Privacy Policy For CLS Scanner
CLS Scanner is a Chrome extension for auditing image-related layout-shift issues, sitemap scans, report exports, and optional Pro license activation.
Privacy at a glance
CLS Scanner performs its page scanning, DOM inspection, image analysis, report generation, and most audit logic locally in your browser.
What the extension stores locally
The extension stores the following in chrome.storage.local on your device:
- Settings such as theme preference and PageSpeed Insights API keys
- Scan history and saved audit sets
- Locally generated reports and project data
- Pro license state used to keep features unlocked on this browser profile
What is processed locally
The extension performs its page scanning, DOM inspection, image analysis, report generation, and most audit logic locally in your browser.
Optional external requests
Google Analytics
If analytics is enabled by the publisher, the extension sends limited product analytics events to Google Analytics 4 through a publisher-controlled proxy endpoint. These events are used to understand extension usage such as installs, scans, exports, and license flow outcomes. The extension does not send audited page URLs, HTML snippets, or license keys in analytics events.
Google PageSpeed Insights
If you enable PageSpeed Insights reporting, the audited page URL is sent to Google PageSpeed Insights so the extension can show PSI metrics such as LCP, CLS, and INP.
Lemon Squeezy license activation
If you activate Pro features, the extension sends your license key and browser-profile instance label to Lemon Squeezy to activate, validate, or deactivate the license.
What the extension does not do
- It does not inject ads.
- It does not send audited page URLs, HTML snippets, or license keys to analytics.
- It does not sell personal data.
Contact
If you publish this extension, replace this section with your real support email or support URL before hosting the policy publicly.