When I open the PDF file created with iText2.1.3 in Acrobat 8.1, I got an error
message "Connot extract the embedded font XPWRTT+ArialMT. Some characters may
not display correctly". The same file can be opened without such error in
Acrobat 7.0. I googled this error and found the following explanation. Does
iText cause this problem? if yes, if there any update or plan to update? Thanks
#1572280 Type 3 fonts with missing operators.
PDF documents that contain Type 3 fonts with missing operators are
non-compliant with the PDF specification.
These non-compliant PDF documents are typically generated by third party
products.
When trying to opening the document, users see an error message, "Cannot
extract the embedded font 'F0'.
Some characters may not be displayed or printed correctly." PDF documents open
correctly in Reader/Acrobat 7.x, but not 8.0 or 8.1.
The root cause is Type 3 fonts that do not comply with the PDF specification,
which requires either the 'd0' or 'd1' operator in every Type 3 character
procedure.
In version 7.x, if the offending character was not displayed, the PDF document
opened normally. Version 8.0 catches this error even if the character is not
displayed.
The updated behavior will ignore the missing operator when the character
procedure is empty.
Root: fixes an issue in versions 8.0 and 8.1, not present in earlier versions.
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