Menu:

Webpage Performance Test Result

Screenshot

View:

Tools:

Export

Core Web Vitals

This page details results from metrics that Google has deemed Core Web Vitals . For more information about these metrics and their significance, check out our Core Web Vitals Guide.

Observed Web Vitals Metrics (Collected in this WPT test run)

Largest Contentful Paint

3.28S

Cumulative Layout Shift

0.102

Total Blocking Time

2.90S

Largest Contentful Paint (3275ms)

View as Filmstrip - View Video - About Largest Contentful Paint (LCP)

3000ms
3500ms
6200ms

LCP Event Summary

See full details

Time3275ms
Size201712px²
Typeimage
Element TypeVIDEO
SrcNo Poster Image
Outer HTML<video id="hero-video" playsinline="playsinline" autoplay="" muted=""> <source src="/_resources/video/2026-HOMEPAGE-VIDEO-030526.mp4" type="video/mp4"> Your browser does not support the video tag. </video>...

LCP: 3275 ms

Start Render
First Contentful Paint
Largest Contentful Paint
Layout Shift
DOM Interactive
DOM Content Loaded
On Load
Document Complete
Render Blocking Resource Insecure Request 3xx response4xx+ response
 Doesn't Belong to Main Doc 
Step_1 1: https://www.stonybrook.edu/ 2: https://www.stonybrook.edu/_resources/images/sb-logo-desktop-new.svg 3: https://www.stonybrook.edu/_resources/images/megamenu-about.jpg 4: https://fonts.googleapis.com/css2?family=Alumni+Sans:wght@400;500;600;700;800&family=Barlow:wght@400;500;600;700&family=Barlow+Semi+Condensed:wght@400;500;600;700&family=Bitter:wght@400;600;700&display=swap 5: https://code.jquery.com/jquery-3.7.1.min.js 6: https://stonybrook.edu/_resources/css/sb-main.css?v=5.1 7: https://stonybrook.edu/_resources/css/mcstyles.css?v=4 8: https://www.stonybrook.edu/_resources/css/sb-main.css?v=5.1 9: https://www.stonybrook.edu/_resources/css/mcstyles.css?v=4 10: https://www.stonybrook.edu/_resources/images/megamenu-admissions.jpg 11: https://www.stonybrook.edu/_resources/images/megamenu-academics.jpg 12: https://www.stonybrook.edu/_resources/images/megamenu-campus-life.jpg 13: https://code.jquery.com/jquery-3.6.0.min.js 14: https://www.stonybrook.edu/_resources/images/megamenu-research.jpg 15: https://www.stonybrook.edu/_resources/images/sb-logo-mobile-new.svg 16: https://www.stonybrook.edu/_resources/images/logins-icon.svg 17: https://www.stonybrook.edu/_resources/images/sb-logo-sticky-new.svg 18: https://www.stonybrook.edu/_resources/images/hero-prisms-v2-01.svg 19: https://www.stonybrook.edu/_resources/images/hp-hero-tablet-12.08.25.jpg 20: https://www.stonybrook.edu/_news-images/first-light-ceremony-hero.jpg 21: https://www.stonybrook.edu/_news-images/meet-the-presidents-26-grid.jpg 22: https://www.stonybrook.edu/_news-images/new-student-26-grid.jpg 23: https://www.stonybrook.edu/_news-images/community-service-day-2026-grid.jpg 24: https://www.stonybrook.edu/_news-images/nicholson-harrison-grid.jpg 25: https://www.stonybrook.edu/_resources/images/girl-playing-flute.png 26: https://www.stonybrook.edu/_resources/images/cheerleaders-celebrating.png 27: https://www.stonybrook.edu/_resources/images/students-locking-bike.png 28: https://www.stonybrook.edu/_resources/images/students-in-lab.png 29: https://www.stonybrook.edu/_resources/images/path-female-student-in-lab.png 30: https://www.stonybrook.edu/_resources/images/path-3-students-collaborating.png 31: https://www.stonybrook.edu/_resources/images/path-student-at-laptop.png 32: https://www.stonybrook.edu/_resources/images/circle-button-student-life.jpg 33: https://www.stonybrook.edu/_resources/images/circle-button-arts-culture.jpg 34: https://www.stonybrook.edu/_resources/images/circle-button-health-safety.jpg 35: https://www.stonybrook.edu/_resources/images/circle-button-student-involvement.jpg 36: https://stonybrook.edu/_resources/images/campus-life-arrow.svg 37: https://www.stonybrook.edu/_resources/images/sb-logo-footer-new.svg 38: https://stonybrook.edu/_resources/js/bootstrap.bundle.min.js 39: https://stonybrook.edu/_resources/js/sb-main.js 40: https://stonybrook.edu/_resources/js/sb-animations.js 41: https://stonybrook.edu/_resources/js/vendor/slick.min.js 42: https://stonybrook.edu/_resources/js/sb-homepage-hero.js 43: https://www.googletagmanager.com/gtm.js?id=GTM-P43R9T&gtm_auth=jCHsNovKQBjtTL9y_RXzMQ&gtm_preview=env-1&gtm_cookies_win=x 44: https://analytics.silktide.com/8aa6a37b1e0187f3c8ebea37df3242ab.js 45: https://fonts.gstatic.com/s/bitter/v42/rax8HiqOu8IVPmn7f4xp.woff2 46: https://fonts.gstatic.com/s/barlowsemicondensed/v16/wlpvgxjLBV1hqnzfr-F8sEYMB0Yybp0mudRXeIqq.woff2 47: https://fonts.gstatic.com/s/alumnisans/v20/nwpQtKqkOwdO2aOIwhWudG-l7w0.woff2 48: https://fonts.gstatic.com/s/barlowsemicondensed/v16/wlpigxjLBV1hqnzfr-F8sEYMB0Yybp0mudRfi6m_B2sl.woff2 49: https://fonts.gstatic.com/s/barlow/v13/7cHpv4kjgoGqM7E_DMs5.woff2 50: https://fonts.gstatic.com/s/barlow/v13/7cHqv4kjgoGqM7E30-8s51os.woff2 51: https://www.stonybrook.edu/_resources/images/campus-life-arrow.svg 52: https://www.stonybrook.edu/_resources/js/bootstrap.bundle.min.js 53: https://www.stonybrook.edu/_resources/js/sb-main.js 54: https://www.stonybrook.edu/_resources/js/sb-animations.js 55: https://www.stonybrook.edu/_resources/js/sb-homepage-hero.js 56: https://www.stonybrook.edu/_resources/js/vendor/slick.min.js 57: https://www.stonybrook.edu/_resources/images/path-arrow.svg 58: https://www.stonybrook.edu/_resources/images/hp-calendar-bg.png 59: https://www.stonybrook.edu/_resources/video/2026-HOMEPAGE-VIDEO-030526.mp4 60: https://fonts.gstatic.com/s/barlowsemicondensed/v16/wlpigxjLBV1hqnzfr-F8sEYMB0Yybp0mudRfw6-_B2sl.woff2 61: https://www.stonybrook.edu/_resources/images/slider-image-twice-up-adita.jpg 62: https://www.stonybrook.edu/_resources/images/slider-image-twice-up-laci.jpg 63: https://www.stonybrook.edu/_resources/images/slider-image-twice-up-jabe.jpg 64: https://www.stonybrook.edu/_resources/css/ajax-loader.gif 65: https://www.stonybrook.edu/_resources/images/hp-carousel-chevron-left.svg 66: https://www.stonybrook.edu/_resources/images/hp-carousel-chevron-right.svg 67: https://www.googletagmanager.com/gtag/js?id=AW-17129731817&cx=c&gtm=4e68q1h1 68: https://www.googletagmanager.com/gtag/js?id=G-8YXBWVVFPX&cx=c&gtm=4e68q1h1 69: https://www.googletagmanager.com/gtag/js?id=AW-861933723 70: https://analytics.silktide.com/82511b81c25af49065d17e4e6d0807fa.js

