JSON Inspector
Validate against schemas and estimate JSON payload sizes.
Inspecting JSON schemas and payload size
API responses and config blobs need validation beyond syntax. JSON Schema checks types, required fields, and enum constraints. Size estimators help before caching multi-megabyte documents in mobile clients or edge workers.
Schema validation errors should cite JSON Pointer paths so engineers fix the correct nested field. Draft-04 versus 2020-12 schema keywords differ; confirm which dialect your pipeline expects before rejecting valid documents.
Byte size estimates include string encoding overhead but may not match gzip transport size. Use them to spot accidental embedding of base64 images inside JSON configs during code review.
Validate staging responses locally when they include unreleased feature flags or internal account identifiers. Schema inspection in the browser keeps payloads off external validators.
Reference Guide
QA tool - all processing runs locally in your browser. No data is sent to a server.
Operation: json-schema-validate
Paste input, click Run, and copy the result. For two-input tools, fill both fields before running.
Example Input
{"name":"Ada","age":30}Example Secondary Input
{"type":"object","required":["name"],"properties":{"name":{"type":"string"}}}A sample loads automatically when you open this tool. Use Load Sample to reset it.