Help Center — answers in plain English

Check a Google Doc for plagiarism and AI writing, highlight matches, and leave out quotes and references.

• ›How to Check a Google Doc for AI Writing
• ›How to Check for Plagiarism in Google Docs
• ›How to Install and Use the Google Docs Add-on
• ›Highlighting Matches in Your Doc (and Clearing Them)
• ›Leave Out Quotes and Your Reference List

Install the extension, check any text box or highlighted text, and control where the buttons appear.

• ›How to Install the Chrome Extension and Sign In
• ›Check Any Text Box or Highlighted Text for Plagiarism and AI
• ›Hide the Check Button or Check Bar on a Site
• ›Side Panel or Check Button Not Showing? Troubleshooting

What plagiarism and AI scores mean, and what Google Docs can and can’t check on its own.

• ›Can Google Docs Detect AI Writing?
• ›Does Google Docs Have a Plagiarism Checker?
• ›How to Read Your Plagiarism and AI Scores

Cite websites, DOIs and books in APA, MLA, Chicago, Harvard and more.

• ›How to Add Citations in Google Docs
• ›How to Cite a Website in APA, MLA, Chicago or Harvard

What happens to the text you check, word limits, and free guest checks.

• ›What Happens to the Text I Check?
• ›Word Limits: Minimum 50 Words and Guest Limits