This website contains links to software which is either no longer maintained or will be supported only until the end of 2019 (CKFinder 2). For the latest documentation about current CKSource projects, including software like CKEditor 4/CKEditor 5, CKFinder 3, Cloud Services, Letters, Accessibility Checker, please visit the new documentation website.

If you look for an information about very old versions of CKEditor, FCKeditor and CKFinder check also the CKEditor forum, which was closed in 2015. If not, please head to StackOverflow for support.

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{{#CUSTOMTITLE:CKEditor for Drupal Troubleshooting}}
The following article describes some known issues that you might encounter when installing and using the CKEditor for Drupal module.
== CKEditor does not work in my theme ==
Your theme may be missing the following code:
<source lang="php">
<?php print $scripts; ?>
Add that line of code to the head section of your theme.
Another possibility is that the following code might be missing in your theme:
<source lang="php">
<?php print $closure; ?>
The solution is similar as above &mdash; you need to add that line to your theme at the end of its code.
Finally, you can also switch to a different theme.
== Known module incompatibilities ==
At the moment CKEditor will not show up when the following modules are enabled:
* [ Theme developer]
* [ Theme Builder]
== Images are not displayed when submitted ==
Most probably you need to properly configure the input format. Either set it to '''Full HTML''' or add the <code><img></code> tag to the '''Filtered HTML''' format. The full list of tags that should be allowed is available in the <code>README.txt</code> file. Make sure that you have read the "Setting Up Filters" section in the <code>README.txt</code> file or on this page:
== I followed the instructions, but CKEditor does not show up ==
First of all make sure that CKEditor is enabled on this specific page. Take a look into the source code of your page and search for something similar to:
<source lang="javascript">
"ckeditor": { "module_path":
If you cannot find such code, it means that CKEditor is disabled on that page/field. Make sure that you have the right permissions to use CKEditor and check your CKEditor profile (include/exclude settings, minimum rows value).
If CKEditor is enabled, but it does not show up, try the following steps:
# Switch to the default theme (Garland). If CKEditor appears, read the "CKEditor does not work in my theme" instructions.<br /> If your theme already contains the <code>closure</code> and <code>scripts</code> statements, read below.
# Make sure that you are using a browser that is compatible with CKEditor.
# On some occasions other installed modules may cause CKEditor not to show up (although if you look at page source, you will see the CKEditor code).<br /> Instead of CKEditor you may see a very small textarea.<br /> This mostly happens when some other module causes a JavaScript error and CKEditor cannot load because of this.<br /> To check this:
#* Write down the list of currently installed modules.
#* Disable all additional modules.
#* If CKEditor shows up, start enabling the modules that you disabled in the previous step and find out which module is incompatible with CKEditor.<br /> Use the [ project's website] to report a new bug and provide the following details:
#** Drupal version,
#** CKEditor module version,
#** CKEditor version,
#** The name and version of the incompatible module.
#** If additional steps are required to reproduce this issue, like creating a new special content or configuring this additional module in a special way, provide a detailed list of steps to follow.
#* If the step above did not help, disable all additional modules and switch to the Garland theme. Clear the browser cache.<br /> If CKEditor still does not work, it means that it may be corrupted.<br /> Upload CKEditor again using an FTP client that warns you when files are truncated or corrupted.
#* If CKEditor works for the Garland theme with all modules enabled, but it does not work for your theme with all modules disabled, then your theme is a problem.<br /> Use the [ project's website] to report a new bug and provide the following details:
#** Drupal version,
#** CKEditor module version,
#** CKEditor version,
#** The name and version of the incompatible theme.
# Finally, if nothing helped, to find out where exactly the error occurred, you may use Firefox with the Firebug extension.<br /> Use the [ project's website] to create a new support request providing as much information as possible, including the exact JavaScript error message that you got.
== Selected toolbar does not show for User 1 ==
There are two reasons why you are seeing a different toolbar (or do not see CKEditor at all):
* If the '''Allow users to customize CKEditor appearance''' option is enabled, each user may override the profile settings in the '''Rich text editor settings''' section of the <code>admin/user/N/edit</code> page ('''My Account''' -&gt; '''Edit''').
