Note You can use GroupDocs.Parser 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 Limitations You can easily download GroupDocs.Parser for evaluation. The evaluation download is the same as the purchased download. The evaluation version simply becomes licensed when you add a few lines of code to apply the license. You will face following limitations while using the API without the license: API Limit Only 100 files per session Only 5 pages (slides, Sheets) of a document Text extraction Only 20 lines per fileOnly the first 1600 symbols Only the first 5 pages (slides, Sheets)+ Evaluation marks Formatted text and text structure extraction Only 20 rows for spreadSheetsOnly the first 1600 symbolsOnly the first 5 pages (slides, Sheets)+ Evaluation marks Metadata extraction Only 5 properties per file Licensing The license file contains details such as the product name, number of developers it is licensed to, subscription expiry date and so on....session Only 5 pages (slides, sheets) of a document Text extraction...the first 5 pages (slides, sheets) + Evaluation marks Formatted...