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Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
3
REVIEW
5
PASS
15
INFO
2

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

55
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
50
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.

5.24 s

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

8.77 s

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

304 ms

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

0.007

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

5.24 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.

8.77 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
25
15 PASS 5 REVIEW 3 FIX
D
JS Execution Cost
Action
2297ms total JS execution
FIX
2297ms total JS execution
Warning::
https://pagead2.googlesyndication.com/pagead/manag...: 779ms CPU time
Warning::
https://www.pearreview.com/: 476ms CPU time
Warning::
Unattributable: 445ms CPU time
Warning::
https://pagead2.googlesyndication.com/pagead/js/ad...: 302ms CPU time
Info::
https://www.pearreview.com/sites/all/themes/PearRe...: 120ms CPU time
Info::
Third-party scripts: 1148ms (50% of total)

Main Thread Breakdown

Script Evaluation 48% Other 25% Style & Layout 12% Script Parsing & Compilation 10%
ScriptTotalScriptingParse/CompileParty
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202608200101/show_ads_impl_fy2021.js?bust=122880588779ms628ms126ms3rd
https://www.pearreview.com/476ms12ms6ms1st
Unattributable445ms11ms0ms1st
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1502173011299631302ms215ms73ms3rd
https://www.pearreview.com/sites/all/themes/PearReview/js/jquery-G.js120ms90ms14ms1st
https://ep2.adtrafficquality.google/sodar/sodar2.js66ms58ms4ms3rd
https://www.pearreview.com/misc/jquery-G.js56ms50ms5ms1st
https://www.pearreview.com/misc/drupal-G.js53ms46ms2ms1st
D
JS Bundles
Action
11 scripts, 160 KB unused
FIX
11 scripts, 160 KB unused
Warning::
https://pagead2.googlesyndication.com/pagead/manag...: 110 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://pagead2.googlesyndication.com/pagead/js/ad...: 27 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.pearreview.com/sites/all/themes/PearRe...: 23 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.pearreview.com/sites/all/themes/PearRe...: unminified — 14 KB could be saved
Warning::
https://www.pearreview.com/misc/drupal-G.js: unminified — 2 KB could be saved
Info::
Total unused JavaScript: 160 KB
160 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202608200101/show_ads_impl_fy2021.js?bust=122880588162 KB110 KB (68%)3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-150217301129963156 KB27 KB (48%)3rd
https://www.pearreview.com/sites/all/themes/PearReview/js/jquery-G.js37 KB23 KB (63%)1st
https://www.pearreview.com/misc/jquery-G.js17 KB1st
https://www.pearreview.com/misc/drupal-G.js4 KB1st
https://www.pearreview.com/sites/default/files/languages/de_1ad018fc22722f19c63dba9334d35589-G.js2 KB1st
https://www.pearreview.com/sites/all/themes/PearReview/js/jquery.lightbox-0.5-G.js6 KB1st
https://www.pearreview.com/sites/all/themes/PearReview/js/jquery.color-G.js2 KB1st
https://static.cloudflareinsights.com/beacon.min.js/v4513226cdae34746b4dedf0b4dfa099e178179150949611 KB3rd
https://ep2.adtrafficquality.google/sodar/sodar2.js8 KB3rd

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

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

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

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.
Info::
Last-Modified header present

