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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
3
REVIEW
3
PASS
9
INFO
2

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

Mobile Desktop
19
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
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.
100
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.

2.18 s

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

18.93 s

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

1.25 s

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

0.511

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

8.28 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.

18.98 s

Page Load Progression

1.2 s
2.5 s
3.7 s
4.9 s
6.2 s
7.4 s
8.6 s
9.9 s
Checks
17
9 PASS 3 REVIEW 3 FIX
F
Page Weight Budget
Action
4.1 MB transferred, 61 requests
FIX
4.1 MB transferred, 61 requests
Critical::
Page weighs 6.6 MB (4.1 MB transferred)
Warning::
Images are 3.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.1 MB
Warning::
JavaScript is 577 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 577 KB
Info::
61 HTTP requests
Info::
Estimated 0.86 g CO2 per page load
4.1 MB / 2.4 MB budget
4.1 MB transferred
61 requests
0.86 g CO2 per page load
Images 3.1 MiB 77%
JavaScript 576.6 KiB 14%
Fonts 188.4 KiB 4%
Other 78.5 KiB 2%
CSS 59.4 KiB 1%
HTML 42.3 KiB 1%
Other 15.1 KiB 0%
Other 10.4 KiB 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

F
JS Execution Cost
Action
6185ms total JS execution
FIX
6185ms total JS execution
Warning::
https://elte.hu/: 2381ms CPU time
Warning::
https://elte.hu/sites/default/files/js/js_9QxoZrPm...: 1585ms CPU time
Warning::
Unattributable: 1251ms CPU time
Warning::
https://elte.hu/sites/default/files/js/js_jEoJ4zbo...: 260ms CPU time
Info::
https://www.skynettechnologies.com/accessibility/j...: 219ms CPU time
Info::
Third-party scripts: 1742ms (28% of total)

Main Thread Breakdown

Style & Layout 42% Script Evaluation 24% Other 22% Rendering 6% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
https://elte.hu/2381ms35ms3ms1st
https://elte.hu/sites/default/files/js/js_9QxoZrPmodsZYOy194GQgMlxNYkU4ap2eh3F6Sp_wis.js?scope=header&delta=0&language=hu&theme=spred&include=eJx1UO1uAyEMeyHaPFIUwAV6KTkBp348fdm0VddO-2PZlpU4kUJSOKl5URcy0OG3ltD4grrRH-d47g46wMEaSEJA78UXLePOKo8JJhHt38y1xIQxozVtkrDP1ZCt8RDPWWrUtyFBFDVKcycJ8GYLr-UGpXfpTpvqb5S9Wlhob7lklhRzR6I04VMf5Sw3t6g0o290fW2I5KXjh2Z8nXfwUussOMoyXl32wo37Oh9XO-jFuENayE9BBZEe1585ms534ms4ms1st
Unattributable1251ms284ms0ms3rd
https://elte.hu/sites/default/files/js/js_jEoJ4zbo9-pncJ6RShFLiNXUs4QXumoZUq81pEgjgyE.js?scope=footer&delta=2&language=hu&theme=spred&include=eJx1UO1uAyEMeyHaPFIUwAV6KTkBp348fdm0VddO-2PZlpU4kUJSOKl5URcy0OG3ltD4grrRH-d47g46wMEaSEJA78UXLePOKo8JJhHt38y1xIQxozVtkrDP1ZCt8RDPWWrUtyFBFDVKcycJ8GYLr-UGpXfpTpvqb5S9Wlhob7lklhRzR6I04VMf5Sw3t6g0o290fW2I5KXjh2Z8nXfwUussOMoyXl32wo37Oh9XO-jFuENayE9BBZEe260ms68ms79ms1st
https://www.skynettechnologies.com/accessibility/js/accessibility-loader.js219ms203ms3ms3rd
https://elte.hu/core/assets/vendor/jquery/jquery.min.js?v=4.0.0148ms137ms10ms1st
https://cdn.jsdelivr.net/npm/typesense-instantsearch-adapter@2/dist/typesense-instantsearch-adapter.min.js135ms108ms18ms3rd
https://www.skynettechnologies.com/accessibility/js/all-in-one-accessibility-js-widget-minify.js?colorcode=85ms20ms63ms3rd
https://elte.hu/libraries/klaro/dist/klaro-no-translations-no-css.js?tds0fs68ms47ms8ms1st
https://cdn.jsdelivr.net/npm/instantsearch.js@4.60.0/dist/instantsearch.production.min.js52ms18ms35ms3rd
D
Page Weight Inventory
Action
61 resources · 4.1 MB · 214 KB savings available
FIX
61 resources · 4.1 MB · 214 KB savings available
Warning::
Page weight 3.1 MB over 1MB target
Got: 4.1 MB Expected: ≤ 1 MB
Info::
~214 KB of savings available
Info::
23 third-party resources (31% of weight)
Info::
2 resources over 200KB
61 resources · 4.1 MiB · 23 third-party 3.1 MiB over 1MB target
Image 77% · 3.2 MiB
JavaScript 14% · 576.6 KiB
Font 4% · 188.4 KiB
Media 1% · 62.5 KiB
CSS 1% · 59.4 KiB
Document 1% · 42.3 KiB
Other 1% · 26.4 KiB

