Firefox 149 Adds Free VPN, Split‑Screen Browsing, Tab Notes and Optional AI Windows

Mozilla’s latest Firefox 149 release brings a suite of tools aimed at boosting privacy, productivity and AI‑powered browsing. The update introduces a free built‑in VPN, a split‑view mode for multitasking, a tab‑note feature for quick reminders, and optional AI windows that can be enabled on demand. Below we break down what each feature does and how it changes the way you use the browser.

New Privacy Enhancements: Built‑in VPN and More

Firefox 149’s biggest headline is the inclusion of a free VPN that runs directly inside the browser. Unlike third‑party extensions, the VPN is integrated into the core, meaning it starts automatically when you launch Firefox and can be toggled with a single click. The VPN routes traffic through Mozilla’s secure servers, masking your IP address and encrypting your browsing data. While it’s not a full‑blown VPN service with global server options, it provides a lightweight privacy layer for everyday use.

In addition to the VPN, the update tightens cookie handling and adds a new “Privacy‑First” mode that blocks trackers by default. Users can still customize which trackers to allow, but the default settings now prioritize privacy out of the box.

Productivity Boosts: Split Views and Tab Notes

Firefox 149 introduces a split‑view mode that lets you open two tabs side‑by‑side within the same window. This is especially useful for comparing documents, watching a video while reading a tutorial, or simply keeping reference material visible while you work. The split view can be resized, and you can choose to pin one side so it stays static while the other scrolls.

Another productivity feature is the tab‑note system. By right‑clicking a tab, you can add a short note that appears as a tooltip when you hover over the tab. This is ideal for marking a page as “read later,” reminding yourself of a key point, or flagging a page that needs follow‑up. Notes are stored locally and sync across devices if you’re logged into Firefox Sync.

AI Integration: Optional AI Windows

Mozilla has been cautious about AI, but Firefox 149 offers an optional AI window that can be enabled by the user. When activated, the AI window appears as a floating panel that can answer questions, summarize articles, or generate text. It uses a lightweight model that runs on the client side, so no data is sent to external servers unless you opt in. The AI panel can be docked to the side of the browser or set to appear as a pop‑up.

Users can also choose to disable the AI feature entirely, keeping the browser free of any machine‑learning components. Mozilla stresses that the AI window is an experiment and will be refined based on community feedback.

Feature Summary

• Free built‑in VPN with automatic activation and easy toggle
• Split‑view mode for side‑by‑side browsing
• Tab‑note system for quick reminders and annotations
• Optional AI window for on‑device question answering and summarization
• Enhanced privacy settings, including a new “Privacy‑First” mode

FAQ

Q: Does the built‑in VPN require a subscription?

A: No. The VPN is free and included in Firefox 149. It offers basic routing and encryption but does not provide a global server network like paid VPN services.

Q: Will the AI window collect my browsing data?

A: The AI model runs locally by default. If you choose to enable cloud‑based AI, you can opt‑in to send data to Mozilla’s servers, but this is not required.

Q: Can I use split view on mobile?

A: The split‑view feature is currently limited to desktop browsers. Mobile support is planned for a future release.

Q: How do I add a note to a tab?

A: Right‑click the tab, select “Add note,” type your text, and click “Save.” The note will appear as a tooltip when you hover over the tab.

Conclusion

Firefox 149’s blend of privacy tools, productivity enhancements and optional AI demonstrates Mozilla’s commitment to giving users control over their browsing experience. Whether you’re a privacy‑conscious user, a multitasker who needs split screens, or someone curious