Developer
Blog
Practical, no-fluff guides for working developers. Format comparisons, security deep-dives, reference cheatsheets, and style guides — cross-linked with our free in-browser tools.
All posts
12 articles and still growing. Pick a topic — every post links to the matching tool.
JSON vs YAML – When to Use Each Format
Practical comparison with syntax examples, the Norway problem, and clear decision rules for picking between the two.
JSON vs XML – Complete Comparison
File size, parsing speed, data types, readability — a thorough comparison with real code examples and benchmarks.
Base64 Explained
What Base64 really is, when to use it, when to avoid it, and the difference between standard and URL-safe variants.
Understanding JWT
A developer's guide to JSON Web Tokens — anatomy, HS256 vs RS256 signing, and the usual mistakes to avoid.
JavaScript Regex Cheatsheet
Classes, quantifiers, anchors, groups, lookarounds, and the common recipes you reach for day to day.
MD5 vs SHA-256 – Which Hash?
Collision resistance, legitimate uses, password hashing, and when each algorithm is actually safe.
UUID vs NanoID vs ULID
Four flavors of unique ID — v4, v7, NanoID, ULID — compared on collision odds, size, and database indexing.
Markdown Guide
Complete CommonMark + GFM syntax reference with gotchas: tables, hard line breaks, nested lists, and more.
URL Encoding Explained
The three JavaScript encode modes, RFC 3986 rules, and how double-encoding breaks production URLs.
chmod Explained
Octal notation, special bits, umask, chown — the full picture of Unix file permissions.
SQL Formatting Guide
A pragmatic style guide for writing SQL that reads well in code review and 3 AM incident response.
HTML Entities & XSS
How entity encoding prevents XSS, when it isn't enough, and how to escape by context: HTML, attribute, URL, JavaScript.