What is the maximum message length?

Depends on image size — approximately 1 bit per pixel, so a 1000×1000 image can hide ~125KB of text.

Optionally — enable AES encryption before embedding for additional security.

Steganography Tool

Hide secret text inside an image using LSB steganography. Also detect and extract hidden messages. The safest way to process

Your files never leave your device. Processed locally. 100% private.

Unlocking Tool Engine...

Complete your task perfectly in just three straightforward steps.

Select Encode to hide a message, or Decode to extract one.

Upload a PNG image and type your secret message.

Download the image with the hidden message embedded.

Everything you need to know about the Steganography Tool.

Is the hidden message visible?

No — LSB steganography changes pixel values by at most 1, which is imperceptible.

What image format should I use?

PNG — JPEG compression destroys the hidden bits.

Is my file uploaded?

No. Everything runs locally in your browser.

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