whyEXT Dark Mode by byrdltd

Per-site dark mode toggle: enable or disable a simple dark style for the current website domain, with settings saved locally in your browser.

Available on Firefox for Android™

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About this extension

whyEXT Dark Mode adds a lightweight per-domain “dark style” toggle for websites you choose. It works per domain (not per-tab): you decide which sites are affected, and everything stays local on your device.

What it does

Toggle a simple dark style for the current website’s domain from the extension popup.
Remember your choice locally (no accounts, no cloud sync).
Open the Options page to review, remove, or clear enabled domains.

How it works

Applies a page-level visual style intended to make many sites easier to read at night.
Results can vary by site: layout, embedded media, and a site’s own dark theme can affect appearance.

Privacy

No telemetry, no analytics, and no remote code execution.
Stores only the settings required for functionality (for example, your enabled domain list).

Permissions (why they exist)

Broad website access is requested so the extension can apply styling on normal web pages you visit, after you enable the toggle for that domain.
Tabs / scripting are used to keep styling consistent as you navigate, switch tabs, and reload pages.

Open source

Source code is available in the whyEXT monorepo on GitHub: https://github.com/byrdltd/whyEXT

Developer comments

Manual test checklist:
1) Open any https site.
2) Open the extension popup → enable for current domain.
3) Reload the page → styling should remain applied.
4) Open Options → domain should appear in the list; remove/clear should work.

Notes:
- Uses broad site permissions because styling is applied only after user enables the domain toggle.
- No remote code, no telemetry.

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whyEXT Dark Mode by byrdltd

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