Side by Side fills the window with two documents, one in each half, so you can read them together.
Steps
- In the rail, choose Review, then Compare… (Compare documents…). It is also in Home, Display group. Or right-click the tab of a document and choose Open side by side.
- The file written more recently is on the right, and the other on the left. In each half, use the list at the top to choose any open document, including one with changes you have not saved yet.
- To bring in a file that is not open, choose Open another PDF… in that half. It opens in a new tab as well.
- Each half scrolls through its whole document on its own. Use Zoom out and Zoom in beside the percentage to zoom one half.
- Choose Compare to find the differences. See "Find the differences between two documents".
- Choose Close or press Esc to go back to the document you were reading.
Good to know
- Nothing in Side by Side changes either document.
- The ribbon, the panels and the status bar are hidden while Side by Side is open, and come back as they were when you close it.
- To see two pages of the same document, use split view instead. See "See two pages of a document at once".
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