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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
95
GRADE
A
FIX
1
REVIEW
2
PASS
12
INFO
2

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

Mobile Desktop
93
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
85
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.
83
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.

2.41 s

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

2.71 s

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

5 ms

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

0.000

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

2.73 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.

2.71 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
17
12 PASS 2 REVIEW 1 FIX
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Info::
Last-Modified header present
Cache-Control

no-store, no-cache, must-revalidate, post-check=0, pre-check=0

DirectiveValueMeaning
no-store—Never cache this response
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
post-check0
pre-check0
B
Image Optimization
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Warning::
https://proxmox.com/images/proxmox/Proxmox_logo_st... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
8 images 32 KB
0 oversized -0 KB
6 legacy format
1 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

B
JS Execution Cost
945ms total JS execution
REVIEW
945ms total JS execution
Warning::
https://proxmox.com/en/: 528ms CPU time
Warning::
Unattributable: 295ms CPU time
Info::
https://proxmox.com/media/plg_n3tcookieconsent/js/...: 67ms CPU time
Info::
https://piwik.proxmox.com/matomo.js: 55ms CPU time
Info::
Third-party scripts: 350ms (37% of total)

Main Thread Breakdown

Other 39% Style & Layout 32% Script Evaluation 14% Parse HTML & CSS 6% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://proxmox.com/en/528ms15ms3ms1st
Unattributable295ms33ms0ms3rd
https://proxmox.com/media/plg_n3tcookieconsent/js/n3tconsentmanager.js?f6260167ms37ms3ms1st
https://piwik.proxmox.com/matomo.js55ms46ms9ms3rd
A+
Page Weight Budget
615 KB transferred, 43 requests
PASS
615 KB transferred, 43 requests
Info::
Page weighs 1.3 MB (615 KB transferred)
Info::
Fonts are 384 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 384 KB
Info::
43 HTTP requests
Info::
Estimated 0.13 g CO2 per page load
615 KB / 2.4 MB budget
615 KB transferred
43 requests
0.13 g CO2 per page load
Fonts 384.2 KiB 62%
CSS 87.6 KiB 14%
JavaScript 83.5 KiB 14%
Images 31.8 KiB 5%
HTML 15.3 KiB 2%
Other 11.5 KiB 2%
Other 600 B 0%
Other 226 B 0%
0 2.4 MB 4.9 MB
Under budget

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

A+
Third-Party Impact
4% third-party, 0 ms blocking
PASS
4% third-party, 0 ms blocking
Info::
Third-party code accounts for 4% of page weight (22.1 KiB of 614.7 KiB)
Info::
Third-party blocking time is low (0 ms)
96%
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
4 fonts (384 KB)
PASS
4 fonts (384 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

384 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 2.4 s LCP 2.7 shttps://proxmox.com/media/vendor/fontawesome-free/webfonts/fa-solid-900.woff2?v=4a6591fa-solid-900.woff2 https://proxmox.com/media/vendor/fontawesome-free/webfonts/fa-solid-900.woff2?v=4a6591 — 155.0 KiB — 345 ms — font-display: swaphttps://proxmox.com/media/templates/site/cassiopeia_proxmox/fonts/static/OpenSans/OpenSans-Regular.ttfOpenSans-Regular.ttf https://proxmox.com/media/templates/site/cassiopeia_proxmox/fonts/static/OpenSans/OpenSans-Regular.ttf — 76.7 KiB — 267 ms — font-display: swaphttps://proxmox.com/media/vendor/fontawesome-free/webfonts/fa-brands-400.woff2?v=cbcf42fa-brands-400.woff2 https://proxmox.com/media/vendor/fontawesome-free/webfonts/fa-brands-400.woff2?v=cbcf42 — 116.4 KiB — 271 ms — font-display: swaphttps://proxmox.com/media/templates/site/cassiopeia_proxmox/fonts/static/Lato/Lato-Regular.ttfLato-Regular.ttf https://proxmox.com/media/templates/site/cassiopeia_proxmox/fonts/static/Lato/Lato-Regular.ttf — 36.1 KiB — 197 ms — font-display: swap
fa-solid-900.woff2 woff2 swap
Size 155 KB
Load time 345 ms
Start 893 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
OpenSans-Regular.ttf ttf swap
Size 77 KB
Load time 267 ms
Start 893 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fa-brands-400.woff2 woff2 swap
Size 116 KB
Load time 271 ms
Start 893 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Lato-Regular.ttf ttf swap
Size 36 KB
Load time 197 ms
Start 894 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 ~170 KB and ~340 ms

