Online JSON Formatter

Beautify, validate, and minify your JSON data. 100% private, client-side processing.

JSON Formatter & Validator

Beautify, minify, and validate your JSON data instantly. All processing happens locally in your browser.

JSON Editor

Paste/Type your JSON below

0 characters

How to Format and Validate JSON?

JSON (JavaScript Object Notation) is the language of the web, but raw JSON often looks like a messy wall of text. Here is how to clean it up:

Paste JSON: Copy your raw JSON string and paste it into the large editor area.
Format (Beautify): Click the "Format / Validate" button. The tool will parse your code, applying proper indentation (2 spaces) and line breaks.
Minify: If you need to save space (e.g., for production), click "Minify" to remove all unnecessary whitespace.
Validate: If there is a syntax error (like a missing comma), the tool will show an error message pointing to the issue.

Why use CodeCoffeeTools JSON Formatter?

Instant Validation: Don't let a missing bracket break your app. Catch syntax errors before you deploy.
Local Processing: Unlike many API-based formatters, this runs entirely in your browser memory.
Collapsable Nodes: (Coming Soon) We are working on an interactive tree view to collapse objects and arrays.

Is it Safe to Paste API Keys or Data?

Yes, absolutely. We understand that JSON often contains sensitive user data or private keys.

Because CodeCoffeeTools operates with a client-side architecture, the data you paste into this text area never leaves your computer. It is processed using JavaScript in your own browser. We have no way of seeing or storing your data.

Frequently Asked Questions

What is the difference between Format and Minify?

Format (or Beautify) adds spaces and newlines to make the code human-readable. Minify removes all those characters to make the file size as small as possible for machines to read.

Why do I get a "Parse Error"?

JSON is strict. Common errors include using single quotes instead of double quotes for keys, or trailing commas at the end of lists. Our validator will help you find these.

Validate & Format JSON

Paste your minified or messy JSON to instantly prettify it. We use a robust parser to check for syntax errors.

Security Note

Developer data is sensitive. That's why this tool runs strictly in your browser. No API calls, no storage.