Format and validate JSON

What this tool does

The tool parses JSON locally, preserves valid primitives as well as objects and arrays, and renders every value as text rather than HTML. Input is limited to 2,000,000 characters to protect the page. Validation checks JSON syntax, not whether the data matches an external schema. Turn hard-to-read JSON into clear output or a compact payload without uploading code.

Common uses

• Pretty-print an API response or configuration file.
• Minify JSON before copying it into another tool.
• Find a syntax error without sending private payloads to a server.