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https://emeraldinsight.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
69
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
99
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
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.

1.68 s

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

2.22 s

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

250 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.

2.17 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.

4.35 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
5 PASS 3 REVIEW 5 FIX
D
Page Weight Budget
Action
2.2 MB transferred, 97 requests
FIX
2.2 MB transferred, 97 requests
Info::
Page weighs 8.7 MB (2.2 MB transferred)
Warning::
JavaScript is 1.9 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.9 MB
Info::
97 HTTP requests
Info::
Estimated 0.47 g CO2 per page load
2.2 MB / 2.4 MB budget
2.2 MB transferred
97 requests
0.47 g CO2 per page load
JavaScript 1.9 MiB 85%
CSS 104.7 KiB 5%
Other 80.8 KiB 4%
Fonts 71.1 KiB 3%
Other 31.2 KiB 1%
Images 23.1 KiB 1%
HTML 18.3 KiB 1%
Other 9.8 KiB 0%
Other 6.9 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

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 (2.2 MiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
35 scripts, 820 KB unused
FIX
35 scripts, 820 KB unused
Warning::
https://js.stripe.com/v3/: 164 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 142 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml...: 122 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-EMHY...: 67 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-6NDQ...: 65 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 820 KB
820 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://js.stripe.com/v3/226 KB164 KB (73%)✓3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604220101/pubads_impl.js?cb=31098035188 KB142 KB (76%)✓3rd
https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js252 KB122 KB (49%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-EMHYNRVMW9&cx=c&gtm=4e64k0h1157 KB67 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-6NDQQNRVPP&cx=c&gtm=4e64k0h1154 KB65 KB (42%)✓3rd
https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/otBannerSdk.js120 KB62 KB (52%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W9XTGPJQ147 KB57 KB (39%)✓3rd
https://emerald.hum.works/js/main.js104 KB46 KB (44%)✓3rd
https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js57 KB38 KB (67%)✓3rd
https://connect.facebook.net/en_US/fbevents.js97 KB32 KB (33%)✓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
97 resources · 2.2 MB · 820 KB savings available
FIX
97 resources · 2.2 MB · 820 KB savings available
Warning::
Page weight 1.2 MB over 1MB target
Got: 2.2 MB Expected: ≤ 1 MB
Info::
~820 KB of savings available
Warning::
95 third-party resources (100% of weight)
Info::
2 resources over 200KB
97 resources · 2.2 MiB · 95 third-party 1.2 MiB over 1MB target
JavaScript 86% · 1.9 MiB
CSS 5% · 109.6 KiB
Other 4% · 90.0 KiB
Font 3% · 71.1 KiB
Document 1% · 29.9 KiB
Image 1% · 28.2 KiB

~820.4 KiB of savings available

Remove unused JavaScript: 820.4 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
10 images, 0 KB saveable
REVIEW
10 images, 0 KB saveable
Warning::
https://emer.silverchair-cdn.com/data/SiteBuilderA... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://emer.silverchair-cdn.com/ImageLibrary/emer... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://emer.silverchair-cdn.com/ImageLibrary/insl... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
10 images 23 KB
0 oversized -0 KB
10 legacy format
3 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

C
JS Execution Cost
Action
1686ms total JS execution
REVIEW
1686ms total JS execution
Warning::
Unattributable: 284ms CPU time
Info::
https://www.emerald.com/: 180ms CPU time
Info::
https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml...: 163ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-W9X...: 130ms CPU time
Info::
https://emerald.hum.works/js/main.js: 126ms CPU time
Warning::
Third-party scripts: 1686ms (100% of total)

Main Thread Breakdown

Script Evaluation 58% Other 14% Script Parsing & Compilation 14% Style & Layout 7% Garbage Collection 4%
ScriptTotalScriptingParse/CompileParty
Unattributable284ms43ms0ms3rd
https://www.emerald.com/180ms38ms19ms3rd
https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js163ms116ms40ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W9XTGPJQ130ms104ms17ms3rd
https://emerald.hum.works/js/main.js126ms86ms39ms3rd
https://www.googletagmanager.com/gtag/js?id=G-EMHYNRVMW9&cx=c&gtm=4e64k0h1107ms79ms14ms3rd
https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js105ms72ms7ms3rd
https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/otBannerSdk.js99ms61ms16ms3rd
https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js91ms37ms3ms3rd
https://js.stripe.com/v3/90ms54ms33ms3rd

