5 Best Zen Browser Extensions + How to Install Them (2026)
Zen browser extensions come from addons.mozilla.org. Get the exact install steps, the 5 best carry-overs, and full uBlock Origin, not Chrome's MV3 Lite.
You installed Zen for the vertical tabs, open the Add-ons Manager to move your extensions across, and the Chrome Web Store simply isn’t there. Zen is a Firefox fork (v1.22.1b on Firefox 155.0, September 2026) that pulls add-ons from addons.mozilla.org. The five carry-overs below, the install routes, and one decision rule tell you whether Zen is the right call.
What is at stake before you commit: your saved passwords if they live in a Chrome-only password manager, and any SSO helper or dev tool built exclusively for Chrome’s APIs. Those losses stay invisible until you are past the switch and a login screen or workflow just does not load.
Key takeaways
- Zen’s add-ons come from addons.mozilla.org. The install button still reads “Add to Firefox” because Zen reuses Firefox’s installation machinery.
- Five well-maintained extensions (uBlock Origin, Bitwarden, Dark Reader, Privacy Badger, Vimium-FF) carry over. A Chrome-only tool with no Firefox port will not.
- Zen ships vertical tabs, named workspaces, and a 4-tab split view natively, so a typical Chrome stack needs fewer add-ons in Zen.
Installing Add-ons in Zen: Three Routes to addons.mozilla.org
Three paths reach the Add-ons Manager, and all of them land on addons.mozilla.org.
Keyboard route:
- Press Ctrl+Shift+A. The Add-ons Manager opens (this is the Firefox shortcut, unchanged in Zen).
- Click Find more add-ons. Your browser navigates to addons.mozilla.org.
- Search for the add-on, open its page, click Add to Firefox.
- Confirm the permission prompt. The add-on appears in your toolbar or menu.
URL-bar route:
- Click the settings icon in the URL bar.
- Select the plus icon to jump to the Add-ons Manager page.
- From there, follow steps 2 through 4 of the keyboard route.
Main-menu route:
Open the main menu and select Add-ons and themes. This also lands on the Add-ons Manager.
The “Add to Firefox” label is correct and intentional. Zen reuses Firefox’s extension infrastructure, so the button keeps its Firefox wording even though you are running Zen. After install, you manage the add-on the same way you would in Firefox: pin it, set per-site permissions, or disable it from the Add-ons Manager. Extension toggles are off by default on Private Windows and restricted sites, a privacy behavior inherited from Firefox.
The 5 Carry-Over Extensions (and the One That Is Not)
An extension works in Zen only if a Firefox build exists on addons.mozilla.org. The five below are the ones most Chrome users will recognize:
| Extension | Available in Zen? | Why it matters |
|---|---|---|
| uBlock Origin | Yes | Full version on the Firefox side, unlike Chrome’s MV3-restricted Lite |
| Bitwarden | Yes | First-class Firefox build with full sync |
| Dark Reader | Yes | Cross-store parity, same dark-mode engine |
| Privacy Badger | Yes | EFF maintains both store builds |
| Vimium | Yes (as Vimium-FF) | Keyboard-driven navigation |
| A Chrome-only extension with no Firefox port | No | The blocker that stops most switchers |
The carry-overs are the big, well-maintained, cross-platform tools. The long tail is where people get stuck: a niche productivity add-on, a company SSO helper, a Chrome-specific developer tool. If your daily workflow depends on one of those, Zen cannot run it. That is a Firefox-engine limitation, not a Zen bug, and no setting changes it.
One upside worth naming: because Zen is Firefox-based, you get the full uBlock Origin rather than the Manifest V3-restricted version Chrome enforces. For ad and tracker blocking specifically, the Firefox side is the stronger build right now.
If you rely on Vimium for keyboard browsing, Chrome has an answer too. SuperchargeNavigation ships a hint mode where you hold Shift to label every link with a letter badge, then type the badge to click or press Shift+Alt and a badge to peek the link in an overlay without leaving the page. Losing Vimium to a Chrome-only edge case is not a dead end.
What Does Not Transfer: Themes and Edge Cases
Two categories do not survive the move even within the Firefox ecosystem.
Firefox themes are unsupported in Zen. Zen handles its appearance through Zen Mods, a CSS-based theming system for the browser UI that is separate from Firefox’s theme engine. Functional add-ons install fine; visual themes from addons.mozilla.org do not apply. If you want to restyle Zen, Zen Mods is the path.
A small number of add-ons hit edge cases. Zen modifies the browser interface substantially, and add-ons are tested against stock Firefox first. An add-on that assumes Firefox’s exact UI layout or pokes at unmodified browser chrome can misbehave in Zen. This is a minority, and it concentrates in add-ons that manipulate the toolbar or sidebar directly. Core functional categories (content blockers, password managers, readers, screenshot tools) are dependable.
What Zen Ships That Replaces Chrome Extensions
Part of why Zen needs fewer add-ons is that features Chrome users reach for extensions to get are built in:
- Vertical tabs are the default layout, not a flag or an add-on.
- Named workspaces with tab isolation are first-class. Switching swaps the entire tab context.
- Split view tiles up to four tabs in a grid layout.
