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JSON Formatter

Paste JSON to format it with clean indentation, validate it, or minify it for production. Errors are reported with the exact problem. Your JSON is processed locally — it is never sent to a server, so it is safe for API keys and private payloads.

What this JSON Formatter does

Format pretty-prints JSON with 2-space indentation. Validate checks the syntax and tells you precisely what is wrong when it fails. Minify removes all whitespace to shrink payloads. Because everything runs in your browser, even large or sensitive JSON documents stay private.

Common JSON errors

Trailing commas, single quotes instead of double quotes, and unquoted keys are the three most common mistakes. This tool flags them immediately.

Frequently Asked Questions

Is my JSON uploaded anywhere?

Never. Formatting and validation happen locally in your browser.

What is the difference between format and minify?

Format adds indentation to make JSON readable; minify strips whitespace to make it as small as possible.