Sudoku Generator – Online Tool

👉 Live Demo – Try Now

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🧩 Sudoku Generator (Client-Side, Bootstrap 4.4.1 + JavaScript)

Sudoku Generator is a free, fully client-side tool that creates Sudoku puzzles in five difficulty levels: Very Easy, Easy, Normal, Hard, and Expert.
It includes an interactive solver, mistake highlighting, and the ability to download both the puzzle and its solution as clean, high-quality images.

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📸 Screenshots

Example:

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🚀 Features

• Generate Sudoku puzzles instantly (all client-side).
• Five difficulty levels for beginners and experts.
• Interactive grid with:
  • Number entry
  • Real-time validation
  • Highlighting incorrect inputs
• Download puzzle and solution as PNG images.
• No registration, no backend, no tracking.
• 100% free and unlimited use.

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🛠 Technical Details

This tool is built using:

• Bootstrap 4.4.1 for interface layout and responsive styling.
• Vanilla JavaScript for:
  • Backtracking Sudoku puzzle generator
  • Sudoku solver
  • Difficulty adjustment algorithm
  • Canvas-based PNG export
• HTML/CSS for grid rendering and user interaction.

All puzzle generation and solving happen on the client, ensuring speed, privacy, and zero server load.