Halfmoon is a highly customizable, drop-in Bootstrap replacement. It comes with three built-in core themes, with dark mode support for all themes and components.
See the code
Highly customizable, drop-in Bootstrap replacement.
Halfmoon is a highly customizable, drop-in Bootstrap replacement. It comes with three built-in core themes, with dark mode support for all themes and components. Build beautiful and responsive websites and applications.
To learn more, please read the documentation.
We implement no JavaScript on our own, therefore, there is no halfmoon.js (or anything similar). Instead we rely entirely on bootstrap.bundle.js, which you can download from Bootstrap's website. This means that you can replace bootstrap.css with halfmoon.css on your website, and everything should work exactly as expected.
This also means that you can use any of the Bootstrap component libraries for popular JS frameworks such as React, Vue, Angular, Svelte, etc.
Here's a starter template to help you quickly get started with Halfmoon.
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Starter template - Halfmoon</title>
<!-- Halfmoon CSS -->
<link href="path/to/halfmoon.min.css" rel="stylesheet">
</head>
<body>
<h1>Hello, world!</h1>
<!-- Bootstrap JS bundle with Popper -->
<script src="path/to/bootstrap.bundle.min.js"></script>
</body>
</html>
npm install halfmoon
Once the package has been installed, you can simply import the CSS file:
// Import Halfmoon CSS
import "halfmoon/css/halfmoon.min.css";
Halfmoon is licensed under MIT.
© Copyright 2023, Tahmid Khan
Overall
Maintained
Code review
npm
Latest release
Releases this year
1,479 followers · starred Jul 2020
727 followers · starred Feb 2024
556 followers · starred Nov 2025
173 followers · starred Aug 2021
Halfmoon is a highly customizable, drop-in Bootstrap replacement. It comes with three built-in core themes, with dark mode support for all themes and components.
See the code
Highly customizable, drop-in Bootstrap replacement.
Halfmoon is a highly customizable, drop-in Bootstrap replacement. It comes with three built-in core themes, with dark mode support for all themes and components. Build beautiful and responsive websites and applications.
To learn more, please read the documentation.
We implement no JavaScript on our own, therefore, there is no halfmoon.js (or anything similar). Instead we rely entirely on bootstrap.bundle.js, which you can download from Bootstrap's website. This means that you can replace bootstrap.css with halfmoon.css on your website, and everything should work exactly as expected.
This also means that you can use any of the Bootstrap component libraries for popular JS frameworks such as React, Vue, Angular, Svelte, etc.
Here's a starter template to help you quickly get started with Halfmoon.
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Starter template - Halfmoon</title>
<!-- Halfmoon CSS -->
<link href="path/to/halfmoon.min.css" rel="stylesheet">
</head>
<body>
<h1>Hello, world!</h1>
<!-- Bootstrap JS bundle with Popper -->
<script src="path/to/bootstrap.bundle.min.js"></script>
</body>
</html>
npm install halfmoon
Once the package has been installed, you can simply import the CSS file:
// Import Halfmoon CSS
import "halfmoon/css/halfmoon.min.css";
Halfmoon is licensed under MIT.
© Copyright 2023, Tahmid Khan
Overall
Maintained
Code review
npm
Latest release
Releases this year
1,479 followers · starred Jul 2020
727 followers · starred Feb 2024
556 followers · starred Nov 2025
173 followers · starred Aug 2021