Introduction

CEFR Reader (“we”, “our”, or “us”) is committed to protecting your privacy. This Privacy Policy explains how our Chrome extension handles information and applies to all users of the CEFR Reader extension.

By using CEFR Reader, you agree to the practices described in this Privacy Policy.

Information We Do NOT Collect

CEFR Reader does not collect any personal information.

Specifically, we do NOT:

• Collect, store, or transmit any personal data
• Track your browsing history or website visits
• Use cookies, analytics, or tracking technologies
• Share any information with third parties
• Collect IP addresses or device information
• Store analyzed webpage content

How the Extension Works

Local Processing

CEFR Reader performs all text analysis entirely on your local device:

1. Text Analysis: When you activate the extension on a webpage, it analyzes the visible text content using local JavaScript code
2. Vocabulary Matching: Words are matched against our local CEFR database (18,000+ words) stored within the extension
3. Readability Calculation: Scores are calculated using local algorithms (Flesch-Kincaid, Lexile approximations)
4. Display: Results are displayed immediately in your browser

No data leaves your browser during this process.

User-Initiated Dictionary Lookups

When you click on a highlighted word to view its definition:

• Only the specific word you click is sent to the Free Dictionary API (dictionaryapi.dev)
• This is a user-initiated action only
• No context or surrounding text is transmitted
• This service is used solely for word definitions