Opening SIG Files

The SIG file type is primarily associated with Outlook.

SIGFile Extension SIG
File extension: SIG
File type:  signature

What is a SIG file?

SIG files mostly belong to Outlook by Microsoft. SIG files usually contain signatures attached to the end of an email to identify the sender in Outlook email software. The file may contain the sender's name, role, company name, email address, links to social media handles, and phone numbers. Signatures used by OneNote are also saved in SIG files. Checksums and identification data used to authorize user access in programs such as Pretty Good Privacy, Panda, and Creative Cloud are saved as signatures in SIG files. Older versions of Broderbund desktop publishing programs such as PrintMaster, PrintShop, and Creatacard, save forms, signs, and poster designs in SIG files. SIG is also the filename extension of braille drawings created with QuickTac, a program for creating "tactile" content readable by visually impaired persons. Powersim Studio saves simulation data in SIG files. SIMPL, a control system development application uses SIG files to save signal data used by its Test Manager component.

How to open SIG files

You need a suitable software like Outlook to open a SIG file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your SIG file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SIG file directly in the browser:. Just drag the file onto this browser window and drop it.

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Programs that open and convert SIG files:

  1. Outlook by Microsoft
    See the previous paragraphs to learn more about the main application. SIG files are often referred to as Outlook simple text files because this type of file is primarily created or used by this software.
  2. a-squared (anti-malware signature) by Emsi
    a-squared was an anti-malware, anti-trojan, anti-spyware, anti-worm, and anti-dialer solution. By using a signature-based onExecution scanner and behavior-based malware-IDs, a-squared was able to quickly detect and neutralize digital threats on a PC. Its anti-malware signature was stored in a SIG file. This file format is classified as Data.
  3. Creatacard (fax cover sheet, form, sign, or poster) by Broderbund
    Creatacard is a desktop publishing software that is mainly used to create greeting cards. Posters, forms, and signs created with older versions of the program were stored in SIG format. Newer versions of Creatacard do not support SIG format. This file format is classified as Raster Image.
  4. Endpoint Security (signature) by Braodcom
    Endpoint Security (usually called Symantec Endpoint Protection) is a comprehensive antimalware/anti-spyware program. It uses Pretty Good Privacy technology to sign documents and encrypt/decrypt disk partitions or network communications. Signatures used to sign and authenticate documents in Endpoint Security are stored in SIG files. This file format is classified as Encoded. Related links: GnuPP (German site)
  5. IDA (signature) by Ilfak Guilfanov
    IDA (short for Interactive Disassembler) is a cross-platform, programmable disassembler for generating assembly code, analyzing potentially hostile code, and performing vulnerability research. Signatures used to sign and authenticate source code, user data, and other resources in IDA are stored in SIG files. This file format is classified as Developer.
  6. Panda (signature) by Panda
    Panda is a cloud-based antivirus software that provides real-time protection against malware or spyware that may attack a user's device. Signatures used to sign and authenticate communication between Panda clients and servers are saved in SIG files. This file format is classified as Data.
  7. Powersim Studio (simulation) by Powersim
    Powersim Studio is an integrated environment for building and running simulation models. Simulations created with this program are saved in SIG files. This file format is classified as Data.
  8. Print Shop (signs, forms, and faxsheets) by Broderbund
    Print Shop is a cross-platform desktop publishing software with a large library of design templates and clip-arts that can be used to easily create posters, signs, forms, calendars etc. Signs, forms, and fax sheets created with classic versions of Print Shop were saved in SIG files. This file format is classified as Raster Image.
  9. PRISM (data) by Nicolet
    PRISM was a laboratory equipment produced by Nicolet. It used data files saved in SIG format. This file format is classified as Data.
  10. QuickTac (braille image) by Duxbury
    QuickTac is a program that converts graphics and text into a grid of dots that can be printed and read by persons with impaired eyesight. Braille graphics created by QuickTac are stored in SIG files. This file format is classified as Raster Image. Related links: Duxbury DBT: Braille Translation Software
  11. SIMPL (signal data) by Crestron
    SIMPL is an integrated development environment for configuring, programming, testing, and debugging Crestron control system applications. It stores signal data in SIG files. This file format is classified as Data.
  12. SpyBot (signature) by Safer-Networking
    SpyBot is a computer security software that guards user data against malware and spyware. It features an anti-beacon engine that ensures your data isn't sent to unauthorized third parties. Hashed signatures used by SpyBot are stored in SIG files. This file format is classified as Encoded.
  13. XMLSpy (signature) by Altova
    XMLSpy is a code editor featuring a graphical schema designer that allows developers to easily create, edit, and export JSON, XML, XSLT and related formats. Signatures used by XMLSpy are saved in SIG files. This file format is classified as Data.