- Glance gives a live tab preview without switching away from the active tab.
- Zen Mods handle per-site CSS and JS customization, replacing the Stylus and UserScripts pairing.
A chunk of a typical Chrome extension stack (a vertical-tab manager, a workspace tool, a site-styling extension) is redundant in Zen. The add-ons you still need are the cross-cutting utilities: a blocker, a password manager, a reader. Those are exactly the ones with reliable Firefox builds.
Chrome has closed part of this gap on its own. Native vertical tabs (shipped in Chrome 146, per the June 2026 version of this guide) are in the current stable, Chrome 153. Say you keep ten tabs open across two projects. Chrome’s built-in tab management covers that load without an extension.
If Your Stack Is Chrome-Only: The Nav Path
When the deciding extension has no Firefox port, switching to Zen costs you that tool, your saved passwords if they live in a Chrome-only manager, and your existing sync setup. For a lot of people that price is too high. The alternative is to recreate Zen’s workflow inside Chrome.
Chrome covers the layout natively: vertical tabs for the sidebar feel, and native split view for side-by-side tabs. The features Chrome still lacks natively (named workspaces, a command bar, session recovery, keyboard-driven link navigation) come from SuperchargeNavigation. It adds named workspaces with full tab isolation, an Alt+K command bar for search across tabs, history, and bookmarks, hint-mode link navigation, 50 rolling auto-snapshots for session time-travel, and a dockable in-page sidebar on the left or right. It runs locally with no account and zero telemetry, and Chrome-native sync is optional and on by default for fresh installs.
On the memory and blocking side, SuperchargePerformance suspends idle tabs via chrome.tabs.discard() (low-timer 15 min, medium 5 min) and ships 195K+ blocking rules. The popup shows a conservative RAM estimate (suspensions times 80 MB, a model not a measurement). Tab suspension frees roughly 90 to 95 percent of a discarded tab’s renderer memory, per the architecture of chrome.tabs.discard().
The One Decision
The whole question reduces to one check: open your Chrome extension list and ask which ones have a Firefox build on addons.mozilla.org.
If every must-have extension carries over (or Zen’s built-ins replace it), Zen is a clean switch. Install the cross-store essentials from addons.mozilla.org, lean on Zen Mods for theming, and the losses are minor.
If even one critical extension is Chrome-only, that wall at the Add-ons Manager is the whole story. Stay on Chrome, enable native vertical tabs for the sidebar layout, and add SuperchargeNavigation for the workspaces, command bar, and keyboard hints that made Zen feel good in the first place. SuperchargePerformance covers the RAM and blocking side if you want it.
For a feature-by-feature comparison of the two paths, see the Zen vs Chrome extensions breakdown. For the broader workspace question, does Chrome have workspaces? covers what native Chrome can and cannot do.
FAQ
Where do Zen browser extensions (addons) come from?
As of September 2026, Zen Browser installs all extensions from addons.mozilla.org, the Firefox add-on store. Zen is a Firefox fork (v1.22.1b on Firefox 155.0), so it uses the Firefox add-on ecosystem. The Chrome Web Store is not available in Zen. The terms “addons” and “extensions” are interchangeable; both refer to add-ons from addons.mozilla.org.
Is there a “Zen internet extension”?
As of September 2026, there is no product called a “Zen internet extension.” Zen Browser is a browser, not a single extension. Its add-ons come from addons.mozilla.org. If you are looking for a specific tool, search addons.mozilla.org directly or check whether Zen’s built-in features (vertical tabs, workspaces, split view, Zen Mods) cover the need before installing an add-on.
How do I install an extension in Zen Browser?
As of September 2026, open the Add-ons Manager with Ctrl+Shift+A (or main menu then Add-ons and themes, or the URL-bar settings icon then the plus icon), browse to addons.mozilla.org, and click “Add to Firefox” on any add-on. The button keeps its Firefox label because Zen reuses Firefox’s installation machinery.
Do Chrome extensions work in Zen Browser?
No. As of September 2026, Zen is Firefox-based and cannot run Chrome Web Store extensions. Extensions that ship in both stores (uBlock Origin, Bitwarden, Dark Reader, Privacy Badger, Vimium as Vimium-FF) carry over. A Chrome-only extension with no Firefox port will not work in Zen.
Do Firefox themes work in Zen Browser?
No. As of September 2026, Firefox themes are not compatible with Zen. Zen handles appearance through Zen Mods, its own CSS-based theming system for the browser UI. Functional add-ons from addons.mozilla.org install fine; visual themes do not.
What is the Chrome equivalent of Zen’s features?
As of September 2026, the closest Chrome setup is native vertical tabs plus SuperchargeNavigation for named workspaces, an Alt+K command bar, hint-mode link navigation, and 50 rolling auto-snapshots. SuperchargePerformance covers RAM suspension and ad blocking with 195K+ blocking rules. This keeps the full Chrome Web Store library while adding Zen-style tab management.
Frequently Asked Questions
Where do Zen browser extensions (addons) come from?
Is there a 'Zen internet extension'?
How do I install an extension in Zen Browser?
Do Chrome extensions work in Zen Browser?
Do Firefox themes work in Zen Browser?
What is the Chrome equivalent of Zen's features?
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