~213.6 KiB of savings available

Remove unused JavaScript: 213.6 KiB
B
Image Optimization
28 images, 0 KB saveable
REVIEW
28 images, 0 KB saveable
Info::
All images are well-optimized
28 images 3.1 MB
0 oversized -0 KB
22 legacy format
0 missing dimensions CLS risk
C
JS Bundles
Action
17 scripts, 214 KB unused
REVIEW
17 scripts, 214 KB unused
Warning::
https://elte.hu/sites/default/files/js/js_jEoJ4zbo...: 113 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.jsdelivr.net/npm/instantsearch.js@4.60...: 58 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.skynettechnologies.com/accessibility/j...: 43 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 214 KB
214 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://elte.hu/sites/default/files/js/js_jEoJ4zbo9-pncJ6RShFLiNXUs4QXumoZUq81pEgjgyE.js?scope=footer&delta=2&language=hu&theme=spred&include=eJx1UO1uAyEMeyHaPFIUwAV6KTkBp348fdm0VddO-2PZlpU4kUJSOKl5URcy0OG3ltD4grrRH-d47g46wMEaSEJA78UXLePOKo8JJhHt38y1xIQxozVtkrDP1ZCt8RDPWWrUtyFBFDVKcycJ8GYLr-UGpXfpTpvqb5S9Wlhob7lklhRzR6I04VMf5Sw3t6g0o290fW2I5KXjh2Z8nXfwUussOMoyXl32wo37Oh9XO-jFuENayE9BBZEe173 KB113 KB (66%)✓1st
https://cdn.jsdelivr.net/npm/instantsearch.js@4.60.0/dist/instantsearch.production.min.js75 KB58 KB (78%)✓3rd
https://www.skynettechnologies.com/accessibility/js/accessibility-loader.js100 KB43 KB (43%)✓3rd
https://elte.hu/libraries/klaro/dist/klaro-no-translations-no-css.js?tds0fs21 KB—✓1st
https://www.skynettechnologies.com/accessibility/js/accessibility-loader.js?colorcode=100 KB—✓3rd
https://elte.hu/core/assets/vendor/jquery/jquery.min.js?v=4.0.027 KB—✓1st
https://cdn.jsdelivr.net/npm/typesense-instantsearch-adapter@2/dist/typesense-instantsearch-adapter.min.js39 KB—✓3rd
https://elte.hu/sites/default/files/js/js_Y4JBMy6ffhKBJOvVSUmLHZyvSKbn_1r5q5xyLM-9Rls.js?scope=footer&delta=7&language=hu&theme=spred&include=eJx1UO1uAyEMeyHaPFIUwAV6KTkBp348fdm0VddO-2PZlpU4kUJSOKl5URcy0OG3ltD4grrRH-d47g46wMEaSEJA78UXLePOKo8JJhHt38y1xIQxozVtkrDP1ZCt8RDPWWrUtyFBFDVKcycJ8GYLr-UGpXfpTpvqb5S9Wlhob7lklhRzR6I04VMf5Sw3t6g0o290fW2I5KXjh2Z8nXfwUussOMoyXl32wo37Oh9XO-jFuENayE9BBZEe22 KB—✓1st
https://elte.hu/sites/default/files/js/js_9QxoZrPmodsZYOy194GQgMlxNYkU4ap2eh3F6Sp_wis.js?scope=header&delta=0&language=hu&theme=spred&include=eJx1UO1uAyEMeyHaPFIUwAV6KTkBp348fdm0VddO-2PZlpU4kUJSOKl5URcy0OG3ltD4grrRH-d47g46wMEaSEJA78UXLePOKo8JJhHt38y1xIQxozVtkrDP1ZCt8RDPWWrUtyFBFDVKcycJ8GYLr-UGpXfpTpvqb5S9Wlhob7lklhRzR6I04VMf5Sw3t6g0o290fW2I5KXjh2Z8nXfwUussOMoyXl32wo37Oh9XO-jFuENayE9BBZEe7 KB—✓1st
https://www.skynettechnologies.com/accessibility/js/all-in-one-accessibility-js-widget-minify.js?colorcode=1 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Third-Party Impact
31% third-party, 0 ms blocking
PASS
31% third-party, 0 ms blocking
Info::
Third-party code accounts for 31% of page weight (1.3 MiB of 4.1 MiB)
Info::
Third-party blocking time is low (0 ms)
69%
31%
First-party Third-party
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
6 fonts (188 KB)
PASS
6 fonts (188 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

