Cheat Sheets

Quick-reference guides for developer syntax, formats, and protocols. Bookmark, share, and use them alongside the tools.

5 cheat sheets

Cron Expressions

Quick reference for cron expression syntax: fields, special characters, common schedules, and platform differences (Linux, GitHub Actions, AWS, Quartz).

Git Commands

Quick-reference guide to the most common Git commands — configuration, branching, merging, remote operations, undoing changes, stashing, and inspection.

CSS Selectors

Complete CSS selectors reference: basic selectors, combinators, attribute selectors, pseudo-classes, pseudo-elements, modern selectors (:is, :where, :has), and specificity.

HTML

Complete HTML reference: document structure, text tags, links, media, lists, tables, forms, inputs, and semantic HTML5 elements.

Flexbox

CSS Flexbox layout reference: container properties, item properties, alignment values, common patterns, and the flex shorthand.