The purpose of this module is to provide a directive that serves a 1x1 transparent GIF image from the memory. Such files are sometimes used by web designers to tweak the appearance of their website. With this directive, you get an empty GIF straight from the memory, instead of reading and processing an actual GIF file from the storage space.

To utilize this feature, simply insert the empty_gif directive in the location of your choice:

location = /empty.gif { 
    empty_gif; 
}