Showing top 10 of 14 scripts

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
4 fonts (71 KB)
PASS
4 fonts (71 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

71 KB total

Render-blocking

0

of 4

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 2.0 s FCP 1.7 s LCP 2.2 shttps://use.typekit.net/af/a28b50/00000000000000000000e803/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3l https://use.typekit.net/af/a28b50/00000000000000000000e803/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n5&v=3 — 16.6 KiB — 22 ms — font-display: swaphttps://www.emerald.com/Themes/Silver/app/icons/v-639102489936978178/fonts/white-label.ttf?7yqv1cwhite-label.ttf https://www.emerald.com/Themes/Silver/app/icons/v-639102489936978178/fonts/white-label.ttf?7yqv1c — 20.7 KiB — 237 ms — font-display: swaphttps://use.typekit.net/af/620bf8/00000000000000000000e7fe/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3l https://use.typekit.net/af/620bf8/00000000000000000000e7fe/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n3&v=3 — 16.9 KiB — 28 ms — font-display: swaphttps://use.typekit.net/af/e3ca36/00000000000000000000e805/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3l https://use.typekit.net/af/e3ca36/00000000000000000000e805/27/l?primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&fvd=n7&v=3 — 16.9 KiB — 24 ms — font-display: swap
l woff2 swap
Size 17 KB
Load time 22 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
white-label.ttf ttf swap
Size 21 KB
Load time 237 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
l woff2 swap
Size 17 KB
Load time 28 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 17 KB
Load time 24 ms
Start 1.7 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)

