Your Privacy Matters

We built LexifyAI to help you understand text instantly—not to invade your privacy.

Minimal Data

We only know your email. No chat history stored.

No Tracking

Your browsing data stays private. We don't track you.

Encrypted

BYOK keys encrypted with AES-256. Your data is secure.

Privacy Policy

Last updated: October 16, 2025

Welcome to the Privacy Policy for the LexifyAI Chrome Extension. We are committed to protecting your privacy and being transparent about how we handle your data.

By using LexifyAI, you agree to this Privacy Policy. If you disagree, please do not install or use the extension.

1. Information We Do NOT Collect

We believe in minimal data collection:

  • Browsing History – We never track which websites you visit
  • Chat or Explanation History – Your questions and AI responses are NOT stored. Processed in real-time and immediately discarded
  • Full Page Content – Only the specific text you select is processed
  • Passwords or Form Data – No access to credentials or inputs
  • Location Data – We don't track your physical location
  • Keystroke Logging – We never monitor what you type
  • Clipboard Content – Not accessed unless you explicitly paste

2. Information We DO Collect

⚠️ Authentication Required

LexifyAI Chrome Extension requires you to log in to use any features. This ensures secure access to AI explanations and proper quota management.

A. Account Information (Required)

  • Email Address – To create and identify your account
  • Authentication Token – Stored locally in your browser to keep you logged in
  • Usage Statistics – Request count and token usage for quota management (not the actual text content)

B. When You Use Explanation Features

  • Selected Text (Temporary Only) – Sent to AI for processing, then immediately discarded. Not stored permanently.
  • Language Preference – Stored locally in your browser only
  • Page Context (Optional) – URL and title sent for better context, not logged or stored

C. BYOK (Bring Your Own Key) Users (Optional)

  • API Key (Encrypted) – If you use your own OpenAI key, it's encrypted with AES-256
  • Model Preference – Your chosen AI model stored to route requests

Note: In BYOK mode, requests go directly to OpenAI using YOUR key. OpenAI's privacy policy applies.

3. How We Use Your Information

We use collected data solely to:

  1. Provide real-time AI explanations
  2. Manage usage quotas (count only, not content)
  3. Sync settings across devices (if logged in)
  4. Secure BYOK API keys with encryption
  5. Troubleshoot technical issues

We will NEVER:

  • Store your explanation requests or AI responses
  • Sell your data to third parties
  • Use your data for advertising
  • Train AI models on your private questions
  • Share information with data brokers

4. Data Storage and Security

Local Storage (In Your Browser)

Most data stays on your device:

  • Authentication tokens
  • Language preferences
  • Settings
  • Temporary selected text (cleared after explanation)

Server-Side Storage (Minimal)

What we store:

  • Email and account ID
  • Total usage count (e.g., "50 requests this month")
  • BYOK API key (encrypted with AES-256)

What we DON'T store:

  • The text you selected for explanation
  • AI-generated explanations
  • Page URLs or browsing history

Explanation Processing Flow:

  1. You select text and click "Explain"
  2. Text sent via encrypted HTTPS to our server
  3. Server forwards to AI (Google Vertex AI or OpenAI)
  4. AI returns explanation
  5. Displayed in your browser
  6. All text immediately discarded from memory

Encryption Standards

  • In Transit: TLS 1.3 (HTTPS)
  • At Rest: BYOK keys encrypted with AES-256-GCM
  • Authentication: Tokens securely hashed

5. Third-Party AI Services

Google Cloud Vertex AI (Hosted Mode)

When using our hosted service:

OpenAI (BYOK Mode)

When using your own OpenAI API key:

6. Data Retention

Account Data (While Active):

  • Email and account information retained while your account is active
  • Usage statistics (request count, token usage) retained for quota management
  • BYOK API keys (encrypted) retained until you delete them

Temporary Data (Not Stored):

  • Explanation requests processed in real-time only
  • AI responses displayed then immediately discarded
  • Page context used only during processing

7. Your Rights

You have full control:

  • Access your data (email, usage stats)
  • Delete BYOK API key anytime (if you're using BYOK mode)
  • Export your settings and preferences
  • Switch between Hosted and BYOK modes
  • Log out anytime to stop using the service
  • Request data corrections or updates

Contact us at: jlptexamai@gmail.com

8. Cookies and Tracking

We do NOT use:

  • Tracking cookies
  • Google Analytics
  • Advertising pixels
  • Fingerprinting

We DO use:

  • Session cookies (authentication only)
  • Local storage (preferences only)

9. Contact Us

Questions, concerns, or data requests?