A+
JS Bundles
17 scripts, 0 KB unused
PASS
17 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://proxmox.com/media/plg_n3tcookieconsent/js/n3tconsentmanager.js?f626015 KB—✓1st
https://proxmox.com/media/system/js/core.min.js?a3d8f84 KB—✓1st
https://proxmox.com/media/templates/site/cassiopeia/js/template.min.js?f626011 KB—✓1st
https://proxmox.com/media/vendor/bootstrap/js/offcanvas.min.js?5.3.82 KB—✓1st
https://proxmox.com/media/vendor/bootstrap/js/dropdown.min.js?5.3.83 KB—✓1st
https://proxmox.com/media/templates/site/cassiopeia_proxmox/js/user.js?f626011 KB—✓1st
https://proxmox.com/media/com_finder/js/finder.min.js?7557611 KB—✓1st
https://proxmox.com/media/vendor/bootstrap/js/collapse.min.js?5.3.82 KB—✓1st
https://proxmox.com/media/system/js/fields/validate.min.js?75ac5d4 KB—✓1st
https://proxmox.com/media/system/js/messages.min.js?9a48112 KB—✓1st
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+
Page Weight Inventory
43 resources · 615 KB · 0 KB savings available
PASS
43 resources · 615 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 615 KB
Info::
4 third-party resources (4% of weight)
43 resources · 614.7 KiB · 4 third-party Within 1MB page-weight target
Font 62% · 384.2 KiB
CSS 14% · 87.6 KiB
JavaScript 14% · 83.5 KiB
Image 7% · 42.5 KiB
Document 3% · 16.1 KiB
Other 0% · 826 B
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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: firstcolo

