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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
4
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
65
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
64
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
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.

1.07 s

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

2.44 s

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

0 ms

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

0.443

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

1.16 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.

2.49 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 2 REVIEW 4 FIX
D
Page Weight Budget
Action
2.3 MB transferred, 63 requests
FIX
2.3 MB transferred, 63 requests
Info::
Page weighs 2.8 MB (2.3 MB transferred)
Warning::
Images are 1.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.9 MB
Info::
63 HTTP requests
Info::
Estimated 0.48 g CO2 per page load
2.3 MB / 2.4 MB budget
2.3 MB transferred
63 requests
0.48 g CO2 per page load
Images 1.9 MiB 83%
JavaScript 188.1 KiB 8%
Fonts 130.3 KiB 6%
CSS 61.3 KiB 3%
HTML 13.5 KiB 1%
Other 2.1 KiB 0%
Other 533 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

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 (2.3 MiB of 2.3 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
63 resources · 2.3 MB · 37 KB savings available
FIX
63 resources · 2.3 MB · 37 KB savings available
Warning::
Page weight 1.3 MB over 1MB target
Got: 2.3 MB Expected: ≤ 1 MB
Warning::
62 third-party resources (100% of weight)
Info::
3 resources over 200KB
63 resources · 2.3 MiB · 62 third-party 1.3 MiB over 1MB target
Image 83% · 1.9 MiB
JavaScript 8% · 188.1 KiB
Font 6% · 130.3 KiB
CSS 3% · 61.3 KiB
Document 1% · 14.1 KiB
Other 0% · 242 B

~37.3 KiB of savings available

Remove unused JavaScript: 37.3 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
15 images, 0 KB saveable
REVIEW
15 images, 0 KB saveable
Warning::
https://www.cnr.it/sites/all/themes/custom/cnr03_t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cnr.it/sites/all/themes/custom/cnr03_t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cnr.it/sites/all/themes/custom/cnr03_t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cnr.it/sites/all/themes/custom/cnr03_t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cnr.it/sites/all/themes/custom/cnr03_t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cnr.it/sites/all/themes/custom/cnr03_t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cnr.it/sites/all/themes/custom/cnr03_t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
15 images 1.9 MB
0 oversized -0 KB
15 legacy format
7 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

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+
JS Execution Cost
285ms total JS execution
PASS
285ms total JS execution
Info::
https://www.cnr.it//: 114ms CPU time
Info::
Unattributable: 91ms CPU time
Info::
https://www.cnr.it/sites/all/modules/contrib/jquer...: 81ms CPU time
Warning::
Third-party scripts: 285ms (100% of total)

Main Thread Breakdown

Other 37% Script Evaluation 28% Style & Layout 21% Rendering 7% Parse HTML & CSS 4% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
https://www.cnr.it//114ms2ms1ms3rd
Unattributable91ms1ms0ms3rd
https://www.cnr.it/sites/all/modules/contrib/jquery_update/replace/jquery/1.9/jquery.min.js?v=1.9.181ms51ms3ms3rd
A+
Font Loading
4 fonts (130 KB)
PASS
4 fonts (130 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

130 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 2.5 s FCP 1.1 s LCP 2.4 shttps://www.cnr.it/sites/all/themes/custom/cnr03_theme/fonts/roboto-v29-latin/roboto-v29-latin-regular.woff2roboto-v29-latin-regula... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/fonts/roboto-v29-latin/roboto-v29-latin-regular.woff2 — 15.6 KiB — 86 ms — font-display: swaphttps://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/fonts/glyphicons-halflings-regular.woffglyphicons-halflings-re... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/fonts/glyphicons-halflings-regular.woff — 23.1 KiB — 113 ms — font-display: swaphttps://www.cnr.it/sites/all/themes/custom/cnr03_theme/fonts/roboto-v29-latin/roboto-v29-latin-500.woff2roboto-v29-latin-500.woff2 https://www.cnr.it/sites/all/themes/custom/cnr03_theme/fonts/roboto-v29-latin/roboto-v29-latin-500.woff2 — 15.9 KiB — 114 ms — font-display: swaphttps://www.cnr.it/sites/all/libraries/font-awesome/4.7.0/fonts/fontawesome-webfont.woff2?v=4.7.0fontawesome-webfont.woff2 https://www.cnr.it/sites/all/libraries/font-awesome/4.7.0/fonts/fontawesome-webfont.woff2?v=4.7.0 — 75.7 KiB — 197 ms — font-display: swap
roboto-v29-latin-regula... woff2 swap
Size 16 KB
Load time 86 ms
Start 759 ms
Risk FOUT — text flashes from fallback to web font
glyphicons-halflings-re... woff swap
Size 23 KB
Load time 113 ms
Start 759 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
roboto-v29-latin-500.woff2 woff2 swap
Size 16 KB
Load time 114 ms
Start 760 ms
Risk FOUT — text flashes from fallback to web font
fontawesome-webfont.woff2 woff2 swap
Size 76 KB
Load time 197 ms
Start 821 ms
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 ~7 KB and ~14 ms

