Source
Crawling & technical audit — found from sitemap — Screaming Frog SEO Spider
Checked for Screaming Frog SEO Spider on 1 Oct 2026
- Page
- https://www.screamingfrog.co.uk/seo-spider/tutorials/how-to-audit-core-web-vitals/
- Checked
- 1 Oct 2026, 13:03 UTC
- How we may use it
- Public page, crawling permitted
Technical details
- type
- page
- http status
- 200
- content hash
- sha256:5f2aff83c34936f87232a66d61876d7d31f271b7e9275a3c61af30301f991df4
- permission
- robots_ok
- screenshot
- Screenshot on file (internal exhibit, not published)
Cited by
Facts read from this source
-
Pagespeed API integration Report an error
“You can use the Screaming Frog SEO Spider and PageSpeed Insights API to easily measure Core Web Vitals (CWVs) for each page on your website.”
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Pagespeed API config path Report an error
“go to ‘Configuration > API Access > PageSpeed Insights’, enter a free PageSpeed Insights API key”
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Cwv thresholds Report an error
“Largest Contentful Paint (LCP): measures loading performance. To provide a good user experience, LCP must occur within 2.5 seconds of when the page first starts loading. Interaction to Next Paint (INP): measures interactivity. To provide a good user experience, pages must have a INP of 200 milliseconds or less. Cumulative Layout Shift (CLS): measures visual stability. To provide a good user experience, must should maintain a CLS of 0.1. or less.”
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Crux data window Report an error
“This CrUX data is based on the last 28 days of user visits to a page.”
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Cwv pass rule Report an error
“For a page to ‘pass’ the Core Web Vital Assessment it must be considered ‘Good’ in all three metrics.”
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Pagespeed tab Report an error
“Click on the PageSpeed Tab as this will show all discovered URLs which have speed data reported from the API”
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Core web vitals assessment column Report an error
“The first column you will find (if enabled) is the ‘Core Web Vitals Assessment’. This will be marked as either a Pass or a Fail depending on whether It is considered Good in all three Web Vitals.”
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Lighthouse insights count Report an error
“A total of 19 page speed insights can be viewed directly in the PageSpeed tab courtesey of Lighthouse”
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Lighthouse details tab Report an error
“If you then highlight one URL and select the lower Lighthouse Details tab, you’ll see more information on the page – including all opportunities for that page, and individual resources for each opportunity”
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Pagespeed bulk export Report an error
“Lastly, you can bulk export opportunity data across the site using the top menu ‘Reports > PageSpeed’ dropdown.”
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Mobile desktop metrics Report an error
“First, select whether you would like either mobile or desktop data.”
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Metrics groups Report an error
“Core Web Vitals can be found under CrUX Metrics, and lab data can be found under Lighthouse Metrics”
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Default metrics selection Report an error
“We recommend using the default selection as this will include data from the CrUX report, lab data from Google Lighthouse, and opportunity data for areas to improve.”
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Lcp opportunity filters Report an error
“LCP Request Discovery – Optimize LCP by making the LCP image discoverable from the HTML immediately, fetchpriority=high should be applied – and avoid lazy-loading.”
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Inp lab data limitation Report an error
“When using lab data, the only metric unavailable is INP (as this requires ‘timespan’ mode and user interaction). Instead, you can substitute this with Total Blocking Time (TBT)”
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Origin data available Report an error
“Origin data is also available, which indicates the average value of a web vital across the domain.”
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Psi quota limit Report an error
“If analysing a large site, you may hit the PSI quota limit.”
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List mode Report an error
“Alternatively, upload a set of URLs to analyse in List mode (Mode > List)”
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Images missing size filter Report an error
“The ‘Missing Size Attributes’ filter from the ‘Images’ tab can also be used to identify possible problem images.”
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Cls opportunity filters Report an error
“Opportunity Filters to view: Layout Shift Culprits Font Display”
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Faqs listed Report an error
“Why Is My PSI Key Invalid? Why Do I Receive An Error Status For The PSI API? Why Do PSI Scores Differ To A Browser? Does The PageSpeed Insights API Affect Analytics?”
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Company details Report an error
“Company no. 07277243 / VAT no. 995 3157 78”
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Address Report an error
“Screaming Frog Ltd 6 Greys Road, Henley-on-Thames, Oxfordshire, RG9 1RY. UK”