Markdown Reference
Comprehensive reference for CommonMark, GitHub Flavored Markdown (GFM), and Obsidian callouts with examples for all features.
Read GuideMisc Guides
Base Encoding Guide
A comprehensive guide to base encoding formats including Base64, Base32, Base58, and their use cases.
Read GuideHow UUIDs work
UUID format, versions v1 through v8, and their trade-offs. When to pick v4, v7, or v5.
Read GuideParts of a URL
WHATWG vs RFC 3986 vocabulary, the structure of a URL, and why one component has two specs that disagree on its boundaries.
Read GuideHow Unicode works
How Unicode encodes text. Code points, graphemes, UTF-8 vs UTF-16 vs UTF-32, surrogates, normalization, and string length.
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