Drawing Analyzer

Pre-process construction drawing PDF sets into structured text indexes so Claude can answer questions faster, cheaper, and more accurately. Use this skill whenever a user mentions construction drawings, PDF drawings, takeoffs, drawing sets, plans, or wants to extract information from construction documents. Trigger on phrases like "analyze my drawings", "run drawing analyzer", "process these drawings", "how many footings", "what is the slab area", or any question about quantities, elements, or scope from a set of construction drawings. This skill runs once on a drawing set and creates lightwei

50 stars 9 forksImages, Video & Audio

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add hamzaabduljabbar/construction-drawing-analyzer --skill drawing-analyzer

Manual install

git clone --depth 1 https://github.com/hamzaabduljabbar/construction-drawing-analyzer.git /tmp/construction-drawing-analyzer
mkdir -p ~/.claude/skills
cp -r /tmp/construction-drawing-analyzer/. ~/.claude/skills/drawing-analyzer

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Drawing Analyzer Skill

Pre-processes a set of construction drawing PDFs into structured, lightweight text indexes. Run this once on any new drawing set. After it completes, answer questions by reading the indexes first, then targeting only the specific drawing needed.

## When to run this skill

- User uploads or points to a folder containing construction drawing PDFs
- User asks any question about quantities, elements, areas, or scope from drawings
- User says "run drawing analyzer", "process my drawings", or "analyze these drawings"
- Any takeoff, footing count, slab area, or element count request

---

## Phase 1: Split and extract

**Goal:** Break the merged PDF into individual sheets. Extract text and create an image of each.

Run the PDF splitter script first:

```
scripts/split_drawings.py
```

For each sheet produced:
1. Save as an individual PDF: `sheets/SHEET-001.pdf`, `sheets/SHEET-002.pdf`, etc.
2. Extract all vector/text layer content → save as `sheets/SHEET-001.txt`
3. Render the sheet as an image at maximum resolution → save as `sheets/SHEET-001.png`

**Important:** Do NOT use pattern matching scripts to classify drawings. Use Claude vision to read each sheet image and determine its type. Scripts cannot reliably handle the variation in construction drawing formats.

---

## Phase 2: Build the sheet classification index

Read each sheet image (`.png`) and text file (`.txt`) and classify every sheet.

Output file: `indexes/sheet-classification.md`

Read the full skill on GitHub

Details

Skill name: drawing-analyzer
Repository: hamzaabduljabbar/construction-drawing-analyzer
Repo updated: 25 August 2026

FAQ

What does the Drawing Analyzer skill do?

How do I install the Drawing Analyzer skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add hamzaabduljabbar/construction-drawing-analyzer --skill drawing-analyzer. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Drawing Analyzer popular?

It lives in hamzaabduljabbar/construction-drawing-analyzer, which has 50 GitHub stars and 9 forks.

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