JSON5 Formatter & Validator
Validate JSON5 input and convert it to formatted or minified JSON without uploading configuration data.
Input
Paste JSON5 to validate and normalize
Output
Formatted JSON output parsed from JSON5
Paste JSON5, then choose Format JSON5 or Minify JSON5.
What JSON5 accepts
JSON5 allows comments, trailing commas, single-quoted strings, and unquoted object keys. Output is normalized as standard JSON.
Sample input and expected output
Input {service:'payloadharbor', retries:2,} formats to JSON with quoted keys and two-space indentation.
What this JSON5 Formatter does
Use this JSON5 formatter and validator for configuration files that allow comments, trailing commas, single quotes, or unquoted keys. It converts JSON5-style input into clean, formatted JSON output.
When developers use it
- Inspect JSON5 config files from frontend tooling or local developer settings.
- Remove comments and normalize relaxed JSON5 syntax before sharing with systems that expect standard JSON.
- Find syntax errors in JSON5 snippets without installing a local parser.
Privacy, input, and output
JSON5 parsing runs locally in the browser session. The source text is not uploaded by PayloadHarbor.
Paste JSON5 input, then format it into standard JSON with two-space indentation. Copy or download the formatted result when validation succeeds.
Validation rules and limitations
- Output is standard JSON, so comments and relaxed JSON5 syntax are not preserved.
- The tool validates syntax only; it does not validate against an application schema.