For business customers, we offer a free trial version of Diff GT. Just fill out and submit the contact form below. Or send us a brief e-mail to .

The trial version has the full functionality of Diff GT and is provided via download.

  • See for yourself what advantages ChkBarcode offers you for your documents.
  • Try out how easy it is to compare your CAD drawings with Diff GT.
  • Test Diff GT with your own technical drawings.
  • Get started with Diff GT's powerful PDF comparison for graphics & text.
Diff GT: PDF comparison for circuit layouts and technical drawings

Diff GT – The specialist for PDF comparison of circuit layouts and technical drawings.

Contact form

Name and contact information

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Free and without obligation. No costs after the end of the trial period. No subscription. Trial period starts after entering the license key. No spam mails. No address transfer or third party use. EULA

Questions & Answers

What happens at the end of the trial period?

The trial version is free and without obligation. That is, at the end of the trial period, the following happens: the software stops to function, nothing else. No automatic conversion to a paid full version or subscription. You do not need to cancel the trial version.

You would like to continue using the software after the test phase? Then contact us so that we can make you an offer for a full version according to your requirements.

What are the system requirements for the software?

To operate the Diff GT trial version you will need:

  • A PC with Windows 64-bit (e.g. Windows 11, Windows 10, Windows 8, Windows 7, Windows 2008 Server oder Windows XP)
  • Or a Mac with Apple Silicon or Intel processor and macOS Version 10.14 or newer
  • At least 4 GB RAM (recommended 8 GB RAM)
  • Internet connection (HTTP and HTTPS)
When does the trial period start?

The trial period starts when you run the program for the first time and enter your licence key.

Will my documents be transferred over the internet?

No! The software works completely locally on your machine. Your documents will never be transferred over the internet.