JSON Validator

All-in-One JSON Validator and Formatter

Working with JSON data can be tricky, especially when a single misplaced comma breaks everything. This JSON Validator goes beyond basic syntax checking to give you a complete toolkit for handling JSON data like a pro.

Smart Error Detection

When your JSON has problems, this tool tells you exactly where to look. You get the specific line number, column position, and a snippet of the problematic code. It even suggests what might be wrong, like missing quotes or trailing commas, so you can fix issues in seconds instead of hunting through hundreds of lines.

Format Your JSON Your Way

Choose between readable beautified output with your preferred indentation (2 or 4 spaces) or compact minified code that saves bandwidth. You can also sort all keys alphabetically, which makes comparing similar JSON structures much easier.

Auto-Repair Common Mistakes

Pasted JSON from a JavaScript file with single quotes? Got trailing commas that strict parsers reject? The repair feature automatically fixes these common issues, including unquoted property names and JavaScript-style comments.

Query Your Data with JSONPath

Need to extract specific values from complex JSON? Use JSONPath expressions like $.users[*].name to pull exactly what you need. Perfect for testing API responses or exploring large data structures.

Compare Two JSON Files

See what changed between two versions of your data. The comparison tool highlights added, removed, and modified values with their exact paths, making it easy to track differences in configuration files or API responses.

Multiple Input Options

Paste your JSON directly, drag and drop a file, or fetch data from any URL. Sample JSON templates help you get started quickly when testing or learning.

Instant Statistics

Get insights into your JSON structure: total size, number of keys and values, nesting depth, object and array counts. Useful for understanding complex data at a glance.