Explanations and guidance behind the tools on this site.
What entropy actually measures, how length and character sets affect it, and how to pick a password length that resists brute-force.
Answers to common questions about client-side developer tools: data safety, encoding vs encryption, and more.
Block cipher modes explained, and why GCM is the better default over CBC for most new work.
What a UUID is, why it exists, and how versions 1, 4, and 5 differ.
The difference between JSON that fails to parse and JSON that parses fine but violates a schema, and why tooling should treat them separately.
Three common binary-to-text encodings compared on size, alphabet, and where each one actually gets used.
Why a fast general-purpose hash like SHA-256 is the wrong tool for storing passwords, and how bcrypt and Argon2 close that gap.
How symmetric and asymmetric encryption differ, why real systems use both together, and how to pick the right one for a given problem.