As a test,I download a Feature Comparison Chart from tracker-software.com. Open it separately with Adobe Reader and PDF XChange Viewer. I am in China, so it's UTC+8. Adobe Reader's file porperty shows created:2009/11/17 9:38:42 and modified:2009/11/18 15:18:48. PDF XChange Viewer's file info shows created:2009/11/18 1:38:42 and modified:2009/11/18 21:18:48. Then I open Additional Metadata looking for its matadata structure.Below http://ns.adobe.com/xap/1.0/ ,it shows:
Code: Select all
xap:CreateDate:2009-11-17T09:38:42-08:00
xap:CreatorTool:PDF-XChange Office Addin
xap:ModifyDate:2009-11-18T15:18:48+02:00
xap:MetadataDate:2009-11-18T15:18:48+02:00
xap:Author:John
xap:Format:application/pdfSo I edit the same PDF file, then open it with Adobe Reader and PDF XChange Viewer. Adobe Reader's file porperty shows created:2009/11/17 9:38:42 and modified:2010/3/26 16:56:59. PDF XChange Viewer's file info shows created:2009/11/18 1:38:42 and modified:2010/3/27 0:56:59.Below http://ns.adobe.com/xap/1.0/, it shows:
Code: Select all
xap:CreateDate:2009-11-17T09:38:42-08:00
xap:CreatorTool:PDF-XChange Office Addin
xap:MetadataDate:2009-11-18T15:18:48+02:00
xap:ModifyDate:2010-03-26T16:56:59Z
xap:Author:John
xap:Format:application/pdf