Omnigraffle

Generate native OmniGraffle .graffle files programmatically. Use this skill whenever the user asks to create, build, or generate an OmniGraffle diagram, network diagram, architecture diagram, flowchart, or any visual diagram that should be saved as a .graffle file. Also trigger when the user mentions "OmniGraffle", ".graffle", "graffle file", or asks for diagrams specifically for macOS/iOS diagramming. This skill generates zipped binary plist packages that open natively in OmniGraffle 7+ without any conversion or import steps. Supports: rectangles with colored fills, text labels (RTF), named l

13 stars 2 forksSoftware Development

Install

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

npx skills add openanvil/omnigraffle-generator --skill omnigraffle

Manual install

git clone --depth 1 https://github.com/openanvil/omnigraffle-generator.git /tmp/omnigraffle-generator
mkdir -p ~/.claude/skills
cp -r /tmp/omnigraffle-generator/. ~/.claude/skills/omnigraffle

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

From the SKILL.md

# OmniGraffle File Generator

Generate native `.graffle` files that open directly in OmniGraffle 7+ on macOS and iOS.

## How It Works

OmniGraffle files are ZIP archives containing a binary Apple plist (`data.plist`) and a preview
JPEG. This skill uses Python's `plistlib` to assemble the document structure and `zipfile` to
package it. The output matches OmniGraffle 7's native format (GraphDocumentVersion 16, zipped).

## ⚠️ Native-quality conventions (READ FIRST)

Five rules separate a clean, editable, professional diagram from a broken one. They were learned
the hard way against real OmniGraffle files — follow them.

1. **Z-ORDER IS FRONT-FIRST (most common bug).** OmniGraffle paints layer index 0 — and the first
   graphic within a layer — at the **FRONT**. This is the REVERSE of SVG / normal painter order.
   So **backgrounds, zone tints, and rack/frame outlines must be the LAST layer (highest index)**,
   never the first — otherwise they sit on top and *hide everything*, and box labels disappear
   "behind" their boxes. Two ways to get it right:
   - With `GraffleBuilder`: add layers FRONT→BACK (title/labels first, background last); or build
     naturally and call `save(z_order="back_first")`.
   - With the SVG converter: author SVG layers back-first; `fix_z_order()` reverses them so
     OmniGraffle renders exactly like the SVG preview.
2. **Give frames/zones a transparent or translucent fill** (`fill_color=None`, or low opacity) and

Read the full skill on GitHub

Details

Skill name: omnigraffle
Repository: openanvil/omnigraffle-generator
License: MIT
Repo updated: 24 August 2026

FAQ

What does the Omnigraffle skill do?

How do I install the Omnigraffle skill?

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

Is Omnigraffle popular?

It lives in openanvil/omnigraffle-generator, which has 13 GitHub stars and 2 forks.

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