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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
5
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
44
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
75
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.

4.56 s

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

33.76 s

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

638 ms

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

0.001

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

7.20 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.

35.57 s

Page Load Progression

730 ms
1.5 s
2.2 s
2.9 s
3.6 s
4.4 s
5.1 s
5.8 s
Checks
17
7 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
31.8 MB transferred, 171 requests
FIX
31.8 MB transferred, 171 requests
Critical::
Page weighs 38.0 MB (31.8 MB transferred)
Warning::
Images are 7.2 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 7.2 MB
Warning::
JavaScript is 799 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 799 KB
Info::
Fonts are 322 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 322 KB
Warning::
171 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 6.7 g CO2 per page load
31.8 MB / 2.4 MB budget
31.8 MB transferred
171 requests
6.7 g CO2 per page load
Other 23.2 MiB 73%
Images 7.2 MiB 23%
JavaScript 799.2 KiB 2%
Fonts 321.9 KiB 1%
HTML 181.9 KiB 1%
Other 78.0 KiB 0%
Other 5.6 KiB 0%
CSS 5.4 KiB 0%
Other 4.3 KiB 0%
Other 555 B 0%
Other 551 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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

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 (31.8 MiB of 31.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5309ms total JS execution
FIX
5309ms total JS execution
Warning::
Unattributable: 1908ms CPU time
Warning::
https://www.intechopen.com/: 1047ms CPU time
Warning::
https://cdnintech.com/web/frontend/www/dist/06.98/...: 764ms CPU time
Warning::
https://consent.cookiebot.com/uc.js: 536ms CPU time
Warning::
https://cdnintech.com/web/frontend/www/dist/06.98/...: 251ms CPU time
Warning::
Third-party scripts: 5309ms (100% of total)

Main Thread Breakdown

Other 36% Script Evaluation 33% Style & Layout 10% Script Parsing & Compilation 8% Parse HTML & CSS 6% Rendering 4%
ScriptTotalScriptingParse/CompileParty
Unattributable1908ms54ms0ms3rd
https://www.intechopen.com/1047ms82ms112ms3rd
https://cdnintech.com/web/frontend/www/dist/06.98/js/5.b0b9db04b8ae6d03450d.js764ms609ms3ms3rd
https://consent.cookiebot.com/uc.js536ms290ms9ms3rd
https://cdnintech.com/web/frontend/www/dist/06.98/js/app.2368e585da4403179512.js251ms201ms40ms3rd
https://cdn.userway.org/remediation/2026-04-14-10-40-20/paid/remediation-tool.js?ts=1776163220800249ms230ms10ms3rd
https://www.googletagmanager.com/gtag/js?id=G-DTTE7J8M7F221ms178ms35ms3rd
https://cdn.userway.org/widgetapp/2026-04-14-10-40-20/widget_app_base_1776163220800.js131ms98ms13ms3rd
https://cdnintech.com/web/frontend/www/dist/06.98/js/33.a30c089b07a0f71ca700.js68ms2ms65ms3rd
https://cdnintech.com/web/frontend/www/dist/06.98/js/vendors~app.af92ceeaf02411c6f026.js68ms7ms60ms3rd

Showing top 10 of 11 scripts

D
Page Weight Inventory
Action
171 resources · 31.8 MB · 257 KB savings available
FIX
171 resources · 31.8 MB · 257 KB savings available
Warning::
Page weight 30.8 MB over 1MB target
Got: 31.8 MB Expected: ≤ 1 MB
Info::
~257 KB of savings available
Warning::
170 third-party resources (100% of weight)
Info::
13 resources over 200KB
171 resources · 31.8 MiB · 170 third-party 30.8 MiB over 1MB target
Media 73% · 23.2 MiB
Image 23% · 7.2 MiB
JavaScript 2% · 799.2 KiB
Font 1% · 321.9 KiB
Document 1% · 184.6 KiB
Other 0% · 84.7 KiB
CSS 0% · 5.4 KiB

~257.3 KiB of savings available

Remove unused JavaScript: 257.3 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
123 images, 0 KB saveable
REVIEW
123 images, 0 KB saveable
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/580 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/402 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/357 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/530 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/570 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/325 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/554 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/405 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/406 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.intechopen.com/media/original/410 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdnintech.com/web/frontend/www/assets/06.9... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
123 images 7.2 MB
0 oversized -0 KB
112 legacy format
29 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

