A tool to measure your 3rd-party exposure score for web sites you visit.

uBO-Scope promo image
What is uBO-Scope?

uBO-Scope is a unique Firefox add-on specially designed to provide you with an informed perspective about your online exposure. It calculates your third-party exposure score for the websites you visit with an aim to enhance your digital privacy. The lower the score, the better. It works on the principle of defining a third-party request as any network request to a remote server that carries a different base domain name than that of the URL in the address bar. uBO-Scope does amazing work in observing network traffic without altering it in any way.

Stats date:
Users: 880 ▲ 3
Rating: 4.72 (80)
Version: 0.1.12 (Last updated: 2018-06-09)
Creation date: 2017-08-25
Weekly download count: 41
Firefox on Android: Yes
Manifest version: 2
  • alarms
  • storage
  • unlimitedStorage
  • webRequest
  • <all_urls>
Size: 165.38K
Risk impact: High risk impact
Risk likelihood: Low risk likelihood

Other platforms

uBO-Scope (v0.1.12)
4.73 (33) 3,710
Not available on Edge


uBO-Scope will be able to function accurately only for WebExtensions-based blockers -- it is unable to do its job properly with legacy-based blockers.

The popup panel of this extension may sometimes be affected by an issue which has been fixed in Firefox 57: "WebExtension browser action popup scrolls to the top on changing an element's style" https://bugzilla.mozilla.org/show_bug.cgi?id=1324499

You should read the documentation to better understand purpose and usage: https://github.com/gorhill/uBO-Scope#preamble

To inform you about your own third-party exposure on the web pages you visit through a third party exposure score.

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User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Great tool for privacy, IT security, and developing
  • Helpful for understanding the inner workings of the internet
  • Useful for data nerds
    Most mentioned
    • Privacy
    • uBO
    • Internet understanding
    • Useful
    View all user reviews
    Risk impact

    uBO-Scope is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install uBO-Scope if you trust the publisher.

    Risk likelihood

    uBO-Scope has earned a fairly good reputation and likely can be trusted.

    Upgrade to see risk analysis details