Zephirum is designed for good readability and legibility. It is ideal for code, terminal, and other monospace applications, including machine reading.

The Arabic word Ṣifr (صفر), meaning "empty" or "nothing," was introduced to Europe through Islamic mathematics. Fibonacci later Latinized it as "Zephirum", which evolved into the modern word "zero."

The font follows the Google Fonts specification and includes:

• DESCRIPTION.en_us.html - Font description and details
• FONTLOG.txt - Detailed font history and acknowledgments
• zephirum(*).css - CSS files for web usage
• Zephirum-Regular.glyphs - Glyphs file
• Zephirum-Regular.ttf - TrueType font file
• METADATA.pb - Font metadata for Google Fonts
• OFL.txt - SIL Open Font License v1.1

The font source is in TTF format and can be opened and modified using:

• Glyphs
• FontForge
• FontLab
• Any other font editor that supports TTF format

To modify the font:

1. Install a font editor
2. Open the Zephirum-Regular.glyphs file
3. Make your changes and export the font files

Please note that some glyphs are composed of multiple glyphs. However, in TTF format they are exported as decomposed glyphs. Avoid editing the TTF file to maintain consistency. TTF is only for exporting glyphs.

Define the font family in your CSS file

@import url("https://cdn.jsdelivr.net/gh/rastislavcore/zephirum/zephirum.css");

or in your HTML file

<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/rastislavcore/zephirum/zephirum.css">

Usage Example

code, pre, .monospace {
  font-family: "zephirum", monospace;
}

/* Using special PUA characters */
.open-source-icon::before {
  font-family: "zephirum";
  content: "\E0A9";
}

.bitcoin::before {
  font-family: "zephirum";
  content: "\F1B6";
}

@font-face {
  font-family: "zephirum";
  src: url(Zephirum-Regular.ttf) format("truetype");
  font-display: swap;
}

CSS import of the latest version

@font-face {
  font-family: "zephirum";
  src: url(https://cdn.jsdelivr.net/gh/rastislavcore/zephirum/Zephirum-Regular.ttf) format("truetype");
  font-display: swap;
}

CSS with Minor updates and patch fixes within a major version

@font-face {
  font-family: "zephirum";
  src: url(https://cdn.jsdelivr.net/gh/rastislavcore/zephirum@1/Zephirum-Regular.ttf) format("truetype");
  font-display: swap;
}

Contributions are welcome! Please open an issue or submit a pull request for any improvements or bug fixes.

This Font Software is licensed under the SIL Open Font License, Version 1.1. See the OFL.txt file for full details.

If you find this project useful, please consider supporting it:

• GitHub Sponsors

List of sponsors: