Legal & Transparency

Privacy Policy

Last updated: July 27, 2026

info 1. Overview

Subslator is a Chrome extension designed to help users understand and translate subtitles directly while watching videos. This Privacy Policy explains what data we collect, how we use it, and how we protect your information.

We are committed to ensuring that your privacy is protected. Subslator is built with a privacy-first approach and collects only the minimum data necessary to provide its core functionality.

visibility_off 2. Information We Collect

2.1 Personal Data Collection

For users who choose to create an account, we collect the following information via Google Authentication to provide synchronization and dashboard features:

  • Email address
  • Basic profile information (Name, Profile Picture)
  • Bookmarked vocabulary words and viewing context (e.g., Movie/Video Title)
👉 If you use the extension without logging in, we do not collect any personal or identifiable information.

2.2 Text Processing (User-Selected Content)

When you use Subslator:

  • The extension processes text that you select (e.g., subtitle words or phrases)
  • This text may be sent to a translation API to provide:
    • Translation
    • Word meaning
    • Pronunciation
    • Definitions
👉 This processing is done only when you actively select text.

2.3 Automatically Collected Data

Subslator does not automatically collect:

  • Browsing history
  • Keystrokes
  • Page content (except selected text)
  • Cookies or tracking data

memory 3. How We Use Information

We use the selected text solely to:

  • Detect the source language
  • Translate content into the user’s selected language
  • Provide word meanings, pronunciation, and definitions
  • Improve the accuracy and performance of translations

api 4. Third-Party Services

Subslator may use third-party APIs for:

  • Language detection
  • Translation
  • Dictionary data

These services may temporarily process the selected text to return results. We do not control how these services handle data, so we recommend reviewing their respective privacy policies.

However:

  • We do not store or log any text sent to these services
  • Data is used only for real-time response

storage 5. Data Storage

Subslator uses a combination of local and cloud storage depending on your usage:

For Anonymous Users:

  • Your preferred target language
  • Subtitle size and position preferences
  • Theme preferences (dark/light mode)

This data is stored locally on your device using Chrome's built-in storage API and never leaves your browser.

For Authenticated Users (Pro/Dashboard):

  • Saved vocabulary words and their context
  • Mastered words list
  • Authentication tokens

This data is securely transmitted and stored in our cloud database hosted by Supabase to allow cross-device synchronization and access to the web dashboard. Supabase adheres to strict industry-standard security and privacy compliance.

share_off 6. Data Sharing

We do not sell, trade, or share your data with third parties.

Your data is only shared when necessary to:

  • Process translations via third-party APIs (as described above)

shield 7. Security

We take reasonable measures to protect your data:

  • No sensitive data is stored
  • Communication with APIs is done over secure connections (HTTPS)

tune 8. Your Control

You are always in control:

  • Subslator only works when you select text
  • You can disable or uninstall the extension at any time
  • You can clear stored preferences from your browser settings

child_care 9. Children's Privacy

Subslator is not intended for children under the age of 13. We do not knowingly collect any data from children.

update 10. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be reflected on this page with an updated date.

mail 11. Contact

If you have any questions about this Privacy Policy, you can contact:

Developer / Publisher: Mehedi H Sajib
Email: sajibmehedi7@gmail.com

12. Summary (Simple Version)

privacy_tip

Privacy First

We collect minimum necessary data

api

Secure Processing

Text sent to APIs is never logged

cloud_done

Local & Cloud Storage

Data remains local for anonymous users, cloud sync for accounts