Open papers and switching

Keep several papers open at once — up to eight — and jump between them without going back to the library.

Applies to Mendeley and Zotero editions Windows · Linux · Mac · iPad · Android Partly included in the purchase

Show the open papers

Press Open papers (the button with stacked pages and a count):

  • Mac · iPadin the top bar of the reader, or press ⌘⇧O.
  • Windowsin the top bar, or press Ctrl+Shift+A.
  • Androidin the top bar of the reader. In the library, the same papers are offered to pick up where you left off.

Your open papers appear as cards.

The open papers as cards

Switch between papers

  • Press a card to switch to that paper.
  • Mac⌃Tab / ⌃⇧Tab go to the next and previous paper.
  • WindowsCtrl+Tab / Ctrl+Shift+Tab go to the next and previous paper. With the cards shown, you can also use ← →, Enter to open, Delete to close and Esc to put them away.
  • iPad · AndroidSwipe sideways near the left or right edge of the screen to go to the next or previous paper.
  • iPadAt either end you see "This is the first PDF" or "This is the last PDF" with Back to Library.
  • AndroidMendeley editionAt either end, the open papers appear so you can pick one.
  • AndroidZotero editionAt either end, you go back to the library.

With two panes, a card opens in the active pane. See Two panes.

Open, close and reorder

  • The + card at the end, Open another paper, lets you find a paper and open it.
  • × on a card closes that paper.
  • Drag a card (long-press first on a touch screen) to change the order.
  • WindowsRight-click a card to open it, open it beside the current paper, or close it.
  • Windows · Mac · iPadA card marked Local is a PDF from this device rather than from your Mendeley or Zotero library.

Up to eight papers

Up to eight papers stay open. When you open a ninth, the oldest paper that is not on screen is closed. Its annotations are saved; open it again from the library at any time.

Switching between open papers is free. Opening a paper beside another one is included in the purchase — see Two panes.

Updated September 20, 2026