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Update 4 November 2026: JCE Pro 3.0.4 released
Some sites that updated to JCE Pro 3.0.3 from JCE 2.9.99.12 or earlier saw this error: Class "Joomla\Plugin\Extension\Jce\Extension\Jce" not foundThe cause was that the update did not always rebuild Joomla's namespace map. JCE Pro 3.0.4 fixes this, and is now the update offered to Joomla 5 and 6 sites.
If your site has this error, you cannot install an update until it is cleared. Use FTP or your host's file manager to delete this file: administrator/cache/autoload_psr4.php
Joomla rebuilds the file on the next page load, and JCE will then work normally. If the error remains, ask your host to restart PHP or clear the PHP opcache. Your settings and profiles are not affected. Once JCE is working again, update to JCE Pro 3.0.4 as usual.
If you have not updated yet, or your site works normally on 3.0.3, update to JCE Pro 3.0.4 through the Joomla Update manager.
JCE Pro 3.0.4 and JCE Pro 2.9.99.13 are now available. Both are maintenance releases that add a new "Modern Auto" toolbar theme - which follows light and dark mode - and fix issues in the editor, the File Browser and image uploads. JCE Pro 3.0.3 additionally introduces support for social media embeds.
JCE 3 is now the default update for Joomla 5 and 6
Until now, JCE 2.9.99.x was the default update for every Joomla version, with JCE 3 available as a separate download that you installed yourself. From this release, Joomla 5 and Joomla 6 sites will be offered JCE Pro 3 as their next update, even if they currently use JCE 2.9.99.x.
Sites on Joomla 3 and Joomla 4 will continue to receive JCE 2.9.99.x maintenance updates as before.
Your editor profiles and settings are kept when you update to JCE 3 - nothing needs to be exported or set up again.
If your site uses extensions that add features to JCE, such as third-party editor plugins, please test them with JCE 3 on a copy of your site before updating.
If you use Joomla 5 or 6 and wish to stay on JCE 2.9.99.x for now, do not apply the update from the Joomla Update manager. Instead, download JCE Pro 2.9.99.13 and install it yourself.
If you have already updated to JCE 3 and need to revert to JCE 2.9.99.x, uninstall JCE 3 first, then install JCE Pro 2.9.99.13. Editor profiles are not removed when you uninstall, so they will still be there after reinstalling.
JCE Pro 3.0.3
This is a maintenance release for JCE 3.0. It adds the "Modern Auto" toolbar theme, which follows light and dark mode in templates such as Atum, and fixes dark mode in dialogs, the File Browser and profile layouts.The Media Manager and IFrame dialogs now support social embeds from TikTok, Facebook and Instagram, and recognise more Vimeo and YouTube URLs. Markdown conversion has been improved, with further fixes for folder management in the File Browser, multiple image uploads, image captions, multilingual sites and copy and paste.
A changelog for this release is available to view here
Please Note: JCE Pro 3.0.3 is compatible with Joomla 5 and 6, and does not require the Backwards Compatibility plugin.
JCE Pro 2.9.99.13
This release brings many of the same improvements to JCE 2.9.99.x, including the "Modern Auto" toolbar theme, the dark mode fixes, improved Markdown conversion, and fixes for the File Browser, multiple image uploads, image captions and multilingual sites.Social embed support is not included in this release and remains a JCE 3 feature.
A changelog for this release is available to view here
Please Note: JCE Pro 2.9.99.13 is compatible with Joomla 3, 4, 5 and 6, and does not require the Backwards Compatibility plugin in Joomla 5 or Joomla 6.
