Protect emails and sensitive strings from spam scrapers and crawlers.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Type or paste the email address or phone number you wish to protect.
Select from HTML decimal entities, hex encoding, JS CharCode, or CSS reversal.
Copy and paste the generated markup directly into your website HTML.
Yes, web browsers decode the entities and scripts seamlessly for humans while automated scrapers only see scrambled code.
Zero-egress companion tools in the Text Utilities suite
Calculate US grade level comprehension using the Automated Readability Index (ARI) formula.
Strip accents and normalize European characters into plain ASCII Latin letters.
Encode and decode reversible ROT13 and custom Caesar cipher text strings.
Format scientific Markdown chemical formulas and mathematical exponents.
