Free Reference Guides
Developer Cheatsheets
Concise, printable syntax references for developers. Bookmark these — you'll come back every week.
REGEX Cheatsheet
A complete, printable regex reference guide.
Anchors
Character Classes
Quantifiers
+4 more
BASE64 Cheatsheet
A concise Base64 reference: encoding table, URL-safe variants, use cases, and code snippets for JavaScript, Python, and Node.
What is Base64?
Standard vs URL-Safe
JavaScript / Browser
+3 more
JWT Cheatsheet
A concise JWT (JSON Web Token) reference guide.
JWT Structure
Registered Claims (Standard)
Common Algorithms
+1 more