Contains bitmap images at multiple resolutions and bitdepths with alpha channel. Formats of files used for bibliographic information citation management.

Some filenames are given extensions longer than three characters. Password files sometimes called keychain files contain lists of other passwords, usually encrypted. Retrieved 5 May

Contains small bitmap images at multiple resolutions and bitdepths with 1-bit transparency or alpha channel. Archived from the original on 2 April These are filename extensions and broad types reused frequently with differing formats or no specific format by different programs.