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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
3
PASS
11
INFO
2

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

Mobile Desktop
72
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.

2.48 s

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

5.68 s

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

128 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.

4.53 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.

5.70 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
11 PASS 3 REVIEW 1 FIX
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.

B
Third-Party Impact
52% third-party, 0 ms blocking
REVIEW
52% third-party, 0 ms blocking
Warning::
Third-party code accounts for 52% of page weight (153.1 KiB of 291.9 KiB)
Info::
Third-party blocking time is low (0 ms)
48%
52%
First-party Third-party
B
JS Execution Cost
801ms total JS execution
REVIEW
801ms total JS execution
Warning::
https://js-agent.newrelic.com/nr-spa-1.269.0.min.j...: 273ms CPU time
Info::
Unattributable: 161ms CPU time
Info::
https://adsrvr.org/content/scripts/newrelic.js: 140ms CPU time
Info::
https://adsrvr.org/: 124ms CPU time
Info::
https://code.jquery.com/jquery-3.7.1.min.js: 103ms CPU time
Warning::
Third-party scripts: 537ms (67% of total)

Main Thread Breakdown

Script Evaluation 51% Other 28% Style & Layout 11% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
https://js-agent.newrelic.com/nr-spa-1.269.0.min.js273ms244ms22ms3rd
Unattributable161ms8ms0ms3rd
https://adsrvr.org/content/scripts/newrelic.js140ms95ms10ms1st
https://adsrvr.org/124ms5ms1ms1st
https://code.jquery.com/jquery-3.7.1.min.js103ms63ms15ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
292 KB transferred, 14 requests
PASS
292 KB transferred, 14 requests
Info::
Page weighs 426 KB (292 KB transferred)
Info::
14 HTTP requests
Info::
Estimated 0.06 g CO2 per page load
292 KB / 2.4 MB budget
292 KB transferred
14 requests
0.06 g CO2 per page load
JavaScript 122.7 KiB 42%
Images 91.5 KiB 31%
CSS 68.8 KiB 24%
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 91 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
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.js59 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 · 292 KB · 21 KB savings available
PASS
14 resources · 292 KB · 21 KB savings available
Info::
Within 1MB page-weight target
Got: 292 KB
Warning::
7 third-party resources (52% of weight)
14 resources · 291.9 KiB · 7 third-party Within 1MB page-weight target
JavaScript 42% · 122.7 KiB
Image 32% · 92.2 KiB
CSS 24% · 68.8 KiB
Document 2% · 7.2 KiB
Other 0% · 1016 B

