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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
67
GRADE
D
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
80
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
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.
92
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.

1.47 s

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

1.69 s

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

181 ms

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

0.017

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

2.09 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.

4.08 s

Page Load Progression

396 ms
791 ms
1.2 s
1.6 s
2.0 s
2.4 s
2.8 s
3.2 s
Checks
15
5 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
3.6 MB transferred, 109 requests
FIX
3.6 MB transferred, 109 requests
Warning::
Page weighs 8.4 MB (3.6 MB transferred)
Warning::
Images are 2.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.0 MB
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Warning::
109 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.75 g CO2 per page load
3.6 MB / 2.4 MB budget
3.6 MB transferred
109 requests
0.75 g CO2 per page load
Images 2.0 MiB 55%
JavaScript 1.2 MiB 35%
CSS 178.2 KiB 5%
Fonts 95.6 KiB 3%
Other 42.4 KiB 1%
HTML 31.7 KiB 1%
Other 13.2 KiB 0%
Other 7.3 KiB 0%
Other 224 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

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 (3.6 MiB of 3.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
34 scripts, 694 KB unused
FIX
34 scripts, 694 KB unused
Warning::
https://virtualconcierge.cisco.com/widgets/cisco-c...: 485 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202601.1...: 67 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.cisco.com/etc/cloudsettings.kernel.js/...: 45 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.cisco.com/etc.clientlibs/cisco-cdc/cli...: 42 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://tags.tiqcdn.com/utag/cisco/home/prod/utag....: 31 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 694 KB
694 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://virtualconcierge.cisco.com/widgets/cisco-chat-widget.js643 KB485 KB (76%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js127 KB67 KB (53%)✓3rd
https://www.cisco.com/etc/cloudsettings.kernel.js/conf/ciscoreimagine/settings/cloudsettings/default/contexthub93 KB45 KB (49%)✓3rd
https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-homepage.lc-ae745775dc717a394841b3189a55e9ac-lc.min.js64 KB42 KB (67%)✓3rd
https://tags.tiqcdn.com/utag/cisco/home/prod/utag.js76 KB31 KB (41%)✓3rd
https://s.go-mpulse.net/boomerang/GKZXC-NS3SU-A7VFH-HKBHM-U7LKH57 KB24 KB (41%)✓3rd
https://www.cisco.com/etc.clientlibs/clientlibs/granite/utils.sc-e7bf340a353e643d198b25d0c8ccce47-1752850000-sc.min.js4 KB—✓3rd
https://www.cisco.com/content/experience-fragments/cdc/site/us/en/header/header---support.js7 KB—✓3rd
https://rum.hlx.page/.rum/@adobe/helix-rum-js@%5E2/dist/micro.js1 KB—✓3rd
https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery/granite.sc-543d214c88dfa6f4a3233b630c82d875-1752850000-sc.min.js3 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

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

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
Page Weight Inventory
Action
109 resources · 3.6 MB · 694 KB savings available
FIX
109 resources · 3.6 MB · 694 KB savings available
Warning::
Page weight 2.6 MB over 1MB target
Got: 3.6 MB Expected: ≤ 1 MB
Info::
~694 KB of savings available
Warning::
108 third-party resources (100% of weight)
Info::
4 resources over 200KB
109 resources · 3.6 MiB · 108 third-party 2.6 MiB over 1MB target
Image 55% · 2.0 MiB
JavaScript 35% · 1.2 MiB
CSS 5% · 184.6 KiB
Font 3% · 95.6 KiB
Other 1% · 48.3 KiB
Document 1% · 33.6 KiB

~693.9 KiB of savings available

Remove unused JavaScript: 693.9 KiB
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.

