Blog
Guides and tips — page 3 of 3.
June 9, 2026
A Practical Regex Cheatsheet for Everyday Tasks
The small set of regex building blocks — anchors, character classes, quantifiers, groups, flags — behind almost every pattern you will actually write, with the greedy-vs-lazy trap that causes most bugs.
June 4, 2026
URL Encoding Explained: Why Spaces Become %20
URL encoding (RFC 3986 percent-encoding) replaces unsafe characters with percent-prefixed byte values so reserved characters like ? and & don't break your URL — and most bugs come from picking the wrong encoder.
June 2, 2026
JSON Debugging: How to Format, Validate, and Minify Without Losing Your Mind
A practical walkthrough of the JSON errors developers hit most often — trailing commas, single quotes, unquoted keys — and how to fix them fast.
May 28, 2026
Unix Timestamps Explained: Epoch Time for Developers
A Unix timestamp counts seconds since 1970-01-01 00:00:00 UTC — unambiguous, comparable, and everywhere. The catch: some systems count milliseconds, and getting that wrong puts your date millennia off.
May 20, 2026
How JWT Authentication Actually Works (and How to Read One)
A JWT is three Base64URL segments — header, payload, signature — where only the signature is secret. Reading a token proves nothing; only verifying the signature does.
May 12, 2026
What Is Base64? Encoding, Not Encryption, Explained
Base64 is a reversible encoding for shipping binary through text-only channels — not encryption, not compression, and not a hiding mechanism. Here is what it actually does, and where it shows up.