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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
79
GRADE
C
FIX
3
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
94
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
99
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
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.

970 ms

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

1.34 s

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

2 ms

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

0.003

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

1.26 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.88 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
7 PASS 3 REVIEW 3 FIX
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 (1.5 MiB of 1.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
73 resources · 1.5 MB · 291 KB savings available
FIX
73 resources · 1.5 MB · 291 KB savings available
Warning::
Page weight 517 KB over 1MB target
Got: 1.5 MB Expected: ≤ 1 MB
Info::
~291 KB of savings available
Warning::
72 third-party resources (100% of weight)
73 resources · 1.5 MiB · 72 third-party 517.4 KiB over 1MB target
JavaScript 47% · 725.8 KiB
Image 34% · 516.9 KiB
Font 11% · 174.2 KiB
CSS 4% · 66.1 KiB
Other 3% · 40.1 KiB
Document 1% · 18.3 KiB

~290.5 KiB of savings available

Remove unused JavaScript: 290.5 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.

B
Page Weight Budget
1.5 MB transferred, 73 requests
REVIEW
1.5 MB transferred, 73 requests
Info::
Page weighs 3.3 MB (1.5 MB transferred)
Warning::
JavaScript is 726 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 726 KB
Info::
73 HTTP requests
Info::
Estimated 0.32 g CO2 per page load
1.5 MB / 2.4 MB budget
1.5 MB transferred
73 requests
0.32 g CO2 per page load
JavaScript 725.8 KiB 47%
Images 513.4 KiB 33%
Fonts 174.2 KiB 11%
CSS 66.1 KiB 4%
Other 26.5 KiB 2%
HTML 17.5 KiB 1%
Other 15.9 KiB 1%
Other 1023 B 0%
Other 948 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

C
Image Optimization
Action
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://www.ingentaconnect.com/images/journal-logo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/katina-banne... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/journal-logo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/123.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/journal-logo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/journal-logo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.crossref.org/logo/crossref-logo-lan... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/ic_counter_l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/ingenta-conn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/ic_ingenta_l... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ingentaconnect.com/images/katina-skysc... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 513 KB
0 oversized -0 KB
18 legacy format
11 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

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

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 Bundles
Action
25 scripts, 291 KB unused
REVIEW
25 scripts, 291 KB unused
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 110 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=UA-131...: 64 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-FWEP...: 61 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.ingentaconnect.com/js/jquery/jquery-ui...: 56 KB unused (90%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 291 KB
291 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js188 KB110 KB (58%)✓3rd
https://www.googletagmanager.com/gtag/js?id=UA-1313315-1125 KB64 KB (51%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-FWEPW5188Q&cx=c&gtm=4e64h1148 KB61 KB (41%)✓3rd
https://www.ingentaconnect.com/js/jquery/jquery-ui-1.11.4.min.js62 KB56 KB (90%)✓3rd
https://www.ingentaconnect.com/js/rwd/enquire.min.js1 KB—✓3rd
https://www.googletagservices.com/tag/js/gpt.js34 KB—✓3rd
https://www.ingentaconnect.com/js/jquery/jquery.bookmark.js6 KB—✗3rd
https://www.ingentaconnect.com/js/menus.js0 KB—✓3rd
https://www.ingentaconnect.com/js/jquery/jquery.functions.js1 KB—✓3rd
https://www.ingentaconnect.com/js/site.js7 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

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+
JS Execution Cost
327ms total JS execution
PASS
327ms total JS execution
Info::
https://securepubads.g.doubleclick.net/pagead/mana...: 108ms CPU time
Info::
https://www.ingentaconnect.com/: 85ms CPU time
Info::
Unattributable: 82ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-FWEP...: 52ms CPU time
Warning::
Third-party scripts: 327ms (100% of total)

Main Thread Breakdown

Script Evaluation 56% Other 17% Style & Layout 13% Script Parsing & Compilation 8%
ScriptTotalScriptingParse/CompileParty
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js108ms94ms10ms3rd
https://www.ingentaconnect.com/85ms1ms1ms3rd
Unattributable82ms16ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-FWEPW5188Q&cx=c&gtm=4e64h152ms43ms8ms3rd
A+
Font Loading
4 fonts (174 KB)
PASS
4 fonts (174 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

