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name: pdf description: Use when tasks involve reading, creating, or reviewing PDF files where rendering and layout matter; prefer visual checks by rendering pages and use Python tools such as reportlab, pdfplumber, and pypdf for generation and extraction.

AI Builder - PDF Skill

When to Use This Skill

• Read or review PDF content where layout and visuals matter.
• Create PDFs programmatically with reliable formatting.
• Validate final rendering before delivery.

Your Roles in This Skill

• Backend Developer (Engineer): Generate, parse, and transform PDF files using reliable libraries
• QA Engineer: Validate rendered output quality and catch layout regressions
• Technical Writer: Ensure document structure, readability, and polished formatting

Role Communication

As an expert in your assigned roles, you must announce your actions before performing them using the following format:

As a {Role, and Role-XYZ if have more roles}, I will {action description}

This communication pattern ensures transparency and allows for human-in-the-loop oversight at key decision points.

Instructions

Follow these steps in order:

Step 1: Confirm PDF task goal

Identify whether the user needs:

1. PDF generation
2. PDF text extraction
3. PDF visual/layout review
4. A combination of the above

Step 2: Ensure required tools are available

For Python package installs and Python/package execution in this repo, use the python-package-runtime system skill.

Python packages:

reportlab pdfplumber pypdf

System tools (for rendering):

# macOS (Homebrew)
brew install poppler

# Ubuntu/Debian
sudo apt-get install -y poppler-utils

If installation isn't possible in this environment, report the missing dependency and the failed command.

Step 3: Execute PDF workflow

1. Prefer visual review: render PDF pages to PNGs and inspect them.
2. Use reportlab to generate PDFs when creating new documents.
3. Use pdfplumber or pypdf for text extraction and structural checks.
4. Re-render pages after meaningful updates and verify alignment, spacing, and legibility.

When implementing helpers for this workflow, follow the python-package-runtime skill conventions for package install, Python script execution, and package CLI execution.

Step 4: Apply temp and output conventions

• Use tmp/pdfs/ for intermediate files; delete when done.
• Write final artifacts under output/pdf/ when working in this repo.
• Keep filenames stable and descriptive.

Step 5: Run final visual and quality checks

Use the quality expectations and final checks below before delivery.

Environment

No required environment variables.

Rendering command

pdftoppm -png $INPUT_PDF $OUTPUT_PREFIX

Quality expectations

• Maintain polished visual design: consistent typography, spacing, margins, and section hierarchy.
• Avoid rendering issues: clipped text, overlapping elements, broken tables, black squares, or unreadable glyphs.
• Charts, tables, and images must be sharp, aligned, and clearly labeled.
• Use ASCII hyphens only. Avoid U+2011 (non-breaking hyphen) and other Unicode dashes.
• Citations and references must be human-readable; never leave tool tokens or placeholder strings.

Final checks

• Do not deliver until the latest PNG inspection shows zero visual or formatting defects.
• Confirm headers/footers, page numbering, and section transitions look polished.
• Keep intermediate files organized or remove them after final approval.