What is the difference between uBlock Origin and uBlock Origin Lite?

uBlock Origin Lite is an MV3-compatible rewrite of uBlock Origin. Due to Chrome MV3 limitations, some features like dynamic filtering have reduced capabilities. However, the Lite version still provides strong ad blocking and is official from the same developer.

Will my filter lists and settings transfer to uBlock Origin Lite?

Some settings may transfer, but you should review your filter list configuration in uBlock Origin Lite. The import/export functionality works differently between versions.

Is Firefox a good alternative for uBlock Origin users?

Firefox allows the classic uBlock Origin to function fully, making it a practical choice if you need specific features not available in uBlock Origin Lite.

Does uBlock Origin Lite block ads as effectively as classic uBlock Origin?

uBlock Origin Lite still provides strong ad blocking, but efficiency varies by website. The author has noted that some advanced filtering capabilities are limited in MV3.

Why did the developer create a separate Lite version instead of updating uBlock Origin?

MV3 has fundamental differences from MV2 that prevent a direct update. The developer created uBlock Origin Lite as the best possible MV3 implementation while being transparent about the limitations.

Affected by MV2Content Blocker

Best uBlock Origin Alternatives for Chrome MV3

Classic uBlock Origin stopped working in Chrome 138 because Chrome disabled Manifest V2 extensions. The official MV3 replacement is uBlock Origin Lite, developed by the same author. For full feature parity, Firefox with classic uBlock Origin remains an option. Other MV3-compatible ad blockers like AdGuard and Adblock Plus are also available.

What Happened

Chrome 138 disabled all Manifest V2 extensions, including classic uBlock Origin.
uBlock Origin Lite was released as the official MV3-compatible version by the same developer.
The author noted that MV3 limitations prevent a feature-identical replacement.
Firefox continues to support Manifest V2, allowing classic uBlock Origin to work there.

Best Alternatives to uBlock Origin

Alternative	Best For	Status	Links
uBlock Origin Lite Official uBlock Origin project for MV3 · Developed by the same author	Users wanting the official MV3 continuation of uBlock Origin	Active (MV3)	Chrome Store
AdGuard AdBlocker Full-featured ad blocking · Includes privacy protection features	Users looking for comprehensive ad blocking with additional privacy features	Active (MV3)	Chrome Store
Adblock Plus Long-established reputation · Highly customizable filter lists	Users familiar with Adblock Plus or wanting customizable filter lists	Active (MV3)	Chrome Store
Firefox with uBlock Origin Classic uBlock Origin works fully in Firefox · Full feature parity with original uBlock Origin	Users needing full classic uBlock Origin functionality	Active (MV3)	Website

Migration Steps

Install uBlock Origin Lite from the Chrome Web Store.
Review default filter lists and adjust to your preferences.
Test commonly visited websites for proper ad blocking.
Configure dynamic filtering rules if you used custom rules in classic uBlock Origin.
Consider Firefox if you need full classic uBlock Origin functionality.

Safety Notes

uBlock Origin Lite is the official MV3 version from the original uBlock Origin developer.
Only download from the official Chrome Web Store or uBlock Origin GitHub.
uBlock Origin Lite has limited permissions compared to classic uBlock Origin.
Review extension permissions to ensure they match the stated functionality.

Extension No Longer Supported Fix Manifest V2 Disabled Guide

Frequently Asked Questions

Sources

uBlock Origin Wiki - About Chrome's "This extension may soon no longer be supported" — Raymond Hill (uBlock Origin Author)
uBlock Origin Lite Chrome Web Store — Chrome Web Store
Chrome Manifest V2 Deprecation Timeline — Google Chrome Developers

What Happened

Best Alternatives to uBlock Origin

Migration Steps

Safety Notes

Related Resources

Frequently Asked Questions

Frequently Asked Questions

Sources

Sources