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Daily Drift Hub

Free JSON Formatter & Validator Online

Format, validate, minify, and visualize JSON instantly using our VS Code-style editor.

JSON Editor
Preview
{
  "name": "Daily Drift Hub"
}

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data-interchange format used in APIs, web applications, and configuration files. It is easy for humans to read and write and easy for machines to parse.

How to Use This Tool

  • Paste JSON into the editor or drag-and-drop a .json file
  • Click Format to pretty-print with 2-space indentation
  • Click Minify to compress JSON to a single line
  • Switch to Tree view to explore nested structures interactively

How to Fix Invalid JSON

  • Check for missing commas between key-value pairs
  • Ensure all keys are wrapped in double quotes
  • Remove trailing commas after the last item
  • Validate nested objects and arrays have matching brackets

Why Use This JSON Formatter?

  • VS Code-style editor with syntax highlighting
  • Instant validation with precise error messages
  • Interactive tree visualization for nested data
  • Keyboard shortcuts for power users
  • 100% secure — runs entirely in your browser

FAQs

What does "Unexpected token" mean when formatting JSON?

This error usually means your JSON has a syntax mistake such as a missing comma, an unquoted key, or a trailing comma after the last item in an object or array. Paste your JSON into the editor and the error message will point to the exact position of the problem.

Does JSON allow trailing commas?

No. The JSON specification (RFC 8259) does not permit trailing commas. JSONC (JSON with Comments) does, but standard JSON parsers will reject them. Remove the trailing comma or use this tool to validate your JSON.

What is the difference between JSON and JSONC?

JSON is a strict data format with no comments and no trailing commas. JSONC (used by VS Code settings files) allows single-line and multi-line comments as well as trailing commas, but is not valid JSON.

What is the maximum size of JSON this tool can handle?

This tool runs in your browser, so the limit depends on your device memory. Most modern browsers handle JSON files up to 50-100 MB comfortably. For very large files, consider using a command-line tool like jq.

What is the difference between pretty-print and minify?

Pretty-print adds indentation and line breaks to make JSON human-readable. Minify removes all unnecessary whitespace to reduce file size, which is ideal for network transmission and storage.

Is Free JSON Formatter & Validator Online — Pretty-Print & Minify free to use?

Free JSON Formatter & Validator Online — Pretty-Print & Minify is completely free and runs in your browser.

Does Free JSON Formatter & Validator Online — Pretty-Print & Minify send my data to a server?

No. Free JSON Formatter & Validator Online — Pretty-Print & Minify processes input directly in your browser.

Do I need to create an account to use Free JSON Formatter & Validator Online — Pretty-Print & Minify?

No account is required to use Free JSON Formatter & Validator Online — Pretty-Print & Minify.

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