Developer reference
Dense, accurate lookup tables for things developers check often. Each one links to the tool that puts it to work.
Regex Flags Reference
Every JavaScript regular-expression flag (g, i, m, s, u, y, d, v), what it does, and an example. A quick reference for regex modifiers.
UUID Versions Reference
Compare UUID versions: v1, v3, v4, v5, v6, v7. How each is generated, whether it is time-ordered, and when to use it.
Hash Algorithm Comparison
Compare common hash algorithms: output size, collision resistance, and recommended use. MD5, SHA-1, SHA-256, SHA-384, SHA-512.
Cron Syntax Reference
Cron expression fields and special characters explained, with common schedule examples like every 5 minutes and every day at midnight.
Base64 Alphabet Reference
The Base64 alphabet (index to character), how padding works, and the difference between standard and URL-safe Base64.