cheatsheet-maker

A Claude Code skill that turns your lecture slides, homework, and notes into a print-ready exam cheatsheet — maximizing every square centimeter of A4 paper.

What it does

• Default output: 2-page double-sided A4 landscape Word (.docx), 3 columns, 0.5cm margins
• Auto-extracts key points from uploaded PPTs, PDFs, and notes
• Adaptive density: fills space intelligently — adds explanations when under 2 pages, compresses to formula-only when over
• Precise page-count estimation: counts every h(), np(), p(), img() entry against a calculated capacity (≈49 lines/column, 6 columns for 2-page A4 landscape = 294 lines) before delivery
• Auto "PROBLEM-SOLVING WALKTHROUGH": when under page count, appends compact worked examples (≤5 lines each) for every major topic before filling remaining space with sub-lines
• Cross-platform toolchain: unpack/repack docx and PDF preview commands provided for Windows, macOS, and Linux
• Math formulas: Word-native OMML format (selectable, editable, prints sharp)
• Concept comparison tables: automatically suggests tables for easily-confused concepts
• Color-coded sections: each chapter gets its own color; examples and answers in different colors
• Diagrams and images: crops diagrams from lecture slides (PDF < 25 MB), draws box diagrams with docx tables, or falls back to ASCII-art
• PDF size-aware: automatically switches to text-only extraction for large PDFs (≥ 25 MB) to avoid memory issues
• Compression strategies: step-by-step playbook when content won't fit

Example

Installation

git clone https://github.com/Kevin88866/cheatsheet-maker-skill.git "%USERPROFILE%\.claude\skills\cheatsheet-maker"

Restart Claude Code if this is your first time adding a skill. Otherwise it hot-reloads automatically.

Usage

Just describe what you need — Claude picks up the skill automatically:

"Make me a cheatsheet for my statistics final"

"I have a PPT and 3 homework sets — compress them into a cheatsheet"

"Help me condense these notes onto one A4 sheet"

You can also invoke it directly with /cheatsheet-maker.

File structure

cheatsheet-maker/
├── SKILL.md                          # Main skill entry point
└── references/
    ├── layout-spec.md                # A4 3-column docx-js code template
    ├── formula-handling.md           # Word math formula insertion (OMML + Unicode)
    ├── comparison-tables.md          # Concept comparison table templates
    ├── compression-tactics.md        # Strategies when content won't fit
    └── extraction-prompts.md         # How to extract key points from PPTs/homework

Layout specs

Parameter	Value
Paper	A4 landscape
Margins	0.5 cm all sides
Columns	3 (4 for extreme cases)
Column spacing	0.5 cm
Chinese font	DengXian 5.5pt
English font	Calibri 6.5pt
Default page count	2 pages (double-sided)

Diagram support

Mode	Trigger	Diagram behavior
Screenshot enabled	Total PDF size < 25 MB	Crop diagrams from slides with pymupdf + Pillow
Screenshot disabled	Total PDF size ≥ 25 MB	Replace diagrams with concise text descriptions
Self-drawn	No source image	Draw with docx tables (colored cells + arrow chars) or ASCII-art

Requirements

• Claude Code with docx npm package (npm install -g docx)
• pymupdf (pip install pymupdf) — PDF text extraction and slide cropping
• Pillow (pip install Pillow) — image cropping
• LibreOffice (for PDF preview — soffice --headless --convert-to pdf cheatsheet.docx)
• pandoc (for reading existing documents)

Output location

The generated .docx is saved to the same directory as your source materials (or the project workspace directory), then returned via present_files.