You can also analyse and track competing pages on-demand and upload up to 100 websites in bulk to do an analysis of a whole industry (great for thought leadership content) or to justify an investment decision in a new website.
1. Click on Technical
2. Click on Page Experience
3. Enter a URL, e.g. Type "https://www.authoritas.com"
It is important to get the Http or Https protocol correct, as if you add the website with 'http' and it is in fact 'https' then the Lighthouse API will follow the redirect and you may not get a correct reading.
Please also note, that you may want to run the check a couple of times in a row, as the initial server response may be delayed or your website's cache may not be warmed up and as a result you may record a worse performance.
4. Add a comment, e.g. Type "Initial benchmarking"
This is extremely useful if you are actually making changes to a page as you can be making changes and running new CWV tests whilst recording what changes you have made to the website.
This allows you to keep track of what changes have had the biggest impact and also avoid regressions where a change sends your CWV scores in the wrong direction. If this does happen (and it will) be sure to run a couple of consecutive tests before undoing your site changes.
5. Click on ANALYSE
6. The report will be run immediately. Please allow a few minutes to run
Once the report has completed you can click on the 'eye' icon to drill into the detailed metrics for that page. If you have checked the page more than once the you will see a line chart tracking each metric for desktop and mobile. Hover over the points on the chart to see the exact score or refer to the table below.
7. You can select multiple metrics and plot them side by side on the large line chart
8. e.g. Click on FCP and LCP for mobile and desktop
9. The line chart is annotated with your comments. Clicking on the bubble will show you the comment you added when you made a change to the website
10. You can click and drag on the chart to zoom into a specific date period
11. Click the '3 dot' menu to download an SVG image of the chart
12. You can use the filters at the top of the page to filter the data in the table and charts
13. You can select an individual row and edit the comment or delete it
You can also click the 'refresh' icon to run a report again for the selected URL. You can also select the 'check all' checkbox at the top left-hand side of the table to perform actions on all table rows, e.g. To download the table to Excel.
14. Having selected a row(s). Use the icons on the top right-hand side of the table to perform your desired action
15. For example, you can edit your comments to record what changes you have made to your site
16. As you can see all the comments in the table have now been updated
17. Clicking the 'download' icon will produce an Excel file with all the metrics for all visible rows in the table
Use the filters to narrow down your export to particular websites or pages.
18. Clicking on 'clear all filters' resets all the filters you have applied
19. You will now see the 'Return to All Reports' link at the top of the table
20. You can also upload up to 100 URLs in one go. Simply click on 'Upload URLs'
21. Then type or copy and paste your selected URLs into the text area
22. Add your comment. e.g. "Search engine industry analysis" and click 'Upload'
23. The URLs will be verified and will be added to the table. The table will show spinning icons and will refresh automatically as new data is analysed
24. You can simply compare headline metrics, or click on the 'eye' icon to see detailed reports for any URL
25. Click on the '3 dots' menu to the right of any row in the table to see the full Lighthouse API report for that page
Click 'View report' and a report will open in a new tab.
26. Example Lighthouse API report to measure the Core Web Vitals of a page
