Is uBlock Origin Lite Safe? — Extension Safety Profile

This extension is a content blocker that uses the declarativeNetRequest API to filter network requests, which is the standard approach for modern ad blockers on Manifest V3. It requests access to all URLs () and permissions like scripting and userScripts, allowing it to inject or modify code on any page you visit. For a general-purpose content blocker, this broad scope is expected—it needs to inspect and block requests across every site to function.

As a widely-used ad-blocking extension, users should be aware of category-typical risks. Such tools can sometimes break website functionality or interfere with tracking scripts, and they are frequent targets for copycat or clone extensions that attempt to impersonate the original. It is also common for these extensions to be approached with offers to join "acceptable ads" programs, though no such arrangement is indicated here. Users should always verify they have installed the authentic version from the official publisher.

The strongest dimension in the fact sheet is Maintenance & Ownership, reflecting a well-maintained project with a clear, long-standing publisher identity. The weakest is Permissions & Access, which is typical for this category—the extensive host and API access is inherently powerful, even if necessary for the extension's core function. The developer's stated privacy practices indicate data is not sold or used for unrelated purposes, and the high community reputation score suggests strong user trust.