ᓚᘏᗢ Bengal

The documentation generator built on Python's free-threading future

Every layer — markdown parsing, syntax highlighting, templates, dev server — is pure Python, scales with your cores, and ships zero npm dependencies.

pip install bengal
bengal new site --name mysite && cd mysite && bengal serve

Why Bengal?

Bengal is a static site generator where the entire stack is Python you can read, debug, and extend. No JavaScript toolchains. No compiled C extensions in the critical path. Every library in the pipeline — Patitas (markdown), Rosettes (syntax highlighting), Kida (templates), Pounce (dev server) — is purpose-built for Python 3.14+ free-threading.

What this gets you:

• Scales with cores — Parallel builds with true thread parallelism on Python 3.14t. No GIL contention.
• AI-native output — Generates llms.txt, agent manifests, per-page JSON, and Content Signals so AI agents can discover, navigate, and respect your content policies.
• Sub-second rebuilds — Provenance-based incremental builds with content-addressed hashing. Only changed pages rebuild.
• Python-native workflows — Jupyter .ipynb rendering, autodoc for Python/CLI/OpenAPI, pip install and go.
• Batteries included — Sitemap, RSS, social cards, search indexes, broken link detection, content validation.
• Extensible — Pluggable engines for templates, Markdown, and syntax highlighting. 6 wired plugin extension points (directives, roles, template functions/filters/tests, build phase hooks); content sources, health validators, and shortcodes are registered and planned.

Use Bengal For

• Documentation sites — Versioned docs, API reference, search, and internal linking
• Blogs and journals — Tags, categories, feeds, related content, and social sharing
• Knowledge bases — Markdown-first publishing with validation and JSON search indexes
• Product and marketing sites — Landing pages, content collections, and social cards

Quick Commands

| Command | Description | |---------|-------------| | bengal build | Production build | | bengal serve | Dev server with live reload | | bengal preview | Build, then serve completed output locally | | bengal check | Health checks and validation | | bengal fix | Auto-fix common issues | | bengal inspect graph | Site structure analysis |

Aliases: b (build), s (serve), v (check)

Site Scaffolding

bengal new site

🎯 What kind of site are you building?
  📝 Blog            - Personal or professional blog
  📚 Documentation   - Technical docs or guides
  💼 Portfolio       - Showcase your work
  🛒 Product         - Product site with listings and features
  📄 Resume          - Professional resume/CV site
  📦 Blank           - Empty site, no initial structure
  ⚙️  Custom         - Define your own structure

bengal new site --name my-docs --template docs
bengal new site --name my-blog --template blog
bengal new site --name portfolio --template portfolio

# Add a page under a section
bengal new page --name getting-started --section docs
Add template files
bengal new layout --name docs-page
bengal new partial --name docs-sidebar
Add a content type strategy scaffold
bengal new content-type --name tutorial

bengal new content-type --name changelog

Features

| Feature | Description | Docs | |---------|-------------|------| | SEO & Discovery | Sitemap, RSS, canonical URLs, Open Graph, social cards, search, JSON/LLM output, llms.txt, Content Signals | SEO & Discovery → | | Directives | Tabs, admonitions, cards, dropdowns, code blocks | Content → | | Notebooks | Native Jupyter .ipynb rendering, Binder/Colab links | Notebooks → | | Autodoc | API docs from Python, CLI, OpenAPI with symbol cross-linking, @overload grouping, and inherited-member badges | Autodoc → | | Remote Sources | Pull content from GitHub, Notion, REST APIs | Sources → | | Image Processing | Resize, crop, format conversion (WebP/AVIF), srcset generation | Images → | | Content Collections | Type-safe frontmatter with dataclass/Pydantic schemas | Collections → | | Theming | Dark mode, responsive, syntax highlighting, search | Theming → | | Validation | Health checks, broken link detection, auto-fix | Validation → | | Performance | Parallel builds, incremental rebuilds, streaming | Large Sites → | | Zero-Config Deploy | Auto-detects GitHub Pages, Netlify, Vercel | Deployment → |

📚 Full documentation: lbliii.github.io/bengal

Configuration

# bengal.toml
[site]
title = "My Site"
baseurl = "https://example.com"

config/
├── _default/           # Base configuration
│   ├── site.yaml
│   └── build.yaml
├── environments/       # Environment overrides
│   └── production.yaml
└── profiles/           # Build profiles
    └── dev.yaml

bengal build --environment production    # Production environment
bengal build --profile dev    # Development profile

📖 Configuration guide: Configuration →

Project Structure

mysite/
├── content/          # Markdown pages
├── templates/        # Custom templates (optional)
├── assets/           # Static files (CSS, JS, images)
├── data/             # YAML/JSON data files
├── config/           # Configuration directory
└── public/           # Build output

Theming

Bengal ships with a modern, accessible default theme:

• Dark mode with system preference detection
• Responsive design with mobile navigation
• Syntax highlighting with copy buttons
• Table of contents with scroll spy
• Full-text search (Lunr.js)

{# templates/page.html #}
{% extends "base.html" %}
{% block content %} <article class="prose">   <h1>{{ page.title }}</h1>   {{ content | safe }} </article> {% endblock %}

Pluggable Engines

Bengal follows a "bring your own" pattern — swap engines without changing your content.

# config/_default/content.yaml
markdown:
  parser: patitas  # default, or python-markdown (requires: pip install markdown)

# config/_default/theme.yaml
highlighting:
  backend: rosettes

Requirements

• Python 3.14+ (uses free-threading and PEP 784 compression)
• Linux, macOS, Windows

Philosophy

Bengal prioritizes correctness and clarity over backwards compatibility.

Each release represents the best solution we know how to deliver. When existing behavior no longer reflects the best design, it changes. Upgrades may require reading release notes and making adjustments.

• Fail loudly — Breaking changes produce clear errors
• User control — You choose when to upgrade; we choose what changes
• Minimal compatibility layers — Where a shim, config-key migration, or command alias exists, it emits a clear DeprecationWarning with a documented removal horizon — never silent behavior

Documentation

📚 lbliii.github.io/bengal

Development

git clone https://github.com/lbliii/bengal.git
cd bengal
uv sync --group dev
pytest

Bengal is a standalone uv project. Run uv sync and uv run ... from this checkout; sibling repositories are not required for normal development.

The Bengal Ecosystem

A structured reactive stack — every layer written in pure Python for 3.14t free-threading.

| | | | | |--:|---|---|---| | ᓚᘏᗢ | Bengal | Static site generator ← You are here | Docs | | ∿∿ | Purr | Content runtime | — | | ⌁⌁ | Chirp | Web framework | Docs | | =^..^= | Pounce | ASGI server | Docs | | )彡 | Kida | Template engine | Docs | | ฅᨐฅ | Patitas | Markdown parser | Docs | | ⌾⌾⌾ | Rosettes | Syntax highlighter | Docs |

Python-native. Free-threading ready. No npm required.

License

MIT