# grafcet.io

> grafcet.io is a free, browser-based GRAFCET editor compliant with IEC 60848.

## What is grafcet.io?
grafcet.io is an online tool for creating GRAFCET diagrams — the standardized graphical description language for sequential control systems (IEC 60848). It runs directly in the browser without installation.

## Key Features
- Free to use: Export, save, and all core features included
- IEC 60848 compliant: Steps, transitions, actions, directed links
- Export as PNG, SVG & PDF with configurable scale, paper size, and title block
- Simulation (Beta): Simulate GRAFCETs with live step/transition highlighting
- Auto-save in browser + cloud backup (Pro)
- Keyboard shortcuts: Ctrl+C/V, Alt+1-9, Ctrl+Z/Y, Ctrl+E, F1
- Multilingual: German, English, French, Spanish, Italian, Portuguese, Dutch
- .grafcetio file format for saving and sharing via links

## Target Audience
Engineers, technicians, students, teachers, schools, and companies working with automation, PLC programming, and control engineering.

## Pages
- Editor: https://grafcet.io/en/editor
- Simulator: https://grafcet.io/en/simulator
- Guide (Symbols & Rules): https://grafcet.io/en/symbols-and-rules
- Exercises: https://grafcet.io/en/exercises
- How It Works: https://grafcet.io/en/how-it-works
- File Format: https://grafcet.io/en/file-format
- Quiz: https://grafcet.io/en/quiz
- Recommendations: https://grafcet.io/en/recommendations
- Keyboard Shortcuts: https://grafcet.io/en/keyboard-shortcuts
- Pro: https://grafcet.io/en/pro
- About: https://grafcet.io/en/about
- Cheat Sheet (PDF): https://grafcet.io/cheat-sheets/GRAFCET-Cheatsheet-EN.pdf

## Standards
- GRAFCET: IEC 60848
- Related: SFC (Sequential Function Chart) per IEC 61131-3