What Is Arc Max?
Arc Max is a set of AI-powered tools built into the Arc browser, developed by the Browser Company, to simplify everyday browsing tasks. It’s an optional upgrade that users can turn on from the settings menu. You can activate all features at once or enable only the ones you find useful.
Arc Max isn’t a full AI assistant, it’s a bundle aimed at reducing friction in common web activities. It is free and labelled experimental. It includes the following features:
- 5-second previews: Hover over a link while holding Shift to see a short AI-generated summary of the page.
- Tidy tab titles: When you pin a tab, Arc can shorten and clean up the title automatically. You can still rename tabs manually if needed.
- Tidy downloads: Downloaded files are automatically renamed to make them easier to organize and find later. You can undo renaming with a single click.
- ChatGPT in Command Bar: Press Command-Option-G to ask ChatGPT a question directly from the Arc Command Bar.
- Instant links: Type a search in the Command Bar and press Shift + Enter to go straight to the top result. You can also use search shortcuts like “Folder of…” to open grouped results in multiple tabs.
- Tidy tabs: Click the broomstick icon to auto-organize your “Today Tabs.” This cleans up clutter in the sidebar without affecting your pinned or regular tabs.
Important note: In May 2025, the Browser Company announced Arc browser will enter maintenance mode. As of the time of this writing, the browser is still available, but users are advised to consider switching to Dia browser, which is now the company’s main focus, and has more advanced AI features than Arc Max.
This is part of a series of articles about AI Browser
In this article:
- Arc Browser in Maintenance Mode and the Transition to Dia Browser
- Arc vs. Arc Max Add-On vs. Dia Browser
- Pros and Cons of Arc Browser with Arc Max Add-On
- Arc Max Security Issues
Arc Browser in Maintenance Mode and the Transition to Dia Browser
Arc has had its active feature development stopped in 2025. The company says it will continue providing security patches and stability fixes, but no new features will be built for Arc going forward.
The Browser Company’s CEO Josh Miller explained that although Arc had a passionate user base, its unconventional design and complexity limited mainstream adoption, leading to what the team called a “novelty tax”: Users liked it, but few adopted many of its advanced capabilities. Arc will still function and be maintained but is essentially frozen in terms of innovation.
Dia is a new browser being developed by The Browser Company with a strong focus on artificial intelligence integration. It’s designed more as an AI-native browsing environment, blending search, chat, task automation, and intelligent assistance into the browsing experience. It moves beyond traditional browsing by offering features like AI side-panels, contextual automation, and conversational interaction with web content.
Arc vs. Arc Max Add-On vs. Dia Browser
Arc is a Chromium-based web browser originally designed to rethink the browser interface with productivity-focused features and a minimalist, sidebar-centric UI. It introduced things like customizable spaces and a quick Command Bar for fast navigation.
Arc Max is an optional AI feature bundle for the Arc Browser, not a separate browser. It enhances Arc with AI-powered tools that make browsing smarter and faster.
Key enhancements of Arc Max:
- Ask AI on any page: Ask questions about the current webpage content directly.
- Webpage previews: Hover + key trigger to see quick summaries without clicking.
- Smarter tab and download naming: Automatically tidy up tab titles and downloaded file names.
- ChatGPT integration: Invoke ChatGPT straight from Arc’s search/command bar for quick responses.
Dia Browser is a new AI-first web browser from The Browser Company — reimagined around built-in generative AI that interacts with your content, helps with tasks across tabs, and provides contextual assistance.
Core focus:
- AI chat with your tabs: You can query Dia about open tabs and it uses context from multiple pages to answer.
- Contextual content understanding: AI can summarize videos, compare data across tabs, and support writing or planning tasks.
- Skills and automation: Create reusable AI actions that can automate browsing tasks.
Unlike Arc’s unique sidebar UI, Dia adopts a more traditional browser layout (tabs across the top) and centers AI as a core part of the experience rather than an add-on.
Pros and Cons of Arc Browser with Arc Max Add-On
Arc Max brings AI-driven enhancements to the Arc browser without overhauling the core experience. The features improve tab management, multitasking, and reduce the cognitive load of everyday browsing. While Arc Max adds smart tools for power users, there are trade-offs in its design and longevity that are worth considering.
