Firefox is finally catching up to how people actually use the web, baking a proper side‑by‑side view directly into the browser instead of making you juggle windows or spam Alt+Tab. With the new Split View in Firefox 149, you can pin two tabs in a single window and keep both in full view — perfect for comparing products, copying info across pages, or working from a reference without losing your place.

The idea is simple: instead of dragging two separate browser windows next to each other, Split View lives inside one Firefox window and treats each half like its own mini tab area. You can scroll each side independently, click links as usual, and keep the rest of your tabs sitting quietly in the background — no messy desktop rearranging required. It’s the kind of quality‑of‑life feature that makes a browser feel like a real work tool, not just an app you use to open more apps.

Mozilla is rolling Split View out to everyone with Firefox 149, starting March 24, so you just need to update to the latest version to get it. Once you’re on 149, right‑click any tab and hit “Add Split View,” or multi‑select two tabs and choose “Open in Split View” — Firefox then lets you pick which tab goes on the other side and drops them neatly into a two‑pane layout. From there, you can close the split when you’re done and both pages stay open as normal tabs, so nothing gets lost.

Inside Mozilla, people are already using Split View for exactly the stuff most of us struggle with across tabs: trip planning with maps and booking sites, keeping tax forms open while filing online, or reading a PDF on one side while taking notes or drafting an email on the other. That matches the real‑world pain point Split View solves: the web is inherently “multi‑thing,” but browsers have historically been very “one thing at a time.” Now, Firefox leans into that multitasking reality without forcing you into yet another window layout or OS‑level snap grid.

Split View also lands alongside a broader productivity push in Firefox 149, which adds a small redesign, performance upgrades, and even a built‑in VPN/proxy option in select regions, making the browser feel more like an all‑in‑one workspace than just a tab launcher. But Split View is the feature most people will actually feel day‑to‑day: it turns those countless “flip between two tabs every five seconds” workflows into a calmer, more focused side‑by‑side view that just makes sense in 2026.