Migrated from Photography SE.
I received an image on WhatsApp, claiming to be a 'Magic image'. Here it is: (NOTE: Its a JPG) (Find the full size here: https://bit.ly/2WcEZmH)
Below images in clockwise:
- The image as received
- When you click to enlarge the image
- Image information in the gallery (Samsung S10e, Android 9)
- When forwarded
I have a few questions regarding them.
1. How to create them?
I know its a play on transparency
I know its just creatively hiding colors which either show up with white background (when seen as a msg in the chat window), or black background (when clicked to open)
So I create a file with transparency, one which shows different things on white and black backgrounds
But it doesn't work, whatsapp isn't necessarily showing the transparency.
I tried uploading from phone as well as desktop, still no luck.
2. The one I received happened to be a JPG file, how is that possible?
I dont think its entirely using just the transparency hack. There is probably something else I haven't thought of.
Here is what I tried so far
In the below image, the sky is semi transparent. The text BOO! is opaque, and the color of the text is set same as the color of the sky with white background.
This is the image I created: (https://bit.ly/2KrZp92)
See below for how this would look with white and black backgrounds.
This is what whatsapp does, when sent on phone
Doesn't change color or anything
Any leads welcome!