Tool 01

JSON Validator

Validate, format, compress, search, and inspect JSON with tree and flow views.

Validator

Check and Format JSON

Helpful for APIs, config files, payload testing, and quick cleanup.

Ready

Use Format JSON for readable indentation or Compress JSON to minify the payload into a single line.

Enter JSON and click validate.

Help

How to Use the JSON Validator

1
Paste or type JSON

Enter your JSON into the input area. Use Paste to pull directly from clipboard. Errors report the exact line and column number.

2
Validate, Format, or Compress

Validate checks syntax only. Format JSON re-indents with 2-space tabs for readability. Compress JSON strips all whitespace into a single line for payloads.

3
Review the data analysis

After validation a stats panel shows counts of every type — objects, arrays, strings, numbers, booleans, nulls — plus total keys, max nesting depth, and the exact byte size.

4
Explore with Flow, Tree, or Split view

Switch between Flow (visual parent-child cards), Tree (collapsible hierarchy), or Split (both side by side). Use the search bar to find any key, value, or path instantly.

JSON keys must be double-quoted strings. Trailing commas, single quotes, and JavaScript comments are not valid JSON — use Format JSON to auto-fix indentation after correcting these manually.
ValidateChecks syntax and reports the first error with line + column. Reveals the structure viewer on success.
Format JSONPretty-prints with 2-space indentation. Great for reading minified API responses.
Compress JSONRemoves all whitespace into a single line. Ideal before embedding in env vars or HTTP payloads.
Download JSONSaves the current (validated) JSON as a formatted .json file to your device.