10 Best Manifest V3 Extension Replacements for Chrome (2026)

Manifest V3 is now the only extension platform that works on current Chrome. Google finished retiring Manifest V2 on the stable channel in 2025, disabling classic extensions like the original uBlock Origin. The final remaining V2 listings disappeared from the Chrome Web Store on August 31, 2026.

That doesn’t mean every favorite extension is gone. Some have official MV3 rewrites, while others have community replacements—or better alternatives outside Chrome.

Here are the 10 replacements that matter most in 2026.

1. uBlock Origin Lite — The closest official replacement

If you used the original uBlock Origin, this is the safest upgrade. It’s the official Manifest V3 version created by Raymond Hill.

Independent testing in August 2026 found that uBlock Origin Lite was the only Chrome MV3 blocker that successfully neutralized all 14 tested ad and tracking scripts through a mix of network blocking and script stubbing.

Set it to Complete mode after installing—it requests additional permissions but delivers noticeably stronger filtering.

What you lose compared to classic uBO

• No dynamic filtering.
• No cosmetic filtering as powerful as the old version.
• Custom filter management is much more limited because of MV3 restrictions.

Best for: People staying on Chrome.

2. AdGuard — The strongest Chrome workaround

AdGuard takes a different approach.

Its free Chrome extension works within Manifest V3, but the paid desktop app filters traffic outside Chrome’s extension API. That means it can block ads across browsers and desktop apps.

This makes it one of the few ways to recover some of the power lost when Chrome removed the old blocking API.

Pros

• Better YouTube ad blocking.
• System-wide filtering.
• Works beyond Chrome.

Best for: Users who don’t mind installing desktop software.

3. Ghostery — Best privacy-focused replacement

Ghostery remains one of the cleanest privacy dashboards available.

Instead of acting as a perfect uBO clone, it focuses on showing exactly which companies are tracking each page.

One important setup tip: after installing, enable its protection rules during onboarding. Fresh installs can appear surprisingly weak until those rules are activated.

Best for: Privacy-conscious users.

4. The Marvellous Suspender — The safest Great Suspender successor

The original Great Suspender was removed after a malware incident in 2021.

The Marvellous Suspender became the trusted continuation, offering automatic tab suspension to reduce RAM usage.

If you only need basic memory savings, Chrome’s built-in Memory Saver is now a perfectly reasonable zero-extension alternative.

Best for: Laptop users with dozens of tabs.

5. Brave Browser — Skip MV3 entirely

Suggested tags: Chrome, Manifest V3, Extensions, uBlock Origin, Ad Blocking, Privacy, Firefox, Brave, Browsers, Productivity

Sometimes the best replacement isn’t another extension.

Brave includes its own blocker inside the browser itself, so it isn’t limited by Chrome’s extension API in the same way.

It blocks:

• Ads
• Trackers
• Many fingerprinting techniques

For many former uBO users, switching to Brave requires less maintenance than rebuilding an extension stack.

Best for: People who just want things to work.

6. Firefox Browser + uBlock Origin — Still the gold standard

If your goal is getting the original uBlock Origin experience back, Firefox remains the answer.

Unlike Chrome, Firefox continues supporting the more powerful blocking capabilities that made classic uBO famous.

You keep features like:

• Dynamic filtering
• Advanced custom rules
• Full-strength element picker
• More flexible filter lists

No Chrome replacement matches this combination.

Best for: Power users.

7. Tampermonkey — Userscript support survived MV3

Good news: if your workflow depends on userscripts, you don’t need to abandon Chrome.

Tampermonkey successfully migrated to Manifest V3.

If you prefer open source, Violentmonkey remains an excellent lightweight alternative.

Best for: Automation and custom website tweaks.

8. Imagus replacements — Hover zoom isn’t dead

The original Imagus never received an official Manifest V3 release.

Instead, two community projects keep the idea alive:

• Imagus Mod (sideloaded)
• Imagus Reborn (primarily for Firefox)

These aren’t quite as effortless as the old Chrome Store version, but they’re currently the closest replacements.

Best for: Image-heavy browsing.

9. Privacy Badger + ClearURLs — Small tools that still matter

These two work surprisingly well together.

Privacy Badger learns tracking behavior over time, while ClearURLs removes tracking parameters from links before they clutter your browsing.

Neither replaces a full ad blocker alone, but together they provide a lightweight privacy boost.

Best for: Minimalists.

10. Auto Tab Discard — Lightweight performance pick

If your old setup combined The Great Suspender with an ad blocker, Auto Tab Discard is one of the simplest modern replacements.

It focuses on one job:

• Automatically unloading inactive tabs to reduce memory usage.

Some newer MV3 extensions combine performance tools with basic blocking features, but dedicated tab management remains the cleaner choice.

Best for: Heavy multitaskers.

Which replacement should you choose?

You want… Best choice Stay on Chrome for free uBlock Origin Lite Strongest blocking on Chrome AdGuard desktop app No extensions at all Brave Original uBlock Origin features Firefox + uBlock Origin Better RAM usage The Marvellous Suspender Userscripts Tampermonkey Hover-to-zoom images Imagus Mod

The uncomfortable reality of Manifest V3

Manifest V3 permanently changed what Chrome extensions can do.

The biggest difference is that Google replaced the old blocking Manifest V2 is officially gone from Chrome. These are the best Manifest V3 replacements for uBlock Origin, The Great Suspender, Imagus, and other classic extensions in 2026. API with Declarative Net Request (DNR) for most extensions. That improves browser performance and security in Google’s view, but it also limits real-time filtering, dynamic rules, and some advanced blocking techniques.

That’s why no Chrome extension in 2026 fully recreates the original uBlock Origin experience.

If you want maximum control, Firefox with classic uBlock Origin remains unmatched. If you’re staying on Chrome, uBlock Origin Lite in Complete mode is still the best free replacement, while AdGuard offers the strongest workaround by moving filtering outside the browser.

FAQ

Can I still use the original uBlock Origin on Chrome?

No. The Manifest V2 version no longer runs on current stable Chrome, and its Chrome Web Store listing has been removed.

Is uBlock Origin Lite as good as the old version?

It’s the closest official replacement, but it lacks advanced features like dynamic filtering and the same level of custom filter control.

Does Brave avoid Manifest V3 limits?

Mostly. Brave’s built-in Shields feature isn’t just another Chrome extension, so it isn’t constrained in exactly the same way as MV3 extensions.

Which browser gives me the full old uBlock Origin experience?

Firefox. It still supports the capabilities that made the original uBlock Origin so powerful.

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