CKEditor 4 | CKEditor 5
--- | ---
a11yhelp | N/A
about | N/A
ajax | N/A
autocomplete | Partially covered by Mentions
autoembed | Auto media embed
autogrow | Core (see Classic editor and setting its height)
autolink | Autolink
balloonpanel | Balloon panel view
balloontoolbar | Contextual balloon
basicstyles | Basic styles
bbcode | N/A
bidi | Partially available via configuration and the Language plugin
blockquote | Block quote
button | Button view
ckfinder | CKFinder
clipboard | Clipboard
cloudservices | Cloud Services
codesnippet | Partially covered by Code blocks
codesnippetgeshi | N/A
colorbutton | Font color and Font background color
colordialog | N/A
contextmenu | N/A
copyformatting | Format painter
devtools | N/A
dialog | N/A
dialogadvtab | N/A
dialogui | N/A
div | Partially covered by General HTML Support
divarea | Core (Classic editor)
docprops | N/A
easyimage | Easy Image
editorplaceholder | Editor placeholder
elementspath | N/A
embed | Media embed
embedbase | Media embed configuration
embedsemantic | Media embed configuration
emoji | N/A
enterkey | Enter (except for the `ENTER_DIV` option)
entities | N/A
fakeobjects | Custom widgets
filebrowser | See image upload
filetools | See image upload
find | Find and replace
flash | N/A
floatingspace | Inline editor
floatpanel | Partially covered by the createDropdown() utility
font | Font size and Font family
format | Partially covered by the Heading and Paragraph features
forms | N/A
horizontalrule | Horizontal line
htmlwriter | A custom HTML writer can be implemented using the HtmlWriter interface
iframe | HTML embed
iframedialog | N/A
image | Image
image2 | Image
imagebase | Image
indent | Indent
indentblock | Introduced by IndentBlock, exposed by Indent
indentlist | Introduced by ListEditing, exposed by Indent
justify | Text alignment
language | Text part language
lineutils | Partially covered by Widget type around
link | Link
list | List
listblock | Dropdowns and the addListToDropdown() utility
liststyle | List properties
magicline | Widget type around
mathjax | MathType
maximize | N/A
mentions | Mentions
menu | Dropdowns
menubutton | Dropdowns
newpage | N/A
notification | Notification (provides only the engine, without UI)
notificationaggregator | N/A
pagebreak | Page break
panel | UI library
panelbutton | UI library
pastefromgdocs | Paste from Google Docs
pastefromlibreoffice | N/A
pastefromword | Paste from Word
pastetext | Paste plain text
pastetools | N/A
placeholder | Custom implementation
popup | N/A
preview | N/A
print | N/A
removeformat | Remove format
resize | N/A
richcombo | DropdownView
save | See Saving data
selectall | Select all
sharedspace | Custom implementation - see multi-root editor
showblocks | N/A
showborders | Table properties
smiley | N/A
sourcearea | Source editing
sourcedialog | N/A
specialchar | Special characters
stylescombo | Style
stylesheetparser | N/A
tab | See Keyboard support
table | Table
tableresize | Table column resize
tableselection | Table selection
tabletools | Table properties
templates | Template
textmatch | N/A
textwatcher | Text watcher
toolbar | Editor toolbar
uicolor | See Theme customization
undo | Undo
uploadfile | See image upload
uploadimage | See image upload
uploadwidget | See image upload
widget | Widget
widgetselection | Widget
wysiwygarea | Core (Classic editor - there is no iframe-based editor implementation in CKEditor 5)
xml | XML data processor