The UtilityApps Blog
Deep dives, calculators, and practical tutorials for the tools you actually use. Free, no signup, written by people who use them daily.
DEV-MID · rectangleBase64 encoding explained in plain English — what it is, why it makes data larger, and the real-world cases where developers actually use it.
How to format and minify JSON — when to use each, common JSON errors and how to fix them, validation tips, and a free in-browser JSON formatter.
A clear explanation of JSON Web Tokens — the three parts, how signatures work, what decoding does and does not prove, and how to inspect a token safely.
A developer's guide to UUID versions — how v1, v4 and v7 differ, why v7 is the modern default for database keys, and when each one is the right choice.