Technical Requirements / Compatibility

Electronic Signature Software Compatibility
The 'Sign This Contract' (STC) application is a simple and elegant cloud-based electronic signature software package that doesn't require you to download any software. It's completely browser-based and is compatible with all the current major browsers and operating systems. Our software does not utilize Flash, Java or any downloadable executables.

See the table below for more compatibility and technical details.
Operating Systems
  • MacOS X v10.4.11 and above (Tiger, Leopard, Snow Leopard, Lion, Mountain Lion, Mavericks, and Yosemite)
  • iPhone/iPad iOS 4.0+
  • Android 2.0+
  • Windows 10 (Pro or Std)
  • Windows 8 (Pro or Std)
  • Windows 7 (Pro or Std)
Web Browsers
  • Google Chrome (recommended), version 12 and higher
  • Microsoft Internet Explorer, version 9.0 and higher
  • Microsoft Edge (new browser in Windows 10)
  • Mozilla Firefox, version 3.0 and higher
  • Safari, version 4.1.3 and higher
  • Opera, version 8.0 and higher
  • Other browser types and versions may work, but have not been specifically tested with the STC e-signature software platform.
PDF Viewers
  • Adobe Acrobat version 9.1 or higher.
  • Adobe Reader version 9.1 or higher.
  • There are also many 3rd party PDF viewers that should work fine with the STC service as well.
Email/Internet Access
  • An email address and access to the Internet is required to use the STC service.
Contract Creation
  • You may use any type of software you perfer to create the contracts or forms but when uploading to the STC site, you will need to upload in either Microsoft Word or Adobe PDF format.
Contract Download from STC
  • Documents eSigned on the STC site will be emailed to you and/or downloadable in Adobe PDF format.

For more information, please view our Features page as well as our How Does it Work page.