JSON guides
7 practical guides on json topics. Each one ends with a free tool that runs entirely in your browser.
- How to Fix "Unexpected Token" and Other Invalid JSON Errors
The handful of mistakes behind almost every JSON parse error: trailing commas, single quotes, unquoted keys, comments, and stray characters. Learn to spot and fix each one fast.
3 min read · JSON Formatter & Validator
- JSON vs YAML: When to Use Which
Both formats store structured data, but they excel at different jobs. A practical comparison of syntax, comments, safety, tooling, and the YAML pitfalls that bite people in production.
3 min read · JSON to YAML Converter
- How to Convert JSON to CSV (Nested Data, Arrays, and Excel Gotchas)
Flatten JSON into a spreadsheet-ready CSV. Learn how to handle nested objects and arrays, quote values correctly, and avoid the common Excel encoding problems.
2 min read · JSON to CSV
- JSONPath Cheatsheet: Query JSON Like You Query XML
A practical JSONPath reference: root, child, wildcard, recursive descent, array slices, and filters, with a worked example and notes on implementation differences.
2 min read · JSONPath Tester
- JSON Schema for Beginners: Validate Your Data with a Few Keywords
What JSON Schema is, the handful of keywords you need (type, properties, required, enum, minimum), and how to write and test a schema for real data.
2 min read · JSON Schema Generator
- How to Convert JSON to TypeScript Interfaces (and Why Types Aren't Enough)
Generate TypeScript types from a JSON sample, handle optional fields, nulls, and unions, and learn why runtime validation still matters.
2 min read · JSON to TypeScript
- How to Compare Two JSON Files (Semantic Diff vs Text Diff)
Why a plain text diff is noisy for JSON, how a semantic diff ignores key order and whitespace, and how to read added, removed, and changed values.
2 min read · JSON Diff