A
JS Bundles
29 scripts, 37 KB unused
PASS
29 scripts, 37 KB unused
Warning::
https://metrics.cedrc.cnr.it/matomo.js: 37 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.cnr.it/misc/drupal.js?tdslzg: unminified — 5 KB could be saved
Info::
Total unused JavaScript: 37 KB
37 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://metrics.cedrc.cnr.it/matomo.js63 KB37 KB (60%)✓3rd
https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/popover.js?tdslzg2 KB—✓3rd
https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/js/modernizr.custom.min.js?tdslzg1 KB—✓3rd
https://www.cnr.it/misc/jquery.once.js?v=1.22 KB—✓3rd
https://www.cnr.it/misc/drupal.js?tdslzg7 KB—✗3rd
https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/scrollspy.js?tdslzg2 KB—✓3rd
https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/affix.js?tdslzg2 KB—✓3rd
https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/alert.js?tdslzg1 KB—✓3rd
https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/button.js?tdslzg2 KB—✓3rd
https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/carousel.js?tdslzg2 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

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
63 requests over 1335ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.1 s LCP 2.4 shttps://cnr.it// https://cnr.it/ — 301 — 289 B — 150 ms — http/1.1https://www.cnr.it//www.cnr.it// https://www.cnr.it// — 200 — 13.5 KiB — 209 ms — http/1.1https://www.cnr.it/modules/system/system.base.css?tdslzgwww.cnr.it/modules/system/system.ba... https://www.cnr.it/modules/system/system.base.css?tdslzg — 200 — 2.3 KiB — 65 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/date/date_api/date.css?tdslzgwww.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/date/date_api/date.css?tdslzg — 200 — 1.6 KiB — 102 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/date/date_popup/themes/datepicker.1.7.css?tdslzgwww.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/date/date_popup/themes/datepicker.1.7.css?tdslzg — 200 — 1.3 KiB — 108 ms — http/1.1https://www.cnr.it/modules/field/theme/field.css?tdslzgwww.cnr.it/modules/field/theme/fiel... https://www.cnr.it/modules/field/theme/field.css?tdslzg — 200 — 689 B — 111 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/views/css/views.css?tdslzgwww.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/views/css/views.css?tdslzg — 200 — 763 B — 111 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/ctools/css/ctools.css?tdslzgwww.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/ctools/css/ctools.css?tdslzg — 200 — 702 B — 111 ms — http/1.1https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/css/magnific-popup.css?tdslzgwww.cnr.it/sites/all/libraries/medi... https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/css/magnific-popup.css?tdslzg — 200 — 2.4 KiB — 111 ms — http/1.1https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/css/mediaBoxes.css?tdslzgwww.cnr.it/sites/all/libraries/medi... https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/css/mediaBoxes.css?tdslzg — 200 — 9.1 KiB — 139 ms — http/1.1https://www.cnr.it/sites/all/libraries/font-awesome/4.7.0/css/font-awesome.min.css?tdslzgwww.cnr.it/sites/all/libraries/font... https://www.cnr.it/sites/all/libraries/font-awesome/4.7.0/css/font-awesome.min.css?tdslzg — 200 — 7.4 KiB — 150 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/css/style.min.css?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/css/style.min.css?tdslzg — 200 — 35.2 KiB — 224 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/jquery_update/replace/jquery/1.9/jquery.min.js?v=1.9.1www.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/jquery_update/replace/jquery/1.9/jquery.min.js?v=1.9.1 — 200 — 32.5 KiB — 221 ms — http/1.1https://www.cnr.it/misc/jquery-extend-3.4.0.js?v=1.9.1www.cnr.it/misc/jquery-extend-3.4.0... https://www.cnr.it/misc/jquery-extend-3.4.0.js?v=1.9.1 — 200 — 1.8 KiB — 150 ms — http/1.1https://www.cnr.it/misc/jquery-html-prefilter-3.5.0-backport.js?v=1.9.1www.cnr.it/misc/jquery-html-prefilt... https://www.cnr.it/misc/jquery-html-prefilter-3.5.0-backport.js?v=1.9.1 — 200 — 4.8 KiB — 150 ms — http/1.1https://www.cnr.it/misc/jquery.once.js?v=1.2www.cnr.it/misc/jquery.once.js?v=1.... https://www.cnr.it/misc/jquery.once.js?v=1.2 — 200 — 1.5 KiB — 175 ms — http/1.1https://www.cnr.it/misc/drupal.js?tdslzgwww.cnr.it/misc/drupal.js?tdslzg https://www.cnr.it/misc/drupal.js?tdslzg — 200 — 7.4 KiB — 188 ms — http/1.1https://www.cnr.it/sites/default/files/public/languages/it_xynrdDYaqrWADU-W102U4P1nQAulEUFU7Ab1wg2PLIg.js?tdslzgwww.cnr.it/sites/default/files/publ... https://www.cnr.it/sites/default/files/public/languages/it_xynrdDYaqrWADU-W102U4P1nQAulEUFU7Ab1wg2PLIg.js?tdslzg — 200 — 2.1 KiB — 189 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/affix.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/affix.js?tdslzg — 200 — 1.9 KiB — 190 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/alert.