Fixing the unchecked items could save ~6 KB and ~12 ms

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
97 requests over 4030ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.7 s LCP 2.2 shttps://emeraldinsight.com// https://emeraldinsight.com/ — 301 — 399 B — 355 ms — h2https://www.emerald.com/www.emerald.com/ https://www.emerald.com/ — 307 — 68 B — 22 ms — http/1.1https://emeraldinsight.com// https://emeraldinsight.com/ — 301 — 0 B — 1 ms — h2https://www.emerald.com/www.emerald.com/ https://www.emerald.com/ — 200 — 12.6 KiB — 446 ms — h2https://cookie-cdn.cookiepro.com/scripttemplates/otSDKStub.jscookie-cdn.cookiepro.com/scripttemp... https://cookie-cdn.cookiepro.com/scripttemplates/otSDKStub.js — 200 — 9.3 KiB — 37 ms — h2https://play.cadmore.media/js/CADMORE_ALL_JS.jsplay.cadmore.media/js/CADMORE_ALL_J... https://play.cadmore.media/js/CADMORE_ALL_JS.js — 200 — 1.6 KiB — 693 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js — 200 — 30.7 KiB — 77 ms — h2https://emer.silverchair-cdn.com/Themes/Silver/app/vendor/v-639102489972463725/jquery-migrate-3.1.0.min.jsemer.silverchair-cdn.com/Themes/Sil... https://emer.silverchair-cdn.com/Themes/Silver/app/vendor/v-639102489972463725/jquery-migrate-3.1.0.min.js — 301 — 338 B — 207 ms — h2https://emer.silverchair-cdn.com/Themes/Client/app/css/v-639116387624472843/site.min.cssemer.silverchair-cdn.com/Themes/Cli... https://emer.silverchair-cdn.com/Themes/Client/app/css/v-639116387624472843/site.min.css — 200 — 97.1 KiB — 207 ms — h2https://emer.silverchair-cdn.com/Themes/Silver/app/icons/v-639102489936978178/style.cssemer.silverchair-cdn.com/Themes/Sil... https://emer.silverchair-cdn.com/Themes/Silver/app/icons/v-639102489936978178/style.css — 301 — 324 B — 201 ms — h2https://emer.silverchair-cdn.com/Themes/Client/app/css/v-639102488374382319/bg_img.cssemer.silverchair-cdn.com/Themes/Cli... https://emer.silverchair-cdn.com/Themes/Client/app/css/v-639102488374382319/bg_img.css — 200 — 666 B — 201 ms — h2https://use.typekit.net/xpl0ais.cssuse.typekit.net/xpl0ais.css https://use.typekit.net/xpl0ais.css — 200 — 1.3 KiB — 16 ms — h2https://emer.silverchair-cdn.com/data/SiteBuilderAssets/Live/CSS/umbrella/v-639065042763925028/umbrella.cssemer.silverchair-cdn.com/data/SiteB... https://emer.silverchair-cdn.com/data/SiteBuilderAssets/Live/CSS/umbrella/v-639065042763925028/umbrella.css — 200 — 3.0 KiB — 201 ms — h2https://emer.silverchair-cdn.com/data/SiteBuilderAssets/Live/CSS/umbrella/v-638506059301102483/site.cssemer.silverchair-cdn.com/data/SiteB... https://emer.silverchair-cdn.com/data/SiteBuilderAssets/Live/CSS/umbrella/v-638506059301102483/site.css — 200 — 657 B — 202 ms — h2https://js.stripe.com/v3/js.stripe.com/v3/ https://js.stripe.com/v3/ — 200 — 226.1 KiB — 37 ms — h2https://cookie-cdn.cookiepro.com/consent/0197c624-2c4e-797f-8a8e-d7b514495009/0197c624-2c4e-797f-8a8e-d7b514495009.jsoncookie-cdn.cookiepro.com/consent/01... https://cookie-cdn.cookiepro.com/consent/0197c624-2c4e-797f-8a8e-d7b514495009/0197c624-2c4e-797f-8a8e-d7b514495009.json — 200 — 2.5 KiB — 59 ms — h2https://geolocation.onetrust.com/cookieconsentpub/v1/geo/locationgeolocation.onetrust.com/cookiecons... https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location — 200 — 285 B — 30 ms — h2https://emer.silverchair-cdn.com/data/SiteBuilderAssetsOriginals/Live/Images/umbrella/umbrella-logo.svgemer.silverchair-cdn.com/data/SiteB... https://emer.silverchair-cdn.com/data/SiteBuilderAssetsOriginals/Live/Images/umbrella/umbrella-logo.svg — 200 — 2.3 KiB — 15 ms — h2https://emer.silverchair-cdn.com/ImageLibrary/inslght-logo-white.svg?versionId=5050emer.silverchair-cdn.com/ImageLibra... https://emer.silverchair-cdn.com/ImageLibrary/inslght-logo-white.svg?versionId=5050 — 200 — 4.1 KiB — 16 ms — h2https://www.emerald.com/Themes/Silver/app/icons/v-639102489936978178/style.csswww.emerald.com/Themes/Silver/app/i... https://www.emerald.com/Themes/Silver/app/icons/v-639102489936978178/style.css — 200 — 1.8 KiB — 10 ms — h2https://www.emerald.com/Themes/Silver/app/vendor/v-639102489972463725/jquery-migrate-3.1.0.min.jswww.emerald.com/Themes/Silver/app/v... https://www.emerald.com/Themes/Silver/app/vendor/v-639102489972463725/jquery-migrate-3.1.0.min.js — 200 — 4.0 KiB — 10 ms — h2https://emer.silverchair-cdn.com/Themes/Client/app/jsdist/v-639116388449591218/site.min.jsemer.silverchair-cdn.com/Themes/Cli... https://emer.silverchair-cdn.com/Themes/Client/app/jsdist/v-639116388449591218/site.min.js — 301 — 327 B — 7 ms — h2https://www.emerald.com/Themes/Client/app/jsdist/v-639116388449591218/site.min.jswww.emerald.com/Themes/Client/app/j... https://www.emerald.com/Themes/Client/app/jsdist/v-639116388449591218/site.min.js — 200 — 166.9 KiB — 14 ms — h2https://emer.silverchair-cdn.com/ImageLibrary/emerald-footer-logo.png?versionId=3973emer.silverchair-cdn.com/ImageLibra... https://emer.silverchair-cdn.com/ImageLibrary/emerald-footer-logo.png?versionId=3973 — 200 — 8.8 KiB — 21 ms — h2https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.jscdn.jsdelivr.net/npm/mathjax@3/es5/... https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js — 200 — 251.6 KiB — 34 ms — h2https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/otBannerSdk.jscookie-cdn.cookiepro.com/scripttemp... https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/otBannerSdk.js — 200 — 120.2 KiB — 17 ms — h2https://cookie-cdn.cookiepro.com/consent/0197c624-2c4e-797f-8a8e-d7b514495009/01983768-acde-7a49-b4ad-71a12360e443/en.jsoncookie-cdn.cookiepro.com/consent/01... https://cookie-cdn.cookiepro.com/consent/0197c624-2c4e-797f-8a8e-d7b514495009/01983768-acde-7a49-b4ad-71a12360e443/en.json — 200 — 14.7 KiB — 37 ms — h2https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/assets/otFloatingFlat.jsoncookie-cdn.cookiepro.com/scripttemp... https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/assets/otFloatingFlat.json — 200 — 3.2 KiB — 20 ms — h2https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/assets/v2/otPcCenter.jsoncookie-cdn.cookiepro.com/scripttemp... https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/assets/v2/otPcCenter.json — 200 — 13.4 KiB — 21 ms — h2https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/assets/otCookieSettingsButton.jsoncookie-cdn.cookiepro.com/scripttemp... https://cookie-cdn.cookiepro.com/scripttemplates/202507.1.0/assets/otCookieSettingsButton.json — 200 — 2.3 KiB — 16 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 1.7 s LCP 2.2 shttps://emeraldinsight.com// https://emeraldinsight.com/ — 301 — 399 B — 355 ms — h2https://www.emerald.com/www.emerald.com/ https://www.emerald.com/ — 307 — 68 B — 22 ms — http/1.1https://emeraldinsight.com// https://emeraldinsight.com/ — 301 — 0 B — 1 ms — h2https://www.emerald.com/www.emerald.com/ https://www.emerald.com/ — 200 — 12.6 KiB — 446 ms — h2https://cookie-cdn.cookiepro.com/scripttemplates/otSDKStub.jscookie-cdn.cookiepro.com/scripttemp... https://cookie-cdn.cookiepro.com/scripttemplates/otSDKStub.js — 200 — 9.3 KiB — 37 ms — h2https://play.cadmore.media/js/CADMORE_ALL_JS.jsplay.cadmore.media/js/CADMORE_ALL_J... https://play.cadmore.media/js/CADMORE_ALL_JS.js — 200 — 1.6 KiB — 693 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js — 200 — 30.7 KiB — 77 ms — 