LSB Image Steganography
LSB隐写图片隐藏文字数字水印信息隐藏
Upload an image to see its capacity, embed secret text into pixel least significant bits and download a visually identical lossless PNG, for information hiding and watermarks, fully local.
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How to Use
- Upload a carrier image and enter hidden text
- Run Embed or Extract to perform steganography
- Download the resulting image or extracted text
- All encoding/decoding runs locally; sensitive content never leaves your device
Related Tools
FAQ
Can anyone see the difference?
No. Only the lowest bit of each channel changes, keeping the image visually identical; extraction requires a dedicated tool.
How much text can one image hold?
Roughly width × height × 3 ÷ 8 bytes minus header overhead; e.g. a 1000×1000 image holds about 370k characters. Exact capacity shows after upload.
What format should I save the stego image as?
Always use lossless formats like PNG; JPEG's lossy compression destroys the hidden data.