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

How to underline text?

Hi, I really want to know if is possible to underline text in Sumatra PDF.

Thanks.

Editing options like underlining are not available.

kjk
is correct that feature is not officially available
however if it is essential if “its possible” and you want to play you could try the SMX hack mentioned in
Hightlighting text (archive.org) HOWEVER smx is not available or necessary in current pre-release as normal underline annotation is now currently working.

Closing this topic as it has changed over the years to

Underline is included with color setting in current 3.4 pre-release

see Default color for Underline annotation [Supported in pre-release 3.4.14185]