https://github.com/ahatem/ioskeleymono
Iosevka configuration to mimic the look and feel of Berkeley Mono as closely as possible.
https://github.com/ahatem/ioskeleymono
coding-font font iosevka iosevka-custom iosevka-font monospace monospace-font programming-font typeface
Last synced: 7 days ago
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Iosevka configuration to mimic the look and feel of Berkeley Mono as closely as possible.
- Host: GitHub
- URL: https://github.com/ahatem/ioskeleymono
- Owner: ahatem
- License: ofl-1.1
- Created: 2025-09-05T20:45:03.000Z (7 months ago)
- Default Branch: main
- Last Pushed: 2025-09-16T01:40:33.000Z (7 months ago)
- Last Synced: 2025-09-16T03:30:17.733Z (7 months ago)
- Topics: coding-font, font, iosevka, iosevka-custom, iosevka-font, monospace, monospace-font, programming-font, typeface
- Homepage:
- Size: 554 KB
- Stars: 3
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Ioskeley Mono
A free, open-source alternative to [Berkeley Mono](https://berkeleygraphics.com/typefaces/berkeley-mono/) — built by configuring [Iosevka](https://github.com/be5invis/Iosevka) to match its look and feel as closely as possible.
The name is a mashup: **Iosevka** + **Berkeley** = **Ioskeley**.
---
## Preview
| Ioskeley Mono | Berkeley Mono |
| --- | --- |
|  |  |
> Theme: [Kintsugi Dark Flared](https://marketplace.visualstudio.com/items?itemName=ahmedhatem.kintsugi)
---
## Installation
Download the latest release from the [Releases page](https://github.com/ahatem/IoskeleyMono/releases).
### Which file should I download?
**Step 1 — Pick your use case:**
| I want to… | Download |
|---|---|
| Use it in my editor / IDE | A TTF zip |
| Use it in my terminal with icons | A Nerd Font zip |
| Use it on the web | `IoskeleyMono-Web.zip` |
**Step 2 — Pick your width:**
| Width | Best for |
|---|---|
| `Normal` | Default — works everywhere |
| `SemiCondensed` | More columns without sacrificing readability |
| `Condensed` | Maximum density |
> Not sure? Start with **Normal**.
### Installing the fonts
1. Download and unzip your chosen file
2. Select all `.ttf` files inside
3. Install on your system:
- **macOS** — double-click any font → Install Font, or drag all into Font Book
- **Windows** — select all → right-click → Install
- **Linux** — copy to `~/.local/share/fonts/` then run `fc-cache -fv`
---
## Weights
Ioskeley Mono matches Berkeley Mono's full weight axis across all widths:
| Weight | CSS value |
|---|---|
| Thin | 100 |
| ExtraLight | 200 |
| Light | 300 |
| SemiLight | 350 |
| Regular | 400 |
| Medium | 500 |
| SemiBold | 600 |
| Bold | 700 |
| ExtraBold | 800 |
| Black | 900 |
Every weight is available in both **Upright** and **Italic**.
---
## Design Choices
Ioskeley Mono uses specific character variants and custom metrics to closely match Berkeley Mono's aesthetic.
**Custom metrics** — vertical proportions, letter spacing, and parenthesis size are tuned to capture Berkeley's compact, geometric feel.
**Distinctive glyphs** — single-storey `g`, flat-arc parentheses `()`, two-circle `8`, dotted `0`, open-contour `6` and `9`, square punctuation dots, and a raised underscore.
For the full list of configuration choices, see [`private-build-plans.toml`](./private-build-plans.toml).
---
## Building from Source
The font is built automatically via GitHub Actions on every version tag push. To build locally:
```bash
git clone https://github.com/ahatem/IoskeleyMono.git
git clone --depth 1 https://github.com/be5invis/Iosevka.git
cp IoskeleyMono/private-build-plans.toml Iosevka/
cd Iosevka
npm install
npm run build -- contents::IoskeleyMono
```
Output will be in `Iosevka/dist/IoskeleyMono/`.
---
## Contributing
This project is just a build configuration on top of Iosevka — changes are often just a few lines in `private-build-plans.toml`. If you spot something off or have an idea, open an issue or send a PR. All contributions are welcome!
---
## License & Credits
Ioskeley Mono is a custom configuration of [Iosevka](https://github.com/be5invis/Iosevka). All credit for the original design and build system goes to [Belleve Invis](https://github.com/be5invis) and the Iosevka contributors.
Licensed under the [SIL Open Font License 1.1](./LICENSE).