp-editor { 
    font-family: Arial, Helvetica, sans-serif; 

body#tinymce.wp-editor a {
    color: #ffa500;

If the editor appears in a different font with orange links, then it works!

Contuary to what you are assuming, editor-style.css will not show up under the "Stylesheets" section of Chrome's developer tools. This is because the visual editor is loaded in an <iframe> element; essentially it is on another webpage that is embedded into the new post page. On this external page is where the editor-style.css stylesheet is loaded.

If you really want to check is editor-style.css is loaded, you can right-click on the visual editor body and choose Inspect Element from the context menu. Just above the line that is highlighted, you should see a <link> element pointing to your editor-style.css file.

Screenshot of using Chrome Developer Tools on my own dev site

You should also read the Codex page for add_editor_style().

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Correct Answer: Put add_editor_style('editor-style.css'); in a function hooked to after_setup_theme action hook. Pass the name of file you want to use for editor CSS as the argument, or skip the argument if you want the name to be 'editor-style.css' as it's optional.

Wrong Answer: The optional parameter doesn't seem to be optional. This works for me:


And yep, it's okay to call it directly in your theme's functions.php.

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The parameter is actually optional. WordPress will include the editor-style.css stylesheet just fine if no parameter is passed. Also: you should always put functional code inside callbacks hooked into an appropriate action hook in functions.php. – Chip Bennett Jan 18 '13 at 19:26
Thanks for the clarification. – Abhinav Sood Jan 19 '13 at 18:22

Had difficulty until finding parent theme was calling add_editor_style()

The Twenty Fourteen should wrap this so it's possible dequeueing the call with remove_action, not editing the parent functions.php

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