Multi-step browser workflow
Format & Validate JSON
Validate and format JSON online in one browser workflow, with clear syntax errors and consistently indented output for valid data.
Validate and format JSON in one operation
This workflow parses the input before producing formatted output. Invalid JSON stops at the validation step instead of being passed to a formatter that might hide or misrepresent the original syntax problem.
How the JSON workflow works
- Paste a JSON object or array.
- Run the workflow to parse and validate its syntax.
- Correct the displayed error if validation fails.
- Review the consistently indented output when validation succeeds.
- Copy the formatted JSON for use in an editor, request or configuration file.
Common JSON errors it exposes
Typical failures include trailing commas, single-quoted strings, unescaped characters, missing closing brackets and property names without double quotes. The workflow reports the parser error but does not invent a repair that could change the data.
Formatting versus minifying
Formatted JSON is easier for people to inspect and review. Minified JSON removes optional whitespace for transport or compact storage. Use JSON Minifier after validation when smaller output is more important than readability.
Local processing and data safety
Parsing happens in the browser. Even with local processing, keep credentials and production secrets out of copied examples whenever possible, and validate the result in the system that will consume it.
Frequently asked questions
Format & Validate JSONFAQ
What happens with invalid JSON?
Processing stops at the parse step and displays the syntax error.
Is JSON data uploaded?
No. Parsing, validation and formatting run locally in the browser.
Does formatting change JSON values?
Formatting changes whitespace and indentation, not the parsed keys and values. Always review numeric precision and special characters.
What indentation is used?
Valid JSON is returned with consistent readable indentation.
Can this repair invalid JSON automatically?
No. The workflow reports the parse failure so you can correct the source without guessing at the intended structure.
