Blog
Guides, comparisons and behind-the-scenes notes on building developer tools.
How to Format JSON Online (and Why Indentation Matters)
A practical guide to formatting, validating and exploring JSON in your browser, plus the common mistakes that break a JSON.parse() call.
JSON Formatters, Compared: What Actually Matters
Not all online JSON formatters are built the same way. Here's the checklist worth applying to any of them, including ours.
How to Read a JWT Token (Without Guessing)
A JWT looks like gibberish until you know it's just three base64url chunks separated by dots. Here's how to actually read one, and what each part means.
How to Fix Invalid JSON: Every Common JSON.parse() Error, Explained
"Unexpected token in JSON", "Unexpected end of JSON input" — here's what each JSON.parse() error actually means and the one-line fix for each.
Unix Timestamps Explained (Seconds, Milliseconds, and the 2038 Problem)
What a Unix timestamp actually counts, why some are 10 digits and others are 13, and the real reason some systems care about the year 2038.
Base64 vs. Encryption: Why Encoding Isn't Security
Base64 makes data look scrambled, which fools people into treating it as secure. It isn't. Here's the actual difference, and where each one belongs.
The Regex Cheat Sheet: Every Symbol You Actually Need
Character classes, quantifiers, anchors, groups, and lookaheads, plus the common patterns (email, URL, date) you can copy straight into the Regex Tester.