Core Web Vitals Estimator
Estimates CWV signals from HTML analysis: LCP candidates, CLS risk factors, render-blocking resources, and FID/INP risk from JavaScript weight.
Install
pip install -r requirements.txtRun
python core_web_vitals_estimator.py --url https://example.compython core_web_vitals_estimator.py --urls https://a.com https://b.com --output cwv.xlsxExport
Add --output report.xlsx to save results as a spreadsheet.
| Flag | Description |
|---|---|
--url | Single URL |
--urls | Urls. Multiple values allowed |
--output | Save as XLSX |
python core_web_vitals_estimator.py --helpRun as part of a full site audit. Export issues to XLSX, prioritize by severity, and create a fix roadmap for the dev team.
Run before launching a new site or after a migration. Catch technical issues before Google crawls the new version.
Schedule regular checks and compare outputs over time. Catch regressions early.
Combine with other tools for a complete workflow:
Requires: beautifulsoup4, pandas, requests. All included in requirements.txt.
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