Add an option to select current page.
If the pdf have various pages and do select all -> copy selection, when paste, is the first page and not current page.
Edit: I add to complement, share or save only the active page as an image, text or as a pdf.
For image: select this page, copy selection and paste in chosen application or save in file.
For pdf: print/save current page into pdf, send by chosen application, or save in file.
For txt: save or copy text in current page, send by chosen application, or save in file.
Add the improvement of performing the three steps with a command or shortcut.