About yhstky

yhstky is a free collection of online tools for everyday tasks — built for people who need an answer in seconds, not a signup form.

What you’ll find here

Twelve focused tools across four categories:

Text: character counter, word counter, keyword density checker
Code: JSON formatter, UUID generator, password generator, regex tester, URL encoder & decoder
Everyday: QR code generator, barcode generator, meta tag generator
SEO: robots.txt generator with one-click AI crawler blocking

Every tool works the moment the page loads and shows its work — no hidden steps, no watermarks, no limits.

Free, no sign-up. Every tool works instantly.
Private by design. Everything runs in your browser; we don’t store your inputs.
Fast and honest. No dark patterns, no fake “pro” upsells.

Have a tool request or found a bug? Reach us at /contact/.