188 KB total

Render-blocking

0

of 6

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 FCP 2.2 s LCP 18.9 shttps://elte.hu/themes/custom/spred/fonts/OpenSans-Regular.woff2OpenSans-Regular.woff2 https://elte.hu/themes/custom/spred/fonts/OpenSans-Regular.woff2 — 25.2 KiB — 310 ms — font-display: swaphttps://elte.hu/themes/custom/spred/fonts/OpenSans-Bold.woff2OpenSans-Bold.woff2 https://elte.hu/themes/custom/spred/fonts/OpenSans-Bold.woff2 — 24.5 KiB — 340 ms — font-display: swaphttps://elte.hu/themes/custom/spred/fonts/OpenSans-SemiBold.woff2OpenSans-SemiBold.woff2 https://elte.hu/themes/custom/spred/fonts/OpenSans-SemiBold.woff2 — 25.1 KiB — 341 ms — font-display: swapdata:application/x-font-ttf;charset=utf-8;base64,AAEAAAALAIAAAwAwT1MvMg8SBfAAAAC8AAAAYGNtYXAXVtKNAA…x-font-ttf;charset=utf-... data:application/x-font-ttf;charset=utf-8;base64,AAEAAAALAIAAAwAwT1MvMg8SBfAAAAC8AAAAYGNtYXAXVtKNAA… — 2.3 KiB — 370 ms — font-display: swaphttps://www.skynettechnologies.com/accessibility/fonts/rubik-v28-arabic_cyrillic_cyrillic-ext_hebrew_latin_latin-ext-regular.woff2rubik-v28-arabic_cyrill... https://www.skynettechnologies.com/accessibility/fonts/rubik-v28-arabic_cyrillic_cyrillic-ext_hebrew_latin_latin-ext-regular.woff2 — 55.5 KiB — 210 ms — font-display: swaphttps://www.skynettechnologies.com/accessibility/fonts/rubik-v28-arabic_cyrillic_cyrillic-ext_hebrew_latin_latin-ext-500.woff2rubik-v28-arabic_cyrill... https://www.skynettechnologies.com/accessibility/fonts/rubik-v28-arabic_cyrillic_cyrillic-ext_hebrew_latin_latin-ext-500.woff2 — 55.9 KiB — 199 ms — font-display: swap
OpenSans-Regular.woff2 woff2 swap
Size 25 KB
Load time 310 ms
Start 2.6 s
Risk FOUT — text flashes from fallback to web font
OpenSans-Bold.woff2 woff2 swap
Size 24 KB
Load time 340 ms
Start 2.7 s
Risk FOUT — text flashes from fallback to web font
OpenSans-SemiBold.woff2 woff2 swap
Size 25 KB
Load time 341 ms
Start 2.7 s
Risk FOUT — text flashes from fallback to web font
x-font-ttf;charset=utf-... unknown swap
Size 2 KB
Load time 370 ms
Start 4.0 s
Risk FOUT — text flashes from fallback to web font
rubik-v28-arabic_cyrill... woff2 swap
Size 55 KB
Load time 210 ms
Start 4.6 s
Risk FOUT — text flashes from fallback to web font
rubik-v28-arabic_cyrill... woff2 swap
Size 56 KB
Load time 199 ms
Start 8.6 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 ~1 KB and ~2 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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
1
preload
1
dns-prefetch
—
prefetch
—

