Long-form, original writing from the G4GAME engineering team on the topics behind our tools: how JSON breaks, what a JWT really contains, what makes a password strong, and which UUID version belongs in your database. No fluff, no reprints.
Most 'free online formatter' sites post your data to a backend. This guide explains the real exposure that creates, and shows you how to verify — in about thirty seconds — whether a tool actually runs in your browser.
Read guide →Ninety percent of JSON problems come from six recurring mistakes. Here they are, with the exact parser messages they produce and the fastest way to locate each one.
Read guide →A JWT is signed, not encrypted. Anyone holding it can read every claim inside. This guide covers the anatomy, the claims worth checking, and the mistakes that turn a token into an incident.
Read guide →The classic advice — one uppercase, one digit, one symbol — optimises for the wrong thing. What actually defeats an attacker is unpredictability, and the cheapest source of unpredictability is length.
Read guide →Most teams reach for UUID v4 by reflex. That is usually fine, occasionally a performance mistake, and sometimes the wrong tool — here is how to tell which case you are in.
Read guide →Most developers wrap JSON.parse in a try-catch and stop there. That answers whether the document parses, but nothing about whether it matches your contract — here are five levels of strictness and when each is the right one.
Read guide →Base64 shows up in JWTs, data URIs, email attachments and auth headers — and is routinely mistaken for a security measure. Here is what it actually is, and a decision framework for when to reach for it.
Read guide →Status codes are the contract between your API and every client, proxy, cache and monitoring tool that touches it. Choosing them carelessly makes debugging harder for everyone downstream.
Read guide →Generating a secret is three lines of code, and almost every way of getting it wrong looks identical to getting it right. Here is the correct approach and the failure modes to avoid.
Read guide →Formatting is not cosmetic in SQL. A badly laid out query hides accidental cartesian products and misplaced filters — a well laid out one shows them at a glance.
Read guide →