A document-building tool that converts Markdown chapters into a print-ready PDF book, including layout, navigation, code formatting, and images.

Building a book with a cover, table of contents, page numbers, headers and footers, highlighted code blocks, embedded images, and English or Korean typography.

It removes the manual work of typesetting chapters and assembling a polished PDF.

How lowtidebuild/ebook-writer configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to lowtidebuild/ebook-writer. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/lowtidebuild/ebook-writer/main/.claude/skills/pdf-builder/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/lowtidebuild/ebook-writer

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/lowtidebuild/ebook-writer/pdf-builder.svg)](https://agentmods.dev/skills/lowtidebuild/ebook-writer/pdf-builder)

Your own site

<a href="https://agentmods.dev/skills/lowtidebuild/ebook-writer/pdf-builder"><img src="https://agentmods.dev/badge/skills/lowtidebuild/ebook-writer/pdf-builder.svg" alt="Measured on agentmods" height="20"></a>

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 810 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00810
Opus 5	$0.00000	$0.00405
Sonnet 5	$0.00000	$0.00162
Haiku 4.5	$0.00000	$0.00081

Measured 6d ago against content hash 9caff30b65c2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

pdf-builder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/build_pdf.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/pdf-builder/SKILL.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PDF Builder Skill

Purpose

Convert markdown chapters into a professionally typeset PDF book using WeasyPrint. This skill takes the authored chapter files (Markdown) and produces a print-ready PDF complete with cover page, table of contents, page numbers, headers/footers, syntax-highlighted code blocks, and properly placed images.

Script

scripts/build_pdf.py

Features

Cover page -- Rendered from an HTML template with title, subtitle, author, and date placeholders.
Table of contents -- Auto-generated from chapter headings (H1 and H2) with page references.
Page numbers -- Centered in the footer on every page except the cover.
Headers and footers -- Configurable via CSS @page rules; suppressed on the cover page.
Code highlighting -- Fenced code blocks are syntax-highlighted using Pygments (friendly theme).
Image placement -- Images are resolved to absolute paths so WeasyPrint can locate them, centered with constrained width.
Multilingual support -- --language flag switches between Korean (ko) and English (en) typographic defaults.

Dependencies

Package	Purpose
`weasyprint`	HTML/CSS to PDF rendering engine
`markdown`	Markdown to HTML conversion
`pymdown-extensions`	Extended Markdown syntax (superfences)
`Pygments`	Syntax highlighting for code blocks

Install all at once:

.venv/bin/pip install weasyprint markdown pymdown-extensions Pygments

Reference Files

File	Description
`references/book_styles.css`	Professional book layout CSS
`references/cover_template.html`	HTML template for the cover page

Usage

.venv/bin/python3 .claude/skills/pdf-builder/scripts/build_pdf.py \
  --chapters output/chapters/ko/ \
  --images output/images/ \
  --output output/final/book_ko.pdf \
  --language ko \
  --styles .claude/skills/pdf-builder/references/book_styles.css \
  --cover .claude/skills/pdf-builder/references/cover_template.html \
  --title "Book Title" \
  --author "Author Name" \
  --citations output/research/citations.json

Read the full file on GitHub · 77 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

6d ago First seen · 77 lines · 0 tokens per session scan A 9caff30b65c2

Subscribe to this mod's changes

pdf-builder is a skill published in the GitHub repository lowtidebuild/ebook-writer (5 stars, last pushed 2mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 810 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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ebook-writer: Skill for Claude Code