Blog
Tutorials and guides on developer utilities, encoding, timestamps, and security tools.
Base64 Encoding and Decoding: The Complete Guide
Everything you need to know about Base64 — what it is, when to use it, code examples in every language, and common mistakes to avoid.
Cron Expressions Explained: A Visual Guide with Examples
Learn cron syntax once and for all. The five fields, common patterns, special characters, and cloud scheduler equivalents.
My Bookmarks Bar in 2026: Developer Tools I Actually Use Every Day
The 10 developer tools that survived my bookmarks purge. Fast, privacy-respecting, and actually used daily.
JWT Tokens Explained: How to Decode and Debug Them
A practical guide to understanding JSON Web Tokens — what the three parts are, how to decode them, and security pitfalls to avoid.
Regex Cheat Sheet 2026: The Only Reference You Need
Complete regex reference with character classes, quantifiers, lookaheads, common patterns, and language-specific examples for JavaScript, Python, and Go.
SHA-256 Hashing Explained: What It Is and How to Use It
What SHA-256 is, how it differs from encryption, code examples in JavaScript and Python, command-line usage, and practical use cases from passwords to webhooks.
Unix Epoch Timestamps: Everything You Need to Know
What epoch time is, how to work with it in every language, the seconds vs milliseconds trap, and the Y2038 problem.
Convert Unix Timestamp to Date in JavaScript (And Back)
How to convert between Unix timestamps and JavaScript dates -- seconds vs milliseconds, Intl.DateTimeFormat, timezone handling, and common recipes.
URL Encoding and Decoding: Complete Guide with Examples
Complete guide to URL encoding (percent-encoding) -- encodeURIComponent vs encodeURI, Python urllib, URLSearchParams, character reference table, and common pitfalls.