C
Image Optimization
Action
44 images, 0 KB saveable
REVIEW
44 images, 0 KB saveable
Warning::
https://www.cisco.com/content/dam/cisco-cdc/site/c... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cisco.com/content/dam/cisco-cdc/site/c... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cisco.com/content/dam/cisco-cdc/site/c... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cisco.com/content/dam/cisco-cdc/site/i... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
44 images 2.0 MB
0 oversized -0 KB
21 legacy format
4 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

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

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

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

C
JS Execution Cost
Action
1793ms total JS execution
REVIEW
1793ms total JS execution
Warning::
https://www.cisco.com/: 501ms CPU time
Warning::
Unattributable: 349ms CPU time
Warning::
https://virtualconcierge.cisco.com/widgets/cisco-c...: 307ms CPU time
Info::
https://www.cisco.com/etc/cloudsettings.kernel.js/...: 201ms CPU time
Info::
https://www.cisco.com/etc.clientlibs/cisco-cdc/cli...: 155ms CPU time
Warning::
Third-party scripts: 1793ms (100% of total)

Main Thread Breakdown

Script Evaluation 40% Other 27% Style & Layout 19% Script Parsing & Compilation 5% Parse HTML & CSS 4% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.cisco.com/501ms15ms8ms3rd
Unattributable349ms34ms0ms3rd
https://virtualconcierge.cisco.com/widgets/cisco-chat-widget.js307ms219ms4ms3rd
https://www.cisco.com/etc/cloudsettings.kernel.js/conf/ciscoreimagine/settings/cloudsettings/default/contexthub201ms100ms15ms3rd
https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-homepage.lc-ae745775dc717a394841b3189a55e9ac-lc.min.js155ms62ms16ms3rd
https://cdn.cookielaw.org/scripttemplates/202601.1.0/otBannerSdk.js151ms94ms21ms3rd
https://s.go-mpulse.net/boomerang/GKZXC-NS3SU-A7VFH-HKBHM-U7LKH65ms27ms9ms3rd
https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-ancillary.js64ms56ms0ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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 (96 KB)
PASS
2 fonts (96 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

