Developer

JSON Formatter

Use this JSON formatter to clean messy API responses, validate copied JSON, minify configuration data, and prepare readable examples for documentation or bug reports. Formatting happens locally in your browser.

How to use JSON Formatter

Paste a JSON object, array, API response, or config snippet.
Use Format to pretty print it, Minify to compress it, or validation feedback to find syntax errors.
Copy the cleaned output into docs, bug reports, config fields, or test data.

Example workflow

Paste a one-line API response, format it, then inspect nested fields before deciding which value caused a bug.

Privacy and limits

JSON text is parsed and formatted locally in the page. Avoid tools that upload sensitive API payloads when local formatting is enough.

The formatter does not guess repairs for invalid JSON. Fix the reported comma, quote, bracket, or escape issue, then format again.

Common uses

Pretty print an API response before reading it.
Minify JSON before pasting it into a config field.
Find syntax errors in copied JSON snippets.
Clean sample payloads for documentation or bug reports.

FAQ

Does this JSON formatter upload my data?

No. Formatting and validation happen locally in your browser.

Can it fix invalid JSON automatically?

It validates and reports parsing errors, but it does not guess or rewrite broken JSON for you.

What is the difference between format and minify?

Format adds indentation for reading. Minify removes extra whitespace for compact copying.