Developer Reference Hub
Bookmarkable cheatsheets for the modern web developer. No fluff, just the data you need.
Complete MIME Types List
The ultimate developer reference for Multipurpose Internet Mail Extensions (MIME types). Essential for configuring web servers and handling file uploads.
HTTP Status Codes Cheatsheet
A complete list of HTTP status codes, their meanings, and troubleshooting tips. Perfect for debugging API responses and server errors.
Git Cheat Sheet
Essential Git commands for version control. From basic commits to advanced rebasing and branching strategies.
Linux Permissions
Visual guide to chmod numbers (777, 644) and permission symbols.
Common Ports Cheat Sheet
List of standard TCP/UDP ports for web, email, databases, and infrastructure.
Docker CLI Cheat Sheet
Quick reference for Docker containers, images, volumes, and networks.
Cron Expression Syntax
Master the art of scheduling tasks. Cron syntax, special characters, and common examples.
Vim Commands
Escape the editor! Essential Vim commands for navigation, editing, and saving.
HTML Entities List
Reference for special characters, symbols, and currency codes in HTML.
CSS Flexbox Guide
Properties for the Flexible Box Layout Module. Align, justify, and wrap like a pro.
WAI-ARIA Roles & Attributes
Make your web apps accessible. List of landmark roles, widget roles, and aria-attributes.
JavaScript Key Codes
Event key codes and values for keyboard event handling.
CSS Cursor Values
Visual list of all available CSS cursor property values.
SQL Common Commands
Standard SQL syntax for querying, manipulating, and defining data.
Common Regex Patterns
Useful regular expressions for validation (email, phone, dates) and text processing.
JWT Structure & Claims
Anatomy of a JSON Web Token. Header, Payload, Signature, and standard claims.
URL Encoding Reference
Percent-encoding values for common special characters used in URLs.
ASCII Control Codes
Reference for non-printable ASCII control characters (0-31) like NULL, BELL, LF.
UUID Version Guide
Differences between UUID v1, v4, v5 and when to use which.
Semantic Versioning
MAJOR.MINOR.PATCH - Rules for versioning software dependencies.
OWASP Top 10 (2025)
The most critical security risks to web applications.