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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

1.56S

Cumulative Layout Shift

0.014

Total Blocking Time

2.28S

Largest Contentful Paint (1560ms)

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

200ms
1900ms
2100ms

LCP Event Summary

See full details

Time1560ms
Size57600px²
Typeimage
Element TypeIMG
Srchttps://i.gzn.jp/img/2026/08/28/android-17-encrypted-client-hello/00_m.png
Outer HTML<img src="https://i.gzn.jp/img/2026/08/28/android-17-encrypted-client-hello/00_m.png" id="lz1">...

LCP: 1560 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://gigazine.net/ 2: https://i.gzn.jp/css/common_v5_22.css 3: https://i.gzn.jp/img/gsc/payment/visa.png 4: https://i.gzn.jp/img/-side-ad.js 5: https://i.gzn.jp/img/gsc/payment/master.png 6: https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js 7: https://static.cloudflareinsights.com/beacon.min.js/v3d52b47920f24c319d37e2661827c42b1787588026925 8: https://i.gzn.jp/img/gsc/payment/amex.png 9: https://i.gzn.jp/img/gsc/payment/apple-pay.svg 10: https://i.gzn.jp/img/gsc/payment/g-pay.png 11: https://gigazine.net/gsc/get_sponsors_comment.js 12: https://i.gzn.jp/js/lazysizes.min.js 13: https://i.gzn.jp/img/2026/08/28/android-17-encrypted-client-hello/00_m.png 14: https://i.gzn.jp/img/2026/08/28/cloudflare-dns-cache-optimization/00_m.png 15: https://i.gzn.jp/img/2026/08/28/google-ai-evaluations-secure-environments/00_m.jpg 16: https://i.gzn.jp/js/onesignal.js 17: https://securepubads.g.doubleclick.net/tag/js/gpt.js 18: https://cdn.onesignal.com/sdks/OneSignalSDK.js 19: https://www.googletagmanager.com/gtm.js?id=GTM-WKH2HB8 20: https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202608240101/pubads_impl.js 21: https://c.amazon-adsystem.com/aax2/apstag.js 22: https://www.clarity.ms/tag/6uu7uylb7t?ref=bwt 23: https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js 24: https://i.gzn.jp/images/caticons.png 25: https://mt.gigazine.net/matomo.js loadStarteventUtils: 2.545s loadEndeventUtils: 2.548s loadStartpixelQueue: 2.548s loadEndpixelQueue: 2.549s

LCP Image (BPP: 3.58)

Full LCP Event Information

  • time: 1560
  • size: 57600
  • element:
    • nodeName: IMG
    • boundingRect:
      • x: 15.671875
      • y: 209
      • width: 319.90625
      • height: 179.9375
      • top: 209
      • right: 335.578125
      • bottom: 388.9375
      • left: 15.671875
    • outerHTML: <img src="https://i.gzn.jp/img/2026/08/28/android-17-encrypted-client-hello/00_m.png" id="lz1">
    • src: https://i.gzn.jp/img/2026/08/28/android-17-encrypted-client-hello/00_m.png
    • currentSrc: https://i.gzn.jp/img/2026/08/28/android-17-encrypted-client-hello/00_m.png
    • content: normal
  • type: image
  • url: https://i.gzn.jp/img/2026/08/28/android-17-encrypted-client-hello/00_m.png
  • objectSize: 25726 bytes

Cumulative Layout Shift (0.014)

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

Window 1 (0.014)

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

  • 4365ms (0.01364)

Total Blocking Time (2282 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)
c.amazon-adsystem.com275
image6.pubmatic.com247
static.affiliate.rakuten.co.jp237
pagead2.googlesyndication.com222
www.googletagmanager.com132
connect.facebook.net125
securepubads.g.doubleclick.net112
fundingchoicesmessages.google.com93
scripts.clarity.ms66
www.google-analytics.com8
eus.rubiconproject.com8