No Cache-Control header

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

B
Third-Party Impact
55% third-party, 0 ms blocking
REVIEW
55% third-party, 0 ms blocking
Warning::
Third-party code accounts for 55% of page weight (344.4 KiB of 627.4 KiB)
Info::
Third-party blocking time is low (0 ms)
45%
55%
First-party Third-party
B
Image Optimization
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Info::
All images are well-optimized
11 images 188 KB
0 oversized -0 KB
11 legacy format
0 missing dimensions CLS risk
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
JavaScript Blocking
1 JS blocking issue(s) detected
REVIEW
1 JS blocking issue(s) detected
Warning::
9 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
627 KB transferred, 50 requests
PASS
627 KB transferred, 50 requests
Info::
Page weighs 1.3 MB (627 KB transferred)
Info::
50 HTTP requests
Info::
Estimated 0.13 g CO2 per page load
627 KB / 2.4 MB budget
627 KB transferred
50 requests
0.13 g CO2 per page load
JavaScript 326.7 KiB 52%
Images 187.9 KiB 30%
Fonts 43.8 KiB 7%
HTML 28.5 KiB 5%
CSS 26.7 KiB 4%
Other 13.7 KiB 2%
Other 20 B 0%
Other 0 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
2 fonts (44 KB)
PASS
2 fonts (44 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

44 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 5.2 s LCP 8.8 shttps://fonts.gstatic.com/s/googlesans/v70/4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrzjJ5llpynAESo4.woff24Ua_rENHsxJlGDuGo1OIlJf... https://fonts.gstatic.com/s/googlesans/v70/4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrzjJ5llpynAESo4.woff2 — 22.4 KiB — 52 ms — font-display: swaphttps://fonts.gstatic.com/s/googlesans/v70/4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpynAESo4.woff24Ua_rENHsxJlGDuGo1OIlJf... https://fonts.gstatic.com/s/googlesans/v70/4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpynAESo4.woff2 — 21.5 KiB — 45 ms — font-display: swap
4Ua_rENHsxJlGDuGo1OIlJf... woff2 swap
Size 22 KB
Load time 52 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
4Ua_rENHsxJlGDuGo1OIlJf... woff2 swap
Size 21 KB
Load time 45 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
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+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server-Timing Observability
3 Server-Timing entries advertised
PASS
3 Server-Timing entries advertised
Info::
Server-Timing header advertises 3 timing entries
A
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
`Last-Modified` present -- timestamp-based conditional GET supported
Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.
A
Page Weight Inventory
50 resources · 627 KB · 160 KB savings available
PASS
50 resources · 627 KB · 160 KB savings available
Info::
Within 1MB page-weight target
Got: 627 KB
Info::
~160 KB of savings available
Warning::
19 third-party resources (55% of weight)
50 resources · 627.4 KiB · 19 third-party Within 1MB page-weight target
JavaScript 52% · 326.7 KiB
Image 30% · 187.9 KiB
Font 7% · 43.8 KiB
Document 5% · 28.5 KiB
CSS 4% · 26.7 KiB
Other 2% · 13.7 KiB

