TinyMCE 5.2


TinyMCE 5.2 was released for TinyMCE Enterprise and Tiny Cloud on Monday, March 9th, 2020. It includes TinyMCE 5.2.0 and additional changes to premium plugins. These release notes provide an overview of the changes for TinyMCE 5.2, including:

This is the Tiny Cloud and TinyMCE Enterprise release notes. For information on the latest community version of TinyMCE, see: TinyMCE Changelog.

TinyMCE 5.2 new features and enhancements

The following new features and enhancements were added for the TinyMCE 5.2 release.

Alternative toolbar and menu bar placement with the toolbar_location setting

The toolbar_location option is used to position the toolbar and menu bar. Setting this option to bottom positions the toolbar and menu bar below the content area.

For information on using the toolbar_location setting, see: User interface options - toolbar_location.

Changed toolbar_drawer to toolbar_mode

The toolbar_drawer option has been deprecated and replaced with the toolbar_mode option. toolbar_mode provides the same functionality as toolbar_drawer. The name change was made to reflect the range of settings available for this option.

The toolbar_drawer: false setting has been deprecated; the behavior is now provided by the toolbar_mode: 'wrap' setting.

For information on the toolbar_mode option, see: User interface options - toolbar_mode.

New group toolbar button

The new toolbar_groups setting and addGroupToolbarButton registry API can be used to create a toolbar button that displays a collection of other toolbar buttons in a pop-up.

Group toolbar button example

For information on using the toolbar_groups setting, see: User interface options - toolbar_groups. For information on using the addGroupToolbarButton API, see: Types of toolbar buttons - Group button.

Enterprise-grade user interface translations available on Tiny Cloud

Tiny Cloud deployments now have access to professionally translated language packs for localizing the TinyMCE user interface.

For a list of the available user interface languages, see: Localization options - language.

A new placeholder setting

The new placeholder option adds placeholder content that will be shown when the editor is empty.

For information on using the placeholder setting, see: User interface options - placeholder.

New option to assist with marking images as decorative for accessibility purposes

The a11y_advanced_options setting adds an option to set an image as decorative in the following dialogs:

  • The Insert/Edit Image dialog.

  • The Accessibility Checker error dialog for images without alternative text or the role="presentation" attribute.

For information on the a11y_advanced_options, including the impact on the a11ychecker_allow_decorative_images setting, see:

Modify the Quick Image toolbar using the quickbars_image_toolbar setting

The quickbars_image_toolbar option configures the Quick Image toolbar provided by the quickbars plugin. To change the buttons on the Quick Image toolbar, provide a space-separated string of toolbar button names. To disable the Quick Image toolbar, set quickbars_image_toolbar to false.

For information on using the quickbars_image_toolbar setting, see: Quick Toolbars plugin - quickbars_image_toolbar.

Use custom Prism versions and languages when highlighting code samples

The codesample plugin now has the ability to use a custom Prism.js version and a custom languages list when highlighting code samples in the editor. This can be enabled by including the custom Prism.js script and language add-ons on the page and setting the new codesample_global_prismjs option to true.

For information on using the codesample_global_prismjs setting, see: Code sample plugin - codesample_global_prismjs.

New tinymce.dom.TextSeeker API

The TextSeeker class is used for walking across text nodes to match a predicate.

For information on using the TextSeeker API, see: TinyMCE APIs - tinymce.dom.TextSeeker.

Updated the default TinyMCE table icons

The TinyMCE icons for table-related toolbar buttons have been updated to better match the icons used elsewhere in the product.

This change applies to the default TinyMCE icon pack.

For an updated list of TinyMCE icons, see: Available icons.

A new link_default_protocol option has been added to the Autolink and Link plugins. This option allows the default protocol to be set for links where a protocol has not been supplied by the user.

Accompanying Premium Plugin changes

The following premium plugins updates were released alongside TinyMCE 5.2.

Accessibility Checker 2.2.0

The TinyMCE 5.2 release includes an accompanying release of the Accessibility Checker premium plugin.

Accessibility Checker 2.2.0 has been updated:

  • To include a new check for duplicate id values.

  • To improve decorative image checks.

  • To accommodate the a11y_advanced_options setting added in TinyMCE 5.2.

For information on the a11y_advanced_options setting, see: Accessibility Checker plugin.

Checklist 1.1.0

The TinyMCE 5.2 release includes an accompanying release of the Checklist premium plugin.

Checklist 1.1.0 adds a new optional checklist menu item.

For information on the checklist plugin, see: Checklist plugin.

The TinyMCE 5.2 release includes an accompanying release of the Link Checker premium plugin.

Link Checker 2.1.0 adds a new linkchecker_preprocess function for adjusting links before link checking.