~21.1 KiB of savings available

Remove unused JavaScript: 21.1 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
14 requests over 1603ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.5 s LCP 5.7 shttps://adsrvr.org// https://adsrvr.org/ — 200 — 7.2 KiB — 292 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 — 428 ms — h2https://adsrvr.org/content/styles/dataportal.css/content/styles/dataportal.css https://adsrvr.org/content/styles/dataportal.css — 200 — 3.2 KiB — 300 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 — 21 ms — h2https://adsrvr.org/content/scripts/newrelic.js/content/scripts/newrelic.js https://adsrvr.org/content/scripts/newrelic.js — 200 — 58.5 KiB — 381 ms — h2https://adsrvr.org/content/scripts/dataportal.js/content/scripts/dataportal.js https://adsrvr.org/content/scripts/dataportal.js — 200 — 1.2 KiB — 314 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 — 492 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 — 305 ms — h2https://www.thetradedesk.com/assets/general/_800xAUTO_fit_center-center/man-glasses-desktop.jpgwww.thetradedesk.com/assets/general... https://www.thetradedesk.com/assets/general/_800xAUTO_fit_center-center/man-glasses-desktop.jpg — 200 — 86.6 KiB — 80 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 — 29 ms — h2https://adsrvr.org/favicon.ico/favicon.ico https://adsrvr.org/favicon.ico — 403 — 351 B — 285 ms — h2https://bam.nr-data.net/1/ad645dc0c7?a=594525576&sa=1&v=1.269.0&t=Unnamed%20Transaction&rst=943&ck=0&s=dbfa378f636c9a5a&ref=https://adsrvr.org/&ptid=b8e6ed0bb879cf0d&af=err,spa,xhr,stn,ins&be=294&fe=582&dc=492&fsh=1&perf=%7B%22timing%22:%7B%22of%22:1776796563428,%22n%22:0,%22f%22:2,%22dn%22:6,%22dne%22:6,%22c%22:6,%22s%22:7,%22ce%22:14,%22rq%22:14,%22rp%22:294,%22rpe%22:296,%22di%22:785,%22ds%22:785,%22de%22:786,%22dc%22:870,%22l%22:870,%22le%22:876%7D,%22navigation%22:%7B%7D%7Dbam.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=943&ck=0&s=dbfa378f636c9a5a&ref=https://adsrvr.org/&ptid=b8e6ed0bb879cf0d&af=err,spa,xhr,stn,ins&be=294&fe=582&dc=492&fsh=1&perf=%7B%22timing%22:%7B%22of%22:1776796563428,%22n%22:0,%22f%22:2,%22dn%22:6,%22dne%22:6,%22c%22:6,%22s%22:7,%22ce%22:14,%22rq%22:14,%22rp%22:294,%22rpe%22:296,%22di%22:785,%22ds%22:785,%22de%22:786,%22dc%22:870,%22l%22:870,%22le%22:876%7D,%22navigation%22:%7B%7D%7D — 200 — 665 B — 219 ms — http/1.1https://bam.nr-data.net/browser/blobs?browser_monitoring_key=ad645dc0c7&type=BrowserSessionChunk&app_id=594525576&protocol_version=0&timestamp=1776796563485&attributes=entityGuid%3DMzE3OTQzfEJST1dTRVJ8QVBQTElDQVRJT058NTk0NTI1NTc2%26harvestId%3Ddbfa378f636c9a5a_b8e6ed0bb879cf0d_1%26trace.firstTimestamp%3D1776796563485%26trace.lastTimestamp%3D1776796564361%26trace.nodes%3D29%26trace.originTimestamp%3D1776796563485%26agentVersion%3D1.269.0%26firstSessionHarvest%3Dtrue%26ptid%3Db8e6ed0bb879cf0d%26session%3Ddbfa378f636c9a5a%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=1776796563485&attributes=entityGuid%3DMzE3OTQzfEJST1dTRVJ8QVBQTElDQVRJT058NTk0NTI1NTc2%26harvestId%3Ddbfa378f636c9a5a_b8e6ed0bb879cf0d_1%26trace.firstTimestamp%3D1776796563485%26trace.lastTimestamp%3D1776796564361%26trace.nodes%3D29%26trace.originTimestamp%3D1776796563485%26agentVersion%3D1.269.0%26firstSessionHarvest%3Dtrue%26ptid%3Db8e6ed0bb879cf0d%26session%3Ddbfa378f636c9a5a%26currentUrl%3Dhttps://adsrvr.org/ — 200 — 363 B — 208 ms — http/1.1https://bam.nr-data.net/events/1/ad645dc0c7?a=594525576&sa=1&v=1.269.0&t=Unnamed%20Transaction&rst=1395&ck=0&s=dbfa378f636c9a5a&ref=https://adsrvr.org/&ptid=b8e6ed0bb879cf0dbam.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=1395&ck=0&s=dbfa378f636c9a5a&ref=https://adsrvr.org/&ptid=b8e6ed0bb879cf0d — 200 — 363 B — 207 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
67% of JavaScript execution is third-party
First-party Third-party 537ms · 63KB · €6/mo
js-agent.newrelic.com
Other
Costly
Execution 273ms
Transfer 33 KB
Monthly Cost €3/mo
Unattributable
Other
Optional
Execution 161ms
Transfer 0 KB
Monthly Cost €2/mo
code.jquery.com
Other
Optional
Execution 103ms
Transfer 30 KB
Unused 71%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • js-agent.newrelic.com adds 273ms and costs ~€3/month

67% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

js-agent.newrelic.com takes 273ms 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

71% of code.jquery.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

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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