Invisible Watermark
Embed hidden text inside your images using LSB steganography. The watermark is completely invisible to the naked eye but can be extracted to prove ownership. Perfect for protecting preview images and tracking leaked content.
Steganographic Watermark
Encode a hidden message into an image, or decode an existing watermarked image to extract the hidden text. All processing happens in your browser.
How It Works
This tool uses LSB (Least Significant Bit) steganography to hide text data in the blue channel of image pixels. The changes are imperceptible — you can not see any difference between the original and watermarked image.
Important: Save the watermarked image as PNG. JPEG compression will destroy the hidden data. The watermark survives screenshots and cropping as long as the top-left corner is preserved.
Use this to embed your handle or a unique ID in preview images you share on social media. If someone steals your content, you can decode the watermark to prove it is yours.
Frequently Asked Questions
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