Open links side by side and drag out new tabs in Overlay
When you're reading something in Overlay and want a second page next to it, it used to take a detour: right-click the link, open it in a new tab, then drag that tab from the sidebar to the edge of the pane you were reading. Overlay 2.2 cuts that down.
Right-click a link, open it in split view
Right-click a link and you'll find Open Link in Split View just below Open Link in New Tab. The new page opens to the right of the one you're on, and the original stays on the left, so you never leave what you were reading.
If the current pane is already part of a split, the new page takes a slot right next to it and the other panes stay where they are. It also inherits the current pane's settings. If you're in an isolated session it opens in the same session, so you stay signed in, and the same goes for the proxy and User Agent.
This is only in pages inside the panel. Popup windows that a website opens on its own have no split view, so there you still get Open Link in New Tab.
Drag a new tab out of the + button
The + at the bottom of the sidebar used to be click-only. Now you can press and drag it. A "New Tab" card follows the pointer, and the new tab appears wherever you let go.
Drop it between tabs in the sidebar and it's inserted there. Drop it onto a tab and the two become a group. Drag it to the edge of a pane in the content area and a drop indicator shows up; release and the pane splits, with the new tab on that side. Drop it in the middle of a pane and the new tab takes that pane's place, while the page that was there moves to the end of the sidebar instead of closing.
If the page you want to split isn't on screen, hold the card over its tab in the sidebar for about half a second. The content area switches to it and you can drag straight in. Changed your mind? Press Esc. Nothing is created and the view goes back to whatever you were looking at before you started. Releasing back on the + counts as a click and creates a new tab as usual, and a plain click on + works just as it always did.
What comes out is an ordinary tab. You can reorder it, split it and group it like any other. It also opens the same thing a click on + would, so if you've set a custom home page for new tabs in Settings, that's what you get.
All of this works exactly like dragging a tab you already have, so there's nothing new to learn.
A shorter right-click menu
Right-clicking empty space on a page used to give you more than twenty rows, over half of them settings for the tab. Now the things you reach for are at the top and the settings are tucked away.
First come Back, Forward and Reload. Then Copy Tab URL, Open in Default Browser, Find… and Select All, all of which are about the page you're looking at. Below that is a single row of icons: split view, then Show Address Bar, Isolated Session, Auto Refresh When Shown, Always Open Links in Browser, Disable Notifications and Mute Tab (and a proxy toggle if you've configured a proxy in Settings). Toggles that are on are drawn in the accent color, and hovering an icon shows its name right away. It works from the keyboard as well: arrow down into the row, left and right to move, Return to press.
User Agent, Clear Cookies & Cache and the tab colors now live under More. Close is still at the bottom.
Right-clicking a tab in the sidebar now gives you Back and Forward at the top. They act on the tab you right-clicked, which isn't necessarily the one you're looking at.
In borderless mode (⌘B, which hides the sidebar and address bar), the first item in the page menu is Exit Borderless Mode. The sidebar isn't there in that mode, so every tab feature is reachable from this menu.
The small icons are gone from all menus too, so they're just text now. Items added by web extensions keep their own icons, which is how you tell which extension an item belongs to.
When this isn't the right tool
Split view in Overlay arranges web pages side by side inside its own panel. If you want two different apps sharing the screen half and half, macOS Split View or Stage Manager is the better fit; Overlay doesn't manage other apps' windows.
Overlay isn't a full browser either. There's no bookmarks bar or history page like a browser has, and the right-click menu won't have browser extras like Print or a built-in translator (an extension can add translation). It's for keeping a handful of web tools within reach and calling them up when you need them.
These changes shipped in Overlay 2.2.