BobLd

> I already found that the Location.EndLine und Location.StartLine for the letters with wrong TextOrientation are at the same point. Thanks for that, that's very usefull. I'll get back to...

@muhmuhhum sounds good, thanks a lot for that. The code that computes the text orientation is here https://github.com/UglyToad/PdfPig/blob/4537ec3f02c9f1f12e17e3a2e03f411c41d027de/src/UglyToad.PdfPig/Content/Letter.cs#L139C1-L162C10 If you want, you can try to fix it, I'll try to...

@sbruyere I think I misunderstood your first comment. Happy for you to do a proof of concept PR (no need to implement the actual filters) to demonstrate your approach, we...

@sbruyere do you still want to do a PoC PR? I might start working on that and ask for your opinion. Let me know

One possible area to look into is https://github.com/UglyToad/PdfPig/blob/c25368e5ab7c3add2bd771d940a31dc2e87f3d34/src/UglyToad.PdfPig/Images/Png/PngFromPdfImageFactory.cs#L31C17-L31C101 the `PngBuilder.Create`'s `hasAlphaChannel` value is always `false`. Another possible area to look into are "soft masks":  I doubt I will have...

@tcm151 okay, thanks for checking. Sad it's not an _easy_ fix It must be related to soft mask then... which is more tricky since I don't think it's fully implemented...

@aoweis could you share the document so that we can have look? It will be difficult to understand what is going on without it

@aoweis can you send a screenshot of the text that supposed to not be black? What is the color they are supposed to have by the way? Also maybe can...

@aoweis thanks for the details. Your issue seems to be related to color spaces. A lot of changes were made in the latest version 0.1.8 of PdfPig, can you tell...

@sharokh1 can you confirm your new issue is related to the old one? Maybe it's worth creating a new issue if this one is fixed. Also, can you share a...