For information on the linkchecker_preprocess option, see: Link Checker plugin - linkchecker_preprocess.

Page Embed 1.1.0

The TinyMCE 5.2 release includes an accompanying release of the Page Embed premium plugin.

Page Embed 1.1.0 adds a new tiny_pageembed_inline_styles setting which inlines all styles, while also keeping CSS classes, when rendering the embed content. This is useful when the additional CSS classes can’t be added to your site.

For information on inlining page embed styles, see: Page Embed plugin - Inline styles for page embeds.

Permanent Pen 1.1.0

The TinyMCE 5.2 release includes an accompanying release of the Permanent Pen premium plugin.

Permanent Pen 1.1.0 adds support for working with input method editors (IMEs), which are used for inserting non-ascii characters.

PowerPaste 5.2.1

The TinyMCE 5.2 release includes an accompanying release of the PowerPaste premium plugin.

PowerPaste 5.2.1 provides a fix for PowerPaste not respecting the cache_suffix setting.

Premium Skins and Icon Packs 1.2

The TinyMCE 5.2 release includes an accompanying release of the Premium Skins and Icon Packs premium plugin.

Premium Skins and Icon Packs 1.2 includes:

For information on using premium skins and icon packs, see: Premium Skins and Icon Packs.

Spellchecker Pro 2.0

The TinyMCE 5.2 release includes an accompanying release of the Spellchecker Pro premium plugin.

Spellchecker Pro 2.0:

  • Adds new functionality to support spell checking content written in multiple languages.

  • Adds new language and spellcheckdialog toolbar buttons.

  • Allows the spell checking dialog to be enabled alongside the spell checking as-you-type functionality.

  • Includes a new internal engine to improve the document scanning speed.

  • Removes the spellchecker_on_load setting.

For information on the Spell Checker Pro plugin, see: Spell Checker Pro plugin.

Minor changes for TinyMCE 5.2

TinyMCE 5.2 introduces the following minor changes:

  • Adds the ability to apply formats to spaces.

  • Adds a drop shadow below the toolbar while in sticky mode and introduced Oxide variables to customize it when creating a custom skin.

  • Adds a quickbars_image_toolbar setting to allow for the image quickbar to be configured or disabled.

  • Adds the loading attribute to the default schema for iframe and img . Patch contributed by ataylor32.

  • Adds new getNodeFilters and getAttributeFilters functions to the editor.serializer API.

  • Adds error message events that fire when a resource loading error occurs.

  • Improves security by changing the default schema to disallow onchange for select elements.

  • Changes iframe mode to set selection on content init if selection doesn’t exist.

  • Changes table related icons to align them with the visual style of the other icons.

  • Improves the visual appearance of the color input field.

  • Changes the fake caret container to use forced_root_block when possible.

  • Changes the requireLangPack API to wait until the plugin has been loaded before loading the language pack.

  • Changes the formatter so style_formats are registered before the initial content is loaded into the editor.

  • Changes media plugin to use https protocol for media urls by default.

  • Improves security by changing the editor parser to treat CDATA nodes as bogus HTML comments to match the HTML parsing specification. A new preserve_cdata setting has been added to preserve CDATA nodes if required.

General bug fixes

TinyMCE 5.2 provides fixes for the following bugs:

  • Fixed the incorrect parsing of malformed/bogus HTML comments.

  • Fixed the quickbars selection toolbar appearing on non-editable elements.

  • Fixed a bug with alignment toolbar buttons sometimes not changing state correctly.

  • Fixed the codesample toolbar button not toggling when selecting code samples other than HTML.

  • Fixed content incorrectly scrolling to the top or bottom when pressing enter if the content was already in view.

  • Fixed the scrollIntoView API potentially hiding elements behind the toolbar.

  • Fixed the editor not respecting the resize_img_proportional setting due to legacy code.

  • Fixed the floating toolbar drawer flickering in inline mode.

  • Fixed an issue where the template plugin dialog would be indefinitely blocked on a failed template load.

  • Fixed the mscontrolselect event not being unbound on the Microsoft Internet Explorer and Microsoft Edge browsers.

  • Fixed the Confirm dialog footer buttons to only highlight the "Yes" button.

  • Fixed the file_picker_callback functionality for the Image, Link and Media plugins.

  • Fixed an issue where the floating toolbar drawer would sometimes break if the editor is resized while the drawer is open.

  • Fixed an incorrect external_plugins loading error message.

  • Fixed the resize handler not being hidden for ARIA purposes. Patch contributed by Parent5446.

  • Fixed an issue where content could be lost if a misspelled word was selected and spellchecking was disabled.

  • Fixed validation errors in the CSS where certain properties had the wrong default value.

