Detect Text Watermark
Extract hidden messages from text using your secret key. Verify document authenticity and detect zero-width character steganography.
Enter the key that was used when embedding the watermark
Embedded message
No Watermark Detected
No hidden message was found with this key. The text may not be watermarked, or a different secret key was used to embed it.
How Text Watermark Detection Works
Our detection algorithm scans the provided text for zero-width Unicode characters. These characters are often invisible to the naked eye but can contain encoded payloads. By analyzing the sequence of these characters and applying the correct cryptographic key, we can decode the original hidden message.
Common Use Cases
- Investigate Leaks: Find out who leaked a confidential document by pasting the leaked text into our tool.
- Content Verification: Ensure a document hasn't been altered by verifying the integrity of the hidden watermark.
- Steganography Analysis: Check suspicious text to see if it contains hidden zero-width payloads.
Frequently Asked Questions
Do I need the exact text to detect the watermark?
No, you only need the portion of the text that contains the zero-width characters. However, if the text was heavily edited or retyped, the watermark might be destroyed.
Why didn't it find my watermark?
This usually happens for three reasons: (1) The wrong secret key was used. (2) The text was pasted through a system that strips special characters. (3) The text never contained a watermark.
Is the detection process secure?
Yes. Your text is processed securely and is not stored on our servers after the detection process is complete.