ExtractImages returns null?

[LGthle]

hello,

I am trying to extractImage from a PDF using Spire.PDF and c# but "ExtractImages()" is returning null as a result.
I got my code from the Guid (see below)... so I am afraid something with my PDF (see attachment) is wrong.. maybe the whole site is recognized as one Image and thus it is not working?

Code: Select all

 
for (int i = 0; i < doc.Pages.Count; i++)
{
      // Get an object of Spire.Pdf.PdfPageBase
      PdfPageBase page = doc.Pages[i];

      // Extract images from Spire.Pdf.PdfPageBase
      Image[] images = page.ExtractImages();
      if (images != null && images.Length > 0)


Thank you and regards
Luis

[sweety1]

Hello,

Thanks for your inquiry.
There is no image in your pdf file. The paintings were painted through the pen.
So the "ExtractImages()" returned null as a result.

Best Regards,
Sweety

E-iceblue support team

[LGthle]

Thanks for your fast answer. Another question just came up:

"Spire.PDF Free version is limited to 10 pages of PDF. This limitation is enforced during loading and creating files.When converting PDF to Image, the first 3 pages of PDF files will be converted to Image format successfully."

I am confused.. first it says 10 Pages are for free... then only 3 pages will be converted?!
(My PDF got 9 pages)

//edit: and is there maybe a student version for spire.PDF?

[sweety1]

Hello,

Thanks for your reply.
There is no contradiction. The 10 pages limitation is happened when loading and creating pdf files.
Only 3 pages will be converted is happened when converting PDF to Image.
There is no student version for spire.PDF.
I recommend you use the commercial version（The latest version is Spire.PDF Pack Version:3.5 ) which has no any limitations. The component will work normally except for an evaluation warning message.

Best Regards,
Sweety
E-iceblue support team