~159.7 KiB of savings available

Remove unused JavaScript: 159.7 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
A
CSS Performance Depth
1 CSS depth issue(s) detected
PASS
1 CSS depth issue(s) detected
Warning::
17 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Network Waterfall
50 requests over 3230ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 5.2 s LCP 8.8 shttps://www.pearreview.com// https://www.pearreview.com/ — 200 — 5.2 KiB — 346 ms — h3https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1502173011299631pagead2.googlesyndication.com/pagea... https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1502173011299631 — 200 — 55.8 KiB — 66 ms — h3https://www.pearreview.com/modules/node/node-G.css/modules/node/node-G.css https://www.pearreview.com/modules/node/node-G.css — 200 — 849 B — 477 ms — h3https://www.pearreview.com/modules/poll/poll-G.css/modules/poll/poll-G.css https://www.pearreview.com/modules/poll/poll-G.css — 200 — 813 B — 483 ms — h3https://www.pearreview.com/modules/system/defaults-G.css/modules/system/defaults-G.css https://www.pearreview.com/modules/system/defaults-G.css — 200 — 919 B — 523 ms — h3https://www.pearreview.com/modules/system/system-G.css/modules/system/system-G.css https://www.pearreview.com/modules/system/system-G.css — 200 — 3.5 KiB — 628 ms — h3https://www.pearreview.com/modules/system/system-menus-G.css/modules/system/system-menus-G.css https://www.pearreview.com/modules/system/system-menus-G.css — 200 — 872 B — 478 ms — h3https://www.pearreview.com/modules/user/user-G.css/modules/user/user-G.css https://www.pearreview.com/modules/user/user-G.css — 200 — 989 B — 492 ms — h3https://www.pearreview.com/sites/all/themes/zen/zen/tabs-G.css/sites/all/themes/zen/zen/tabs-G.cs... https://www.pearreview.com/sites/all/themes/zen/zen/tabs-G.css — 200 — 1.3 KiB — 482 ms — h3https://www.pearreview.com/sites/all/themes/PearReview/messages-G.css/sites/all/themes/PearReview/messag... https://www.pearreview.com/sites/all/themes/PearReview/messages-G.css — 200 — 1016 B — 500 ms — h3https://www.pearreview.com/sites/all/themes/zen/zen/block-editing-G.css/sites/all/themes/zen/zen/block-edi... https://www.pearreview.com/sites/all/themes/zen/zen/block-editing-G.css — 200 — 753 B — 484 ms — h3https://www.pearreview.com/sites/all/themes/zen/zen/wireframes-G.css/sites/all/themes/zen/zen/wireframe... https://www.pearreview.com/sites/all/themes/zen/zen/wireframes-G.css — 200 — 752 B — 473 ms — h3https://www.pearreview.com/sites/all/themes/PearReview/zen-G.css/sites/all/themes/PearReview/zen-G.... https://www.pearreview.com/sites/all/themes/PearReview/zen-G.css — 200 — 1.1 KiB — 513 ms — h3https://www.pearreview.com/sites/all/themes/PearReview/layout-fixed-G.css/sites/all/themes/PearReview/layout... https://www.pearreview.com/sites/all/themes/PearReview/layout-fixed-G.css — 200 — 2.4 KiB — 486 ms — h3https://www.pearreview.com/sites/all/themes/PearReview/style-G.css/sites/all/themes/PearReview/style-... https://www.pearreview.com/sites/all/themes/PearReview/style-G.css — 200 — 6.0 KiB — 644 ms — h3https://www.pearreview.com/sites/all/themes/PearReview/jquery.lightbox-0.5-G.css/sites/all/themes/PearReview/jquery... https://www.pearreview.com/sites/all/themes/PearReview/jquery.lightbox-0.5-G.css — 200 — 1.4 KiB — 509 ms — h3https://www.pearreview.com/misc/jquery-G.js/misc/jquery-G.js https://www.pearreview.com/misc/jquery-G.js — 200 — 16.8 KiB — 670 ms — h3https://www.pearreview.com/misc/drupal-G.js/misc/drupal-G.js https://www.pearreview.com/misc/drupal-G.js — 200 — 4.1 KiB — 517 ms — h3https://www.pearreview.com/sites/default/files/languages/de_1ad018fc22722f19c63dba9334d35589-G.js/sites/default/files/languages/de_1... https://www.pearreview.com/sites/default/files/languages/de_1ad018fc22722f19c63dba9334d35589-G.js — 200 — 1.5 KiB — 517 ms — h3https://www.pearreview.com/sites/all/themes/PearReview/js/jquery-G.js/sites/all/themes/PearReview/js/jqu... https://www.pearreview.com/sites/all/themes/PearReview/js/jquery-G.js — 200 — 36.9 KiB — 980 ms — h3https://www.pearreview.com/sites/all/themes/PearReview/js/jquery.lightbox-0.5-G.js/sites/all/themes/PearReview/js/jqu... https://www.pearreview.com/sites/all/themes/PearReview/js/jquery.lightbox-0.5-G.js — 200 — 6.0 KiB — 634 ms — h3https://www.pearreview.com/sites/all/themes/PearReview/js/jquery.color-G.js/sites/all/themes/PearReview/js/jqu... https://www.pearreview.com/sites/all/themes/PearReview/js/jquery.color-G.js — 200 — 2.0 KiB — 509 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v4513226cdae34746b4dedf0b4dfa099e1781791509496static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v4513226cdae34746b4dedf0b4dfa099e1781791509496 — 200 — 11.3 KiB — 32 ms — h2https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202608200101/show_ads_impl_fy2021.js?bust=122880588pagead2.googlesyndication.com/pagea... https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202608200101/show_ads_impl_fy2021.js?bust=122880588 — 200 — 162.2 KiB — 62 ms — h3https://googleads.g.doubleclick.net/pagead/html/r20260820/r20190131/zrt_lookup_fy2021.htmlgoogleads.g.doubleclick.net/pagead/... https://googleads.g.doubleclick.net/pagead/html/r20260820/r20190131/zrt_lookup_fy2021.html — 200 — 3.8 KiB — 44 ms — h3https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-1502173011299631&output=html&adk=1812271804&adf=3025194257&abgtt=6&lmt=1739958916&plat=3%3A65536%2C4%3A65536%2C9%3A32768%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C32%3A32%2C41%3A32%2C42%3A32%2C43%3A32%2C44%3A32&format=0x0&url=https%3A%2F%2Fwww.pearreview.com%2F&pra=5&asro=0&aimartd=4&aieuf=1&aicrs=1&uach=WyJBbmRyb2lkIiwiMTEuMCIsIiIsIm1vdG8gZyBwb3dlciAoMjAyMikiLCIxNDYuMC4wLjAiLG51bGwsMSxudWxsLCI2NCIsW1siTm90LUEuQnJhbmQiLCIyNC4wLjAuMCJdLFsiQ2hyb21pdW0iLCIxNDYuMC43NjgwLjE2NCJdXSwwXQ..&dt=1787282993648&bpp=11&bdt=121&idt=128&shv=r20260820&mjsv=m202608200101&ptt=9&saldr=aa&abxe=1&cookie_enabled=1&eoidce=1&nras=1&correlator=4501581290791&frm=20&pv=2&u_tz=0&u_his=2&u_h=823&u_w=412&u_ah=823&u_aw=412&u_cd=24&u_sd=1.75&dmc=4&adx=-12245933&ady=-12245933&biw=980&bih=1957&scr_x=0&scr_y=0&eid=95397679%2C95399754%2C122880397%2C122880588&oid=2&pvsid=3620653203063848&tmod=1902766073&uas=0&nvt=1&fsapi=1&fc=1920&brdim=0%2C0%2C0%2C0%2C412%2C0%2C412%2C823%2C981%2C1958&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=33792&bc=31&bz=1.05&ifi=1&uci=a!1&fsb=1&dtd=184googleads.g.doubleclick.net/pagead/... 