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/alert.js?tdslzg — 200 — 1.4 KiB — 212 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/button.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/button.js?tdslzg — 200 — 1.6 KiB — 228 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/carousel.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/carousel.js?tdslzg — 200 — 2.5 KiB — 228 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/collapse.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/collapse.js?tdslzg — 200 — 1.9 KiB — 228 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/dropdown.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/dropdown.js?tdslzg — 200 — 1.9 KiB — 249 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/modal.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/modal.js?tdslzg — 200 — 2.7 KiB — 256 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/tooltip.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/tooltip.js?tdslzg — 200 — 4.4 KiB — 257 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/popover.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/popover.js?tdslzg — 200 — 1.7 KiB — 266 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/scrollspy.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/scrollspy.js?tdslzg — 200 — 1.9 KiB — 266 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/tab.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/tab.js?tdslzg — 200 — 1.6 KiB — 266 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/transition.js?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/bootstrap/js/transition.js?tdslzg — 200 — 1.2 KiB — 284 ms — http/1.1
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.1 s LCP 2.4 shttps://cnr.it// https://cnr.it/ — 301 — 289 B — 150 ms — http/1.1https://www.cnr.it//www.cnr.it// https://www.cnr.it// — 200 — 13.5 KiB — 209 ms — http/1.1https://www.cnr.it/modules/system/system.base.css?tdslzgwww.cnr.it/modules/system/system.ba... https://www.cnr.it/modules/system/system.base.css?tdslzg — 200 — 2.3 KiB — 65 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/date/date_api/date.css?tdslzgwww.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/date/date_api/date.css?tdslzg — 200 — 1.6 KiB — 102 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/date/date_popup/themes/datepicker.1.7.css?tdslzgwww.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/date/date_popup/themes/datepicker.1.7.css?tdslzg — 200 — 1.3 KiB — 108 ms — http/1.1https://www.cnr.it/modules/field/theme/field.css?tdslzgwww.cnr.it/modules/field/theme/fiel... https://www.cnr.it/modules/field/theme/field.css?tdslzg — 200 — 689 B — 111 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/views/css/views.css?tdslzgwww.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/views/css/views.css?tdslzg — 200 — 763 B — 111 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/ctools/css/ctools.css?tdslzgwww.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/ctools/css/ctools.css?tdslzg — 200 — 702 B — 111 ms — http/1.1https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/css/magnific-popup.css?tdslzgwww.cnr.it/sites/all/libraries/medi... https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/css/magnific-popup.css?tdslzg — 200 — 2.4 KiB — 111 ms — http/1.1https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/css/mediaBoxes.css?tdslzgwww.cnr.it/sites/all/libraries/medi... https://www.cnr.it/sites/all/libraries/mediaboxes/plugins/css/mediaBoxes.css?tdslzg — 200 — 9.1 KiB — 139 ms — http/1.1https://www.cnr.it/sites/all/libraries/font-awesome/4.7.0/css/font-awesome.min.css?tdslzgwww.cnr.it/sites/all/libraries/font... https://www.cnr.it/sites/all/libraries/font-awesome/4.7.0/css/font-awesome.min.css?tdslzg — 200 — 7.4 KiB — 150 ms — http/1.1https://www.cnr.it/sites/all/themes/custom/cnr03_theme/css/style.min.css?tdslzgwww.cnr.it/sites/all/themes/custom/... https://www.cnr.it/sites/all/themes/custom/cnr03_theme/css/style.min.css?tdslzg — 200 — 35.2 KiB — 224 ms — http/1.1https://www.cnr.it/sites/all/modules/contrib/jquery_update/replace/jquery/1.9/jquery.min.js?v=1.9.1www.cnr.it/sites/all/modules/contri... https://www.cnr.it/sites/all/modules/contrib/jquery_update/replace/jquery/1.9/jquery.min.js?v=1.9.1 — 200 — 32.5 KiB — 221 ms — http/1.1https://www.cnr.it/misc/jquery-extend-3.4.0.js?v=1.9.1www.cnr.it/misc/jquery-extend-3.4.0... https://www.cnr.it/misc/jquery-extend-3.4.0.js?v=1.9.1 — 200 — 1.8 KiB — 150 ms — 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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 285ms · 46KB · €3/mo
www.cnr.it
Other
Optional
Execution 114ms
Transfer 13 KB
Monthly Cost €1/mo
Unattributable
Other
Optional
Execution 91ms
Transfer 0 KB
Monthly Cost €1/mo
www.cnr.it
Other
Optional
Execution 81ms
Transfer 32 KB
Monthly Cost €1/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

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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