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burgher

Burgher - a static site generator focused on galleries

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PyPI
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Burgher - a static site generator focused on galleries

Burgher is a static site generator that makes it easy to create photo galleries from your existing folder structure. Instead of requiring you to reorganize your photos or maintain a separate structure, burgher works with how you already organize your photos.

Key features:

  • Uses your existing photo folder organization
  • Automatically generates thumbnails in multiple sizes
  • Extracts and displays EXIF data
  • Supports both single photos and gallery collections
  • Simple template-based customization

Let's look at example structure of the gallery files:


.
├── Baltics
│   ├── Helsinki
│   │   ├── X-T5-2023-05-29 09.31.13.jpg
│   │   ├── X-T5-2023-05-30 19.24.16.jpg
│   │   ├── _Ruoholahti
│   │   │   ├── X-T5-2023-05-30 11.12.54.jpg
│   │   ├── _Suomenlinna
│   │   │   ├── X-T5-2023-05-29 11.05.40.jpg
│   │   │   └── X-T5-2023-05-29 11.54.06.jpg
│   │   └── info.md
│   ├── Lithuania
│   │   ├── _Countryside
│   │   │   ├── X-T5-2023-05-24 09.11.12.jpg
│   │   │   └── X-T5-2023-05-24 14.49.27.jpg
│   │   ├── _Druskininkai
│   │   │   └── X-T5-2023-05-22 08.43.41.jpg
│   │   ├── _Spit
│   │   │   ├── main.jpg
│   │   │   └── info.md
│   │   └── _Vilnius
│   │       └── main.jpg
│   └── Riga
└ ... 

Features:

  • main.jpg is used as a cover image for the album
  • info.md is used to provide description about the album
  • _ prefixed folders are treated as embedded albums - they get rendered as part of the main album but they can have their own info.md and cover image and they also get link on their own.
  • Albums with .hidden empty file will not be indexed in the main page and will only be accessible with the main link

How it works

  • Point burgher at your photo directories
  • Define your desired thumbnail sizes and template structure
  • Burgher automatically:
    • Creates optimized thumbnails
    • Extracts photo metadata
    • Generates gallery pages
    • Maintains your folder hierarchy

Basic Usage

Install

    pip install burgher

Create app.py:

from pathlib import Path

from burgher.feed import Feed

from burgher import FrontMatterNode, StaticFolderNode, Gallery
from burgher import App

# this is the list of directories that will trigger rebuild of all template nodes
# if any file changes. 
check_paths = [
    Path("templates/"),
    Path("static/"),
]

out = Path("../build/")
PHOTO_DIR = Path("/home/user/photos/public/")
app = App(
    name="appname",
    template_dir="/templates",
    output_path=out,
    domain="http://example.com",
    check_paths=check_paths,
    # context db is json file that persists between builds
    # it is used to cache metadata for photos and other content to improve build performance
    context_db_path=Path("../example.json"),
)

app.register(
    # register directory with markdown files that will be rendered into html
    pages=FrontMatterNode.from_folder(
        "pages",
        template_name="page.html"
    ),
    # static files - these will be simply copied
    static=StaticFolderNode("static"),
    # register gallery, here we specify output file, so that the gallery is a root of the site
    gallery=Gallery(PHOTO_DIR,
                    output_file="index.html",
                    source_file="index.md"
                    ),
    rss=Feed(root_gallery=PHOTO_DIR),
)

# generate the site
app.generate()

and generate website via

    python app.py

Available Node Types

Basic Nodes

  • Node - Base node class that others inherit from
  • StaticNode - Copies a single file without modification
  • StaticFolderNode - Copies an entire folder structure without modification

Content Nodes

  • BlogRoot - Creates blog structure with listing index and page notes
  • TemplateNode - Renders a Jinja2 template with context
  • MarkdownNode - Renders markdown content into HTML
  • FrontMatterNode - Markdown with YAML frontmatter for metadata
  • Gallery - Root node for the gallery
  • Album - Folder with pictures or other albums
  • Picture - Handles image files with EXIF data and metadata
  • Thumb - Creates thumbnail versions of images

Special Purpose Nodes

  • Feed - Generates RSS/Atom feeds
  • Stats - Generates statistics pages

Each node type can be configured with various options and composed together to build complex static sites. Nodes can have parent-child relationships and share context data.

Node System and File Structure

The node system creates a graph that mirrors your site's file organization:

Node Tree to File Tree Mapping

  • Each Node corresponds to a file or directory in your site
  • Parent nodes represent directories containing other files/folders
  • Child nodes represent the contained files and subdirectories
  • The node graph directly maps to the output file structure

Context Database

The context database is used to cache metadata for photos and other content to improve build performance:

  • Photo EXIF data is expensive to parse and extract from image files
  • The context DB caches extracted metadata like:
    • Camera settings (aperture, shutter speed, ISO)
    • Camera/lens model information
    • Dates and timestamps
    • Image dimensions
    • Other EXIF tags of interest

When building the site:

  • For each node, a hash based on file stats (size, modification time) is generated
  • If the hash exists in the context DB, cached metadata is used
  • If not found or the file changed, metadata is re-parsed and cached (e.g. EXIF data for photos)
  • For template nodes, content is regenerated if source files, templates, or Python code changes
  • This avoids re-processing unchanged files on subsequent builds

The context caching provides significant performance benefits:

  • Only new/modified photos need full EXIF processing
  • Cached metadata is instantly available for unchanged files
  • Reduces build times dramatically for large photo galleries
  • Preserves extracted metadata between builds

The context DB is stored as a JSON file that persists between builds. This allows incremental builds to be much faster than regenerating all metadata each time.

Blog Root

For blogs there is a blog root node:

from pathlib import Path

from burgher import App, BlogRoot, StaticFolderNode

blog_folder = Path('blog_entries')
check_paths = [
    Path("./templates/"),
    Path("./static/"),
]

blog = App(...)  # as before 
blog.register(
    index=BlogRoot(source_file=blog_folder / "index.md", post_folder=blog_folder / "posts"),
)

blog.generate()

This is the structure expected for the blog:


.
├── index.md
└── posts
    ├── entry1.assets
    │   └── 2021-03-08 12.27.28.jpg
    ├── entry1.md
    └── xps-setup.md

The index has special markdown attributes:

---
title:  "Blog title"
title_post: "Blog"
go_back_title: "blog"
---

# Blog

Some info about the blog

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