> 
> **Possible Duplicate:**  
> 
> [Does the dpi number reported by camera in JPG have any meaning?](https://photo.stackexchange.com/questions/11182/does-the-dpi-number-reported-by-camera-in-jpg-have-any-meaning) 
> 
> 
> 

I am investigating on the size and resolution of the photographs posted on the Internet. I have visited many sites to analyze this information. I have found a 900X500px resolution image that has ~5400 DPI. How is it possible?