TU Web Tools Blog - Developer Guides & Tool Tutorials

Two values look identical on screen. The comparison fails anyway. The culprit is almost always a character you cannot...

Free web tools are genuinely useful and occasionally a data breach waiting to happen. The difference comes down to one...

August 15, 2026 · Security & Privacy

Putting every password in one place feels wrong. It is the objection that keeps most people from adopting a password...

Five naming conventions, each dominant somewhere specific. Knowing which belongs where is one of the quiet signals that...

Sixty characters for a title, one hundred and sixty for a description. Both numbers are useful, and both are wrong in...

Internal links, mixed content and outbound references all drift over time. You can audit all three from a page's source...

All second factors are better than none, but they are not equivalent. SMS is the weakest by a wide margin, and the...

UUIDs solve real problems that auto-increment integers cannot. They also create a performance problem in MySQL that...

Nothing on the page looks broken. Then someone shares it on WhatsApp and it appears as a bare URL with no image, no...

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