Does this tool validate JSON?

Yes. If your JSON has syntax errors, the tool shows the exact error message including the position of the problem, helping you fix it quickly.

What indentation does the formatter use?

The formatter uses 2-space indentation, which is the most common standard for JSON files in modern development.

Can I format large JSON files?

Yes. Since everything runs in your browser, it can handle large JSON payloads. Performance depends on your device but typical JSON files process instantly.

Is my JSON data secure?

Absolutely. Your JSON never leaves your browser. There is no server processing — everything happens client-side in your device's memory.

What is the difference between Format and Minify?

Format (prettify) adds indentation and line breaks for readability. Minify removes all unnecessary whitespace to reduce file size, which is useful for production API payloads.

JSON Formatter & Validator Online — Free

Format, validate, and beautify JSON online for free. Instant formatting with syntax highlighting.

Input (raw JSON)

Output (formatted)

How to Format JSON Online

Paste your JSON
Paste your raw JSON into the input panel on the left. It can be minified, messy, or partially formatted.
Format or minify
Click 'Format' to prettify with 2-space indentation, or 'Minify' to compress it into a single line.
Copy the result
Click 'Copy Output' to copy the formatted JSON to your clipboard, ready to use in your project.

Why Use PDFFlare JSON Formatter?

Instant Formatting

Paste your JSON and get perfectly indented output in milliseconds. No loading screens, no waiting.

Error Detection

Invalid JSON? The tool shows the exact error message with position details so you can fix syntax issues fast.

Format & Minify

Switch between pretty-printed (2-space indent) and minified output with a single click.

100% Client-Side

Your data stays on your device. No server uploads means sensitive API responses and configs remain private.

Frequently Asked Questions About JSON Formatting

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