2 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
A+
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: max-age=3600, public
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

max-age=3600, public

DirectiveValueMeaning
max-age3600Cache for 1 hour
public—Any cache may store this response
Effective TTL: 3600 seconds
Network Waterfall
61 requests over 8793ms
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 FCP 2.2 s LCP 18.9 shttps://elte.hu// https://elte.hu/ — 200 — 42.3 KiB — 2.3 s — http/1.1https://elte.hu/sites/default/files/css/css_or-DI-kY7pBlcGCaa3hkhg-Yebxr7ne3k9cCvbkYU3E.css?delta=0&language=hu&theme=spred&include=eJxlj0GOwzAMAz_kxqe-x5AtNjaiyIYUt-jvd9EWuwF6IYbDE6lFammVnklCqYAjT1thaYfO-GWW4h7KBm5Ht2saMtemaVDZUlOGHilLL1s8l3CbIoUEymSf_azCJmQ9vvLMl36HWWOEQUar0age2eYgWf7NMnXMLM0rOPgwcMzk-GAFMeySSRUW_OkH9vd-PMfvNXXEP0oOslLDveHh8ZXL3nkKfgDQqHOH/sites/default/files/css/css_or-DI-... https://elte.hu/sites/default/files/css/css_or-DI-kY7pBlcGCaa3hkhg-Yebxr7ne3k9cCvbkYU3E.css?delta=0&language=hu&theme=spred&include=eJxlj0GOwzAMAz_kxqe-x5AtNjaiyIYUt-jvd9EWuwF6IYbDE6lFammVnklCqYAjT1thaYfO-GWW4h7KBm5Ht2saMtemaVDZUlOGHilLL1s8l3CbIoUEymSf_azCJmQ9vvLMl36HWWOEQUar0age2eYgWf7NMnXMLM0rOPgwcMzk-GAFMeySSRUW_OkH9vd-PMfvNXXEP0oOslLDveHh8ZXL3nkKfgDQqHOH — 200 — 19.1 KiB — 423 ms — http/1.1https://elte.hu/sites/default/files/css/css_cMV5NU9LfPCfDLU8F3l08qJqvhDmOISrWpm3QOWBbJM.css?delta=1&language=hu&theme=spred&include=eJxlj0GOwzAMAz_kxqe-x5AtNjaiyIYUt-jvd9EWuwF6IYbDE6lFammVnklCqYAjT1thaYfO-GWW4h7KBm5Ht2saMtemaVDZUlOGHilLL1s8l3CbIoUEymSf_azCJmQ9vvLMl36HWWOEQUar0age2eYgWf7NMnXMLM0rOPgwcMzk-GAFMeySSRUW_OkH9vd-PMfvNXXEP0oOslLDveHh8ZXL3nkKfgDQqHOH/sites/default/files/css/css_cMV5NU... https://elte.hu/sites/default/files/css/css_cMV5NU9LfPCfDLU8F3l08qJqvhDmOISrWpm3QOWBbJM.css?delta=1&language=hu&theme=spred&include=eJxlj0GOwzAMAz_kxqe-x5AtNjaiyIYUt-jvd9EWuwF6IYbDE6lFammVnklCqYAjT1thaYfO-GWW4h7KBm5Ht2saMtemaVDZUlOGHilLL1s8l3CbIoUEymSf_azCJmQ9vvLMl36HWWOEQUar0age2eYgWf7NMnXMLM0rOPgwcMzk-GAFMeySSRUW_OkH9vd-PMfvNXXEP0oOslLDveHh8ZXL3nkKfgDQqHOH — 200 — 40.3 KiB — 554 ms — http/1.1https://elte.hu/sites/default/files/js/js_9QxoZrPmodsZYOy194GQgMlxNYkU4ap2eh3F6Sp_wis.js?scope=header&delta=0&language=hu&theme=spred&include=eJx1UO1uAyEMeyHaPFIUwAV6KTkBp348fdm0VddO-2PZlpU4kUJSOKl5URcy0OG3ltD4grrRH-d47g46wMEaSEJA78UXLePOKo8JJhHt38y1xIQxozVtkrDP1ZCt8RDPWWrUtyFBFDVKcycJ8GYLr-UGpXfpTpvqb5S9Wlhob7lklhRzR6I04VMf5Sw3t6g0o290fW2I5KXjh2Z8nXfwUussOMoyXl32wo37Oh9XO-jFuENayE9BBZEe/sites/default/files/js/js_9QxoZrPm... https://elte.hu/sites/default/files/js/js_9QxoZrPmodsZYOy194GQgMlxNYkU4ap2eh3F6Sp_wis.js?scope=header&delta=0&language=hu&theme=spred&include=eJx1UO1uAyEMeyHaPFIUwAV6KTkBp348fdm0VddO-2PZlpU4kUJSOKl5URcy0OG3ltD4grrRH-d47g46wMEaSEJA78UXLePOKo8JJhHt38y1xIQxozVtkrDP1ZCt8RDPWWrUtyFBFDVKcycJ8GYLr-UGpXfpTpvqb5S9Wlhob7lklhRzR6I04VMf5Sw3t6g0o290fW2I5KXjh2Z8nXfwUussOMoyXl32wo37Oh9XO-jFuENayE9BBZEe — 200 — 7.5 KiB — 446 ms — http/1.1https://elte.hu/sites/default/files/inline-images/img_0.png/sites/default/files/inline-images/... 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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
28% of JavaScript execution is third-party
First-party Third-party 1742ms · 215KB · Ft6019/mo
Unattributable
Other
Costly
Execution 1251ms
Transfer 0 KB
Monthly Cost Ft4321/mo
www.skynettechnologies.com
Other
Costly
Execution 219ms
Transfer 100 KB
Unused 43%
Monthly Cost Ft758/mo
jsDelivr
CDN
Costly
Execution 135ms
Transfer 39 KB
Monthly Cost Ft466/mo
www.skynettechnologies.com
Other
Costly
Execution 85ms
Transfer 1 KB
Monthly Cost Ft293/mo
jsDelivr
CDN
Costly
Execution 52ms
Transfer 75 KB
Unused 78%
Monthly Cost Ft181/mo

These scripts may cost more than they're worth

  • Unattributable adds 1251ms and costs ~Ft4321/month
  • www.skynettechnologies.com adds 219ms and costs ~Ft758/month
  • jsDelivr adds 135ms and costs ~Ft466/month
  • www.skynettechnologies.com adds 85ms and costs ~Ft293/month
  • jsDelivr adds 52ms and costs ~Ft181/month

Unattributable takes 1251ms 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.skynettechnologies.com takes 219ms 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

jsDelivr takes 135ms 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.skynettechnologies.com takes 85ms 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

jsDelivr takes 52ms 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

78% of jsDelivr'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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