Ethernet Frames
Interactive guide to the ethernet frame, field by field: preamble, MAC addresses, EtherType, payload, and FCS.
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Markdown Reference
Comprehensive reference for CommonMark, GitHub Flavored Markdown (GFM), and Obsidian callouts with examples for all features.
Read GuideCSS white-space, word-break and overflow-wrap explained
How CSS white-space, word-break, and overflow-wrap work, and which one to reach for when text wraps badly or overflows its container.
Read GuideHow to Vertically Center Text in CSS Properly
Why text doesn't center properly in buttons and badges. Learn about leading space, font metrics, and how to fix it with text-box-trim and margin-block.
Read GuideBase 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 GuideFont Optimization for the Web
Strategies to load fonts as fast as possible, for fun and for profit
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.
Read GuideThe many ways to deal with overflowing text
An interactive guide demonstrating techniques for handling long words and overflowing text, including truncation with ellipsis, line clamping, wrapping, breaking, hyphenating, and more.
Read GuideAn interactive guide to Flexbox
An interactive flexbox guide and playground to visualize and experiment with various flexbox css properties.
Read GuideHow to deal with time
A comprehensive guide on how to work with local time, instants, dates and timestamps. Understand how time, time zones and offsets work to avoid bugs and mistakes when writing software.
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