ToolAlto Guide

How to Format JSON for Easier Reading

Learn how to turn compact or messy JSON into readable, indented JSON and how to spot common formatting problems.

What formatted JSON looks like

Formatted JSON uses indentation and line breaks to make nested objects and arrays easier to inspect.

Paste your JSON

Copy the JSON into a formatter. Avoid changing values manually before you know whether the problem is formatting or invalid syntax.

Format it

Use the formatter to add consistent indentation and line breaks. This makes keys, arrays, and nested objects much easier to scan.

If formatting fails

The JSON may contain a syntax error such as a missing comma, unmatched bracket, or incorrectly quoted key. Use a JSON validator to identify invalid input.

Minify when needed

Once the data is valid, minification can remove unnecessary whitespace when a compact representation is useful.

Try the free ToolAlto JSON Formatter

Use the tool directly in your browser for a quick result.

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