174 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 FCP 970 ms LCP 1.3 shttps://www.ingentaconnect.com/fonts/OpenSans-Regular-webfont.woffOpenSans-Regular-webfon... https://www.ingentaconnect.com/fonts/OpenSans-Regular-webfont.woff — 83.1 KiB — 38 ms — font-display: swaphttps://www.ingentaconnect.com/fonts/fontawesome-webfont.woff2fontawesome-webfont.woff2 https://www.ingentaconnect.com/fonts/fontawesome-webfont.woff2 — 55.6 KiB — 39 ms — font-display: swaphttps://www.ingentaconnect.com/fonts/montserrat-v23-latin-700.woff2montserrat-v23-latin-70... https://www.ingentaconnect.com/fonts/montserrat-v23-latin-700.woff2 — 12.6 KiB — 30 ms — font-display: swaphttps://www.ingentaconnect.com/fonts/glyphicons-halflings-regular.woffglyphicons-halflings-re... https://www.ingentaconnect.com/fonts/glyphicons-halflings-regular.woff — 22.9 KiB — 35 ms — font-display: swap
OpenSans-Regular-webfon... woff swap
Size 83 KB
Load time 38 ms
Start 690 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fontawesome-webfont.woff2 woff2 swap
Size 56 KB
Load time 39 ms
Start 691 ms
Risk FOUT — text flashes from fallback to web font
montserrat-v23-latin-70... woff2 swap
Size 13 KB
Load time 30 ms
Start 692 ms
Risk FOUT — text flashes from fallback to web font
glyphicons-halflings-re... woff swap
Size 23 KB
Load time 35 ms
Start 692 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~32 KB and ~64 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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
73 requests over 2360ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 970 ms LCP 1.3 shttps://ingentaconnect.com// https://ingentaconnect.com/ — 301 — 441 B — 146 ms — h2https://www.ingentaconnect.com/www.ingentaconnect.com/ https://www.ingentaconnect.com/ — 200 — 8.7 KiB — 389 ms — h2https://cdn.shareaholic.net/assets/pub/shareaholic.jscdn.shareaholic.net/assets/pub/shar... https://cdn.shareaholic.net/assets/pub/shareaholic.js — 200 — 4.8 KiB — 105 ms — h2https://www.ingentaconnect.com/css/connect/jquery.bookmark.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/jquery.bookmark.css — 200 — 697 B — 47 ms — h2https://www.ingentaconnect.com/css/connect/template_layout.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/template_layout.css — 200 — 1.1 KiB — 41 ms — h2https://www.ingentaconnect.com/css/connect/content.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/content.css — 200 — 2.1 KiB — 42 ms — h2https://www.ingentaconnect.com/css/connect/menus.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/menus.css — 200 — 1.6 KiB — 45 ms — h2https://www.ingentaconnect.com/css/connect/reset.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/reset.css — 200 — 642 B — 38 ms — h2https://www.ingentaconnect.com/css/connect/bobby.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/bobby.css — 200 — 314 B — 41 ms — h2https://www.ingentaconnect.com/css/connect/admin/ui-theme/cupertino/jquery-ui-1.11.4.