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

Combine PDFs in the future?

Love the product - In the plan is there the ability to combine PDFs - be willing to pay for this type of tool

@cyberhai ,
While Sumatra is strictly a PDF reader only (which is what makes it so light and fast), there are a number free tools available to merge, split, renumber, etc. PDF files so you don’t have to pay for them. I personally use the tools from PdFill. They also have a very reasonably priced editor if you need to do more. Your mileage may vary.
Russ

No need to pay its already possible (but with limitations)

  1. Any viewing program can use a virtual PDF printer that merges/combines files and there are many with powerful features to add coverpages or table of contents etc. but you would need to search for those.

  2. SumatraPDF pre-release can combine separate PDFs with a combined virtual table of contents OR you can save the combined files currently without any table of contents, that’s the rub. (currently either / or)

  3. Modify SumatraPDF settings to send 2 current tabs to an external command line tool such as that suggested by @Russ if that’s within your capabilities I can provide a template cmd file to gather two tabs filenames