leandrocp/lumis

---

leandrocp/lumis.json

{
  "createdAt": "2025-02-14T19:40:42Z",
  "defaultBranch": "main",
  "description": "Syntax Highlighter powered by Tree-sitter and Neovim themes.",
  "fullName": "leandrocp/lumis",
  "homepage": "https://lumis.sh",
  "language": "C",
  "name": "lumis",
  "pushedAt": "2026-03-19T03:34:52Z",
  "stargazersCount": 77,
  "topics": [
    "cli",
    "elixir",
    "java",
    "rust",
    "syntax-highlighter",
    "syntax-highlighting",
    "tree-sitter",
    "tree-sitter-highlight"
  ],
  "updatedAt": "2026-03-17T05:07:36Z",
  "url": "https://github.com/leandrocp/lumis"
}

Lumis

Syntax Highlighter powered by Tree-sitter and Neovim themes

70+ languages. 120+ themes. 4 platforms. One API.

lumis.sh

---

Features

• 70+ Tree-sitter languages - Fast and accurate syntax parsing
• 120+ Neovim themes - Updated and curated themes from the Neovim community
• 4 platforms - CLI, Rust, Elixir, Java
• Multiple outputs - HTML (inline/linked), Terminal (ANSI), multi-theme (light/dark), and custom formatters
• Language auto-detection - File extension and shebang support
• Streaming-friendly - Handles incomplete code gracefully
• Zero config - Works out of the box

Quick Start

CLI

cargo install lumis

lumis highlight src/index.js --theme dracula

Rust

use lumis::{highlight, HtmlInlineBuilder, languages::Language, themes};

let code = "print('Hello')";

let theme = themes::get("dracula").unwrap();

let formatter = HtmlInlineBuilder::new()
    .lang(Language::Python)
    .theme(Some(theme))
    .build()
    .unwrap();

let html = highlight(code, formatter);

Elixir

Lumis.highlight!("setTimeout(fun, 5000)", language: "js", formatter: {:html_inline, theme: "dracula"})

Java

Project by @andreaTP. More details at https://chicory.dev/blog/syntax-highlight

import io.roastedroot.lumis4j.core.Lumis;
import io.roastedroot.lumis4j.core.Lang;
import io.roastedroot.lumis4j.core.Theme;

var lumis = Lumis.builder()
    .withLang(Lang.JAVASCRIPT)
    .withTheme(Theme.DRACULA)
    .build();

var result = lumis.highlight("console.log('Hello, World!');");
System.out.println(result.string());

Documentation

Platform	Install	Package	Docs
CLI	cargo install lumis	-	lumis --help
Rust	cargo add lumis	crates.io/lumis	[README.md]!(crates/lumis/README.md) • docs.rs
Elixir	{:lumis, "~> 0.1"}	hex.pm/lumis	[README.md]!(packages/elixir/lumis/README.md) • hexdocs
Java	io.roastedroot:lumis4j:latest	-	-

Contributing

Contributions welcome! Feel free to open issues or PRs for bugs, features, new themes, or language support.

Acknowledgements

• Makeup for setting up the baseline for the Elixir package
• Inkjet for the Rust implementation in the initial versions
• Shiki and syntect for providing awesome syntax highlighting

License

MIT