Guides & tips
Developer Guides
Beginner-friendly developer guides on JSON, encoding, tokens and web data formats. Guides explain formats like JSON, CSV, Base64 and JWT with short examples. The free developer tools format, validate, encode and decode data.Start with how to format JSON, learn what a JWT is and how to decode it safely, convert data with CSV to JSON, and compare HEX, RGB and HSL colour codes. Every example runs in your browser, so you can test it with your own data privately.
How to Convert CSV to JSON (and JSON to CSV): Step-by-Step Guide
What CSV and JSON are, how to convert between them step by step, how to handle quotes, commas, semicolons and line breaks, and how…
HEX vs RGB vs HSL: How to Convert Color Codes (With Examples)
What HEX, RGB and HSL color codes mean, how to convert between them by hand or instantly, and which format to use for websites,…
JWT Decoder Guide: What Is a JSON Web Token and How to Decode It Safely
Understand the three parts of a JSON Web Token, the common claims like exp and iat, and how to decode a JWT safely —…
JSON Formatter Guide: How to Format and Validate JSON (With Examples)
What JSON is, the most common syntax errors, and how to format, validate and encode JSON data quickly with free developer tools.