Zero-Width Space Steganography, encodes/decodes hidden messages as non printable/readable characters.

PromptShield sanitizer that applies safe, deterministic fixes to text based on detected prompt-injection threats such as invisible characters, markdown smuggling, and BOM artifacts.

Convert Khmer text between legacy font encodings (Limon, ABC, Baidok, ...) and Khmer Unicode.

Rapidly down-converts AsciiDoc to Markdown. Often used to prepare an AsciiDoc README for npm packaging.

An asciidoctor.js treeprocessor extension that injects zero-width spaces into inline monospace content with punctuation, to give renderers opportunities to create line breaks.

ZWT (Zero Width Text) encoder and decoder

日本語(CJK)のタイトルを自然な位置で折り返す。@vercel/og や Satori に1行で寄生する wrap ユーティリティ＋フォント自動サブセットOGP生成。

Sanitize text crossing the LLM trust boundary: Unicode prompt-injection defense, NFKC normalization, credential redaction, reasoning-tag stripping. Stream-aware, zero deps, ESM-first.

Renderer-agnostic wrappable text following the Unicode Line Breaking Algorithm

MCP server: fast unicode/whitespace/encoding cleanup before LLM input. NFKC, zero-width strip, control strip, smart-punctuation conversion, emoji strip. Built for Claude Desktop, Cursor, Cline, Windsurf, and Zed.

CLI tool that diffs what humans see vs what AI agents process

AI safety & input validation for LLM applications. Protect against prompt injection, jailbreaks, PII leaks, and credential exposure with 225+ detection patterns.

Zero-width character steganography library for JavaScript and TypeScript.

Embed hidden UTF-8 strings inside any text using invisible Unicode characters. Two codecs: variation-selector (Invisible) and zero-width 2-bit packed (ZeroWidth).

Encodes and decodes bytes to a zero width space string.