# Privacy Policy for AO3 Enhancer - Auto Tracker, Dark Mode & Reader Replacer
**Effective Date:** October 31, 2026
**Last Updated:** October 31, 2026
**Extension Name:** AO3 Enhancer - Auto Tracker, Dark Mode & Reader Replacer
**Extension ID:** hlnhppidljljneadggeghgllegflkoop
**Developer Contact:** contact@myexthub.com
**Website:** https://myexthub.com
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## 1. Introduction and Scope
This Privacy Policy describes how "AO3 Enhancer - Auto Tracker, Dark Mode & Reader Replacer" ("the Extension", "we", "our", or "us") collects, uses, stores, processes, and shares user data.
We are committed to maintaining the privacy and security of your personal information in strict accordance with the Google Chrome Web Store Developer Program Policies, the User Data FAQ, and applicable global data privacy regulations (including GDPR and CCPA).
The Extension is developed exclusively to enhance your browsing, reading, and accessibility experience on the Archive of Our Own (AO3) website (archiveofourown.org).
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## 2. Information We Collect
To provide its advertised single-purpose features, the Extension collects and processes the following specific categories of data:
### A. Reading Activity & Progress (AO3)
* **Work Metadata & Identifiers:** Work IDs, story titles, author tags, fandoms, word counts, and timestamps of works opened or completed on AO3.
* **Purpose:** Enables the "Auto Mark Read" feature, displays visual "Read" status badges on story listings, generates personal reading statistics (total works read, total words read), and provides reading recommendations based on your top tags.
### B. User Configuration & Preferences
* **Customization Settings:** Dark mode preference toggle, selected reading font family (e.g., Outfit, Inter, Georgia), font size, line height, and text alignment preferences.
* **Reader Replacements:** Custom text mapping pairs provided by the user (e.g., replacing "[Y/N]" or "(y/n)" with your preferred reader name or character traits).
* **Trigger Warnings & Filtering Lists:** Custom tag keywords entered by the user to automatically blur or hide stories containing specific content warnings.
### C. Account & Licensing Data (Personally Identifiable Information)
* **User Email Address:** When you sign in via our companion licensing platform (https://myexthub.com), the Extension collects your account email address (`userEmail`).
* **Subscription & Licensing Status:** Subscription status (`active` / `inactive`), trial usage counters (`viewInfoCount`), and installation timestamp (`firstInstallDate`).
* **Purpose:** To authenticate your license, manage the free trial counter (up to 6 uses), and unlock Pro/Premium features.
### D. Cookies and Web Storage Identifiers
* **Trial Tracking Cookie:** The Extension accesses and sets a cookie (`myexthub_trial_start`) strictly on the `https://myexthub.com` domain.
* **Purpose:** To prevent abuse of the free trial period upon reinstallation and maintain your trial eligibility state.
### E. Download Operations
* **Download Triggers:** When you click the download link for a fanfic on AO3, the Extension triggers a download via the Chrome Downloads API to format and clean the downloaded filename based on the story title. The Extension does not monitor, inspect, or store any unrelated browser downloads.
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## 3. How We Use Your Information & Limited Use Compliance
We use the collected information exclusively to deliver, support, and enhance the direct functionalities of the Extension.
### Compliance with the Chrome Web Store Limited Use Policy:
* **No Sale or Monetization:** We DO NOT sell, rent, lease, or monetize your personal data, reading activity, or settings to any third parties or data brokers under any circumstances.
* **No Advertising or Profiling:** We DO NOT use or transfer your data to serve targeted, behavioral, or personalized advertisements.
* **No Credit/Lending Evaluation:** We DO NOT use or transfer your data to assess creditworthiness or for financial/lending purposes.
* **Single Purpose Limitation:** All data collected is strictly required and utilized only to provide features directly beneficial to you within the scope of the Extension.
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## 4. Data Storage, Retention, and Security
### Storage Locations:
1. **Local Device Storage (`chrome.storage.local`):**
Your reading history, word counts, trigger warning filters, custom reader replacements, and display settings are stored locally on your device.
2. **Chrome Sync Storage (`chrome.storage.sync`):**
If you have Google Chrome Sync enabled on your browser, your extension preferences, trial count, and account email are synced securely across your authorized Chrome devices through your Google Account.
