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

Hide and recover text using zero-width characters.

A steganography library supporting image and text steganography with LSB embedding, JPEG DCT coefficients, and zero-width character encoding.

A JavaScript/TypeScript implementation of text blind watermarking using zero-width Unicode characters

Is this value negative zero? === will lie to you

MCP server for SkillsSafe — AI agent skill security scanner. Detects prompt injection, credential theft, zero-width character attacks, and ClawHavoc malware. Free, no API key required.

Zero-width character steganography library for JavaScript and TypeScript.

Undo ASCII smuggling: strips and DECODES hidden instructions from Unicode Tags, variation selectors and zero-width binary, plus spotlighting and advisory injection heuristics. Zero dependencies. Does not claim to prevent prompt injection.

Trace leaked text back to the visitor who copied it. Weaves an invisible zero-width Unicode watermark into text copied from your site.

a library encode/decode text using zero width spaces

Detect and remove invisible Unicode characters: zero-width spaces, bidi controls, variation selectors, tag characters. Knows which ones are safe to strip and which carry meaning.

ZWT (Zero Width Text) encoder and decoder

A little helper for handling strings containing zero width control characters, ANSI styling, whitespaces, newlines, etc.

JavaScript remove ZERO WIDTH SPACE (unicode 8203) from string.

Sanitize images, text documents, and codebases by removing C2PA manifests, EXIF metadata, invisible zero-width unicode watermarks, Bidi control characters, LLM prompt tokens, and steganography signals.

generate a zero-width (*rendered*) hash with popular algorithms such as SHA-256.

Translate strings into invisible, zero-width strings, back and forth.

Encodes and decodes bytes to a zero width space string.

Encode ASCII strings into zero-width unicode characters, and decode back into ASCII

A CLI to insert zero-width spaces into text.