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h3https://ep1.adtrafficquality.google/getconfig/sodar?sv=200&tid=gda&tv=r20260820&st=env&sjk=3620653203063848ep1.adtrafficquality.google/getconf... https://ep1.adtrafficquality.google/getconfig/sodar?sv=200&tid=gda&tv=r20260820&st=env&sjk=3620653203063848 — 200 — 13.3 KiB — 60 ms — h3https://www.pearreview.com/favicon.ico/favicon.ico https://www.pearreview.com/favicon.ico — -1 — 0 B — 170 ms — https://www.pearreview.com/cdn-cgi/rum?/cdn-cgi/rum? https://www.pearreview.com/cdn-cgi/rum? — 204 — 459 B — 9 ms — h3https://ep2.adtrafficquality.google/sodar/sodar2.jsep2.adtrafficquality.google/sodar/s... https://ep2.adtrafficquality.google/sodar/sodar2.js — 200 — 7.9 KiB — 70 ms — h2https://ep2.adtrafficquality.google/sodar/sodar2/255/runner.htmlep2.adtrafficquality.google/sodar/s... https://ep2.adtrafficquality.google/sodar/sodar2/255/runner.html — 200 — 5.8 KiB — 34 ms — h2https://www.google.com/recaptcha/api2/aframewww.google.com/recaptcha/api2/afram... 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https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=255&t=2&li=gda_r20260820&jk=3620653203063848&bg=!0dKl0rDNAAYssmaFDLI7AEcBe5WfOP1om1Ys4BwfbKhPI-uDo1qf58NEVX7Sa2RHj7BPi69RfUuEOxWyxg8HG2dQfLXaFU2jXgzsb5V51BvLR6htJtuVewIAAACOUgAAAAdoAQd-ADapI2tLcQnKos3gF1WManIwfUimTUbnZmkCQn39HsiCgYtUstsiDtsz3XD6X1sztQnzyH9z_BsKAAl3Ny95rkcG7tWZAqfss63fZJj3dZkjLRf6SfoV4fySnp66QCS45Ru8t4w-IAtGl4pbesk0XkiMbXBHR7tUWNcntZlH7rbMjjpIZxwyiTXCEMcvvObh5L4Jz-K0IxJveVzO8GhKZtXbkkHjl4OezQ6Zm369zQcq7dgYzV4qBk8_pzxj3ZTYdP_jpzuvTztPYZoLTWplEtE2Vvc_ap63-FpF67v4qkrsTband7DSuyghx7JZidYvBLp8HX3ykg0S6_0w3IQ8PLjS-jUgQjl2JySgU6M3AfXCxa2WLnlsQf5XR57cnsuZ-lOC3Sx1LclkrrY_rOJIEaz5Ty3bgPC8ibjUSyl3WCLNLMOW-nlNhkFpTTQMvNEU4aj_Kk7QJKDR8R8o9uwt3NpdNmFp4U0dxhLzgx2cbHhWZr0MQvyoE77LfGvWhvgfJ23-Gt4QFnxzd8bHzXsjr3kfwaV8doS5dcJ8EtOeHaI0935G6zHLOqnZKJYEbxqfIOcfbRG7EidG0cr-Yv7DfwliBbiEIbjl4VMuKEELA9ltT6YNhxHO4yJ4jtUiOmV76RWYf7FuY2p0kbFetn7Fm8mXOM8MXd7EzBUNwq7iBykd5lCQpFd1-ebbnQ4AAef-ryYePEtugjqAqolnOVyCK4wYMcvwu_ERc3iIGli1CWk6Q8LYLL-HV_jo15j4WWwa20aRl-2YazE2-yx6mTzt05lGPkck-40mo0FSS0mBdqmHzzrIxVATnhyHrVT1OQgEeexpjFTX9pcIMqBOYRHHG_x7QDKo8V5S3Vg9wUXyMGKaRwuU6S6PdZtXO33-_r1sltOMHJjKVZXM2lwwl5uuwdI7MsYf4oPlqKRYoID-s1RNptbxTeERL55H3u34XeTHa1NgYtICEMEKtW-2-i-apJLtc4T6DpC6MKrmF49E — 204 — 17 B — 66 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
50% of JavaScript execution is third-party
First-party Third-party 1148ms · 226KB · $15/mo
pagead2.googlesyndication.com
Other
Costly
Execution 779ms
Transfer 162 KB
Unused 68%
Monthly Cost $10/mo
pagead2.googlesyndication.com
Other
Costly
Execution 302ms
Transfer 56 KB
Unused 48%
Monthly Cost $4/mo
ep2.adtrafficquality.google
Other
Optional
Execution 66ms
Transfer 8 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • pagead2.googlesyndication.com adds 779ms and costs ~$10/month
  • pagead2.googlesyndication.com adds 302ms and costs ~$4/month

50% 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

pagead2.googlesyndication.com takes 779ms 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

68% of pagead2.googlesyndication.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

pagead2.googlesyndication.com takes 302ms 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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