You are responsible for key management and output validation.

JSON Formatter & Validator

Format, validate, and minify JSON data with syntax highlighting. RFC 8259 compliant parser. Processing happens locally in your browser.

JSON Input

Result

Preview will appear here...

Formats JSON with proper indentation (2 spaces) for readability.

Removes all whitespace to reduce file size for transmission.

Validates JSON against RFC 8259 specification.

Your JSON data is processed locally in your browser. No data is sent to any server.

Frequently Asked Questions

Is my JSON data uploaded?

No. Formatting, validation, and minification all happen locally in your browser.

What can the JSON tool do?

Format, minify, and validate JSON against RFC 8259, with error position reporting and document statistics.

Can it handle large documents?

Yes, but very large documents depend on your browser's memory and performance.

Decode Base64 before parsing JSON

Inspect JSON strings and Unicode content

Compare JSON documents line by line

Convert epoch timestamps inside JSON payloads

Your inputs remain on your device.