Zero-Width Text Steganography

Uses zero-width character steganography technology to hide secret information within ordinary text, achieving invisible text encryption and information transmission.

Technical Principles

Zero-width characters are special characters in Unicode standard that are completely invisible in interfaces and occupy no display space, but actually exist in text. Tool uses combination of three zero-width characters to encode information:

• Zero Width Space (U+200B): Represents Morse code character spacing
• Zero Width Non-Joiner (U+200C): Represents Morse code short signal
• Zero Width Joiner (U+200D): Represents Morse code long signal

Through Morse code algorithm, can convert any text to zero-width character sequence, hidden within normal text.

How to Use

Encryption Mode

Embed hidden information between two segments of normal text:

1. Enter "Start Text" (prefix part)
2. Enter "Hidden Text" (content needing encryption)
3. Enter "End Text" (suffix part)
4. Generated result appears on surface as "Start Text + End Text", actually contains hidden zero-width characters
5. Copy result text to send to recipient

Decryption Mode

Extract hidden information from text:

1. Switch to decryption mode
2. Paste text containing zero-width characters
3. Tool automatically detects and decrypts hidden content
4. Decryption results highlight and display extracted secret information

If text doesn't contain zero-width characters, shows "No zero-width characters detected" prompt.

Usage Example

Encryption process:

Start Text: I
Hidden Text: don't
End Text: love you

Output: I‍‌‌​‍‍‍​‍‌​‌‍‍‍‍‌​‍love you

On surface appears as "I love you", but between "I" and "love you" embeds zero-width character sequence representing "don't".

Use Cases

Covert Communication

Pass private information in public messages; outsiders only see surface content.

Text Watermarking

Add invisible copyright or source identification to documents.

Fun Interaction

Create hidden message games requiring special tools to see.

Data Protection

Embed sensitive identification or tracking information in ordinary text.

Technical Limitations

• This is steganography technology, provides concealment not encryption security
• People who know the method can easily decode; not suitable for high security needs
• Information hidden at character encoding level; need to preserve complete characters when copying and pasting

Notes

• Zero-width characters invisible in most applications but actually exist in text
• Some platforms may filter zero-width characters, causing hidden information loss
• When copying and pasting, ensure preserving complete text without format conversion
• Tool runs completely locally in browser, does not upload or store data
• Recommend testing on target platform to confirm zero-width characters can be properly preserved