Lightning page Analyze button
Key Takeaway
The "Analyze" button assesses a Lightning record page based on its visible standard and custom components. Components in non-default tabs and Accordion sections are not analyzed. Moving a component there, even a crowded Record Detail component, takes it out of the initial page load.
The Analyze button in the Lightning App Builder toolbar checks how fast a Lightning record page loads for users and suggests ways to make the page faster. Clicking Analyze runs the Performance Analysis for App Builder check on demand. The same check also runs automatically while you build a page. Admins use the results to find design choices that slow a page down, such as too many components or too many fields.
What the Analyze button checks
Performance Analysis for App Builder runs automatically while you build a page. If the page's performance is poor or moderate, recommendations to improve it appear.
To check a Lightning record page's runtime performance at any time, click Analyze in the Lightning App Builder toolbar. Analyze assesses the page based on all visible standard and custom components on it. Components in non-default tabs and Accordion sections are not analyzed.
The analysis reports page load time as EPT. For desktop, the analysis is measured in seconds. For phone, the page gets a score based on the components visible when it loads on a phone.