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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
2
REVIEW
1
PASS
10
INFO
2

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

Mobile Desktop
94
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
83
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
82
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.

770 ms

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

1.52 s

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

0 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.

1.03 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.

1.52 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
15
10 PASS 1 REVIEW 2 FIX
D
Third-Party Impact
Action
69% third-party, 0 ms blocking
FIX
69% third-party, 0 ms blocking
Warning::
Third-party code accounts for 69% of page weight (312.5 KiB of 451.2 KiB)
Info::
Third-party blocking time is low (0 ms)
31%
69%
First-party Third-party
D
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.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
451 KB transferred, 14 requests
PASS
451 KB transferred, 14 requests
Info::
Page weighs 586 KB (451 KB transferred)
Info::
14 HTTP requests
Info::
Estimated 0.09 g CO2 per page load
451 KB / 2.4 MB budget
451 KB transferred
14 requests
0.09 g CO2 per page load
Images 250.8 KiB 56%
JavaScript 122.7 KiB 27%
CSS 68.8 KiB 15%
HTML 7.2 KiB 2%
Other 1.4 KiB 0%
Other 351 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
Image Optimization
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 251 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
66ms total JS execution
PASS
66ms total JS execution
Info::
https://js-agent.newrelic.com/nr-spa-1.269.0.min.j...: 66ms CPU time
Warning::
Third-party scripts: 66ms (100% of total)

Main Thread Breakdown

Script Evaluation 51% Other 29% Style & Layout 10% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
https://js-agent.newrelic.com/nr-spa-1.269.0.min.js66ms59ms5ms3rd
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
4 scripts, 21 KB unused
PASS
4 scripts, 21 KB unused
Warning::
https://code.jquery.com/jquery-3.7.1.min.js: 21 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 21 KB
21 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://code.jquery.com/jquery-3.7.1.min.js30 KB21 KB (71%)✓3rd
https://adsrvr.org/content/scripts/newrelic.js58 KB—✓1st
https://adsrvr.org/content/scripts/dataportal.js1 KB—✓1st
https://js-agent.newrelic.com/nr-spa-1.269.0.min.js33 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

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
14 resources · 451 KB · 21 KB savings available
PASS
14 resources · 451 KB · 21 KB savings available
Info::
Within 1MB page-weight target
Got: 451 KB
Warning::
7 third-party resources (69% of weight)
Info::
1 resources over 200KB
14 resources · 451.2 KiB · 7 third-party Within 1MB page-weight target
Image 56% · 251.6 KiB
JavaScript 27% · 122.7 KiB
CSS 15% · 68.8 KiB
Document 2% · 7.2 KiB
Other 0% · 1016 B

