JSON Schema Validator

Validate JSON against a schema with exact per-field errors

This tool implements a genuinely functional JSON Schema validator in vanilla JavaScript, supporting type, required, properties, items, minimum/maximum, minLength/maxLength, pattern, enum, and additionalProperties. On failure it lists every specific violation with its exact path — such as which field was the wrong type, missing, or out of range — so you can fix your schema or your payload without guessing.

• →Supports type, required, properties, items, min/max, minLength/maxLength, pattern, enum, additionalProperties
• →Lists every specific validation error with its exact JSON path
• →Handles nested objects and arrays at any depth
• →Comes with a sample schema+payload pair showing multiple real failures
• →Watermarked by Cikal Studio Labs · Works on any device, no install required