The JSON ecosystem offers powerful tools for validation, transformation, querying, and more. This guide surveys the landscape.

Online Tools

JSON Lab (This Site)

• JSON Parser/Editor: Format, minify, syntax checking
• Converters: JSON to CSV, YAML, XML, SQL
• Encoders/Decoders: Base64, URL, JWT, Timestamp
• Validators: Schema validation

Other Online Tools

JavaScript Libraries

Parsing and Serialization

// fast-json-stringify example
const fastStringify = require('fast-json-stringify');
const schema = {
  type: 'object',
  properties: {
    id: { type: 'integer' },
    name: { type: 'string' }
  }
};
const stringify = fastStringify(schema);
const json = stringify({ id: 1, name: 'Test' });

Validation

// zod example
const z = require('zod');

const UserSchema = z.object({
  id: z.number(),
  name: z.string().min(2),
  email: z.string().email(),
  age: z.number().min(0).optional()
});

const user = UserSchema.parse({
  id: 1,
  name: 'John',
  email: 'john@example.com',
  age: 30
});

Transformation

Querying

const JSONPath = require('jsonpath-plus');

// Query example
const data = {
  store: {
    books: [
      { category: 'fiction', price: 10 },
      { category: 'tech', price: 20 }
    ]
  }
};

const result = JSONPath.query(
  data,
  '$.store.books[?(@.price < 15)].category'
);
// ['fiction']

Python Libraries

import orjson

# Fast serialization
data = {...}
json_bytes = orjson.dumps(data)
json_str = orjson.dumps(data, option=orjson.OPT_INDENT_2)

Go Libraries

Java Libraries

Command Line Tools

jq - The Swiss Army Knife

# Format JSON
echo '{"a":1}' | jq .

# Extract field
cat data.json | jq '.name'

# Filter
cat data.json | jq '.users[] | select(.age > 18)'

# Transform
cat data.json | jq '{id: .id, name: .name}'

# Aggregate
cat data.json | jq 'map(.price) | add'

Other CLI Tools

Database Support

JSON in Databases

-- PostgreSQL example
SELECT * FROM users
WHERE data @> '{"role": "admin"}';

CREATE INDEX idx_users ON users USING GIN (data);

Document Databases

API Development

Frameworks with JSON Support

API Documentation

Testing Tools

JSON Schema Test Suites

Schema Generators

Performance Tools

Benchmarking

Analysis

Summary

The JSON ecosystem is rich with tools:

• Online: JSON Lab, JSONLint, JSONFormatter
• JavaScript: AJV, Zod, fast-json-stringify
• Python: orjson, pydantic
• CLI: jq, fx, gron
• Databases: PostgreSQL (jsonb), MongoDB
• Frameworks: Express, FastAPI, Spring

Choose tools based on your language, performance needs, and specific requirements (validation, transformation, querying).