JSON Formatter Online
Format, beautify and validate JSON online. Pretty-print minified JSON, find syntax errors, then copy or download the result locally.
JSON formatter
Free JSON Formatter Online
This JSON formatter turns minified, compact or messy JSON into readable structured output. It validates syntax first, then formats API responses, config files, logs and webhook payloads locally in your browser.
How to use this tool
- Paste your text into the input field.
- Click the action button to process it locally in your browser.
- Copy or download the result.
Privacy
This tool runs in your browser. Your text is not uploaded to a server.
Private browser-based JSON formatting
Paste JSON into the formatter to make it readable with consistent indentation. Processing runs locally in your browser, so the JSON text is not uploaded to a server for formatting.
Use this when you need to inspect API responses, config files, logs, webhooks, package files or copied JSON snippets quickly.
Formatter, beautifier and validator in one tool
The tool parses JSON before formatting. If the input has invalid syntax, you receive an error instead of a misleading output.
After formatting, you can copy the readable JSON or download it as a file.
JSON Formatter Online FAQ
Is my JSON uploaded?
No. The formatter runs in your browser and does not upload your JSON text to a server for processing.
Can this tool validate JSON?
Yes. The formatter parses the input first. If the JSON is invalid, the tool shows an error instead of formatting it.
Can I format minified JSON?
Yes. Paste compact or minified JSON and click Format JSON to add indentation and line breaks.
Can I copy or download the formatted result?
Yes. After formatting, you can copy the output or download the formatted JSON file.