After the free version, iText now goes to commercial and I don’t find any test with Khmer Unicode with it yet as well.
So iText is not support Khmer Unicode rendering.
See old post about related issue
They are from the same user: leejava asking and still do not have any solution beside comment from iText user for Khmer community to implement it directly in iText code library itself.
Can we have a way to make iText work with Khmer Unicode?
Or do you have any alternative solution for Khmer Unicode with Pdf writer?
Let’s make this an open room for people to share their idea and technique.