  • Fixed an issue where forced root block attributes were not applied when removing a list.

  • Fixed an issue where the element path was not cleared when there are no parents.

  • Fixed an issue where width and height in svg icons containing rect elements were overridden by the CSS reset.

  • Fixed an issue where uploading images with a query parameter and the images_reuse_filename setting enabled would generate an invalid URL.

  • Fixed the closeButton property not working when opening notifications.

  • Fixed keyboard flicker when opening a context menu on mobile.

  • Fixed issue where plus icon svg contained strokes.

Deprecated features

The toolbar_drawer option has been deprecated with the release of TinyMCE 5.2. The toolbar_drawer option was renamed to toolbar_mode. This change was made to reflect the range of new settings available for this option.

For information on the toolbar_mode option, see: User interface options - toolbar_mode.

Known issues

This section describes issues that users of TinyMCE 5.2 may encounter, as well as possible workarounds for these issues.


Translations missing for new user interface options


New user interface features do not have translations to other supported languages at this time. This includes text related to:


No known workaround at the time of release.

Floating toolbar disconnects from the toolbar in inline mode


This issue will be resolved with the release of TinyMCE 5.2.1.

If the editor is set to inline: true, and toolbar_drawer or toolbar_mode is set to 'floating', such as:

  selector: 'div',
  inline: true,
  toolbar_drawer: 'floating'


  selector: 'div',
  inline: true,
  toolbar_mode: 'floating'

The floating component of the toolbar will disconnect from the primary toolbar when additional content is added to the editor, causing the content area to resize (such as adding new lines).


Set toolbar_drawer or toolbar_mode to an alternative mode until the issue is resolved. For a list of alternative toolbar modes, see: User interface options - toolbar_mode.

Microsoft Internet Explorer will incorrectly auto focus the editor when TinyMCE is initialized


This issue will be resolved with the release of TinyMCE 5.2.1.

When a webpage containing TinyMCE is loaded on Microsoft Internet Explorer, the web browser focus will automatically move to the editor when the editor is loaded.


No known workaround at the time of release.

Incorrect positioning of inline dialogs when using sticky toolbars and the bottom toolbar


Inline dialogs, such as the Search and Replace dialog and the Accessibility Checker dialog, will be positioned incorrectly when sticky toolbar and the bottom toolbar are used together. For example:

  selector: 'textarea',
  toolbar_sticky: true,
  toolbar_location: 'bottom'

Custom inline dialogs are also affected.


To avoid this issue, either:

  • Do not use the new toolbar_location option until the issue is resolved.

  • Set toolbar_sticky to false before setting toolbar_location: 'bottom' until the issue is resolved.

Upgrading to the latest version of TinyMCE 5

The procedure for upgrading to the latest version of TinyMCE 5 depends on the deployment type.

Upgrading Tiny Cloud

Tiny Cloud provides the latest enterprise version of TinyMCE. For information on configuring Tiny Cloud, see: the Cloud deployment guide.

Upgrading TinyMCE Self-hosted manually

To upgrade to TinyMCE 5.10 using a manually downloaded package:

  1. Backup the tinymce/ directory so any customizations can be restored after the upgrade.

    Customizations for TinyMCE are typically stored in the following directories:

    ├── icons/
    ├── langs/
    ├── plugins/
    ├── skins/
    │   ├── content/
    │   └── ui/
    └── themes/
  2. Download the latest version of TinyMCE.

    • For the TinyMCE Community Version, download tinymce_<VERSION>.zip from Get TinyMCE - Self-hosted releases, where <VERSION> is the latest version of TinyMCE.

    • For the TinyMCE Enterprise Version, download the TinyMCE Enterprise Bundle from Tiny Account > Downloads. The downloaded file will be named enterprise_latest.zip.

  3. Extract the downloaded .zip file to a temporary location.

  4. (If required) Install the latest language packs from Get TinyMCE - Language Packages.

  5. Copy customizations to the new tinymce/ directory. Ensure that only custom changes are added the new tinymce/ directory, such as:

    • Custom icons packs

    • Custom plugins

    • Custom skins

    • Custom themes

  6. Delete the existing tinymce/ directory and replace with the new tinymce/.

To simplify the upgrade process to future versions of TinyMCE:

  1. Host the TinyMCE customizations outside of the tinymce/ directory.

  2. Update your TinyMCE configuration as required:

    • Set the location of content CSS customizations using content_css.

    • Set the location of custom plugins using external_plugins.

    • Set the location of custom icon packages using icons_url instead of icons.

    • Set the location of custom localization packages using language_url instead of language.

    • Set the location of custom skin packages using skin_url instead of skin.

    • Set the location of custom themes using theme_url instead of theme.