Is uBlock Origin Lite as effective as classic uBlock Origin for blocking ads?

For most users, yes. If you primarily rely on filter lists (EasyList, EasyPrivacy, etc.), uBlock Origin Lite blocks the same content. Advanced users with custom dynamic rules may notice differences due to MV3 restrictions.

Why does uBlock Origin Lite need fewer permissions than classic uBlock Origin?

Manifest V3 was designed to be more privacy-focused. uBlock Origin Lite uses declarativeNetRequest instead of the webRequest API, which requires fewer broad permissions. This is actually a privacy improvement.

Can I use uBlock Origin Lite in Firefox?

Firefox support for uBlock Origin Lite is limited. Firefox still supports Manifest V2, so classic uBlock Origin is recommended for Firefox users. The developer has not prioritized Firefox porting for Lite.

Will more features be added to uBlock Origin Lite over time?

Some MV3 restrictions cannot be worked around by design. The developer has stated that uBlock Origin Lite aims to provide the best possible ad blocking within MV3 constraints. Filter list support will continue to improve.

Is uBlock Origin Lite developed by the same person as classic uBlock Origin?

Yes. Both versions are developed by Raymond Hill (gorhill), the original creator of uBlock Origin. uBlock Origin Lite is the MV3-compatible version.

What happens if I install uBlock Origin Lite alongside other ad blockers?

Running multiple ad blockers simultaneously is generally not recommended as they may conflict or cause performance issues. Choose one MV3 ad blocker that meets your needs.

uBlock Origin Lite vs uBlock Origin: What's Different?

Quick Answer

uBlock Origin Lite is the Manifest V3 version with some feature differences. Both are developed by Raymond Hill. Static filter lists work the same in both versions. Dynamic filtering rules are restricted in uBlock Origin Lite due to MV3 limitations. Most users who rely on filter lists will find uBlock Origin Lite equivalent.

uBlock Origin Lite vs Classic uBlock Origin

Feature	uBlock Origin (MV2)	uBlock Origin Lite (MV3)
Manifest Version	MV2	MV3
Static Filter Lists	Yes (full)	Yes (full)
Dynamic Filtering Rules	Full support	Limited
Network Request Blocking	Full control	Restricted
Chrome 138 Support	No	Yes
Firefox Support	Yes	Limited
Permissions Required	More (webRequest)	Fewer (declarative)

Manifest V2 vs Manifest V3: The Core Difference

Manifest V3 limits how extensions can interact with network requests. Classic uBlock Origin uses the webRequest API for detailed network filtering, which is restricted in MV3. uBlock Origin Lite was rewritten to use declarativeNetRequest, which provides good ad blocking within MV3 constraints.

Filtering Behavior: What Changes

Static filter lists, which handle most ad blocking, work identically in both versions. EasyList, EasyPrivacy, and other community filter lists function the same. Dynamic filtering rules, which let users create custom blocking rules, have limitations in uBlock Origin Lite.

Who Should Use uBlock Origin Lite

If you use Chrome 138 or later and primarily rely on pre-made filter lists, uBlock Origin Lite provides equivalent blocking. Most users will not notice a difference. The reduced permissions in Lite are actually a privacy improvement.

Who May Need a Different Approach

Users who rely heavily on dynamic filtering rules, specific network request blocking, or advanced user scenarios may find uBlock Origin Lite limiting. Firefox with classic uBlock Origin remains an option, though switching browsers has its own tradeoffs.

Frequently Asked Questions

uBlock Origin Lite vs uBlock Origin: What's Different?

Quick Answer

uBlock Origin Lite vs Classic uBlock Origin

Manifest V2 vs Manifest V3: The Core Difference

Filtering Behavior: What Changes

Who Should Use uBlock Origin Lite

Who May Need a Different Approach

What Not to Do

Best Options at a Glance

Frequently Asked Questions

Frequently Asked Questions

Sources

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