TinyMCE 8.9.0

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 8.9.0 was released for TinyMCE Enterprise and Tiny Cloud on Wednesday, August 26th, 2026. These release notes provide an overview of the changes for TinyMCE 8.9.0, including:

[[new-premium-plugin<s>]] == New Premium plugin<s>

The following new Premium plugin was released alongside TinyMCE 8.9.0.

<Premium plugin name>

The new Premium plugin, <Premium plugin name> // description here.

For information on the <Premium plugin name> plugin, see xref:<plugincode>.adoc[<Premium plugin name>].

New Open Source plugin

The following new Open Source plugin was released alongside TinyMCE 8.9.0.

<Open source plugin name>

The new open source plugin, <Open source plugin name> // description here.

For information on the <Open source plugin name> plugin, see xref:<plugincode>.adoc[<Open source plugin name>].

Accompanying Premium plugin changes

The following premium plugin updates were released alongside TinyMCE 8.9.0.

<Premium plugin name 1> <Premium plugin name 1 version>

The TinyMCE 8.9.0 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>.

<Premium plugin name 1 change 1>

For information on the <Premium plugin name 1> plugin, see: xref:<plugincode>.adoc[<Premium plugin name 1>].

TinyMCE AI

The TinyMCE 8.9.0 release includes an accompanying release of the TinyMCE AI premium plugin.

TinyMCE AI includes the following improvement.

Improved error messages shown when adding a file context source fails

Previously, when the AI service rejected a file added as a context source in the Chat sidebar, the sidebar reported the failure using the message returned by the service, such as Content too large. Those messages described the service response rather than the file, so users could not tell which property of the file caused the failure, or what to try instead.

In TinyMCE 8.9.0, the TinyMCE AI plugin shows a message for each file failure it can identify:

  • A file that is too large reports This file is too large to add. Try a smaller one.

  • A file with too many pages reports This file has too many pages to process. Try one with fewer pages.

  • A file of an unsupported type reports This file type isn't supported. Try a different file.

When the cause cannot be identified, the plugin shows This file can't be added. Try a smaller file, or a different file type.

For information on the TinyMCE AI plugin, see: TinyMCE AI.

Accompanying Premium plugin end-of-life announcement

The following Premium plugin has been announced as reaching its end-of-life:

<Premium plugin name eol>

TinyMCE’s xref:<plugincode>.adoc[<Premium plugin name eol>] plugin will be deactivated on <month> <DD>, <YYYY>, and is no longer available for purchase.

Accompanying open source plugin end-of-life announcement

The following open source plugin has been announced as reaching its end-of-life:

<Open source plugin name eol>

TinyMCE’s xref:<plugincode>.adoc[<Open source plugin name eol>] plugin will be deactivated on <month> <DD>, <YYYY>, and is no longer available for purchase.

Accompanying Enhanced Skins & Icon Packs changes

The TinyMCE 8.9.0 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 8.9.0 skin, Oxide.

For information on using Enhanced Skins & Icon Packs, see: Enhanced Skins & Icon Packs.

Improvements

TinyMCE 8.9.0 also includes the following improvement<s>:

<TINY-vwxyz 1 changelog entry>

Additions

TinyMCE 8.9.0 also includes the following addition<s>:

<TINY-vwxyz 1 changelog entry>

Changes

TinyMCE 8.9.0 also includes the following change<s>:

<TINY-vwxyz 1 changelog entry>

Removed

TinyMCE 8.9.0 also includes the following removal<s>:

<TINY-vwxyz 1 changelog entry>

Bug fixes

TinyMCE 8.9.0 also includes the following bug fix<es>:

<TINY-vwxyz 1 changelog entry>

Security fixes

TinyMCE 8.9.0 includes <a fix | fixes for the following security issue<s>:

<TINY-vwxyz 1 changelog entry>

Deprecated

TinyMCE 8.9.0 includes the following deprecation<s>:

The <plugin> configuration property, <name>, has been deprecated

Known issues

This section describes issues that users of TinyMCE 8.9.0 may encounter and possible workarounds for these issues.

There <is one | are <number> known issue<s> in TinyMCE 8.9.0.

<TINY-vwxyz 1 changelog entry>