Notes

Published August 29, 2026

Decode JWT headers and payloads, understand expiry claims, and avoid mistaking decoding for verification.

Published August 29, 2026

Understand headers, quoted values, and JSON record shapes when converting CSV data.

Published August 29, 2026

Avoid indentation mistakes, ambiguous values, and malformed YAML with a practical validation workflow.

Published August 29, 2026

Learn how to validate XML structure, identify mismatched tags, and make documents readable.

Published July 7, 2026

Understand Unix time, the year-2038 problem, and best practices for storing dates in applications.

Published June 30, 2026

Learn the most useful regex building blocks with practical examples you can test immediately.

Published June 23, 2026

A plain-English comparison of common hash functions, which ones are broken, and what to use instead.

Published June 16, 2026

The real math behind password strength, why length matters more than symbols, and how to generate passwords safely.

Published June 9, 2026

Understand how Base64 encoding works, why it exists, and when it's the right (or wrong) tool for the job.

Published June 2, 2026

A practical guide to JSON syntax rules, the most common validation errors, and how to fix them quickly.