Last updated: October 10, 2026
PerfScope is a Chrome extension that helps developers inspect webpage performance using available browser APIs. It displays performance metrics and diagnostics to help users investigate loading, rendering, resource usage and related issues.
Depending on the features used and browser support, PerfScope may access:
The extension does not need webpage information unrelated to its performance-monitoring purpose.
Information accessed by PerfScope is used to provide performance monitoring, display diagnostics, generate reports and maintain user-selected settings.
[Confirm the actual implementation before publishing this section.]
If all collected information is processed and stored locally, state that the information remains in the user’s browser and is not transmitted to an external server by the extension.
If any information is transmitted externally, identify the information, recipient and purpose here.
PerfScope may use Chrome permissions such as activeTab, scripting, storage and website access permissions to collect performance measurements, execute its packaged monitoring logic and preserve user preferences.
The exact permissions used are determined by the published extension manifest.
Locally stored information may remain in Chrome storage until the user deletes it or removes the extension, subject to Chrome’s storage behavior and the extension’s retention logic.
Users should avoid sharing exported reports that contain website URLs or other sensitive information.
PerfScope is a developer utility and is not designed specifically for children.
This policy may be updated when the extension’s features or data practices change. The latest version will be published at this URL.
For privacy questions, contact: [INSERT A REAL CONTACT EMAIL]