TinyMCE 8.5.0
| These are the Tiny Cloud and TinyMCE Enterprise release notes. For information on the latest community version of TinyMCE, see the TinyMCE Changelog. |
Overview
TinyMCE 8.5.0 was released for TinyMCE Enterprise and Tiny Cloud on Wednesday, April 29th, 2026. These release notes provide an overview of the changes for TinyMCE 8.5.0, including:
Accompanying Premium plugin changes
The following premium plugin updates were released alongside TinyMCE 8.5.0.
<Premium plugin name 1> <Premium plugin name 1 version>
The TinyMCE 8.5.0 release includes an accompanying release of the <Premium plugin name 1> premium plugin.
<Premium plugin name 1> <Premium plugin name 1 version> includes the following <fixes, changes, improvements>.
Spell Checker
The TinyMCE 8.5.0 release includes an accompanying release of the Spell Checker premium plugin.
Spell Checker includes the following change.
The Spell Checker plugin now uses the content_language option as the default language, falling back to spellchecker_language if not set
Previously, the Spell Checker plugin relied exclusively on the spellchecker_language option to determine its default proofing language. There was no way to align the spellchecker language with the content language set on the editor.
In TinyMCE 8.5.0, the Spell Checker plugin now reads the new content_language option first and uses its value as the default proofing language. If content_language is not set, the plugin falls back to spellchecker_language. The spellchecker_language option will be deprecated in a future major version; integrators are encouraged to use content_language instead.
For information on the Spell Checker plugin, see: Spell Checker.
Accompanying Enhanced Skins & Icon Packs changes
The TinyMCE 8.5.0 release includes an accompanying release of the Enhanced Skins & Icon Packs.
Enhanced Skins & Icon Packs
The Enhanced Skins & Icon Packs release includes the following updates:
The Enhanced Skins & Icon Packs were rebuilt to pull in the changes also incorporated into the default TinyMCE 8.5.0 skin, Oxide.
For information on using Enhanced Skins & Icon Packs, see: Enhanced Skins & Icon Packs.
Additions
TinyMCE 8.5.0 also includes the following addition<s>:
New content_language option to set the lang attribute on the iframe’s html element or the inline editor’s target element
Previously, TinyMCE had no option to set the default content language of the editor. In classic (iframe) mode, the html element inside the editor iframe had no lang attribute, which failed to meet accessibility standards such as WCAG Success Criterion 3.1.1. Screen readers and other assistive technologies could not determine the language of the editor content.
In TinyMCE 8.5.0, the new content_language option sets a lang attribute on the html element of the editor’s iframe in classic mode, or on the target element in inline mode. This is separate from the language option, which controls the UI language. The Spell Checker plugin also now defaults to content_language when set, before falling back to spellchecker_language.