Dear Adrien,
Thanks for your inquiry and sorry for the late reply as weekend.
Please note that Free Spire.Doc doesn't have any warning message when using the function of Spire.Doc(in other words, the function in Spire.Doc.dll). But if you directly use the functionality of Spire.Pdf.dll(the namespaces under Spire.Pdf) from free Spire.Doc floder, the warning message ("The document was created with Spire.PDF for .NET") will display, since the Spire.Pdf.dll in Free Spire.Doc is not free.
Our independent Free Spire.Doc and Free Spire.PDF can't be used in a same project because of their incompatibility. Yet we have
FreeSpire.Office 3.0.0 which you could use the function of Free Spire.Doc and Free Spire.PDF together and there is no warning message. You also could download it via NuGet.
Besides, we have no plan to update our free version. The new features and fixes will only be included in commercial version. To help you evaluate our product, our sales team(
[email protected]) has sent you a one-month free license of
Spire.Office 3.12.3 via email. Please refer to the following guide to apply the license.
How to Apply the License by license key.Any question, welcome to write back.
Sincerely
Anna
E-iceblue support team