This extension spellchecks markdown cells in Google Colab notebooks, perfect for proofreading your homework, presentations, or notes. Spellchecking runs completely offline, locally in the extension. No API key or network access is required to function. You can teach the spellchecker your own words: click a flagged word to save it or add entries in Settings. Everything is saved in your browser’s local storage only. Thank you for your interest!