6 preset themes
Dark, Light, OLED Eco with pure black, High Contrast, Sepia Reading and Dracula. One click to switch.
Your browser, your way
Customizable dark themes, full accessibility and absolute control over every website. Everything runs on your device without sending a single byte online.
- 6+preset themes
- 0data collected
- ∞sites customizable
Everything you need
Designed to be fast, private and easy to use.
Native site theme
If the page already ships its own dark mode, the extension detects it and lets you enable it with one click.
Real accessibility
Dyslexia mode, color blindness filters (protanopia, deuteranopia, tritanopia) and high contrast built in.
Full editor
Side panel to customize colors, fonts, size, line height and spacing on any page.
Per-domain rules
Force light or dark per site, create custom themes or exclude pages. Subdomains covered automatically.
High compatibility
Automatically fixes white backgrounds that resist theming, including inside iframes and dynamic content.
Auto mode
Switches between light and dark based on local time. Example: dark from 6 PM to 6 AM.
Keyboard shortcuts
Ctrl+Shift+D to toggle, Ctrl+Shift+← → to cycle themes instantly.
🔒 Absolute privacy
All settings are stored inside your browser (chrome.storage.local). The extension performs no network requests and collects no data: zero telemetry, zero trackers, zero exceptions.
🚫 No servers
Nothing ever leaves your machine.
📖 Auditable code
Pure JavaScript, no obfuscation.
📦 No dependencies
No npm, no build, no frameworks.
🚀 Installed in seconds
Open
chrome://extensions/Enable Developer mode
Click “Load unpacked”
Select the project folder and you’re done!
Coming soon to the Chrome Web Store. In the meantime you can load the extension in developer mode.
☕ Enjoying DarkHelper?
If you find it useful, consider making a small donation to support ongoing development and maintenance. Every contribution helps!
Donate via PayPal100% voluntary. The extension will always be free.