Developer Tools Blog
Practical guides and tutorials for working with JSON, encoding, authentication, regex and more — written for developers who want clear answers fast.
How to Format JSON Online — A Complete Guide
Learn how to format, beautify and validate JSON — fix common errors, choose the right indentation, and work with API responses efficiently.
Base64 Encoding Explained: When and How to Use It
Understand what Base64 is, why it exists, and when to use it — from embedding images in HTML to encoding API payloads and file attachments.
JWT Tokens Explained: How to Decode and Debug Them
A practical guide to JSON Web Tokens — what the header, payload and signature contain, how algorithms differ, and how to debug common JWT errors.
Regex Cheat Sheet for JavaScript Developers
A complete reference for JavaScript regular expressions — character classes, quantifiers, anchors, flags, capture groups, and common patterns for real-world use.
JSON vs YAML vs XML: Which Format Should You Use?
Compare the three most common data interchange formats — when JSON wins, when YAML is the right choice, and when XML is still necessary.