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

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
18 scripts, 257 KB unused
REVIEW
18 scripts, 257 KB unused
Warning::
https://cdnintech.com/web/frontend/www/dist/06.98/...: 120 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-DTTE...: 61 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.userway.org/widgetapp/2026-04-14-10-40...: 28 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://consent.cookiebot.com/011c3436-7d64-4a27-a...: 25 KB unused (23%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://consent.cookiebot.com/uc.js: 23 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 257 KB
257 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdnintech.com/web/frontend/www/dist/06.98/js/vendors~app.af92ceeaf02411c6f026.js211 KB120 KB (60%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-DTTE7J8M7F163 KB61 KB (38%)✓3rd
https://cdn.userway.org/widgetapp/2026-04-14-10-40-20/widget_app_base_1776163220800.js48 KB28 KB (59%)✓3rd
https://consent.cookiebot.com/011c3436-7d64-4a27-ac89-ad262dbcfb8f/cc.js?renew=false&referer=www.intechopen.com&dnt=false&init=false108 KB25 KB (23%)✓3rd
https://consent.cookiebot.com/uc.js36 KB23 KB (64%)✓3rd
https://cdnintech.com/web/frontend/www/assets/06.98/js/adsLoader.js2 KB—✓3rd
https://cdnintech.com/web/frontend/www/dist/06.98/js/1.76c893091875fce2e959.js14 KB—✓3rd
https://cdnintech.com/web/frontend/www/dist/06.98/js/0.594e949525f6631a2829.js35 KB—✓3rd
https://cdnintech.com/web/frontend/www/dist/06.98/js/33.a30c089b07a0f71ca700.js44 KB—✓3rd
https://cdnintech.com/web/frontend/www/dist/06.98/js/app.2368e585da4403179512.js64 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

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
7 fonts (322 KB)
PASS
7 fonts (322 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

322 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s FCP 4.6 s LCP 33.8 shttps://cdnintech.com/web/fonts/v1.1/relative-bold.woff2relative-bold.woff2 https://cdnintech.com/web/fonts/v1.1/relative-bold.woff2 — 31.2 KiB — 89 ms — font-display: swaphttps://cdnintech.com/web/fonts/v1.1/FSBraboWeb-Bold.woffFSBraboWeb-Bold.woff https://cdnintech.com/web/fonts/v1.1/FSBraboWeb-Bold.woff — 46.7 KiB — 91 ms — font-display: swaphttps://cdnintech.com/web/fonts/v1.1/relative-book-pro.woff2relative-book-pro.woff2 https://cdnintech.com/web/fonts/v1.1/relative-book-pro.woff2 — 60.0 KiB — 87 ms — font-display: swaphttps://cdnintech.com/web/fonts/v1.1/FSBraboWeb-Regular.woffFSBraboWeb-Regular.woff https://cdnintech.com/web/fonts/v1.1/FSBraboWeb-Regular.woff — 46.7 KiB — 90 ms — font-display: swaphttps://cdnintech.com/web/fonts/v1.1/FSBraboWeb-Italic.woffFSBraboWeb-Italic.woff https://cdnintech.com/web/fonts/v1.1/FSBraboWeb-Italic.woff — 48.8 KiB — 94 ms — font-display: swaphttps://cdnintech.com/web/fonts/v1.1/relative-faux.woffrelative-faux.woff https://cdnintech.com/web/fonts/v1.1/relative-faux.woff — 80.1 KiB — 86 ms — font-display: swaphttps://cdnintech.com/web/fonts/v1.1/InTech.woff?v1.0InTech.woff https://cdnintech.com/web/fonts/v1.1/InTech.woff?v1.0 — 8.2 KiB — 23 ms — font-display: swap
relative-bold.woff2 woff2 swap
Size 31 KB
Load time 89 ms
Start 788 ms
Risk FOUT — text flashes from fallback to web font
FSBraboWeb-Bold.woff woff swap
Size 47 KB
Load time 91 ms
Start 788 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
relative-book-pro.woff2 woff2 swap
Size 60 KB
Load time 87 ms
Start 788 ms
Risk FOUT — text flashes from fallback to web font
FSBraboWeb-Regular.woff woff swap
Size 47 KB
Load time 90 ms
Start 788 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
FSBraboWeb-Italic.woff woff swap
Size 49 KB
Load time 94 ms
Start 789 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
relative-faux.woff woff swap
Size 80 KB
Load time 86 ms
Start 891 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
InTech.woff woff swap
Size 8 KB
Load time 23 ms
Start 892 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 ~69 KB and ~138 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
6 hints, 0 missing preconnects
PASS
6 hints, 0 missing preconnects
Info::
Page uses 6 resource hint(s)

