Arc Browser Will Shut Down as Its Users Move Toward Dia

The Browser Company will shut down Arc on December 22, 2026 and focus its engineering and security teams on Dia. For people who use Arc every day, the immediate question is practical: what happens to the passwords, tabs and carefully arranged Spaces that make their browser feel like theirs?

The retirement has stages. New Arc accounts can no longer be created. On November 23, sign-ins, tab syncing and AI features such as Browse for Me are scheduled to stop working on Android and iOS. The Mac and Windows versions are scheduled to stop working on December 22, when accounts will be deactivated; account data will be deleted 30 days later, How-To Geek reported. The latest Arc release allows users to export data for a later import into Dia. Those dates give users a reason to plan a move before December rather than treat the shutdown as a notice they can deal with afterward.

The company says passwords, bookmarks, extensions and history will move to Dia. It also says Spaces, folders and tab groups are present in Dia and will import with their data intact. That is a more ambitious promise than transferring a list of saved websites. A bookmark gets you back to a page; a Space can determine which collection of pages you see while working on one task instead of another.

A Shutdown that Began with a Change in Priorities

Arc’s end date arrived well after the decision to stop building it as the company’s main browser. The Browser Company outlined an end-of-life strategy in May 2025 without naming a retirement date. Chief executive Josh Miller said Arc had attracted fewer users than the company hoped and was “simply too different” without offering enough reason to switch. Active development then shifted toward Dia. Arc remained in maintenance mode, receiving security updates and bug fixes, Android Authority reported.

That sequence helps explain the October 2026 announcement. Maintenance mode kept Arc going while the company worked on its successor; the new schedule turns a change in product priorities into a deadline for users. The reported adoption explanation and the current security rationale address different problems. One concerns whether enough people wanted Arc’s approach. The other concerns where the company says it can sustain browser upkeep. Neither requires assuming that Arc’s design failed for the people who adopted it.

Arc gave those users more than a different place to put bookmarks. Its Spaces separated collections of tabs for activities such as work and planning, with users able to swipe between them. It also offered Split View for displaying tabs side by side. A person who relies on those arrangements can recover every saved address yet still face the job of rebuilding how they move through a working day. That is the standard against which Dia’s migration pitch should be judged.

The Browser Company’s case for concentrating on Dia is understandable. A browser needs continuing security work, and maintaining two products draws on the same engineering organization. The company says Dia was built to meet current security standards and that it now exceeds Arc on stability, speed and security benchmarks. Those are company claims, not a published comparison here of how the two browsers perform for users. The strongest reason to retire Arc may be the continuing work required to support it; the strongest reason for a user to hesitate may be the work required to replace it. Both costs can exist at once.

What an Import Can Preserve

The company’s list covers several different kinds of possession. Passwords and history are records. Bookmarks point to places. Spaces, folders and tab groups describe an arrangement. Extensions add behavior. A migration that copies all four categories still leaves a practical question: do they arrive where a user expects them, and do they work as that user expects? The company says the listed items import seamlessly. Whether a given Arc setup remains familiar after the move is something its owner can check in Dia before Arc closes.

An earlier account makes that check concrete without settling it. A migration guide last updated June 4, 2026 said Dia’s importer then moved bookmarks and passwords but lost Spaces, pinned tabs and Easels. Its author, Kshetez Vinayak, founded SupaSidebar, a product pitched to people who want to retain Arc-style organization. The guide predates the company’s October promise, and its author has a commercial interest in migration difficulties. Dia’s importer may have improved since June; the older account cannot establish what it transfers today.

It does identify useful things to examine. Does each Space arrive with the expected tabs? Do folders remain in the intended Space? What happens to pinned tabs and Easels, which the company does not name in its shutdown announcement? If an extension appears, does its familiar function still work? These questions follow from the difference between a completed import and a restored routine.

A separate browser switch illustrates the limits of migration shorthand. In one Chrome-to-Firefox move, a MakeUseOf writer imported bookmarks, passwords, autofill information and open tabs, then reinstalled extensions separately. He found the process easy. That is one person’s experience, and Chrome was not shutting down. It shows why “everything came over” can describe a successful move even when different parts of the setup take different routes. Arc users have the added pressure of an account and service deadline.

Dia is the company’s intended destination, with optional AI features and, the company says, free access to the browser features Arc users already use. A user who wants the closest supported continuation has a clear first option. Someone whose priority is a familiar sidebar or a particular arrangement of pinned tabs has a different question to answer before choosing any replacement. The choice depends on which parts of Arc were conveniences and which had become the structure of their work.

December 22 is the date Arc stops working on desktop. The useful date for an Arc user is earlier: the day they can open Dia, inspect a Space they know well and see whether the tabs, folders and tools are where they need them.