Transform text strings into block letter ASCII art banners for CLI splash screens and source code headers.
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.
Enter your alphanumeric text (e.g. UTILIFI).
Select Code comment (/* */), Box (╔═╗), Hash (#), or plain block text.
Copy the ASCII banner into your README, terminal CLI, or source code.
ASCII banners are popular in terminal CLI tools (splash screens), GitHub README headers, and source code file header docstrings.
All standard A-Z letters, numbers 0-9, and common punctuation marks (!, -, spaces).
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.
