Zero-Width Steganography Tool
Appends a U+200B marker, then encodes UTF-8 bits as U+200C for 0 and U+200D for 1; decode mode reads the last marker and reconstructs text.
About this zero-width steganography tool
Appends a U+200B marker, then encodes UTF-8 bits as U+200C for 0 and U+200D for 1; decode mode reads the last marker and reconstructs text Applies Unicode-compliant text transformations and parsing directly in the browser tab without data leakage.
Text processing & transformation mechanics
Appends a zero-width-space marker and encodes UTF-8 bits as zero-width non-joiner for zero and zero-width joiner for one. The visible input and encoded payload are the same text; encryption and integrity checks are not provided.
Worked text manipulation example
Scenario: Encode the entered text itself into a zero-width carrier.
Sample input:
Processing: Append one U+200B marker, then encode the UTF-8 byte 0x41 with U+200C for zero and U+200D for one.
Illustrative output:
Character encoding & string length boundaries
This hides content visually but provides no encryption. Editing or normalization may destroy bits; decoder rejects malformed UTF-8 and payload length.
Text formatting and transformations in Zero-Width Steganography Tool preserve character integrity. Check edge cases such as multi-line inputs and special characters before downstream use.
In-memory text processing boundary
String operations and Unicode manipulations in Zero-Width Steganography Tool execute entirely in local browser memory without transmitting input text.
Unicode Consortium & text formatting standards
Unicode Consortium standard annexes (UAX) and character encoding specifications:
- Unicode General Punctuation: U+200B ZERO WIDTH SPACE, U+200C ZERO WIDTH NON-JOINER and U+200D ZERO WIDTH JOINER.
- WHATWG Encoding Standard: TextEncoder UTF-8 bytes and fatal TextDecoder UTF-8 decoding. The bit-to-character mapping is a CZOA-specific format, not a standardized encryption or steganography protocol.
Zero-Width Steganography Tool verification · Audit standards
How to use it
- Paste text to encode. To decode, paste carrier text with its U+200B marker and type `decode` in the second input.
- Click Run locally. It writes or reads U+200C/U+200D payload bits after the last marker.
- Read and copy the encoded carrier or reconstructed text.
Frequently asked questions
How does Zero-Width Steganography encode text?+
It uses the same main input as both visible text and hidden payload: it UTF-8 encodes that input, appends one U+200B marker, and writes each bit as U+200C for 0 or U+200D for 1. There is no separate cover-text or secret field.
What does decode mode read?+
When the second input contains `decode` or `extract`, it finds the final U+200B marker, converts the following U+200C/U+200D sequence into bytes, and strictly UTF-8 decodes them. A missing marker, non-bit character, incomplete byte, or invalid UTF-8 is an error.
Does this encrypt or authenticate hidden text?+
No. It is reversible Unicode encoding, not encryption, signing, authentication, or access control. Anyone who keeps the invisible characters can extract the appended payload.
Can I try a concrete input?+
Enter `A` in the main text area, type `encode` in the second text area, then choose Run locally. The output is visible `A`, followed by one U+200B marker and eight zero-width bit characters; it has ten Unicode code points in total.