Nyx -Privacy Policy

Last updated: 2025-09-28

Nyx is a Chrome extension that applies intelligent dark mode themes to AWS developer websites with advanced customization. We designed it to minimize data access and avoid collecting personal information.

— Summary —

• We do not collect, sell, or share personal data.

• We do not use analytics or tracking beacons.

• We do not execute remote code; all code ships with the extension.

• Only lightweight preferences are stored locally in Chrome and may sync via your Google account if Chrome Sync is enabled.

• The extension only modifies the look of specific AWS websites; no data is sent to the developer.
  
  

— Data We Store (locally in Chrome) —

Stored using chrome.storage (Sync or Local, depending on your Chrome settings):

• Theme preferences (light/dark mode options, site-specific styles)

• UI customization settings (color adjustments, toggles, layout choices)

• Last used mode (so it remembers your preference next time)

We do not store page content, credentials, secrets, billing data, or browsing history.
You can clear all extension data any time from the extension options or by removing/clearing extension data in Chrome.

— On-Page Processing (Content Script) —

The extension injects a stylesheet only on:

• https://code.amazon.com/*

• https://console.harmony.a2z.com/*

• https://pipelines.amazon.com/*
  
  

What it does on these pages:

• Reads minimal DOM structure to apply dark mode styles and customizations

• Does not exfiltrate page content; all processing happens locally in your browser

• Results are not transmitted to any developer server
  
  

— Permissions and Justifications —

• activeTab — Lets the extension apply dark mode to the tab you’re on when you interact with it.

• scripting — Injects CSS into supported pages to apply dark mode.

• storage — Saves your preferences (theme options, toggles).

• host_permissions (<all_urls>) — Required by Chrome to allow styling injection, though Nyx is designed to activate only on supported AWS domains listed above.

The extension does not request access to history, cookies, or network interception APIs.

— Network Requests and Destinations —

The extension itself does not send data to developer-controlled servers.
When you use it, your browser may naturally load resources from AWS/Amazon pages (normal navigation). No telemetry is sent to the developer.

— Remote Code Policy —

We do not execute remotely hosted JavaScript.
All executable code is packaged with the extension (Manifest V3). The extension’s content security policy restricts scripts to 'self'.

— Data Sharing, Sale, and Advertising —

• We do not sell data.

• We do not share data with third parties.

• We do not use data for advertising or profiling.
  
  

— Data Retention and Your Controls —

• Preferences remain in Chrome storage until you clear them or remove the extension.

• You can reset all data by removing the extension from Chrome or clearing extension data in settings.

— Security —

We intentionally limit the data we process and store. All actions occur locally in your browser, on AWS/Amazon pages under your account and authentication. While we follow Chrome security best practices, no internet software is perfectly secure — please keep Chrome up to date and review the permissions you grant.

— Changes to This Policy —

If we make material changes, we will update the “Last updated” date above and publish the updated policy at the same URL.