Dear Kanishka,
Thanks for your inquiry and sorry for late reply as weekend.
Please kindly note that free version will never expire. The free Spire.PDF has a general limitation to 10 pages when loading and creating a pdf and a limitation to 3 pages when converting to image. As for the functionality of converting html to pdf, an exception will be thrown once the html is more than 10 pages.
If the free version which has the limitation cannot meet your needs, please use our
Commercial Edition of Spire.PDF. You can contact our sales team(
sales@e-iceblue.com) to get a temporary license file for one month to remove the warning message and have a better evaluation on our products.
If you still have question, please let me know.
Sincerely,
Betsy
E-iceblue support team