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h2https://connect.facebook.net/signals/config/1178211065875140?v=2.9.303&r=stable&domain=www.emerald.com&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168connect.facebook.net/signals/config... https://connect.facebook.net/signals/config/1178211065875140?v=2.9.303&r=stable&domain=www.emerald.com&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168 — 200 — 46.7 KiB — 56 ms — h3https://www.google-analytics.com/g/collect?v=2&tid=G-EMHYNRVMW9&gtm=45je64k0h1v9225423011z89205100055za20gzb9205100055zd9205100055&_p=1776896708177&gcd=13l3l3l3l1l1&npa=0&dma=0&gdid=dYWJhMj&are=1&cid=302854131.1776896709&frm=0&pscdl=noapi&rcb=17&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938468~117266400~117384406~117512543&sid=1776896709&sct=1&seg=0&dl=https%3A%2F%2Fwww.emerald.com%2F&dt=Emerald%20Publishing&en=page_view&_fv=1&_ss=1&ep.content_group=Other&up.authentication_type=IP&up.organisation_name=Guest&tfd=2763www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-EMHYNRVMW9&gtm=45je64k0h1v9225423011z89205100055za20gzb9205100055zd9205100055&_p=1776896708177&gcd=13l3l3l3l1l1&npa=0&dma=0&gdid=dYWJhMj&are=1&cid=302854131.1776896709&frm=0&pscdl=noapi&rcb=17&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938468~117266400~117384406~117512543&sid=1776896709&sct=1&seg=0&dl=https%3A%2F%2Fwww.emerald.com%2F&dt=Emerald%20Publishing&en=page_view&_fv=1&_ss=1&ep.content_group=Other&up.authentication_type=IP&up.organisation_name=Guest&tfd=2763 — 204 — 48 B — 117 ms — h2https://l.sharethis.com/sc?event=pview&hostname=www.emerald.com&location=%2F&product=sop&url=https%3A%2F%2Fwww.emerald.com%2F&source=sharethis.js&fcmp=false&fcmpv2=false&has_segmentio=false&title=Emerald%20Publishing&cms=unknown&publisher=643701de45aa460012e1032e&sop=true&version=st_sop.js&lang=en&description=Emerald%20Publishing&ua=%22Chromium%22%3Bv%3D%22146%22%2C%20%22Google%20Chrome%22%3Bv%3D%22146%22&ua_mobile=false&ua_platform=macOS&ua_full_version_list=%22Not-A.Brand%22%3Bv%3D%2224.0.0.0%22%2C%20%22Chromium%22%3Bv%3D%22146.0.7680.164%22&ua_platform_version=10.15.7&uuid=e099bb4f-c034-4d79-96ec-d582638423f0&samesite=Nonel.sharethis.com/sc?event=pview&host... https://l.sharethis.com/sc?event=pview&hostname=www.emerald.com&location=%2F&product=sop&url=https%3A%2F%2Fwww.emerald.com%2F&source=sharethis.js&fcmp=false&fcmpv2=false&has_segmentio=false&title=Emerald%20Publishing&cms=unknown&publisher=643701de45aa460012e1032e&sop=true&version=st_sop.js&lang=en&description=Emerald%20Publishing&ua=%22Chromium%22%3Bv%3D%22146%22%2C%20%22Google%20Chrome%22%3Bv%3D%22146%22&ua_mobile=false&ua_platform=macOS&ua_full_version_list=%22Not-A.Brand%22%3Bv%3D%2224.0.0.0%22%2C%20%22Chromium%22%3Bv%3D%22146.0.7680.164%22&ua_platform_version=10.15.7&uuid=e099bb4f-c034-4d79-96ec-d582638423f0&samesite=None — 200 — 949 B — 142 ms — http/1.1https://emerald.hum.works/js/iframe/emerald.hum.works/js/iframe/ https://emerald.hum.works/js/iframe/ — 200 — 1.3 KiB — 62 ms — h2https://www.facebook.com/tr/?id=1178211065875140&ev=PageView&dl=https%3A%2F%2Fwww.emerald.com%2F&rl=&if=false&ts=1776896709575&sw=800&sh=600&v=2.9.303&r=stable&ec=0&o=4126&fbp=fb.1.1776896709558.257854117890111056&cs_est=true&ler=empty&cdl=API_unavailable&pmd[title]=Emerald%20Publishing&pmd[locale]=en&plt=1753.2000000476837&it=1776896709362&coo=false&expv2[0]=pl1&expv2[1]=el2&expv2[2]=bc1&expv2[3]=ra2&expv2[4]=rp2&expv2[5]=im0&expv2[6]=hf1&rqm=GETwww.facebook.com/tr/?id=11782110658... https://www.facebook.com/tr/?id=1178211065875140&ev=PageView&dl=https%3A%2F%2Fwww.emerald.com%2F&rl=&if=false&ts=1776896709575&sw=800&sh=600&v=2.9.303&r=stable&ec=0&o=4126&fbp=fb.1.1776896709558.257854117890111056&cs_est=true&ler=empty&cdl=API_unavailable&pmd[title]=Emerald%20Publishing&pmd[locale]=en&plt=1753.2000000476837&it=1776896709362&coo=false&expv2[0]=pl1&expv2[1]=el2&expv2[2]=bc1&expv2[3]=ra2&expv2[4]=rp2&expv2[5]=im0&expv2[6]=hf1&rqm=GET — 200 — 19 B — 23 ms — h3https://www.facebook.com/privacy_sandbox/pixel/register/trigger/?id=1178211065875140&ev=PageView&dl=https%3A%2F%2Fwww.emerald.com%2F&rl=&if=false&ts=1776896709575&sw=800&sh=600&v=2.9.303&r=stable&ec=0&o=4126&fbp=fb.1.1776896709558.257854117890111056&cs_est=true&ler=empty&cdl=API_unavailable&pmd[title]=Emerald%20Publishing&pmd[locale]=en&plt=1753.2000000476837&it=1776896709362&coo=false&expv2[0]=pl1&expv2[1]=el2&expv2[2]=bc1&expv2[3]=ra2&expv2[4]=rp2&expv2[5]=im0&expv2[6]=hf1&rqm=FGETwww.facebook.com/privacy_sandbox/pi... https://www.facebook.com/privacy_sandbox/pixel/register/trigger/?id=1178211065875140&ev=PageView&dl=https%3A%2F%2Fwww.emerald.com%2F&rl=&if=false&ts=1776896709575&sw=800&sh=600&v=2.9.303&r=stable&ec=0&o=4126&fbp=fb.1.1776896709558.257854117890111056&cs_est=true&ler=empty&cdl=API_unavailable&pmd[title]=Emerald%20Publishing&pmd[locale]=en&plt=1753.2000000476837&it=1776896709362&coo=false&expv2[0]=pl1&expv2[1]=el2&expv2[2]=bc1&expv2[3]=ra2&expv2[4]=rp2&expv2[5]=im0&expv2[6]=hf1&rqm=FGET — 200 — 199 B — 319 ms — h3https://securepubads.g.doubleclick.net/pagead/managed/dict/m202604210101/gptsecurepubads.g.doubleclick.net/page... https://securepubads.g.doubleclick.net/pagead/managed/dict/m202604210101/gpt — 200 — 23.0 KiB — 8 ms — h3https://t.sharethis.com/1/k/t.dhj?cid=c010&cls=B&dmn=www.emerald.com&rnd=1776896709618t.sharethis.com/1/k/t.dhj?cid=c010&... https://t.sharethis.com/1/k/t.dhj?cid=c010&cls=B&dmn=www.emerald.com&rnd=1776896709618 — 200 — 1.6 KiB — 84 ms — http/1.1https://platform-api.sharethis.com/panorama.jsplatform-api.sharethis.com/panorama... https://platform-api.sharethis.com/panorama.js — 200 — 12.9 KiB — 6 ms — h2https://emer.silverchair-cdn.com/Themes/Client/app/img/favicons/manifest.jsonemer.silverchair-cdn.com/Themes/Cli... https://emer.silverchair-cdn.com/Themes/Client/app/img/favicons/manifest.json — 404 — 0 B — 2 ms — h2https://emerald.hum.works/events/api/tracker/personalization/f9fdd1df-dfdb-419f-9002-5946e0d29891?_kid=prod-key-emerald-lmvxbhhnnfemerald.hum.works/events/api/tracke... https://emerald.hum.works/events/api/tracker/personalization/f9fdd1df-dfdb-419f-9002-5946e0d29891?_kid=prod-key-emerald-lmvxbhhnnf — 200 — 0 B — 125 ms — h3https://px.ads.linkedin.com/collect?v=2&fmt=js&pid=1318954&time=1776896709063&li_adsId=4e3704d8-d14c-4742-bb2c-309e0dd09c54&url=https%3A%2F%2Fwww.emerald.com%2F&cookiesTest=truepx.ads.linkedin.com/collect?v=2&fmt... https://px.ads.linkedin.com/collect?v=2&fmt=js&pid=1318954&time=1776896709063&li_adsId=4e3704d8-d14c-4742-bb2c-309e0dd09c54&url=https%3A%2F%2Fwww.emerald.com%2F&cookiesTest=true — 200 — 452 B — 160 ms — h2https://bcp.crwdcntrl.net/6/mapbcp.crwdcntrl.net/6/map https://bcp.crwdcntrl.net/6/map — 200 — 618 B — 27 ms — h2https://t.sharethis.com/a/t_.htm?ver=1.2051.23421&cid=c010&cls=Bt.sharethis.com/a/t_.htm?ver=1.2051... https://t.sharethis.com/a/t_.htm?ver=1.2051.23421&cid=c010&cls=B — 200 — 1.4 KiB — 28 ms — http/1.1https://emerald.hum.works/events/api/tracker/personalization/f9fdd1df-dfdb-419f-9002-5946e0d29891?_kid=prod-key-emerald-lmvxbhhnnfemerald.hum.works/events/api/tracke... https://emerald.hum.works/events/api/tracker/personalization/f9fdd1df-dfdb-419f-9002-5946e0d29891?