* A different profile is used for User 1 than you expect.<br /> User 1 must be assigned a system role that corresponds to the privileges required. If no role is assigned to User 1, this user will have the privileges of an "authenticated user" (usually it is the '''Advanced''' profile).
== The CKEditor component is not installed correctly ==
Please remember that installing the CKEditor module is a two-step process. You need to download and unpack:
* the CKEditor module that integrates CKEditor with Drupal;
* CKEditor, the rich text editor.
If your CKEditor does not show, you should check whether all files were extracted correctly. The <code>/modules/ckeditor/ckeditor/</code> directory should contain the following files: <code>ckeditor.js</code>, <code>config.js</code>, <code>contents.css</code> as well as directories named <code>skins</code>, <code>themes</code>, <code>lang</code>, <code>images</code>.
The correct directory structure is as follows: <source>
modules              <dir>
  ckeditor          <dir>
      ckeditor        <dir>
        _source      <dir>
        images      <dir>
        lang        <dir>
        plugins      <dir>
        skins        <dir>
        themes      <dir>
== CKEditor does not work after upgrading ==
This may be caused by the browser cache. Clear your browser cache and restart the browser if clearing the cache did not help.
If you upgraded the CKEditor module, make sure that all roles with "access ckeditor" permissions are assigned to at least one CKEditor profile.
== Text alignment does not work ==
In the <code>ckeditor.config.js</code> file (located in the CKEditor module directory), the following classes are defined to provide the text alignment functionality:
<source lang="javascript">
config.justifyClasses = [ 'rteleft', 'rtecenter', 'rteright', 'rtejustify' ];
Unfortunately, some themes may override these styles and text alignment may not work as expected.
If you are using the '''Full HTML''' input format, you may simply comment out this line:
<source lang="javascript">
//config.justifyClasses = [ 'rteleft', 'rtecenter', 'rteright', 'rtejustify' ];
CKEditor will then use inline styles instead:
<source lang="html4strict">
<p style="text-align: right;">sample text</p>
The problem is that inline styles may only be used with the '''Full HTML''' format. '''Filtered HTML''' will strip that code, so do not use this solution with this input format.
For '''Filtered HTML''' things are a bit more complicated. For example if your theme defines such CSS style:
<source lang="css">
.content p { text-align: left; }
the <code>text-align</code> property set in the <code>.rteright</code> class will not work.
To align the <code>&lt;p&gt;</code> tag, you will have to edit the <code>modules/ckeditor/ckeditor.css</code> file and create a style that will be applied to the <code>&lt;p&gt;</code> tag:
<source lang="css">
.content p.rteleft {
  text-align: left;
.content p.rteright {
  text-align: right;
.content p.rtecenter {
  text-align: center;
.content p.rtejustify {
  text-align: justify;
Use DOM inspector (in Firefox) to check why the alignment does not work and to correct your CSS styles. There is no universal workaround for this situation.
== Line breaks removed when editing content previously authored without using CKEditor ==
The problem lies in the way you configured your input filters. Before you enabled CKEditor, you probably had the Line break converter enabled. Now you are trying to edit the same content with the Line break converter disabled, thus the line breaks are removed.
Possible workarounds:
* Enable the Line break converter (not recommended).
* Create a new input format with the Line break converter enabled. Use it just for old articles (recommended).
* Start with CKEditor disabled by default, replace all new line characters manually with a <code>&lt;br /&gt;</code> tag, then use toggle to switch to WYSIWYG mode.
If you are a PHP programmer, you may try the approach proposed by BakerQ in
== Quote symbols are being changed to quote entities ==
Some modules like Typogrify or SmartyPants require special handling of HTML entities. For example, by default CKEditor will convert a double quote character (<code>"</code>) to <code>&amp;quot;</code>. To disable processing of HTML entities, open the CKEditor profile settings and go to the '''Advanced Options''' section. If you set the '''HTML Entities''' option is to '''No''', CKEditor will no longer convert all applicable characters to HTML entities.
== CKEditor toolbar does not show up ==
If the CKEditor toolbar does not show up and the styles/themes seem to be corrupted, it is possible that you uploaded the files via FTP in the ASCII mode. Make sure you are uploading the files in the binary mode.
== CKEditor adds &lt;p&gt;&amp;nbsp;&lt;/p&gt; ==
Sometimes you may notice that when editing nodes, the spacing between paragraphs is being doubled. This may be caused by the HTML Purifier module when the AutoParagraph option is enabled. When you disable it, make sure to clear HTML Purifier cache.

Latest revision as of 15:34, 31 May 2012

This page was last edited on 31 May 2012, at 15:34.