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/admin/ui-theme/cupertino/jquery-ui-1.11.4.css — 200 — 8.2 KiB — 53 ms — h2https://www.ingentaconnect.com/css/connect/home.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/home.css — 200 — 1.4 KiB — 36 ms — h2https://www.ingentaconnect.com/css/common/jquery-ajaxCarousel.csswww.ingentaconnect.com/css/common/j... https://www.ingentaconnect.com/css/common/jquery-ajaxCarousel.css — 200 — 519 B — 43 ms — h2https://www.ingentaconnect.com/Less/ingenta.csswww.ingentaconnect.com/Less/ingenta... https://www.ingentaconnect.com/Less/ingenta.css — 200 — 48.9 KiB — 74 ms — h2https://www.ingentaconnect.com/js/jquery/jquery.min.jswww.ingentaconnect.com/js/jquery/jq... https://www.ingentaconnect.com/js/jquery/jquery.min.js — 200 — 32.6 KiB — 68 ms — h2https://www.ingentaconnect.com/js/bootstrap.min.jswww.ingentaconnect.com/js/bootstrap... https://www.ingentaconnect.com/js/bootstrap.min.js — 200 — 7.6 KiB — 48 ms — h2https://www.ingentaconnect.com/js/ingenta/dialoguePopup.jswww.ingentaconnect.com/js/ingenta/d... https://www.ingentaconnect.com/js/ingenta/dialoguePopup.js — 200 — 1.5 KiB — 47 ms — h2https://www.ingentaconnect.com/js/common/loader.jswww.ingentaconnect.com/js/common/lo... https://www.ingentaconnect.com/js/common/loader.js — 200 — 218 B — 44 ms — h2https://www.ingentaconnect.com/js/common/popup.jswww.ingentaconnect.com/js/common/po... https://www.ingentaconnect.com/js/common/popup.js — 200 — 561 B — 48 ms — h2https://www.ingentaconnect.com/js/jquery/jquery.bookmark.jswww.ingentaconnect.com/js/jquery/jq... https://www.ingentaconnect.com/js/jquery/jquery.bookmark.js — 200 — 5.9 KiB — 53 ms — h2https://www.ingentaconnect.com/js/menus.jswww.ingentaconnect.com/js/menus.js https://www.ingentaconnect.com/js/menus.js — 200 — 393 B — 44 ms — h2https://www.ingentaconnect.com/js/jquery/jquery.functions.jswww.ingentaconnect.com/js/jquery/jq... https://www.ingentaconnect.com/js/jquery/jquery.functions.js — 200 — 686 B — 54 ms — h2https://www.ingentaconnect.com/js/site.jswww.ingentaconnect.com/js/site.js https://www.ingentaconnect.com/js/site.js — 200 — 6.9 KiB — 59 ms — h2https://www.ingentaconnect.com/js/jquery/jquery-ui-1.11.4.min.jswww.ingentaconnect.com/js/jquery/jq... https://www.ingentaconnect.com/js/jquery/jquery-ui-1.11.4.min.js — 200 — 62.3 KiB — 75 ms — h2https://www.ingentaconnect.com/js/jquery-ajaxCarousel.jswww.ingentaconnect.com/js/jquery-aj... https://www.ingentaconnect.com/js/jquery-ajaxCarousel.js — 200 — 1.3 KiB — 54 ms — h2https://www.ingentaconnect.com/js/rwd/enquire.min.jswww.ingentaconnect.com/js/rwd/enqui... https://www.ingentaconnect.com/js/rwd/enquire.min.js — 200 — 1.1 KiB — 56 ms — h2https://www.ingentaconnect.com/js/rwd/enquire-settings.jswww.ingentaconnect.com/js/rwd/enqui... https://www.ingentaconnect.com/js/rwd/enquire-settings.js — 200 — 1.4 KiB — 72 ms — h2https://www.ingentaconnect.com/js/admin/metastore-tools-popup.jswww.ingentaconnect.com/js/admin/met... https://www.ingentaconnect.com/js/admin/metastore-tools-popup.js — 200 — 1.1 KiB — 43 ms — h2https://www.ingentaconnect.com/images/ingenta-connect_182x60.pngwww.ingentaconnect.com/images/ingen... https://www.ingentaconnect.com/images/ingenta-connect_182x60.png — 200 — 6.1 KiB — 49 ms — h2https://www.ingentaconnect.com/images/journal-logos/inmm/jnmm.pngwww.ingentaconnect.com/images/journ... https://www.ingentaconnect.com/images/journal-logos/inmm/jnmm.png — 200 — 60.0 KiB — 60 ms — h2https://www.ingentaconnect.com/images/journal-logos/smart/ajec.pngwww.ingentaconnect.com/images/journ... https://www.ingentaconnect.com/images/journal-logos/smart/ajec.png — 200 — 83.3 KiB — 34 ms — h2
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 970 ms LCP 1.3 shttps://ingentaconnect.com// https://ingentaconnect.com/ — 301 — 441 B — 146 ms — h2https://www.ingentaconnect.com/www.ingentaconnect.com/ https://www.ingentaconnect.com/ — 200 — 8.7 KiB — 389 ms — h2https://cdn.shareaholic.net/assets/pub/shareaholic.jscdn.shareaholic.net/assets/pub/shar... https://cdn.shareaholic.net/assets/pub/shareaholic.js — 200 — 4.8 KiB — 105 ms — h2https://www.ingentaconnect.com/css/connect/jquery.bookmark.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/jquery.bookmark.css — 200 — 697 B — 47 ms — h2https://www.ingentaconnect.com/css/connect/template_layout.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/template_layout.css — 200 — 1.1 KiB — 41 ms — h2https://www.ingentaconnect.com/css/connect/content.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/content.css — 200 — 2.1 KiB — 42 ms — h2https://www.ingentaconnect.com/css/connect/menus.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/menus.css — 200 — 1.6 KiB — 45 ms — h2https://www.ingentaconnect.com/css/connect/reset.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/reset.css — 200 — 642 B — 38 ms — h2https://www.ingentaconnect.com/css/connect/bobby.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/bobby.css — 200 — 314 B — 41 ms — h2https://www.ingentaconnect.com/css/connect/admin/ui-theme/cupertino/jquery-ui-1.11.4.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/admin/ui-theme/cupertino/jquery-ui-1.11.4.css — 200 — 8.2 KiB — 53 ms — h2https://www.ingentaconnect.com/css/connect/home.csswww.ingentaconnect.com/css/connect/... https://www.ingentaconnect.com/css/connect/home.css — 200 — 1.4 KiB — 36 ms — 