FormatPaste

JSON Formatter

Paste JSON, format it instantly, then copy clean pretty-printed output.

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Input

paste here

Output

formatted

Free JSON formatter

Format JSON online without extra steps

Use this JSON formatter when you need to quickly clean messy JSON, pretty print a compact API response, format copied configuration, or remove paste artifacts before sharing data. Paste your JSON on the left and copy formatted JSON from the right.

Pretty print JSON

Turn minified or messy JSON into readable indented JSON with clean spacing.

Fix paste artifacts

Clean common copied-code problems before formatting, including fences and accidental line numbers.

Copy formatted JSON

Format, review, and copy output in one screen without navigating to another tool.

How this JSON formatter helps

Before and after formatting

Paste compact, copied, or hard-to-read JSON into the input pane. FormatPaste cleans common paste artifacts first, then formats the code into readable output that is easier to scan, debug, share, or copy into your editor.

Common JSON formatting use cases

Use it for quick snippets from documentation, AI chat output, Stack Overflow answers, config examples, API responses, old files, minified blocks, and code that picked up line numbers or markdown fences while being copied.

Safe paste reminder

FormatPaste is built for speed, but you should avoid pasting passwords, API keys, tokens, private keys, recovery codes, customer data, or other secrets into any online formatter. Use local tools for sensitive code.

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JSON Formatter FAQ

How do I format JSON online?

Paste JSON into the input box. FormatPaste formats it automatically and shows copy-ready output on the right.

Is this JSON formatter free?

Yes. The JSON formatter is free and designed for quick paste, format, copy workflows.

Does this JSON formatter validate JSON?

If the JSON is invalid, the formatter returns a parser error instead of silently changing the data.

Can I format minified JSON?

Yes. Paste compact JSON and it will be pretty printed with readable indentation.