.TBN File

The tbn file extension is associated with the XBMC, an award-winning free and open source (GPL) software media player and entertainment hub for digital media.

It looks like .tbn files contain thumbnails of multimedia files stored in the folder.

Files with tbn file extension can be usually encountered as thumbnail cache files from XBMC open source multimedia player.

How to open:

Whenever you view multimedia content in XBMC, it will load up (or generate) thumbnails for preview purposes.

How to convert:

We do not know about any possible conversion for this file type, but perhaps the thumbnails can be converted to other common graphic format.