Switch between 2 spaces, 4 spaces, or tabs for the output style your team expects.
JSON
Formatter
Validator
Developer Workflow
JSON Formatter
Validate, format, minify, sort keys, and copy JSON directly in the browser. Useful for API debugging, config review, and log cleanup.
Surface line and column details on invalid input so issues are faster to debug.
Inspect root type, key counts, array size, node totals, and character count at a glance.
Input
Raw JSON
Output
Formatted output
Waiting for input. Objects, arrays, and standard JSON primitives are supported.
Preview
Syntax-highlighted preview
Tree
Structure tree
Developer Tools
About JSON Formatter
JSON Formatter is a browser-based developer tools tool on XFreeTool with direct input, quick results, and no signup. Check the input, units, and output against your use case before relying on a result.
01
How to use it
- Enter or paste the information you want to work with.
- Run the tool and review the result shown on the page.
- Verify important results before sharing them or using them in a decision.
02
Frequently asked questions
What does JSON Formatter do?
JSON Formatter is a browser-based developer tools tool on XFreeTool with direct input, quick results, and no signup.
Do I need an account?
No. XFreeTool provides free browser-based tools with direct access.
Can I use sensitive information?
Check how the current tool processes data first, and do not submit sensitive, confidential, or regulated information when you are unsure.
03
Input, output, and validation
Paste or enter technical content, run the tool, and use the output to support debugging, formatting, or data exchange. For structured data, also verify syntax, field types, encoding, and the destination system's constraints.
Example check: start with a minimal sample that contains no keys, tokens, or production data. Verify the structure and result, then apply the same rule to a working copy.