Current Resource Hints

preconnect
—
preload
6
dns-prefetch
—
prefetch
—

6 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
171 requests over 5719ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s FCP 4.6 s LCP 33.8 shttps://intechopen.com// https://intechopen.com/ — 301 — 87 B — 295 ms — h2https://www.intechopen.com/www.intechopen.com/ https://www.intechopen.com/ — 200 — 181.1 KiB — 682 ms — h2https://consent.cookiebot.com/uc.jsconsent.cookiebot.com/uc.js https://consent.cookiebot.com/uc.js — 200 — 35.7 KiB — 56 ms — h2https://www.googletagmanager.com/gtag/js?id=G-DTTE7J8M7Fwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-DTTE7J8M7F — 200 — 163.3 KiB — 227 ms — h2https://cdnintech.com/web/frontend/www/dist/06.98/js/manifest.4122c1abb8d95a244a97.jscdnintech.com/web/frontend/www/dist... https://cdnintech.com/web/frontend/www/dist/06.98/js/manifest.4122c1abb8d95a244a97.js — 200 — 3.1 KiB — 58 ms — h2https://cdnintech.com/web/frontend/www/dist/06.98/js/vendors~app.af92ceeaf02411c6f026.jscdnintech.com/web/frontend/www/dist... 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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 5309ms · 900KB · €58/mo
Unattributable
Other
Costly
Execution 1908ms
Transfer 0 KB
Monthly Cost €21/mo
www.intechopen.com
Other
Costly
Execution 1047ms
Transfer 181 KB
Monthly Cost €11/mo
cdnintech.com
Other
Costly
Execution 764ms
Transfer 6 KB
Monthly Cost €8/mo
consent.cookiebot.com
Other
Costly
Execution 536ms
Transfer 36 KB
Unused 64%
Monthly Cost €6/mo
cdnintech.com
Other
Costly
Execution 251ms
Transfer 64 KB
Monthly Cost €3/mo
cdn.userway.org
Other
Costly
Execution 249ms
Transfer 39 KB
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Costly
Execution 221ms
Transfer 163 KB
Unused 38%
Monthly Cost €2/mo
cdn.userway.org
Other
Optional
Execution 131ms
Transfer 48 KB
Unused 59%
Monthly Cost €1/mo
cdnintech.com
Other
Optional
Execution 68ms
Transfer 44 KB
Monthly Cost €1/mo
cdnintech.com
Other
Optional
Execution 68ms
Transfer 211 KB
Unused 60%
Monthly Cost €1/mo
consent.cookiebot.com
Other
Optional
Execution 66ms
Transfer 108 KB
Unused 23%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 1908ms and costs ~€21/month
  • www.intechopen.com adds 1047ms and costs ~€11/month
  • cdnintech.com adds 764ms and costs ~€8/month
  • consent.cookiebot.com adds 536ms and costs ~€6/month
  • cdnintech.com adds 251ms and costs ~€3/month
  • cdn.userway.org adds 249ms and costs ~€3/month
  • Google Tag Manager adds 221ms and costs ~€2/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 1908ms 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

www.intechopen.com takes 1047ms 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

cdnintech.com takes 764ms 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

consent.cookiebot.com takes 536ms 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

64% of consent.cookiebot.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

cdnintech.com takes 251ms 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

cdn.userway.org takes 249ms 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

Google Tag Manager takes 221ms 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

59% of cdn.userway.org'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

60% of cdnintech.com's code is unused. The script may be loading features you don't use.

Why this matters

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

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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