Learn
How to validate JSON
Direct answer: To validate JSON, parse it with a strict JSON parser (or online validator). If you also need structure guarantees, validate the parsed value against a JSON Schema. BracketView highlights syntax errors as you type and supports schema validation in the workspace.
Step-by-step
Step 1
Paste the payload
Open BracketView and paste your JSON into the editor.
Step 2
Fix syntax errors
Resolve missing commas, unquoted keys, and trailing commas until the document parses.
Step 3
Validate against schema (optional)
Open the Schema tool, paste a JSON Schema, and review field-level errors.
Examples
Invalid (missing comma)
{
"ok": false
"code": 400
}Valid
{
"ok": false,
"code": 400
}FAQ
What is the difference between syntax validation and schema validation?
Syntax validation checks whether text is valid JSON. Schema validation checks whether the data matches an expected shape.