96 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 500 ms 1.0 s 1.5 s FCP 1.5 s LCP 1.7 shttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 47.3 KiB — 16 ms — font-display: swaphttps://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-framework/resources/fonts/inter-latin-variable.woff2inter-latin-variable.woff2 https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-framework/resources/fonts/inter-latin-variable.woff2 — 48.3 KiB — 16 ms — font-display: swap
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 16 ms
Start 949 ms
Risk FOUT — text flashes from fallback to web font
inter-latin-variable.woff2 woff2 swap
Size 48 KB
Load time 16 ms
Start 1.1 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
Network Waterfall
109 requests over 2673ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.5 s LCP 1.7 shttps://cisco.com// https://cisco.com/ — 302 — 75 B — 389 ms — http/1.1https://www.cisco.com/www.cisco.com/ https://www.cisco.com/ — 200 — 31.7 KiB — 32 ms — h2https://rum.hlx.page/.rum/@adobe/helix-rum-js@%5E2/dist/micro.jsrum.hlx.page/.rum/@adobe/helix-rum-... https://rum.hlx.page/.rum/@adobe/helix-rum-js@%5E2/dist/micro.js — 200 — 1.1 KiB — 69 ms — h2https://www.cisco.com/c/dam/cdc/t/ctm-core.jswww.cisco.com/c/dam/cdc/t/ctm-core.... https://www.cisco.com/c/dam/cdc/t/ctm-core.js — 200 — 12.2 KiB — 57 ms — h2https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-bullseye.lc-9991d305f087dfcda4af699ecb028bf6-lc.min.jswww.cisco.com/etc.clientlibs/cisco-... https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-bullseye.lc-9991d305f087dfcda4af699ecb028bf6-lc.min.js — 200 — 7.9 KiB — 71 ms — h2https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-dependencies.lc-a2109ad53af6d357ad877dac6e7ae4fb-lc.min.csswww.cisco.com/etc.clientlibs/cisco-... https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-dependencies.lc-a2109ad53af6d357ad877dac6e7ae4fb-lc.min.css — 200 — 63.3 KiB — 49 ms — h2https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-dependencies.lc-0c88cdcf7f4e6e25665417a58577120c-lc.min.jswww.cisco.com/etc.clientlibs/cisco-... https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-dependencies.lc-0c88cdcf7f4e6e25665417a58577120c-lc.min.js — 200 — 10.7 KiB — 73 ms — h2https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-base.lc-08379cd967f4591e03a81725e4f3c9df-lc.min.csswww.cisco.com/etc.clientlibs/cisco-... https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-base.lc-08379cd967f4591e03a81725e4f3c9df-lc.min.css — 200 — 10.2 KiB — 39 ms — h2https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-homepage.lc-e76ceb74d50acbdb122ff637b1fd218f-lc.min.csswww.cisco.com/etc.clientlibs/cisco-... https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-homepage.lc-e76ceb74d50acbdb122ff637b1fd218f-lc.min.css — 200 — 103.5 KiB — 81 ms — h2https://www.cisco.com/etc/cloudsettings.kernel.js/conf/ciscoreimagine/settings/cloudsettings/default/contexthubwww.cisco.com/etc/cloudsettings.ker... https://www.cisco.com/etc/cloudsettings.kernel.js/conf/ciscoreimagine/settings/cloudsettings/default/contexthub — 200 — 92.6 KiB — 103 ms — h2https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery.lc-7842899024219bcbdb5e72c946870b79-lc.min.jswww.cisco.com/etc.clientlibs/client... https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery.lc-7842899024219bcbdb5e72c946870b79-lc.min.js — 302 — 1.0 KiB — 149 ms — h2https://www.cisco.com/etc.clientlibs/clientlibs/granite/utils.lc-e7bf340a353e643d198b25d0c8ccce47-lc.min.jswww.cisco.com/etc.clientlibs/client... https://www.cisco.com/etc.clientlibs/clientlibs/granite/utils.lc-e7bf340a353e643d198b25d0c8ccce47-lc.min.js — 302 — 1.0 KiB — 149 ms — h2https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery/granite.lc-543d214c88dfa6f4a3233b630c82d875-lc.min.jswww.cisco.com/etc.clientlibs/client... https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery/granite.lc-543d214c88dfa6f4a3233b630c82d875-lc.min.js — 302 — 1.1 KiB — 148 ms — h2https://www.cisco.com/etc.clientlibs/foundation/clientlibs/jquery.lc-dd9b395c741ce2784096e26619e14910-lc.min.jswww.cisco.com/etc.clientlibs/founda... https://www.cisco.com/etc.clientlibs/foundation/clientlibs/jquery.lc-dd9b395c741ce2784096e26619e14910-lc.min.js — 200 — 1.2 KiB — 82 ms — h2https://www.cisco.com/etc.clientlibs/foundation/clientlibs/shared.lc-41f79c8a45bb1766981ec4ca82d7e0e6-lc.min.jswww.cisco.com/etc.clientlibs/founda... https://www.cisco.com/etc.clientlibs/foundation/clientlibs/shared.lc-41f79c8a45bb1766981ec4ca82d7e0e6-lc.min.js — 302 — 1.0 KiB — 55 ms — h2https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swapfonts.googleapis.com/css2?family=In... https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap — 200 — 1.2 KiB — 56 ms — h2https://www.cisco.com/content/dam/cisco-cdc/site/images/heroes/homepage/2026/cisco-live-ciscolive-2026-left-logo-2400x1028.jpgwww.cisco.com/content/dam/cisco-cdc... https://www.cisco.com/content/dam/cisco-cdc/site/images/heroes/homepage/2026/cisco-live-ciscolive-2026-left-logo-2400x1028.jpg — 200 — 107.4 KiB — 100 ms — h2https://www.cisco.com/content/dam/cisco-cdc/site/core/one-off/homepage-prototype/assets/united-airlines-logo-white.svgwww.cisco.com/content/dam/cisco-cdc... https://www.cisco.com/content/dam/cisco-cdc/site/core/one-off/homepage-prototype/assets/united-airlines-logo-white.svg — 200 — 4.1 KiB — 42 ms — h2https://www.cisco.com/content/dam/cisco-cdc/site/core/one-off/homepage-prototype/assets/mclaren-logo-white.svgwww.cisco.com/content/dam/cisco-cdc... https://www.cisco.com/content/dam/cisco-cdc/site/core/one-off/homepage-prototype/assets/mclaren-logo-white.svg — 200 — 4.7 KiB — 39 ms — h2https://www.cisco.com/etc.clientlibs/foundation/clientlibs/shared.sc-41f79c8a45bb1766981ec4ca82d7e0e6-1757052000-sc.min.jswww.cisco.com/etc.clientlibs/founda... https://www.cisco.com/etc.clientlibs/foundation/clientlibs/shared.sc-41f79c8a45bb1766981ec4ca82d7e0e6-1757052000-sc.min.js — 200 — 7.2 KiB — 27 ms — h2https://www.cisco.com/content/dam/cisco-cdc/site/core/one-off/homepage-prototype/assets/carnival-logo-white.svgwww.cisco.com/content/dam/cisco-cdc... https://www.cisco.com/content/dam/cisco-cdc/site/core/one-off/homepage-prototype/assets/carnival-logo-white.svg — 200 — 2.5 KiB — 13 ms — h2https://www.cisco.com/content/dam/cisco-cdc/site/core/one-off/homepage-prototype/assets/fujifilm-logo-white.svgwww.cisco.com/content/dam/cisco-cdc... https://www.cisco.com/content/dam/cisco-cdc/site/core/one-off/homepage-prototype/assets/fujifilm-logo-white.svg — 200 — 2.0 KiB — 26 ms — h2https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery.sc-7842899024219bcbdb5e72c946870b79-1757052000-sc.min.jswww.cisco.com/etc.clientlibs/client... https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery.sc-7842899024219bcbdb5e72c946870b79-1757052000-sc.min.js — 200 — 35.8 KiB — 25 ms — h2https://www.cisco.com/etc.clientlibs/clientlibs/granite/utils.sc-e7bf340a353e643d198b25d0c8ccce47-1752850000-sc.min.jswww.cisco.com/etc.clientlibs/client... https://www.cisco.com/etc.clientlibs/clientlibs/granite/utils.sc-e7bf340a353e643d198b25d0c8ccce47-1752850000-sc.min.js — 200 — 4.4 KiB — 23 ms — h2https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery/granite.sc-543d214c88dfa6f4a3233b630c82d875-1752850000-sc.min.jswww.cisco.com/etc.clientlibs/client... https://www.cisco.com/etc.clientlibs/clientlibs/granite/jquery/granite.sc-543d214c88dfa6f4a3233b630c82d875-1752850000-sc.min.js — 200 — 2.7 KiB — 13 ms — h2https://www.cisco.com/conf/ciscoreimagine/settings/wcm/segments.seg.jswww.cisco.com/conf/ciscoreimagine/s... https://www.cisco.com/conf/ciscoreimagine/settings/wcm/segments.seg.js — 200 — 3.3 KiB — 174 ms — h2https://www.cisco.com/content/apis/UserProfilewww.cisco.com/content/apis/UserProf... https://www.cisco.com/content/apis/UserProfile — 200 — 1.7 KiB — 166 ms — h2https://www.cisco.com/etc.clientlibs/cisco-cdc/clientlibs/clientlib-base.lc-d5824568a1fdb9fa8d8b7682d6d72ca5-lc.min.jswww.cisco.com/etc.clientlibs/cisco-... 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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 1793ms · 1018KB · $24/mo
www.cisco.com
Other
Costly
Execution 501ms
Transfer 32 KB
Monthly Cost $7/mo
Unattributable
Other
Costly
Execution 349ms
Transfer 0 KB
Monthly Cost $5/mo
virtualconcierge.cisco.com
Other
Costly
Execution 307ms
Transfer 643 KB
Unused 76%
Monthly Cost $4/mo
www.cisco.com
Other
Costly
Execution 201ms
Transfer 93 KB
Unused 49%
Monthly Cost $3/mo
www.cisco.com
Other
Optional
Execution 155ms
Transfer 64 KB
Unused 67%
Monthly Cost $2/mo
OneTrust
Consent
Essential
Execution 151ms
Transfer 127 KB
Unused 53%
Monthly Cost $2/mo
s.go-mpulse.net
Other
Optional
Execution 65ms
Transfer 57 KB
Unused 41%
Monthly Cost $1/mo
www.cisco.com
Other
Optional
Execution 64ms
Transfer 2 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.cisco.com adds 501ms and costs ~$7/month
  • Unattributable adds 349ms and costs ~$5/month
  • virtualconcierge.cisco.com adds 307ms and costs ~$4/month
  • www.cisco.com adds 201ms 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

www.cisco.com takes 501ms 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 349ms 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

virtualconcierge.cisco.com takes 307ms 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

76% of virtualconcierge.cisco.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

www.cisco.com takes 201ms 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

67% of www.cisco.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

53% of OneTrust'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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