How to Use the Image Steganography (Hide Text in Image)
-
1
Select Mode: "Encode (Hide Message)" or "Decode (Extract Message)".
-
2
Upload a carrier PNG or JPG image file.
-
3
To Encode: Enter your secret text message and click "Hide Secret in Image", then download the resulting PNG.
-
4
To Decode: Upload an encoded steganography PNG image and click "Extract Secret Message".
Practical Example & Use Case
Common Real-World Scenario
Concealing confidential recovery passphrases, watermarks, or secret messages inside ordinary digital photographs without perceptible visual distortion.
Technical Notes & Limitations
Browser Engine Architecture
Encoded images must be saved as lossless PNG. Lossy compression (like JPEG) would scramble the altered pixel bits.
Frequently Asked Questions
Can anyone tell the image contains a secret?
To the naked eye, the image looks completely identical because only the lowest 1-2 bits of pixel color channels are altered.
Are my images uploaded to a server?
Never. Pixel reading and bit manipulation happen 100% client-side via HTML5 Canvas.