{}JSON FYI
Topic

JSON for APIs

Best practices for shipping JSON over the wire.

Tools

JSON Minifier

Strip whitespace for compact transport.

JSON to CSV

Convert JSON arrays into spreadsheet-ready CSV.

JSON to XML

Convert JSON into well-formed XML with attributes.

JSON to YAML

Convert JSON into idiomatic YAML 1.2.

JSON Diff

Compare two JSON documents structurally.

JSON Schema Validator

Validate JSON data against a JSON Schema — powered by Ajv.

Guides

JSON vs YAML vs XML

Side-by-side comparison.

How to validate JSON in code

JS, Python, Bash recipes.

JSON best practices for APIs

Naming, nullability, dates, errors.

SyntaxError: Unexpected token '<'

HTML returned instead of JSON — how to detect and fix it.

TypeError: Converting circular structure to JSON

Four patterns for serializing circular data safely.

JSON.stringify returns undefined

Why it happens and how to handle non-serializable values.

JSON.parse() in JavaScript

Complete guide: syntax, reviver, safe parsing, and common errors.

JSON.stringify() in JavaScript

Complete guide: replacer, space, toJSON(), circular refs.

Read and write JSON in Python

json.load(), json.loads(), json.dump(), json.dumps() with examples.

JSON Schema guide

Types, required fields, patterns, $ref, and Ajv validation examples.