The ability to track changes in word processing documents was a groundbreaking innovation. Microsoft Word led the way in that development, and Word users have been using the feature ever since.
Word: Track changes and comments
The Track Changes feature is now considered standard in every word processing app. We'll show you how to track changes in Microsoft Word's online, mobile, and desktop apps. You can also track changes in other apps like Google Docs or Microsoft Excel.
When you track changes in a Word document, you make it easy for someone else (or for yourself in the future) to discover proposed changes and decide — change by change — whether to accept it and make it permanent or to reject it.
Anyone can use Microsoft Word Online for free by signing up for a free Microsoft account. After you sign in and start a new Microsoft Word document (or open an existing document), follow these steps to track changes in Word Online.