StegCloak is a JavaScript-based steganography module that conceals secret information within text using invisible Unicode characters. The tool compresses and encrypts secrets before embedding them into cover text using zero-width Unicode characters that remain invisible across various platforms including social media, messaging applications, and web pages. Key capabilities include: - Password protection and HMAC integrity verification for hidden secrets - AES-256-CTR encryption for cryptographic security - Support for 6 invisible Unicode characters that function across web platforms - LZ and Huffman compression algorithms to minimize payload size - Zero-width character implementation instead of whitespace manipulation - File hiding functionality through cloud upload integration - Cross-platform compatibility with social media and messaging services The module operates in functional programming style and can process large text files rapidly, making it suitable for covert communication, watermarking, and invisible script embedding on web pages.