ASH PDF Studio Help

Opening files and working with tabs

Open a PDF

  1. Choose File ▸ Open… or press Ctrl+O. In the app: Help ▸ Show me
  2. Select one or more PDF files and click Open. Each file opens in its own tab.

Other ways to open:

Tip

Dropping a PDF on the pages of an open document inserts its pages there instead. A line shows where they go and the hint reads “Insert at page N · drop on the tab bar to open”.

Switch between tabs

Reorder tabs

Drag a tab sideways and drop it in its new place (Esc cancels), or press Ctrl+Shift+Page Up / Page Down to move the current tab left or right.

Close tabs

If a document has unsaved changes you are asked whether to save it, discard the changes or cancel. When you close several tabs at once, Cancel stops the rest from closing.

Copy pages between documents

Drag page thumbnails from the sidebar onto another tab. Hold them over the tab for a moment to switch to it, then drop them on its pages to insert copies there (“Insert copies at page N”), or drop them on the tab itself to add them at the end (“Append N pages to …”).

Encrypted files

An encrypted PDF opens read-only. A banner says This document is encrypted: viewing and printing only (editing is not supported). and the status bar shows Encrypted · read-only. Dropped files open in a new tab instead of being inserted.