Core Web Vitals for SEO
Measure the speed metrics Google uses to rank your site — LCP, FCP, TTFB, and CLS — and get specific fixes to improve them.
- Results in about a minute
- Shareable report link
- Free audits stay free
Everything you need in one report
All Core Web Vitals
LCP, FCP, TTFB, CLS — every metric measured with a real browser, scored against Google's thresholds.
Performance score
Overall performance score based on weighted metrics, matching what Google evaluates for page experience.
Issue identification
See exactly which elements are slow — the specific images, scripts, or fonts causing poor scores.
Actionable fixes
Prioritized recommendations with estimated impact. Not generic advice — specific fixes for your page.
Frequently asked questions
Do Core Web Vitals affect SEO rankings?
Yes. Google uses Core Web Vitals as part of its page experience ranking signals. Pages with good CWV scores have a ranking advantage over pages with poor scores, especially in competitive niches.
What is a good LCP score?
Google considers LCP (Largest Contentful Paint) good when it's under 2.5 seconds, needs improvement between 2.5-4 seconds, and poor above 4 seconds. LCP measures how quickly the main content of your page loads.
What causes poor CLS scores?
Cumulative Layout Shift (CLS) is usually caused by images without dimensions, dynamically injected content, web fonts causing text shifts, or ads that push content down. A good CLS score is under 0.1.
How does page speed affect search traffic?
Studies show that 53% of mobile visitors leave if a page takes over 3 seconds to load. Faster pages get better rankings, higher click-through rates, and lower bounce rates — all of which compound into more search traffic.
Is this Core Web Vitals test free?
Yes. Our Core Web Vitals check is included in every free SEO audit. No signup or payment required — just paste your URL and get results in seconds.
Related articles
URL in. Fix list out.
- 01
Enter your URL
Any public page: your homepage, a product page or a blog post.
$ audit https://yoursite.com - 02
We run 12 checks
Content, technical, security, Core Web Vitals, social tags and links, all in parallel.
checks12 / 12 ✓ - 03
Get your report
Scores, issues ranked by impact and the fix for each one. Share it with a link.
seoutils.dev/audit/…