SIG format details:

If you know the file format, you can also find out how to open or edit the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. However, different programs can use the same file extension, and file extensions can be assigned incorrectly. When there is a problem with a file, the first step to solving it is to determine the file format. Below you will find our evaluation of the SIG files:

The SIG extension is very commonly found and is used by different programs with different formats. But the following two file formats are common:

All other SIG files (53%) have no consistent format, such as Adobe Application Manager Package Signature, JFIF, PDF, ZIP, Java, Source, MII, Mozilla, TStamp, EHFA and Ver. Files like these are sometimes linked to windows, installer, client, pakchunk, noeditor or setup. If you want to find out which format your SIG file belongs to, just click on the button "Choose your .sig file to analyze".

Technical Data for SIG File Extension

File classification:
Simple text file
Related files:
p7s, pgp, zip, csig, pdf, tbd, xml, pak, pic, pptx, sign, sgn, zig, sigimg0, exe, esig, asc, sin, xp3, gz, eml, msg

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: American Greetings 8.0

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: American Greetings CreataCard 6.0
EXEFile: agccard.exe

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: American Grettings CreataCard 7.0
EXEFile: agccard.exe

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: Broderbund Premium Print Application
EXEFile: AGCCard.EXE

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: PrintMaster 15.0
EXEFile: pmw.exe

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: ps10

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: PS11
EXEFile: PS11.exe

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: The Print Shop 12.0
EXEFile: lem.exe

ProgramID: PMWPosterType, FileType: Broderbund Poster Type, AppName: The Print Shop 15.0

ProgramID: PMWPosterType, FileType: PMW Poster Type, AppName: PrintMaster Gold

ProgramID: PGP Detached Signature File
EXEFile: %ProgramFiles%\Network Associates\PGPNT\PGPtools.exe %1

ProgramID: PGP Detached Signature File
EXEFile: %ProgramFiles%\SECURITY\PGP\PGP Corporation\PGP802eng\PGPMail.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\AGCREA~1\agccard.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\BUSINE~1\bcc.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\PRINTM~1\pmw.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\MINDSC~1\PRINTM~1\PMW.EXE %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\The Print Shop 20\tps.exe %1

ProgramID: PMWPosterType
EXEFile: D:\BRODER~1\AGCREA~1\agccard.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\PROFES~1\pppbl.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\HPSelect\PS12\THEPRI~1\ps.exe %1

ProgramID: PMWPosterType
EXEFile: C:\pmw\PMW.EXE %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\THEPRI~1\ps.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~2\AGCREA~1\agccard.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\THEPRI~1\ps10.exe %1

ProgramID: PGP Detached Signature File
EXEFile: %ProgramFiles%\PGP Corporation\PGP for Windows XP\PGPMail.exe %1

ProgramID: XecureWebFileVerify
EXEFile: rundll32.exe %ProgramFiles%\SOFTFO~1\XECURE~1\ActiveX\XWEBFI~1.DLL,SFXW_FileVerify %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\CALEND~1.0DE\AGB\agb.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\HPSelect\ps12\PRINTM~1\Pmw.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\THEPRI~3\pspw.exe %1

ProgramID: GPG Detached Signature
EXEFile: %ProgramFiles%\GnuPT\WPT\WinPT.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\THEPRI~1\PS11.exe %1

ProgramID: Sigsation Signature
EXEFile: %ProgramFiles%\Sigsation\Sigsation.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\PrintMaster 16\pm.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\PRINTM~1\pmwe.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\The Print Shop 21\tps.exe %1

ProgramID: OpenPGP.Signature
EXEFile: %ProgramFiles%\Windows Privacy Tools\WinPT\WinPT.exe %1

ProgramID: ACISignature
EXEFile: %ProgramFiles%\ACI32\Applications\siginstaller.exe %1

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\Scrapbook Designer\scrapbook.exe %1

ProgramID: OpenPGP.Signature
EXEFile: %ProgramFiles%\Accessories\Windows Privacy Tools\WinPT\WinPT.exe

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\PRINTM~1\THEPRI~1\PS11.exe

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\CALEND~1\AGB\agb.exe

ProgramID: XecureWebFileVerify
EXEFile: rundll32.exe %ProgramFiles%\SOFTFO~1\XECURE~2\ActiveX\XWEBFI~1.DLL,SFXW_FileVerify

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\THEPRI~1\PSPW.exe

ProgramID: GPGshell.sig
EXEFile: %ProgramFiles%\GPGshell\GPGtools.exe

ProgramID: ConfidFile
EXEFile: %ProgramFiles%\confidence\click.exe

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\PrintMaster Platinum 17\PMW.exe

ProgramID: PMWPosterType
EXEFile: %ProgramFiles%\BRODER~1\PRINTM~1\pgcd.exe


a sig signature is a special file format by Microsoft and should only be edited and saved with the appropriate software.

How to solve problems with SIG files

  • Associate the SIG file extension with the correct application.
  • Update your software that should actually open signatures. Because only the current version supports the latest SIG file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available Outlook update.
  • To make sure that your SIG file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
  • Click here to open your .SIG file online - secure, fast, and no downloads needed.
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