(Upload a file. Extension and type don't matter. Then click "Submit")
This tool counts the number of times a symbol is found in a file. (Currently, it only looks at byte symbols, i.e. byte values from 0 to 255). The purpose of this is to illustrate how a side effect of most compression algorythms is that one symbol, or group of symbols, is not biased, or found more frequently in a file. Below are some examples:
Declartion of Independance
Notice how you see LOTS of a-z and A-Z and no binary, this is how text files always look.
Declartion of Independance - Zip
Declartion of Independance - GZip
This image as a bitmap
(Notice how the image is mostly black, and so you get LOTS of 0's (almost 600,000 bytes of zero's). 0 is the default byte value for a black pixel in an 8 bit bitmap.
Same image as a png
Same image as a gif
Same image as a jpeg