Practical guide
How to use the json validator
The JSON validator parses submitted JSON and presents a readable result when the syntax is valid. It helps locate quoting, comma, bracket and data-type mistakes before a payload reaches an API or configuration file.
Good reasons to use it
- Validate an API request or response sample.
- Format a compact JSON document for review.
- Catch syntax mistakes in configuration or structured data.
A reliable workflow
- Paste JSON without credentials or private customer data.
- Run the validator and correct the first reported syntax issue.
- Repeat until the document parses, then validate it against the required schema.
How to interpret the result
Syntactically valid JSON only proves that the text can be parsed. It does not prove that field names, values, security rules or business logic match the receiving system.
Frequently asked questions
Why are comments rejected?
Standard JSON does not allow comments, although some configuration formats accept JSON-like extensions.
Does valid JSON mean valid structured data?
No. Schema.org and API payloads have additional vocabulary and field requirements beyond JSON syntax.