Our Commitment to Privacy

At LexifyAI, privacy isn't just a policy—it's our foundation. We built this extension with one goal: help you understand text instantly, without invading your privacy.

No chat history stored
No tracking or profiling
Encrypted BYOK keys
Real-time processing only

🔐 Privacy-First. AI-Powered. Always Transparent.

Terms of Service

Last updated: October 16, 2025

By using LexifyAI Chrome Extension, you agree to these Terms of Service.

1. Acceptance of Terms

By installing and using the LexifyAI Chrome Extension, you agree to be bound by these Terms of Service. If you do not agree to these terms, please do not use the extension.

2. Description of Service

LexifyAI provides AI-powered text explanation services through a Chrome browser extension. The service includes:

  • Real-time text explanations using AI technology
  • Multiple language support
  • Subscription-based usage quotas
  • Optional BYOK (Bring Your Own Key) mode

3. User Account

You must create an account to use LexifyAI. You are responsible for:

  • Maintaining the security of your account credentials
  • All activities that occur under your account
  • Notifying us immediately of any unauthorized access

4. Acceptable Use

You agree NOT to:

  • Use the service for any illegal or unauthorized purpose
  • Attempt to reverse engineer or extract source code from the extension
  • Abuse or overload our servers
  • Share your account with others
  • Use automated scripts or bots to access the service

5. Subscription and Payment

LexifyAI offers both free and paid subscription plans:

  • Free plan includes limited monthly quota for explanations
  • Paid plans provide higher quotas and additional features
  • Subscriptions are billed monthly or annually
  • You may cancel your subscription at any time through our website
  • Refunds are handled on a case-by-case basis

6. Service Availability

We strive to provide reliable service, but we do not guarantee 100% uptime. We reserve the right to modify, suspend, or discontinue the service at any time without prior notice.

7. Intellectual Property

All content, features, and functionality of LexifyAI, including but not limited to software, text, graphics, logos, and icons, are the exclusive property of LexifyAI and are protected by copyright and trademark laws.

8. Limitation of Liability

LexifyAI is provided "as is" without warranties of any kind. We are not liable for any damages arising from your use of the service, including but not limited to direct, indirect, incidental, or consequential damages.

9. Changes to Terms

We may update these Terms of Service from time to time. When we do, we will post the updated terms on this page and update the "Last updated" date. Your continued use of the service after changes constitutes acceptance of the new terms.

10. Contact

If you have questions about these Terms of Service, contact us at: jlptexamai@gmail.com

Cookie Policy

Last updated: October 16, 2025

LexifyAI uses minimal cookies to provide and improve our service.

1. What Are Cookies

Cookies are small text files that are stored on your device when you visit a website or use a browser extension. They help us provide a better, faster, and safer experience.

2. Cookies We Use

Essential Cookies (Required)

These cookies are necessary for the extension to function:

  • Authentication cookies - Keep you logged in between browser sessions
  • Session cookies - Maintain your active session with our API

Preference Cookies

Stored in your browser's local storage (not traditional cookies):

  • Language preference - Remember your chosen explanation language
  • Display mode - Hosted vs BYOK mode preference
  • Theme settings - Dark mode or light mode (if applicable)

3. Cookies We Do NOT Use

We respect your privacy:

  • ❌ No tracking cookies (Google Analytics, Facebook Pixel, etc.)
  • ❌ No advertising cookies
  • ❌ No third-party marketing cookies
  • ❌ No cross-site tracking
  • ❌ No browser fingerprinting

4. How Long Cookies Last

Session cookies: Deleted when you close your browser

Authentication cookies: Last up to 30 days or until you log out

Preference data: Stored until you clear browser data or uninstall the extension

5. Managing Cookies

You can control cookies in several ways:

  • Log out: Removes authentication cookies
  • Browser settings: Clear cookies via Chrome Settings → Privacy and Security → Clear browsing data
  • Uninstall extension: Removes all local storage and cookies associated with LexifyAI

Note: Blocking or deleting essential cookies will prevent you from using the extension, as authentication is required for all features.

6. Updates to This Policy

We may update this Cookie Policy from time to time. Any changes will be posted on this page with an updated "Last updated" date.

7. Contact Us

If you have questions about our use of cookies, contact us at: jlptexamai@gmail.com

Explain Glossary with AI On Browser| LexifyAI