3. **Cookie Storage (`chrome.cookies`):**
The trial start timestamp is stored in a cookie under `https://myexthub.com`.
4. **Remote Licensing Server (`https://myexthub.com`):**
When checking license validity, the Extension transmits your email address via secure HTTPS to `https://myexthub.com/api/status?email=[email]`.
### Retention Periods:
* **Local Reading Data & Settings:** Retained indefinitely on your local device until you choose to clear it via the extension popup or until the Extension is uninstalled.
* **Licensing & Account Records:** Licensing and subscription records associated with your email are retained on `myexthub.com` for as long as your account remains active or as required for legal and tax compliance.
* **Trial Cookie:** The trial verification cookie on `myexthub.com` is set with an expiration of up to 1 year.
### Data Security:
* All network communications between the Extension and `myexthub.com` are conducted exclusively over secure, encrypted protocols (HTTPS/TLS).
* Access to licensing records is strictly limited and secured against unauthorized access, alteration, or disclosure.
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## 5. Data Sharing and Third-Party Disclosure
We only share information with third parties under the following limited circumstances:
1. **Licensing Infrastructure (MyExtHub):**
Your email address is transmitted to our backend infrastructure at `https://myexthub.com` solely to verify subscription status and license activation.
2. **Google Chrome Sync:**
If enabled by the user, extension settings and licensing states are synced via Google's secure cloud infrastructure under Google's Privacy Policy.
3. **Legal Requirements:**
We will only disclose information if required to do so by law, subpoena, or valid legal process issued by a competent governmental authority.
**We do NOT share data with any external analytics providers (such as Google Analytics), ad exchanges, or marketing partners.**
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## 6. Data Deletion and User Rights (GDPR & CCPA)
You have full control over your data and can manage or permanently delete it at any time:
* **Clear Local Reading History:**
You can instantly delete all recorded AO3 reading history, read badges, and accumulated reading statistics by clicking the **"Clear History & Stats"** button in the Extension popup (Stats tab).
* **Sign Out & Clear Session:**
You can click the **"Sign Out"** button in the Extension popup to immediately wipe your cached email address, subscription status, and sync session from the Extension.
* **Complete Local Data Purge:**
Uninstalling or removing the Extension from Google Chrome (`chrome://extensions`) immediately and permanently deletes all local files, preferences, and data stored in `chrome.storage.local` and `chrome.storage.sync`.
* **Request Server Data Deletion:**
If you wish to request the permanent deletion of your email address, subscription records, or licensing data stored on `myexthub.com`, please send an email to **contact@myexthub.com** with the subject line *"Data Deletion Request"*. We will process and confirm the deletion within 30 days, free of charge.
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## 7. Justification of Chrome Extension Permissions
In accordance with the Chrome Web Store policy of minimal permissions:
* **`storage`:** Required to save your reading history, custom fonts, dark mode preferences, text replacers, and trigger warning filters locally on your device.
* **`cookies`:** Required to set and read the `myexthub_trial_start` cookie on `myexthub.com` to prevent trial abuse upon reinstallation.
* **`downloads`:** Required solely to cleanly rename and trigger the download of AO3 fanfics when the user clicks the native AO3 download button.
* **Host Permission `*://archiveofourown.org/*`:** Required to inject styling, detect read chapters, apply dark mode, and replace reader text on AO3 pages.
* **Host Permission `https://myexthub.com/*`:** Required to verify subscription licenses and authenticate your user account via the official dashboard.
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## 8. Children's Privacy
The Extension is not directed to individuals under the age of 13. We do not knowingly collect or solicit personal information from children under 13. If we discover that a child under 13 has provided us with personal information, we will promptly delete it.
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## 9. Changes to this Privacy Policy
We may periodically update this Privacy Policy to reflect changes in our features, operational practices, or regulatory requirements. Any updates will be published at this URL, and the "Last Updated" date at the top of the policy will be revised accordingly. We encourage you to review this page periodically.
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## 10. Contact Us
If you have any questions, feedback, concerns, or requests regarding this Privacy Policy or your personal data, please contact us at:
* **Email:** contact@myexthub.com
* **Platform:** https://myexthub.com
* **Product:** AO3 Enhancer - Auto Tracker, Dark Mode & Reader Replacer
* **Extension ID:** hlnhppidljljneadggeghgllegflkoop