Toggle theme with Alt+T
Adds an Alt+T keyboard shortcut that instantly switches GitHub between light and dark mode.
Code to copy
// Press Alt+T to toggle GitHub's light/dark color mode
document.addEventListener('keydown', function (e) {
if (e.altKey && (e.key === 't' || e.key === 'T')) {
var html = document.documentElement;
var next = html.getAttribute('data-color-mode') === 'dark' ? 'light' : 'dark';
html.setAttribute('data-color-mode', next);
JZ.toast('Color mode: ' + next);
}
});How to use this example
- Copy the code with the button above.
- Install JustZix (2 minutes) and open the extension on the target page.
- Add a new rule matching that page.
- Paste the code into the rule's JavaScript panel and save — it runs on every page visit.
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