Hello BlueSky23,
Thanks for your feedback.
Our latest version
Free Spire.Office for .NET (HotFix) Version:7.7.1 also has this update. However our FreeSpire.Office has page limitation for the Word, Excel, PowerPoint and PDF documents. For PDF files, PDF free version is limited to 10 pages of PDF. This limitation is enforced during loading and creating files. When converting PDF to Excel, only the first 3 pages of PDF files will be converted to Image format successfully. If your document exceeds the limitation, you can upgrade to use our commercial version (Spire.Office Platinum(Hotfix) Version:7.9.0). We are willing to provide a temporary license (one month free) of Spire.Office for .NET to help you remove the warning message and evaluate our commercial version better. If you need it, please feel free to write back.
Sincerely,
Simple
E-iceblue support team