Firefox Extension

The Firefox Extension delivers highly accurate AI detection and plagiarism checks directly within Google Docs and Firefox, making it a seamless part of your core workflow for writing and reviewing content.

Designed for writers, students, educators, editors, and publishers, the extension helps you maintain transparency, prove authorship, and reduce false positives with advanced Writer Replay and auto-typing detection.

Note: No AI detector is 100% accurate. AI scores should always be reviewed using human judgment.

What You Can Do with the Firefox Extension

• Scan Google Docs for AI-generated text and plagiarism
• Scan any web page or selected text in Firefox
• Watch a character-by-character replay of how a document was written
• Detect non-human typing behaviour, including auto-typing tools
• Generate shareable, read-only reports
• View AI scores, plagiarism scores, word counts, paste activity, contributors, and revisions

How It Works

In Google Docs

1. Install the Originality.ai Firefox Extension.
2. Click the Originality.ai icon and log in.
3. Open a Google Doc.
4. Click Scan to analyze the document for AI-generated writing and plagiarism.
5. Optional: Click Video to watch Writer Replay.
6. Review the Auto-Typing Detection results and Human Typing Score for additional insights.

On a Web Page

1. Install the extension and log in.
2. Navigate to any web page in Firefox.
3. Click the extension icon.
4. Choose whether to scan the full page or selected text.

Shareable Reports

Generate read-only reports that include:

• AI score
• Plagiarism score
• Writer Replay
• Typing behaviour insights

Reports can be shared with instructors, editors, managers, or clients to support transparency and verify authorship.

Troubleshooting

Use the extension troubleshooting guide if the Originality.ai Firefox Extension is missing, not responding, unable to scan, or producing incomplete results.

Key Features Explained

AI and Plagiarism Detection in Google Docs

Scan content directly inside Google Docs without disrupting your workflow.

Features include:

• AI score
• Plagiarism score
• Automatic model selection for non-English text
• Shareable reports
• Results synced with the Originality.ai web app

Writer Replay

Writer Replay provides a character-by-character video of the writing process using Google Docs revision history.

You can review:

• A sped-up replay of the writing process
• Paste counts and paste locations
• Word and character counts
• Contributors and contribution ratios
• Revision history

Auto-Typing Detection and Human Typing Score

Auto-Typing Detection analyzes typing behaviour patterns rather than the content itself.

It evaluates:

• Inter-keystroke timing
• Typing cadence
• Burst patterns
• Paste behaviour
• Correction patterns

The system provides:

• A Human Typing Score
• Supporting behavioural insights

What It’s Used For

• Academic integrity reviews
• Authorship verification
• Identifying automated typing tools
• Screening documents at scale

Important: The Human Typing Score is a supporting signal, not a final verdict. Always review it alongside the AI and plagiarism scores.

Who Is It For?

✍️ Writers

Prove your work is your own and confidently respond to AI-writing accusations.

🎓 Students

Demonstrate academic integrity and show that your assignment was written naturally.

🧑‍🏫 Teachers

Identify AI-written, auto-typed, or human-written work with greater transparency.

📰 Editors and Publishers

Protect your brand and reduce AI-generated or low-quality submissions.

🏢 Businesses and Agencies

Validate freelance work and maintain quality control at scale.

Updated on: 11/09/2026