Comparing two pages, following a video while reading notes, or checking a form against a reference document is awkward when you have to keep switching tabs. A split screen extension puts two tabs into one window at once, which saves the repeated alt-tabbing and lets you drag content between the two panes.
How split screen extensions work in Chrome
A split screen extension typically opens a new view with two frames, then lets you load any open tab or a new address into each side. Some sync scrolling between panes for comparing similar pages, while others keep each pane fully independent so you can read one page while filling a form in the other.
View two tabs side by side without resizing windows
Without an extension, side-by-side viewing means manually resizing two separate Chrome windows and lining them up on screen, which breaks apart when you switch tabs. An extension keeps the split inside one window, so switching to another tab and coming back preserves the layout.
When you don't need a split screen extension
On a wide monitor, Chrome's own window snapping, such as dragging a window to the edge of the screen, can put two separate windows side by side without any extension. Reach for a dedicated extension when you want the split to persist as you switch tabs or need more than basic window snapping.