Hello,
Thanks for your inquiry.
Can the result Pdf document be opened in window10? In addition, the latest Spire.Pdf is
version 8.10.5, please update to it and have a test. If the issue still exists, to help us reproduce your issue and work out a solution for you, please offer the following message, thanks for your assistance in advance.
1) The html string for conveting to Pdf file.
2) The result Pdf document.
3) Your test environment, such as MacOS 12.5.
4) Application type, such as Console App, .NET Framework 4.8.
Sincerely
Abel
E-iceblue support team