JSON Schema Validator Online
Paste your JSON data and a JSON Schema to verify structure, required fields, and types before shipping to production.
100% private Instant processing Free forever
How it works
1
Paste JSON data
2
Paste your JSON Schema
3
Click Run to validate
FAQ
Is JSON Schema Validator free?+
Yes. wikawe data tools are free to use with no account required.
Is my data uploaded to a server?+
No. All formatting and conversion runs entirely in your browser — nothing is sent to our servers.
Do I need to install software?+
No. Open the tool in your browser, paste your data, and run — it works on desktop and mobile.
Related tools
JSON Validator
Check if JSON is valid
JSON Formatter
Pretty-print JSON with indentation
JSON Path Tester
Query JSON with JSONPath