Revision History is a Chrome extension for educators that provides detailed insights into how students create their Google Docs and Slides documents. It replays the document creation process, tracks editing history, detects copy/paste events, and analyzes writing patterns to flag unusual behavior such as sudden large text additions or inconsistent writing speeds. Trusted by over 200,000 educators, the tool helps teachers assess student effort and academic integrity. It integrates with Google Classroom and works seamlessly with any Google Doc or Slide. The free plan supports up to 150 documents per month, while premium plans offer unlimited analysis starting at $2.67/month (billed annually).