_kid=prod-key-emerald-lmvxbhhnnf — 200 — 813 B — 136 ms — h3https://t.sharethis.com/d/a.gif?aqet=priv_block_3pcookie&r=1776896709768&cid=c010&tt=t.dhj&cls=Bt.sharethis.com/d/a.gif?aqet=priv_b... https://t.sharethis.com/d/a.gif?aqet=priv_block_3pcookie&r=1776896709768&cid=c010&tt=t.dhj&cls=B — 204 — 289 B — 27 ms — http/1.1https://px.ads.linkedin.com/wa/?medium=fetch&fmt=gpx.ads.linkedin.com/wa/?medium=fetc... https://px.ads.linkedin.com/wa/?medium=fetch&fmt=g — 204 — 43 B — 221 ms — h3https://js.stripe.com/v3/m-outer-3437aaddcdf6922d623e172c2d6f9278.htmljs.stripe.com/v3/m-outer-3437aaddcd... https://js.stripe.com/v3/m-outer-3437aaddcdf6922d623e172c2d6f9278.html — 200 — 1.2 KiB — 17 ms — h2https://emerald.hum.works/events/api/event/batch?_kid=prod-key-emerald-lmvxbhhnnfemerald.hum.works/events/api/event/... https://emerald.hum.works/events/api/event/batch?_kid=prod-key-emerald-lmvxbhhnnf — 200 — 0 B — 128 ms — h3https://js.stripe.com/v3/fingerprinted/js/m-outer-15a2b40a058ddff1cffdb63779fe3de1.jsjs.stripe.com/v3/fingerprinted/js/m... https://js.stripe.com/v3/fingerprinted/js/m-outer-15a2b40a058ddff1cffdb63779fe3de1.js — 200 — 1.0 KiB — 9 ms — h2https://m.stripe.network/inner.htmlm.stripe.network/inner.html https://m.stripe.network/inner.html — 200 — 1.8 KiB — 25 ms — h2https://m.stripe.network/out-4.5.45.jsm.stripe.network/out-4.5.45.js https://m.stripe.network/out-4.5.45.js — 200 — 16.5 KiB — 10 ms — h2https://emerald.hum.works/events/api/event/batch?_kid=prod-key-emerald-lmvxbhhnnfemerald.hum.works/events/api/event/... https://emerald.hum.works/events/api/event/batch?_kid=prod-key-emerald-lmvxbhhnnf — 200 — 27 B — 135 ms — h3https://emer.silverchair-cdn.com/Themes/Client/app/img/favicons/v-639102488374732302/favicon.icoemer.silverchair-cdn.com/Themes/Cli... https://emer.silverchair-cdn.com/Themes/Client/app/img/favicons/v-639102488374732302/favicon.ico — 200 — 4.3 KiB — 296 ms — h2https://m.stripe.com/6m.stripe.com/6 https://m.stripe.com/6 — 200 — 579 B — 594 ms — h2
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 1686ms · 1494KB · $22/mo
Unattributable
Other
Costly
Execution 284ms
Transfer 0 KB
Monthly Cost $4/mo
www.emerald.com
Other
Optional
Execution 180ms
Transfer 13 KB
Monthly Cost $2/mo
jsDelivr
CDN
Optional
Execution 163ms
Transfer 252 KB
Unused 49%
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 130ms
Transfer 147 KB
Unused 39%
Monthly Cost $2/mo
emerald.hum.works
Other
Optional
Execution 126ms
Transfer 104 KB
Unused 44%
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 107ms
Transfer 157 KB
Unused 43%
Monthly Cost $1/mo
Hotjar
Session Replay
Optional
Execution 105ms
Transfer 57 KB
Unused 67%
Monthly Cost $1/mo
cookie-cdn.cookiepro.com
Other
Optional
Execution 99ms
Transfer 120 KB
Unused 52%
Monthly Cost $1/mo
ajax.googleapis.com
Other
Optional
Execution 91ms
Transfer 31 KB
Monthly Cost $1/mo
Stripe
Payment
Essential
Execution 90ms
Transfer 226 KB
Unused 73%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 85ms
Transfer 154 KB
Unused 42%
Monthly Cost $1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution 81ms
Transfer 188 KB
Unused 76%
Monthly Cost $1/mo
www.emerald.com
Other
Optional
Execution 80ms
Transfer 0 KB
Monthly Cost $1/mo
Facebook Pixel
Advertising
Optional
Execution 64ms
Transfer 47 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 284ms and costs ~$4/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

Unattributable takes 284ms 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 Hotjar'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

52% of cookie-cdn.cookiepro.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

73% of Stripe'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

76% of securepubads.g.doubleclick.net'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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