~21.1 KiB of savings available

Remove unused JavaScript: 21.1 KiB
Network Waterfall
14 requests over 1524ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 770 ms LCP 1.5 shttps://adsrvr.org// https://adsrvr.org/ — 200 — 7.2 KiB — 310 ms — h2https://adsrvr.org/content/styles/ttd-website.css/content/styles/ttd-website.css https://adsrvr.org/content/styles/ttd-website.css — 200 — 65.5 KiB — 298 ms — h2https://adsrvr.org/content/styles/dataportal.css/content/styles/dataportal.css https://adsrvr.org/content/styles/dataportal.css — 200 — 3.2 KiB — 286 ms — h2https://code.jquery.com/jquery-3.7.1.min.jscode.jquery.com/jquery-3.7.1.min.js https://code.jquery.com/jquery-3.7.1.min.js — 200 — 30.0 KiB — 25 ms — h2https://adsrvr.org/content/scripts/newrelic.js/content/scripts/newrelic.js https://adsrvr.org/content/scripts/newrelic.js — 200 — 58.5 KiB — 303 ms — h2https://adsrvr.org/content/scripts/dataportal.js/content/scripts/dataportal.js https://adsrvr.org/content/scripts/dataportal.js — 200 — 1.2 KiB — 305 ms — h2https://www.thetradedesk.com/assets/global/ttd-logo.svgwww.thetradedesk.com/assets/global/... https://www.thetradedesk.com/assets/global/ttd-logo.svg — 200 — 2.2 KiB — 736 ms — h2https://adsrvr.org/content/images/info_blue.png/content/images/info_blue.png https://adsrvr.org/content/images/info_blue.png — 200 — 2.7 KiB — 293 ms — h2https://www.thetradedesk.com/assets/general/_1900xAUTO_fit_center-center_75/man-glasses-desktop.jpgwww.thetradedesk.com/assets/general... https://www.thetradedesk.com/assets/general/_1900xAUTO_fit_center-center_75/man-glasses-desktop.jpg — 200 — 246.0 KiB — 409 ms — h2https://js-agent.newrelic.com/nr-spa-1.269.0.min.jsjs-agent.newrelic.com/nr-spa-1.269.... https://js-agent.newrelic.com/nr-spa-1.269.0.min.js — 200 — 33.0 KiB — 19 ms — h2https://adsrvr.org/favicon.ico/favicon.ico https://adsrvr.org/favicon.ico — 403 — 351 B — 101 ms — h2https://bam.nr-data.net/1/ad645dc0c7?a=594525576&sa=1&v=1.269.0&t=Unnamed%20Transaction&rst=1157&ck=0&s=3c577d6165946092&ref=https://adsrvr.org/&ptid=43f9a44c0fdd2756&af=err,spa,xhr,stn,ins&be=311&fe=784&dc=389&fsh=1&perf=%7B%22timing%22:%7B%22of%22:1776796579828,%22n%22:0,%22f%22:3,%22dn%22:5,%22dne%22:5,%22c%22:5,%22s%22:6,%22ce%22:18,%22rq%22:19,%22rp%22:312,%22rpe%22:315,%22di%22:699,%22ds%22:699,%22de%22:700,%22dc%22:1089,%22l%22:1089,%22le%22:1095%7D,%22navigation%22:%7B%7D%7D&fp=748&fcp=748bam.nr-data.net/1/ad645dc0c7?a=5945... https://bam.nr-data.net/1/ad645dc0c7?a=594525576&sa=1&v=1.269.0&t=Unnamed%20Transaction&rst=1157&ck=0&s=3c577d6165946092&ref=https://adsrvr.org/&ptid=43f9a44c0fdd2756&af=err,spa,xhr,stn,ins&be=311&fe=784&dc=389&fsh=1&perf=%7B%22timing%22:%7B%22of%22:1776796579828,%22n%22:0,%22f%22:3,%22dn%22:5,%22dne%22:5,%22c%22:5,%22s%22:6,%22ce%22:18,%22rq%22:19,%22rp%22:312,%22rpe%22:315,%22di%22:699,%22ds%22:699,%22de%22:700,%22dc%22:1089,%22l%22:1089,%22le%22:1095%7D,%22navigation%22:%7B%7D%7D&fp=748&fcp=748 — 200 — 665 B — 123 ms — http/1.1https://bam.nr-data.net/browser/blobs?browser_monitoring_key=ad645dc0c7&type=BrowserSessionChunk&app_id=594525576&protocol_version=0&timestamp=1776796579836&attributes=entityGuid%3DMzE3OTQzfEJST1dTRVJ8QVBQTElDQVRJT058NTk0NTI1NTc2%26harvestId%3D3c577d6165946092_43f9a44c0fdd2756_1%26trace.firstTimestamp%3D1776796579836%26trace.lastTimestamp%3D1776796580931%26trace.nodes%3D29%26trace.originTimestamp%3D1776796579836%26agentVersion%3D1.269.0%26firstSessionHarvest%3Dtrue%26ptid%3D43f9a44c0fdd2756%26session%3D3c577d6165946092%26currentUrl%3Dhttps://adsrvr.org/bam.nr-data.net/browser/blobs?brows... https://bam.nr-data.net/browser/blobs?browser_monitoring_key=ad645dc0c7&type=BrowserSessionChunk&app_id=594525576&protocol_version=0&timestamp=1776796579836&attributes=entityGuid%3DMzE3OTQzfEJST1dTRVJ8QVBQTElDQVRJT058NTk0NTI1NTc2%26harvestId%3D3c577d6165946092_43f9a44c0fdd2756_1%26trace.firstTimestamp%3D1776796579836%26trace.lastTimestamp%3D1776796580931%26trace.nodes%3D29%26trace.originTimestamp%3D1776796579836%26agentVersion%3D1.269.0%26firstSessionHarvest%3Dtrue%26ptid%3D43f9a44c0fdd2756%26session%3D3c577d6165946092%26currentUrl%3Dhttps://adsrvr.org/ — 200 — 363 B — 112 ms — http/1.1https://bam.nr-data.net/events/1/ad645dc0c7?a=594525576&sa=1&v=1.269.0&t=Unnamed%20Transaction&rst=1414&ck=0&s=3c577d6165946092&ref=https://adsrvr.org/&ptid=43f9a44c0fdd2756bam.nr-data.net/events/1/ad645dc0c7... https://bam.nr-data.net/events/1/ad645dc0c7?a=594525576&sa=1&v=1.269.0&t=Unnamed%20Transaction&rst=1414&ck=0&s=3c577d6165946092&ref=https://adsrvr.org/&ptid=43f9a44c0fdd2756 — 200 — 363 B — 111 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 66ms · 33KB · €1/mo
js-agent.newrelic.com
Other
Optional
Execution 66ms
Transfer 33 KB
Monthly Cost €1/mo

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

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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