JSON Formatter & Validator
Dictation needs Chrome, Edge, or Safari.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data-interchange format used by millions of APIs, configuration files, and databases. It's human-readable, easy to parse, and supported by every modern programming language. Whether you're debugging an API response, editing a config file, or inspecting a data export, properly formatted JSON is essential.
How to Use This JSON Formatter
- Paste your raw or minified JSON into the input box above.
- Click Format to beautify it with proper indentation, or Minify to compress it to a single line.
- If your JSON has a syntax error, the tool will show exactly where it is so you can fix it instantly.
- Click Copy to copy the formatted result to your clipboard.
Frequently Asked Questions
Is this JSON formatter free?
Yes. Tooltle is completely free with no signup, no limits, and no premium tiers. And it always will be.
Does the JSON formatter send my data anywhere?
No. All formatting and validation happens entirely in your browser using JavaScript. Your JSON never leaves your device.
Can I format large JSON files?
Yes, but performance depends on your device's memory and browser. For very large files (10MB+), we recommend using a desktop JSON editor.