Pros
- Improved tab organization: Arc Max builds on Arc’s tab system by automatically renaming tabs and downloads, and helping manage clutter with features like Tidy Tabs and Tidy Titles. Combined with the sidebar layout and Spaces, it makes keeping track of browsing sessions easier.
- Fewer unnecessary tabs: Features like floating link previews and instant summaries reduce the need to open new tabs just to check what a link contains. This helps keep your workspace clean and avoids the tab overload common in other browsers.
- Efficient multitasking: Split view lets users open and operate on up to four tabs in a single window. You can save and reuse these layouts, which is ideal for workflows that regularly require the same set of sites.
- Streamlined navigation: The Command Bar allows you to search, trigger commands, or ask ChatGPT without leaving the browsing context. It’s tightly integrated, letting you access AI help and search shortcuts quickly.
- Thoughtful design and customization: Arc’s minimal UI, combined with customizable Spaces and color themes, makes for a visually tidy interface that still accommodates heavy usage without feeling crowded.
Cons
- Uncertain long-term support: With a newer AI-focused tool planned for release in 2025, there’s concern that Arc Max could eventually receive less attention or support. Users might face disruptions if priorities shift within the company.
- Unconventional workflow can be disruptive: Arc’s interface, especially the sidebar and search-centric tab opening, requires a shift from traditional browsing habits. If you’re used to Chrome or Safari, it may feel unintuitive at first.
- Temporary tabs may be too aggressive: Arc’s auto-archiving of inactive tabs after 12 hours (or up to 30 days with settings adjustments) might frustrate users who prefer to leave tabs open long-term.
- Search performance isn’t perfect: The built-in search sometimes lags or misses results, which can interrupt workflows that rely on quick navigation.
- Limited blank workspace options: There’s no easy way to open a completely empty space or window without preloaded bookmarks or favorites, which can be distracting during focused work.
Arc Max Security Issues
Arc Max has experienced multiple security incidents. While none of these incidents resulted in confirmed user exploitation, they reveal areas where both the Arc browser and its Max features required urgent fixes.
Permission bypass on Windows (CVE-2024-52928)
A vulnerability in Arc for Windows allowed sites with previously granted permissions to automatically gain additional permissions without explicit user approval. This issue stemmed from a flaw in how follow-up permission requests were handled, where simply clicking anywhere on the page could silently authorize new access. The problem affected all Arc for Windows versions up to 1.26.0 and was patched in version 1.26.1.
Legacy Boost vulnerability on macOS
On the Mac version, legacy Boosts—a feature allowing custom code injection—posed a risk of local file system access through a crafted interaction in an Easel page. Although this required multiple user actions and no abuse was detected, the potential for a user to unknowingly install a Boost with full disk write access led to the complete removal of the legacy Boost feature in version 1.66.0.
Easel URL spoofing
Another Easel-related issue allowed attackers to craft pages that could appear as trusted domains when shared and opened in external browsers. While internal validation worked correctly, attackers could bypass these checks by directly manipulating API requests. The vulnerability was mitigated by strengthening backend validation and preventing misleading URLs.
Remote code execution risk (CVE-2024-45489)
The most critical incident involved misconfigured Firebase access controls that enabled attackers to reassign ownership of Boosts across users. This opened the door to remote code execution by allowing unauthorized JavaScript injection. The issue was fixed within 24 hours, and additional backend controls were implemented to prevent recurrence.
AI Browser Security with Seraphic
AI-powered browsers and extensions boost productivity but also expand the attack surface, making traditional perimeter defenses insufficient. Seraphic delivers browser-native security that protects AI workflows directly in AI and traditional browsers without forcing users to switch tools. By operating inside the JavaScript engine, Seraphic can inspect AI activity in real time, block malicious extensions, and prevent data leakage, prompt injection, and credential theft at the session level. Security teams gain full visibility into GenAI usage and can enforce granular policies on what data AI tools can access or exfiltrate across both browsers and Electron-based apps like ChatGPT desktop.
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