.: incoherency.co.uk - hide image :.

On this page you may upload an image to be hidden inside another image by my hideimage program. Note that if you want to be secure, do not use this page. Your image will be sent in clear through the internet to my server. Anyone in between you and me (including me) can see the image. There is also an extremely small chance that my script can get confused and show somebody else your image. This is so unlikely that it's hardly worth mentioning, I'm just saying that if you want secure, don't use this page.

The cover image and secret image parameters are self explanatory. Hidden bits is the number of bits to the byte of the secret image to use. The most significant bits will be chosen. The least significant bits of the cover image will be replaced by these. The XOr parameter specifies whether or not the least significant bits of the resulting image should be XOr'd by the most significant bits.

JPEG
PNG
BMP
TGA
LBM
PCX

The output image will always be a PNG, and will be deleted at 3am, 6am, 9am, midday, 3pm, 6pm, 9pm, or midnight - whichever comes first. The image should only be accessible by your session, and cookies must be enabled in order for you to get the output.

Hide image:

To do the example of the tree and the cat from Wikipedia, download the tree image, select it in the file box, select 2 hidden bits, and ensure that XOr is not checked. Then click 'Go!' and you will be presented with the cat.

Unhide image:

James Stanley - james@incoherency.co.uk - Member of the Toroidal Earth Society
You have a strong appeal for members of the opposite sex.

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Cover image:
Secret image:
Hidden bits:	XOr last bits of pixel by first ones

.: hide image :.