Paste your JSON and get instant validation - errors shown with context, plus a summary of keys, values and depth.
JSON (JavaScript Object Notation) was formalised by Douglas Crockford in the early 2000s and became an ECMA standard (ECMA-404) in 2013. It is now the dominant data interchange format for web APIs, surpassing XML in most modern applications. JSON's lightweight, human-readable structure - built around key-value pairs, arrays, and nested objects - makes it ideal for REST APIs, configuration files, and database query results. A single misplaced comma, missing quotation mark, or incorrect bracket can render an entire JSON payload invalid, causing application failures that are often difficult to debug without proper tooling.
India's IT services sector, contributing approximately 7.5% of GDP and employing over 5 million professionals as of 2024, works extensively with JSON APIs daily. Backend developers at companies like Infosys, Wipro, TCS, and thousands of product startups in Bengaluru, Pune, and Hyderabad regularly debug JSON from third-party APIs including payment gateways (Razorpay, PayU), logistics providers (Delhivery, Shiprocket), and government APIs such as GST NIC portals and Aadhaar OTP APIs. The JSON:API specification and OpenAPI 3.0 - both JSON-based standards - are widely adopted in Indian enterprise software development.
Paste any JSON string into the validator to instantly check for syntax errors. Valid JSON is automatically pretty-printed with proper indentation for readability. Common errors caught include trailing commas (not allowed in standard JSON), single-quoted strings, unescaped special characters, and mismatched brackets - all highlighted with line-specific error messages to speed up debugging.