ValidatorsJSON Validator

JSON Validator

Validate JSON syntax instantly with detailed error messages showing exactly where parsing fails. For valid JSON, displays structural statistics including object count, array count, key count, nesting depth, and value type breakdown.

JSON Validator guide

Paste JSON to quickly confirm whether it is valid and inspect useful structural details. This validator is useful for API responses, config files, logs, and examples that need syntax checking before they are shared or committed.

Key features

Validate JSON syntax and report parsing failures
Show structural statistics for valid JSON
Inspect nesting depth, key count, arrays, objects, and value types
Run validation locally in the browser

Common use cases

Check copied API responses before using them in tests
Validate configuration files before committing changes
Find malformed JSON from logs, webhooks, or third-party integrations

Frequently asked questions

Does this validate JSON Schema?

This tool checks JSON syntax and structure. It does not currently validate against a JSON Schema document.

What happens when JSON is invalid?

The validator reports the parse error so you can locate and fix the syntax issue.

Is my JSON sent to a server?

No. Validation runs locally in your browser.

JSON Formatter

Instantly format, beautify, validate, and minify JSON data with syntax highlighting and error detection. Supports pretty-printing with configurable indentation and one-click minification for production use.

JSON Insight

Analyze and explore JSON data structure visually. Automatically parses any JSON input, renders a collapsible structure tree with type annotations, generates precise JSONPath expressions on click, and computes field-level statistics (count, min, max, avg) for array fields. Ideal for quickly understanding complex or unfamiliar API responses.

JSON ↔ YAML

Bidirectional JSON to YAML and YAML to JSON converter. Instantly transform JSON objects into clean YAML configuration files, or parse YAML back to structured JSON. Handles nested objects, arrays, and all scalar types.

JSON Pipeline

Build multi-step JSON data processing pipelines by chaining steps — JSONPath extraction, Filter, Sort, Select (pick/omit fields), Slice, Flatten, custom JavaScript Transform, and output Format. Intermediate results are visible after each step. Share any pipeline configuration instantly via URL.