The UtilityApps Blog
Tools that save time and money — explained
Deep dives, calculators, and practical tutorials for the tools you actually use. Free, no signup, written by people who use them daily.
How to Test Regex Patterns: A Developer's Guide
How to test regex patterns the right way — build them incrementally, cover edge cases, avoid catastrophic backtracking, and debug with a live regex tester.
4 min · Jun 19, 2026Daniel M.Base64 Encoding Explained — With Real Use Cases
Base64 encoding explained in plain English — what it is, why it makes data larger, and the real-world cases where developers actually use it.
4 min · Jun 9, 2026Daniel M.How to Format and Minify JSON: Developer's Quick Guide
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.
4 min · May 29, 2026Daniel M.What Is a JWT and How to Decode One Safely
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.
4 min · May 14, 2026Daniel M.UUID v1 vs v4 vs v7: Which Should You Use?
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.
4 min · May 3, 2026Daniel M.