Is Core Web Vitals Test safe?
Most notable: chrome debugger, access data on all websites.
This extension has not been updated in 18 months. Unmaintained extensions keep whatever permissions they were granted, and security fixes stop arriving.
What it can access (6 permissions)
Read from the extension’s own manifest. These describe what it is technically able to do — not what it does do.
- Chrome debuggercritical
Attach to the browser's debugging protocol, which can read and modify anything on any page, including passwords as you type them.
- Access data on all websitescritical
Read and change the content of every site you visit, including banking and email.
- Tab informationmedium
See the URL and title of every tab you have open.
- Inject scriptsmedium
Run its own code inside pages you visit.
- Local storagelow
Store its own settings and data locally.
- Current tab on clicklow
Access the current tab only when you explicitly click the extension.
Alternatives
Is this your extension?
Track your rating, install count and competitors over time, and get alerted when a rival ships an update or your ranking moves.
Claim this extensionData read from the Chrome Web Store listing on 2026-09-16. Install counts are the store’s own rounded buckets. Permission descriptions are derived from the extension’s published manifest. This page describes capabilities, and is not an accusation of misuse.