Available in pre-release 3.7

In application #

To delete pages from a PDF in SumatraPDF:
Or:
  • open PDF document
  • right-click for context menu
  • Document > Delete Pages From PDF

From command-line #

To delete a page from a PDF using SumatraPDF:
SumatraPDF clean input.pdf output.pdf 1-3,5-N
This deletes page 4 from input.pdf and creates output.pdf
You can delete any number of pages by providing the range of pages to retain.
N is special character meaning: “last page”.
For all options see SumatraPDF clean.