Some PDF files may not be fully compliant with PDF
specification. In short they may be corrupt.
ABCpdf will work around minor forms of corruption in which the
intent is obvious. However some more major forms of corruption
require that the entire document is read and rebuilt. This will
only occur if the ExtraChecks property is set to true.
Rebuilding a document is not ideal. Not only is it time
consuming, but there may also be more than one way of performing
the rebuild. Depending on the strategy used one may end up with two
different results. Most often the results will, for all practical
purposes, be identical. However on rare occasions they might be
different. For this reason the default value of this property is
Many clients who need to process large quantities of PDF
documents, from sources of varying quality, end up writing code of
the following form.
XReadOptions xr = new XReadOptions();
xr.ExtraChecks = true;
Dim xr As New XReadOptions()
xr.ExtraChecks = True