Reference Guides
Quick-reference tables and cheat sheets for developers, designers, and power users.
Developer
ASCII Table
Full ASCII table with decimal, hexadecimal, octal, and character columns. Includes control characters (0-31), printable characters (32-126), and DEL (127).
HTTP Status Codes
Complete list of HTTP status codes organized by class (1xx-5xx). Each code includes its meaning, common use cases, and when you might encounter it.
Regular Expression Cheatsheet
Comprehensive regex cheatsheet with syntax, character classes, quantifiers, anchors, groups, lookahead/lookbehind, and common patterns.
Date Format Reference
Comprehensive date format reference covering ISO 8601, Unix timestamps, common format patterns across programming languages, and locale-specific formats.
Web
HTML Color Codes
Complete reference of 140+ HTML named colors with HEX codes, RGB values, and visual previews. Includes all CSS named colors.
HTML Entity Reference
Complete HTML entity reference including named entities, numeric codes, and their rendered characters. Essential for web developers.
CSS Named Colors
Complete list of all 148 CSS named colors with color swatches, HEX values, and RGB values. Use these directly in your CSS.
General
Keyboard Shortcuts
Essential keyboard shortcuts for Windows and macOS. Covers general shortcuts, text editing, browser shortcuts, and developer tools.
Unit Conversion Table
Quick reference tables for common unit conversions: length, weight, temperature, volume, area, speed, and data storage.
Unicode Symbols
Copy-paste ready unicode symbols organized by category: arrows, math, currency, punctuation, shapes, checkmarks, stars, and more.