Is User-Agent Switcher and Manager Safe? — Extension Safety Profile

This extension can read and modify your web requests on all sites ( host permission) using the webRequest and declarativeNetRequest APIs to change the browser’s user agent. It also uses storage for settings, scripting to inject code, and contextMenus for easy access. For a user-agent switcher, broad host permissions and request modification are expected because the extension must intercept all traffic to rewrite headers.

Any extension with the ability to see and alter all your browsing data on every website poses inherent trust requirements. User-agent switchers are often used for testing or privacy, but a careful user should only install such tools from reputable sources, check that the extension is actively maintained, and review privacy practices. Unexpected changes to user-agent headers can also break website functionality or trigger login prompts, so be aware of that possibility.

The extension’s strongest safety dimension is Maintenance & Ownership, with a perfect score reflecting an up‑to‑date version and recent activity, which lowers the risk of unpatched vulnerabilities. The weakest dimension is Permissions & Access, indicating that the broad host permissions weigh on the safety score, though this is typical for the category. The publisher’s identity score is moderate, so users who want higher confidence may prefer a developer with a longer public track record.