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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
3
PASS
10
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
61
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
87
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

6.08 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

6.99 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

12 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

6.08 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

6.99 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
10 PASS 3 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (141.7 KiB of 141.8 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
7 images, 0 KB saveable
REVIEW
7 images, 0 KB saveable
Warning::
https://s.yimg.com/rz/p/yahoo_frontpage_en-US_s_f_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
7 images 42 KB
0 oversized -0 KB
7 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
JS Execution Cost
649ms total JS execution
REVIEW
649ms total JS execution
Warning::
https://consent.yahoo.com/v2/collectConsent?sessio...: 330ms CPU time
Info::
Unattributable: 249ms CPU time
Info::
https://s.yimg.com/oa/build/js/site-b61979ba.js: 69ms CPU time
Warning::
Third-party scripts: 649ms (100% of total)

Main Thread Breakdown

Other 43% Script Evaluation 21% Style & Layout 18% Parse HTML & CSS 10% Script Parsing & Compilation 5% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://consent.yahoo.com/v2/collectConsent?sessionId=3_cc-session_dc115df2-2017-4873-9e45-1bd21bb218f1330ms85ms4ms3rd
Unattributable249ms10ms0ms3rd
https://s.yimg.com/oa/build/js/site-b61979ba.js69ms38ms20ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
142 KB transferred, 19 requests
PASS
142 KB transferred, 19 requests
Info::
Page weighs 546 KB (142 KB transferred)
Info::
19 HTTP requests
Info::
Estimated 0.03 g CO2 per page load
142 KB / 2.4 MB budget
142 KB transferred
19 requests
0.03 g CO2 per page load
Images 42.0 KiB 30%
JavaScript 40.7 KiB 29%
CSS 39.3 KiB 28%
HTML 15.5 KiB 11%
Other 3.8 KiB 3%
Other 365 B 0%
Other 142 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A
JS Bundles
2 scripts, 0 KB unused
PASS
2 scripts, 0 KB unused
Warning::
https://s.yimg.com/oa/build/js/site-b61979ba.js: unminified — 8 KB could be saved
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://s.yimg.com/oa/build/js/site-b61979ba.js22 KB—✗3rd
https://s.yimg.com/ss/rapid-3.53.30.js18 KB—✓3rd
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
Page Weight Inventory
19 resources · 142 KB · 0 KB savings available
PASS
19 resources · 142 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 142 KB
Warning::
18 third-party resources (100% of weight)
19 resources · 141.8 KiB · 18 third-party Within 1MB page-weight target
Image 31% · 43.9 KiB
JavaScript 29% · 40.7 KiB
CSS 28% · 39.3 KiB
Document 11% · 16.2 KiB
Other 1% · 1.6 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
19 requests over 1800ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 6.1 s LCP 7.0 shttps://att.net// https://att.net/ — 301 — 124 B — 523 ms — http/1.0https://www.att.net/www.att.net/ https://www.att.net/ — 301 — 315 B — 152 ms — http/1.1https://start.att.net/start.att.net/ https://start.att.net/ — 302 — 390 B — 567 ms — http/1.1https://currently.att.yahoo.com/currently.att.yahoo.com/ https://currently.att.yahoo.com/ — 307 — 752 B — 20 ms — http/1.1https://guce.yahoo.com/consent?brandType=nonEu&gcrumb=NvuK_R0&done=https%3A%2F%2Fcurrently.att.yahoo.com%2Fguce.yahoo.com/consent?brandType=no... https://guce.yahoo.com/consent?brandType=nonEu&gcrumb=NvuK_R0&done=https%3A%2F%2Fcurrently.att.yahoo.com%2F — 302 — 295 B — 138 ms — http/1.1https://consent.yahoo.com/v2/collectConsent?sessionId=3_cc-session_dc115df2-2017-4873-9e45-1bd21bb218f1consent.yahoo.com/v2/collectConsent... https://consent.yahoo.com/v2/collectConsent?sessionId=3_cc-session_dc115df2-2017-4873-9e45-1bd21bb218f1 — 200 — 15.5 KiB — 157 ms — http/1.1https://s.yimg.com/oa/build/css/site-ltr-281e5c2a.csss.yimg.com/oa/build/css/site-ltr-28... https://s.yimg.com/oa/build/css/site-ltr-281e5c2a.css — 200 — 39.3 KiB — 37 ms — http/1.1https://s.yimg.com/rz/p/yahoo_frontpage_en-US_s_f_p_bestfit_frontpage_2x.pngs.yimg.com/rz/p/yahoo_frontpage_en-... https://s.yimg.com/rz/p/yahoo_frontpage_en-US_s_f_p_bestfit_frontpage_2x.png — 200 — 2.0 KiB — 35 ms — http/1.1https://s.yimg.com/rz/p/yahoo_frontpage_en-US_s_f_w_bestfit_frontpage_2x.pngs.yimg.com/rz/p/yahoo_frontpage_en-... https://s.yimg.com/rz/p/yahoo_frontpage_en-US_s_f_w_bestfit_frontpage_2x.png — 200 — 2.0 KiB — 32 ms — http/1.1https://consent.yahoo.com/static/images/close.svgconsent.yahoo.com/static/images/clo... https://consent.yahoo.com/static/images/close.svg — 200 — 1003 B — 33 ms — http/1.1https://s.yimg.com/oa/build/js/site-b61979ba.jss.yimg.com/oa/build/js/site-b61979b... https://s.yimg.com/oa/build/js/site-b61979ba.js — 200 — 22.5 KiB — 25 ms — http/1.1https://s.yimg.com/ss/rapid-3.53.30.jss.yimg.com/ss/rapid-3.53.30.js https://s.yimg.com/ss/rapid-3.53.30.js — 200 — 18.2 KiB — 26 ms — http/1.1https://consent.yahoo.com/beacon?tag=TCF2&step=Layer1-View&brandDomain=currently.att.yahoo.com&brandBid=&userType=nonreg&sdk=false&tos=nl-NL&country=NL&x=&sessionId=3_cc-session_dc115df2-2017-4873-9e45-1bd21bb218f1consent.yahoo.com/beacon?tag=TCF2&s... https://consent.yahoo.com/beacon?tag=TCF2&step=Layer1-View&brandDomain=currently.att.yahoo.com&brandBid=&userType=nonreg&sdk=false&tos=nl-NL&country=NL&x=&sessionId=3_cc-session_dc115df2-2017-4873-9e45-1bd21bb218f1 — 204 — 142 B — 64 ms — http/1.1https://s.yimg.com/oa/build/images/en-GB-mobile_d863511e7a17d5d8.jpegs.yimg.com/oa/build/images/en-GB-mo... https://s.yimg.com/oa/build/images/en-GB-mobile_d863511e7a17d5d8.jpeg — 200 — 33.8 KiB — 8 ms — http/1.1https://s.yimg.com/oa/build/images/help-circle-solid-black_f68609a66d5b78e7.svgs.yimg.com/oa/build/images/help-cir... https://s.yimg.com/oa/build/images/help-circle-solid-black_f68609a66d5b78e7.svg — 200 — 1.9 KiB — 4 ms — http/1.1https://udc.yahoo.com/v2/public/yql?yhlVer=2&yhlClient=rapid&yhlS=1197812781&yhlCT=2&yhlBTMS=1776362611821&yhlClientVer=3.53.30&yhlRnd=ZmUz7gaOKEhLvA1U&yhlCompressed=0udc.yahoo.com/v2/public/yql?yhlVer=... https://udc.yahoo.com/v2/public/yql?yhlVer=2&yhlClient=rapid&yhlS=1197812781&yhlCT=2&yhlBTMS=1776362611821&yhlClientVer=3.53.30&yhlRnd=ZmUz7gaOKEhLvA1U&yhlCompressed=0 — 204 — 365 B — 81 ms — h2https://consent.yahoo.com/beacon?tag=TCF2&step=Layer1-View-Js&brandDomain=currently.att.yahoo.com&brandBid=&userType=nonreg&sdk=false&tos=nl-NL&country=NL&x=&sessionId=3_cc-session_dc115df2-2017-4873-9e45-1bd21bb218f1consent.yahoo.com/beacon?tag=TCF2&s... https://consent.yahoo.com/beacon?tag=TCF2&step=Layer1-View-Js&brandDomain=currently.att.yahoo.com&brandBid=&userType=nonreg&sdk=false&tos=nl-NL&country=NL&x=&sessionId=3_cc-session_dc115df2-2017-4873-9e45-1bd21bb218f1 — 204 — 142 B — 34 ms — http/1.1https://s.yimg.com/oa/build/images/scroll-arrow-2x_673d08f24769fbac.pngs.yimg.com/oa/build/images/scroll-a... https://s.yimg.com/oa/build/images/scroll-arrow-2x_673d08f24769fbac.png — 200 — 1.2 KiB — 5 ms — http/1.1https://s.yimg.com/oa/build/images/favicons/yahoo.pngs.yimg.com/oa/build/images/favicons... https://s.yimg.com/oa/build/images/favicons/yahoo.png — 200 — 2.0 KiB — 5 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 649ms · 38KB · $9/mo
consent.yahoo.com
Other
Costly
Execution 330ms
Transfer 15 KB
Monthly Cost $4/mo
Unattributable
Other
Costly
Execution 249ms
Transfer 0 KB
Monthly Cost $3/mo
s.yimg.com
Other
Optional
Execution 69ms
Transfer 22 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • consent.yahoo.com adds 330ms and costs ~$4/month
  • Unattributable adds 249ms and costs ~$3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

consent.yahoo.com takes 330ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 249ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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