Sumatra PDF is a PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader for Windows

Customizing Highlight Opacity

Hi, is there any way to customize annotation highlight opacity? Editing in SumtraPDF-settings.txt does not seem to work.

Yes add the alpha value, but be cautious not to use too low a value.
40 is about as low as reasonable or it may be difficult to see them.