Privacy Policy

Last updated: March 31, 2026

LLM QualAnalyzer is a free, open-source Chrome extension built for academic researchers. This privacy policy explains how the extension handles your data.

The short version

LLM QualAnalyzer does not collect, store, or transmit your data to any server we operate. We have no servers. All your data stays in your browser and your own Google Workspace.

What data the extension accesses

Google account information

When you sign in with Google, the extension receives your name, email address, and profile picture through Google OAuth. This information is used only to display your account in the extension and to authenticate API calls to Google on your behalf. It is stored locally in your browser's Chrome storage and is never sent anywhere else.

Google Workspace data

The extension accesses your Google Docs (read-only) and Google Sheets (read and write) through Google's official APIs, using the permissions you grant during sign-in. This access is used solely to read your research data from Docs, write analysis results to Sheets, and support DOCX file conversion through Google Drive. The extension does not access any files you have not explicitly opened or selected.

LLM API keys

You provide your own API keys for third-party LLM services (such as OpenAI, Anthropic, or OpenRouter). These keys are stored locally in your browser's Chrome storage. They are sent only to the respective API provider when you run an analysis job, and to no one else.

Analysis prompts and results

The prompts you create and the analysis results you receive are stored locally in your browser. When you run a job, your prompt and the selected data are sent to the LLM provider you chose (e.g., OpenAI, Anthropic, or OpenRouter) for processing. The results are written back to your Google Sheet. No prompts or results are sent to us or any other party.

What data we collect

None. We do not operate any servers, databases, or analytics services. We do not collect usage data, telemetry, crash reports, or any other information about how you use the extension.

Third-party services

The extension communicates with the following third-party services, but only when you initiate an action:

Each of these services has its own privacy policy. We encourage you to review them.

Data storage and retention

All extension data (settings, API keys, job history, prompts) is stored locally in your browser using Chrome's built-in storage API. This data persists until you either clear it through the extension's settings or uninstall the extension, at which point Chrome removes all associated data.

Data sharing

We do not share, sell, rent, or trade any user data with anyone. We cannot, because we do not have access to it.

Children's privacy

This extension is designed for academic researchers and is not directed at children under 13.

Changes to this policy

If we update this privacy policy, we will update the "Last updated" date at the top. Since the extension is open source, all changes are visible in the public repository.

Contact

If you have questions about this privacy policy, you can reach the developer at maxlvhao@gmail.com.

Open source

LLM QualAnalyzer is open-source software. You can review the complete source code at github.com/maxlvhao/llm_qual_analyzer to verify the claims made in this privacy policy.