LCP Image

Full LCP Event Information

  • time: 3275
  • size: 201712
  • element:
    • nodeName: VIDEO
    • boundingRect:
      • x: 0
      • y: 228
      • width: 1351
      • height: 1028
      • top: 228
      • right: 1351
      • bottom: 1256
      • left: 0
    • outerHTML: <video id="hero-video" playsinline="playsinline" autoplay="" muted=""> <source src="/_resources/video/2026-HOMEPAGE-VIDEO-030526.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
    • currentSrc: https://www.stonybrook.edu/_resources/video/2026-HOMEPAGE-VIDEO-030526.mp4
    • content: normal
  • type: image
  • url: https://www.stonybrook.edu/_resources/video/2026-HOMEPAGE-VIDEO-030526.mp4

Cumulative Layout Shift (0.102)

View as Filmstrip - View Video - About Cumulative Layout Shift (CLS)

Window 1 (0.102)

Hover over any image to see the previous frame and the effect of the layout shift.

  • 2130ms (0.10245)

Total Blocking Time (2903 ms)

About Total Blocking Time (TBT)


View in Chrome Dev Tools Performance Panel

Main Thread Blocking Time by Script Origin

Script Origin Blocking Time (ms)
www.googletagmanager.com1454
connect.facebook.net324
analytics.tiktok.com318
stonybrook.edu11