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How to Resize or Swap Websites in Firefox Split View

Drag the divider to resize Firefox Split View panes, or choose Reverse Tabs to switch the websites’ positions.
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In Firefox 149 or later, drag the divider between the two Split View panes to change their relative widths. To switch which website is on each side, open the Split View controls and select Reverse Tabs.

Resize two websites in Split View

  1. Locate the vertical divider between the two websites.

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  2. Drag the divider left or right until the panes have the widths you want.

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Mozilla’s instructions do not specify minimum or maximum pane widths, and do not document a keyboard method for resizing.

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Swap the left and right websites

  1. Open the Split View controls using the icon in the address bar, the three-dot icon in the Split View footer, or the tab context menu.

  2. Choose Reverse Tabs. The two websites exchange sides.

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    WirelessFinest Mini Keyboard Bluetooth + 2.4GHz RF 7-Color Backlit
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Set up Split View if you have not already

Split View displays two tabs side by side in one Firefox window. Mozilla documents the feature for Firefox 149 and later.

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Starting with one tab open

  1. Right-click the tab and choose Add Split View.

  2. Choose a second tab, or select the right pane and enter a web address.

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Starting with two tabs open

  1. Select both tabs, right-click, and choose Open in Split View.

Mozilla also documents holding Alt (Option on Mac) while clicking another tab from the active tab to add it to Split View.

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EASYTONE Backlit Mini Wireless Keyboard Touchpad Mouse Combo with Rechargable Li-ion Battery Multi-Media Keys, Handheld Keyboard for Android TV Box, Smart TV, X-Box, PC, Android Windows Linux MacOS
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Separate the panes or restore a Split View

Choose Separate Tabs from the Split View controls to break up the pair while keeping both tabs open. Closing either tab also ends the Split View.

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If Firefox is set to reopen previous windows and tabs, a Split View can be restored with its window. Reopening a closed tab with Ctrl+Shift+T (Command+Shift+T on Mac) does not restore the Split View arrangement.

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Rii Mini 2.4G Bluetooth Keyboard with Backlit and Touchpad for Smart TV,HTPC
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Limits to know

  • Split View supports two tabs at a time; pinned tabs cannot currently be added.

  • Find in Page applies only to the active pane.

For Mozilla’s current instructions and feature details, see Split View in Firefox.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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