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Life & fun · March 17, 2016

JSON Lint

A Simple JSON validator and formatter

JSON Lint launched on March 17, 2016 with 5 votes. The site was still online in September 2026, 10 years on.

What it does

JSONLint is the free online validator, json formatter, and json beautifier tool for JSON, a lightweight data-interchange format.

JSONLint is a validator and reformatter for JSON, a lightweight data-interchange format. Copy and paste, directly type, or input a URL in the editor above and let JSONLint tidy and validate your messy JSON code. JSON (pronounced as Jason), stands for "JavaScript Object Notation," is a human-readable and compact solution to represent a complex data structure and facilitate data interchange between systems. It's a widespread data format with a diverse range of applications enabled by its simplicity and semblance to readable text. As such, it's used by most but not all systems for communicating data. There are several reasons why you should consider using JSON, the key reason being that JSON…from jsonlint.com

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