JSON Formatter & Validator
Paste your JSON and press
Validate & Format
JSON Analysis
JSON Formatter & Validator Guide
JSON (JavaScript Object Notation) is a lightweight, human-readable data interchange format. It is language-independent and widely used for transmitting data between a server and a web application, as well as for configuration files and APIs.
String
Number
Boolean
Array
Object
Null
Trailing Comma
Adding a comma after the last item in an object or array.
Single Quotes
Using single quotes instead of double quotes for strings or keys.
Comments in JSON
JSON does not support // or /* */ comments unlike JavaScript.
Better Readability
Minified API responses are hard to read. Formatting adds proper indentation and line breaks so you can spot structure instantly.
Instant Error Detection
Our validator catches syntax errors immediately — missing brackets, bad quotes, trailing commas — with the exact error message.
Minify for Production
Remove all whitespace with one click to reduce JSON payload size before sending it over a network or storing it in a database.
Q1: What is the difference between JSON format and JSON validate?
Formatting (beautifying) adds indentation and line breaks for readability. Validation checks whether the JSON strictly follows the JSON specification (ECMA-404) and is syntactically correct.
Q2: Is this JSON formatter safe to use?
Yes. Everything runs entirely in your browser. Your JSON data is never sent to any server. It is 100% private and secure.
Q3: What is JSON minification?
Minification removes all unnecessary whitespace (spaces, tabs, newlines) from JSON to reduce file size. This is useful for API responses and stored data to save bandwidth and storage.
Q4: Can I validate nested JSON objects?
Yes. Our validator handles deeply nested JSON objects and arrays of any complexity. The depth counter in the analysis panel shows how many levels deep your JSON goes.