tinymce-docs/_includes/configuration/spellchecker_on_load.md

spellchecker_on_load

Note: Removed in Spell Checker Pro 2.0 (TinyMCE 5.2). Spell Checker Pro will now always run on editor initialization. To disable Spell Checker Pro on load, use spellchecker_active.

This option runs the spellchecker when the contents of the editor is loaded.

Type: Boolean

Default Value: false

Possible Values: true, false

Example: Using spellchecker_on_load

tinymce.init({
  selector: 'textarea',
  plugins: 'tinymcespellchecker',
  spellchecker_on_load: true
});