HTML editable controls: <input> disabled by default <textarea> Elements with contenteditable attribute set to ‘true’: <div> <iframe> * The dialog mode of WProofreader is not supported with real-time collaboration features or multi-root editor modes of CKEditor 5. ** Integration with Slate.js and Draft won't work properly with IE11. WProofreader also has a plugin for WordPress 4.x and WordPress 5.x. For more details, check the official repository of WProofreader plugin for WordPress.HTML integration WYSIWYG editors