This script will export all chapters and pages within a given book to a folder of basic HTML and image files which could act as a static site.
Once ran, you should be able to open index.html within the output folder to start browsing.
This is a very simplistic single-script-file example of using the book, chapter and pages API together, the output lacks a lot of detail including styling and inter-content link transforming.
You will need php (~7.2+) installed on the machine you want to run this script on. You will also need BookStack API credentials (TOKEN_ID & TOKEN_SECRET) at the ready.
# Downloading the script
curl https://raw.githubusercontent.com/BookStackApp/api-scripts/main/php-book-to-static-site/book-to-static.php > book-to-static.php
# Setup
# ALTERNATIVELY: Open the script and edit the variables at the top.
export BS_URL=https://bookstack.example.com # Set to be your BookStack base URL
export BS_TOKEN_ID=abc123 # Set to be your API token_id
export BS_TOKEN_SECRET=123abc # Set to be your API token_secret
# Running the script
php book-to-static.php <book_url_slug> <output_dir># Export a book with URL slug of my_book to an "out" directory
php book-to-static.php my_book ./out