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h2https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=254&t=2&li=gpt_m202604160201&jk=3366888242467777&bg=!FBelF3XNAAY2C5OeFgs7AEcBe5WfOG9Svk-yXIlXOsygxinhexvBdRrr9HacCMKhfGg8p2SyuqKrK69TlwjqOPCwVk2jZM3edaSeE9i_MyPZVDExr6hKswIAAAA5UgAAAARoAQd-ADfCnjLUGE9MNOiKawlKCyWHn_KrVCEMh2enoqWUlFY-UtayxndKHreSxA-6btVOpjFcTVtFZsFbmQKvcUYI4YUoLe0UTXLLlcDtmlZPmQ7Qwuul2L4VzlD8Rx30xbvOr0ti-ozFZUWcC3e0Du7Jym09lR23dTSLDubouIqtQq2fVFl9OcGoC7fc0imut9gMS663-0z50XermuQa62iCWFOT5m2VCT07BbqKAO4QmiIDWL5-7xXKTZ9E1SzxXjuePNdb6hWhRyI-1_ii4wjI9ywFlA_tWfm8R3gprkrPmO2Ej4gpmKQh9XylvXqS2ile566E7t6QqDFFXOfktDktDEMddHLLYqfg9qweCY7WamIRjjXjlmd7zr0LxibKSBti_ZZJlYLW7-tXvTdXI_RkWInmwEEyQhXZRA_jqIaoQH0I4aHSFW3W0VrxHX6p01gmBDfGln0IxD_Mc38HORLBKdLnIDOkfcJzSjYEAgqKdvJbqYuVzi7gv0pJDkFOcSpUBTVv4Qj_ztTZB4lvP6fR2Ix0LacKojGvziVGf_4VtUDC4hDHdZOmaLdWycghE4g24p-DSqdjWlfhH5WWX6aCxCTVLro4ZPwpOcQAY55_1M7ukaHE9LghAAvsnvveY6t-FjcrefJF9q004CmWFLzWXhl-DLtcv1wQFKqdk2BfpFARHnkAKl-nTyshjEf6zLujSUl1cza6VpgnsFt3sHA_nNZ1kfO6EJmbU_TDBqY8c-ws3HdVQEhBnhimBjtTqQzslg2OoOVc-M2QD8pfvzPFOxTWis1vI6gLnZmB9gkv4LyNg43ILvG8w-myCsZFDHEb0udojbwSrbf3zBq8SFlgetC105p_EgXEy_NHgn4KuD46aMJli7MgqSJ_NeA_1Bp9Afg6O_eiBt_Bgra6y2J0GhAruSQ25F4OsDoAdmqtUNAbwovYHaL9U_Sd63uuxYx18VklVtJPODD2omq815LW0m9YunLGb3rDfX-vep1.adtrafficquality.google/pagead/... https://ep1.adtrafficquality.google/pagead/sodar?id=sodar2&v=254&t=2&li=gpt_m202604160201&jk=3366888242467777&bg=!FBelF3XNAAY2C5OeFgs7AEcBe5WfOG9Svk-yXIlXOsygxinhexvBdRrr9HacCMKhfGg8p2SyuqKrK69TlwjqOPCwVk2jZM3edaSeE9i_MyPZVDExr6hKswIAAAA5UgAAAARoAQd-ADfCnjLUGE9MNOiKawlKCyWHn_KrVCEMh2enoqWUlFY-UtayxndKHreSxA-6btVOpjFcTVtFZsFbmQKvcUYI4YUoLe0UTXLLlcDtmlZPmQ7Qwuul2L4VzlD8Rx30xbvOr0ti-ozFZUWcC3e0Du7Jym09lR23dTSLDubouIqtQq2fVFl9OcGoC7fc0imut9gMS663-0z50XermuQa62iCWFOT5m2VCT07BbqKAO4QmiIDWL5-7xXKTZ9E1SzxXjuePNdb6hWhRyI-1_ii4wjI9ywFlA_tWfm8R3gprkrPmO2Ej4gpmKQh9XylvXqS2ile566E7t6QqDFFXOfktDktDEMddHLLYqfg9qweCY7WamIRjjXjlmd7zr0LxibKSBti_ZZJlYLW7-tXvTdXI_RkWInmwEEyQhXZRA_jqIaoQH0I4aHSFW3W0VrxHX6p01gmBDfGln0IxD_Mc38HORLBKdLnIDOkfcJzSjYEAgqKdvJbqYuVzi7gv0pJDkFOcSpUBTVv4Qj_ztTZB4lvP6fR2Ix0LacKojGvziVGf_4VtUDC4hDHdZOmaLdWycghE4g24p-DSqdjWlfhH5WWX6aCxCTVLro4ZPwpOcQAY55_1M7ukaHE9LghAAvsnvveY6t-FjcrefJF9q004CmWFLzWXhl-DLtcv1wQFKqdk2BfpFARHnkAKl-nTyshjEf6zLujSUl1cza6VpgnsFt3sHA_nNZ1kfO6EJmbU_TDBqY8c-ws3HdVQEhBnhimBjtTqQzslg2OoOVc-M2QD8pfvzPFOxTWis1vI6gLnZmB9gkv4LyNg43ILvG8w-myCsZFDHEb0udojbwSrbf3zBq8SFlgetC105p_EgXEy_NHgn4KuD46aMJli7MgqSJ_NeA_1Bp9Afg6O_eiBt_Bgra6y2J0GhAruSQ25F4OsDoAdmqtUNAbwovYHaL9U_Sd63uuxYx18VklVtJPODD2omq815LW0m9YunLGb3rDfX-v — 204 — 17 B — 47 ms — h3
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 327ms · 344KB · €2/mo
securepubads.g.doubleclick.net
Other
Optional
Execution 108ms
Transfer 188 KB
Unused 58%
Monthly Cost €1/mo
www.ingentaconnect.com
Other
Optional
Execution 85ms
Transfer 9 KB
Monthly Cost €0/mo
Unattributable
Other
Optional
Execution 82ms
Transfer 0 KB
Monthly Cost €0/mo
Google Tag Manager
Tag Manager
Optional
Execution 52ms
Transfer 148 KB
Unused 41%
Monthly Cost €0/mo

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

58% 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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