Eleven tools, one window
Each tool has its own page: what it reads, what it writes, how it is used and where it stops.
Assemble and split
Make one document out of several, or the other way round. Nothing is rasterized: text stays text.
Convert and shrink
Change the format, or cut the weight. This is where HEIC photos and oversized scans go.
Stamp and extract
Add something over the pages, or pull out what they already hold.