Developer Utilities

Essential tools for developers, engineers, and architects

JSON to Code Converter

Convert JSON objects to typed data structures in Python, TypeScript, Go, Java, and C#. Handles nested objects automatically.

PythonTypeScriptGoJavaC#

SQL to ER Diagram

Paste CREATE TABLE SQL statements and visualize your database schema as an Entity-Relationship diagram.

Mermaid.jsAuto RelationsPK/FK Detection

Cron Expression Generator

Build cron expressions with an intuitive UI or explain existing cron strings in human-readable format.

BuilderExplainerNext Runs

Built for Developers, by Developers

These tools are designed to save you time on repetitive tasks. All processing happens in your browser—no data is sent to our servers. Fast, private, and always free.

Client-side processing
Instant results
Unlimited usage
Copy-ready output

Developer Utilities: Tools That Speed Up Your Workflow

Every developer knows the pain of repetitive tasks: converting JSON to typed structures, visualizing database schemas, or figuring out cron syntax. Our Developer Utilities suite provides fast, reliable tools that handle these tasks instantly—right in your browser.

Our Tool Suite

JSON to Code

Generate type-safe code from JSON in 5 languages. Perfect for API response handling and data modeling.

SQL to ER Diagram

Visualize database relationships instantly. Great for documentation and understanding legacy schemas.

Cron Generator

Build cron expressions visually or decode existing ones. Never guess cron syntax again.

Why These Tools Are Free

We believe developer tools should be accessible to everyone—from students learning to code to senior engineers at enterprise companies. All processing happens client-side in JavaScript, so there's no server cost for us and complete privacy for you.

Privacy & Security

  • No Data Transmission - Your JSON, SQL, and cron expressions never leave your browser
  • No Tracking - We don't log your input or output
  • No Account Required - Use instantly without registration
  • Open Processing - View the source code in your browser's developer tools

These tools are designed to integrate seamlessly into your development workflow. Bookmark them, share them with your team, and use them as often as you need.