Skip to end of metadata
Go to start of metadata
Contents Summary

You can use GroupDocs.Comparison without the license. The usage and functionalities are pretty much same as the licensed one but you will face few limitations while using the non-licensed API.

Evaluation Limits

  1. Only up to 3 first pages are processed.
  2. PDF documents: document should not have more then four elements of any collection
  3. Documents with more than 3 pages are not supported.
  4. Only 15 document Comparison per hour.
  5. Trial badges are placed in the document on the top of each page.


The license file contains details such as the product name, number of developers it is licensed to, subscription expiry date and so on. It contains digital signature, so don't modify the file. Even inadvertent addition of an extra line break into the file will invalidate it. You need to set a license before utilizing GroupDocs.Comparison API if you want to avoid its evaluation limitations. License can be applied using file path and stream.

Apply License Using License File Path

Code given below justifies how to apply license using file path.

Apply License Using License File Stream

Code given below explains how to apply license using stream.

Metered Licensing

You can also set Metered license as an alternative to license file. It is a new licensing mechanism that will be used along with existing licensing method. It is useful if you want to be billed based on the usage of the API features. For more details, please refer to Metered Licensing FAQ section.

Create metered object and use method SetMeteredKey()

To check current consumption quantity use getConsumptionQuantity() method

Validate the License

You can validate if the license has been set properly or not. The License class has isValidLicense() method that will return true if license has been properly set.

  • No labels