File Type 1 Generic IconSignature File
File Format Standard
Usage Referenced by an application; not meant to be opened manually
Popularity ★ ★ ★ ★ ☆  Common

A signature file contains a small block of text that can be appended to the end of an e-mail message. A basic signature includes the sender's name and e-mail address. More advanced signatures may also include phone numbers, a company name, title, and other information.

Since signature files contain plain text, they can be edited with a text editor. However, most e-mail programs allow signature files to be created and edited within the program. Therefore, there is usually no reason to open SIG files manually.

Open With

IconMicrosoft Outlook

Updated June 1, 2009
File Type 2 Generic IconBroderbund Sign File
File Format Proprietary (Broderbund)
Usage Open manually
Popularity ★ ★ ★ ☆ ☆  Average

Image format used for signs and posters created with Broderbund graphics software, such as PrintMaster and The Print Shop; can be opened with the program that created the file and possibly with other Broderbund programs or versions, but compatibility is not guaranteed.

Open With

IconBroderbund The Print Shop

IconBroderbund PrintMaster


IconBroderbund The Print Shop for Mac

IconBroderbund PrintMaster

Updated 2007
Information from the PC File Extensions Reference