JSON Formatter & Validator

JSON (JavaScript Object Notation) is the language of the web. It's concise, readable, and powerful. But when it's minified or broken, it's a nightmare. This tool is your instant fix for unreadable or invalid JSON.

Why Do We Need a JSON Formatter?

Computers love Minified JSON—JSON with all whitespace removed. It saves bandwidth and loads faster. API responses often look like this:

{"status":"ok","data":[{"id":1,"name":"Alice"},{"id":2,"name":"Bob"}]}

Humans, however, cannot read this efficiently. This tool acts as a "Beautifier" that adds proper indentation (whitespace) and newlines to turn that blob into a structured, readable tree.

Real-World Use Cases

• API Integration: When connecting to a third-party API (like Stripe, Twilio, or AWS), you will often copy the response body from your terminal or logs. Pasting it here helps you understand the structure immediately.
• Configuration Files: Many developer tools (VS Code, ESLint, Prettier) use .json config files. A missing comma or mismatched brace effectively breaks your environment.

Technical Deep Dive: BigInt Precision

Standard JSON has a limitation with numbers. It uses 64-bit floating point numbers (IEEE 754). This means very large integers (bigger than 2⁵³ - 1) might lose precision.

For example, a Tweet ID like 1500000000000000001 might get rounded to 1500000000000000000. If exact precision is critical for massive integers, ensure you handle them as strings in your application code.