Network Waterfall
43 requests over 1469ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.4 s LCP 2.7 shttps://proxmox.com// https://proxmox.com/ — 301 — 856 B — 341 ms — http/1.1https://proxmox.com/en//en/ https://proxmox.com/en/ — 200 — 15.3 KiB — 202 ms — http/1.1https://proxmox.com/media/plg_n3tcookieconsent/js/n3tconsentmanager.js?f62601/media/plg_n3tcookieconsent/js/n3tc... https://proxmox.com/media/plg_n3tcookieconsent/js/n3tconsentmanager.js?f62601 — 200 — 5.2 KiB — 85 ms — http/1.1https://proxmox.com/media/system/css/joomla-fontawesome.min.css?f62601/media/system/css/joomla-fontawesom... https://proxmox.com/media/system/css/joomla-fontawesome.min.css?f62601 — 200 — 27.3 KiB — 132 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia/css/global/colors_standard.min.css?f62601/media/templates/site/cassiopeia/cs... https://proxmox.com/media/templates/site/cassiopeia/css/global/colors_standard.min.css?f62601 — 200 — 676 B — 168 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia/css/template.min.css?f62601/media/templates/site/cassiopeia/cs... https://proxmox.com/media/templates/site/cassiopeia/css/template.min.css?f62601 — 200 — 38.5 KiB — 219 ms — http/1.1https://proxmox.com/media/mod_languages/css/template.min.css?f62601/media/mod_languages/css/template.m... https://proxmox.com/media/mod_languages/css/template.min.css?f62601 — 200 — 726 B — 242 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia/css/vendor/joomla-custom-elements/joomla-alert.min.css?0.4.1/media/templates/site/cassiopeia/cs... https://proxmox.com/media/templates/site/cassiopeia/css/vendor/joomla-custom-elements/joomla-alert.min.css?0.4.1 — 200 — 2.0 KiB — 243 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia_proxmox/css/user.css?f62601/media/templates/site/cassiopeia_pr... https://proxmox.com/media/templates/site/cassiopeia_proxmox/css/user.css?f62601 — 200 — 9.0 KiB — 245 ms — http/1.1https://proxmox.com/media/plg_system_jcepro/site/css/content.min.css?86aa0286b6232c4a5b58f892ce080277/media/plg_system_jcepro/site/css/c... https://proxmox.com/media/plg_system_jcepro/site/css/content.min.css?86aa0286b6232c4a5b58f892ce080277 — 200 — 1.5 KiB — 249 ms — http/1.1https://proxmox.com/media/plg_n3tcookieconsent/css/n3tconsentmanager.min.css?f62601/media/plg_n3tcookieconsent/css/n3t... https://proxmox.com/media/plg_n3tcookieconsent/css/n3tconsentmanager.min.css?f62601 — 200 — 6.5 KiB — 251 ms — http/1.1https://proxmox.com/media/system/js/core.min.js?a3d8f8/media/system/js/core.min.js?a3d8f8 https://proxmox.com/media/system/js/core.min.js?a3d8f8 — 200 — 3.6 KiB — 299 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia/js/template.min.js?f62601/media/templates/site/cassiopeia/js... https://proxmox.com/media/templates/site/cassiopeia/js/template.min.js?f62601 — 200 — 1.0 KiB — 323 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/offcanvas.min.js?5.3.8/media/vendor/bootstrap/js/offcanva... https://proxmox.com/media/vendor/bootstrap/js/offcanvas.min.js?5.3.8 — 200 — 1.9 KiB — 326 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/dropdown.min.js?5.3.8/media/vendor/bootstrap/js/dropdown... https://proxmox.com/media/vendor/bootstrap/js/dropdown.min.js?5.3.8 — 200 — 2.9 KiB — 334 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia_proxmox/js/user.js?f62601/media/templates/site/cassiopeia_pr... https://proxmox.com/media/templates/site/cassiopeia_proxmox/js/user.js?f62601 — 200 — 833 B — 334 ms — http/1.1https://proxmox.com/media/com_finder/js/finder.min.js?755761/media/com_finder/js/finder.min.js?... https://proxmox.com/media/com_finder/js/finder.min.js?755761 — 200 — 1.2 KiB — 379 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/collapse.min.js?5.3.8/media/vendor/bootstrap/js/collapse... https://proxmox.com/media/vendor/bootstrap/js/collapse.min.js?5.3.8 — 200 — 1.9 KiB — 409 ms — http/1.1https://proxmox.com/media/system/js/fields/validate.min.js?75ac5d/media/system/js/fields/validate.mi... https://proxmox.com/media/system/js/fields/validate.min.js?75ac5d — 200 — 3.6 KiB — 410 ms — http/1.1https://proxmox.com/media/system/js/messages.min.js?9a4811/media/system/js/messages.min.js?9a... https://proxmox.com/media/system/js/messages.min.js?9a4811 — 200 — 2.2 KiB — 410 ms — http/1.1https://proxmox.com/media/vendor/joomla-custom-elements/css/joomla-alert.css/media/vendor/joomla-custom-element... https://proxmox.com/media/vendor/joomla-custom-elements/css/joomla-alert.css — 200 — 1.4 KiB — 83 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/dom.min.js?5.3.8/media/vendor/bootstrap/js/dom.min.... https://proxmox.com/media/vendor/bootstrap/js/dom.min.js?5.3.8 — 200 — 7.0 KiB — 91 ms — http/1.1https://proxmox.com/images/proxmox/Proxmox_logo_standard_hex_400px.png/images/proxmox/Proxmox_logo_standa... https://proxmox.com/images/proxmox/Proxmox_logo_standard_hex_400px.png — 200 — 7.6 KiB — 85 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/popper.min.js?5.3.8/media/vendor/bootstrap/js/popper.m... https://proxmox.com/media/vendor/bootstrap/js/popper.min.js?5.3.8 — 200 — 8.0 KiB — 125 ms — http/1.1https://piwik.proxmox.com/matomo.jspiwik.proxmox.com/matomo.js https://piwik.proxmox.com/matomo.js — 200 — 21.9 KiB — 455 ms — http/1.1data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='hsl%280, 0%,…www.w3.org/2000/svg' viewBox='0 0 1... data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='hsl%280, 0%,… — 200 — 0 B — 0 ms — datahttps://proxmox.com/images/proxmox/proxmox-start-page-banner-orange.svg/images/proxmox/proxmox-start-page-... https://proxmox.com/images/proxmox/proxmox-start-page-banner-orange.svg — 200 — 3.7 KiB — 120 ms — http/1.1https://proxmox.com/images/proxmox/Proxmox-logo-white-orange-800.png/images/proxmox/Proxmox-logo-white-... https://proxmox.com/images/proxmox/Proxmox-logo-white-orange-800.png — 200 — 17.1 KiB — 159 ms — http/1.1https://proxmox.com/media/vendor/fontawesome-free/webfonts/fa-solid-900.woff2?v=4a6591/media/vendor/fontawesome-free/webf... https://proxmox.com/media/vendor/fontawesome-free/webfonts/fa-solid-900.woff2?v=4a6591 — 200 — 155.0 KiB — 345 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia_proxmox/fonts/static/OpenSans/OpenSans-Regular.ttf/media/templates/site/cassiopeia_pr... https://proxmox.com/media/templates/site/cassiopeia_proxmox/fonts/static/OpenSans/OpenSans-Regular.ttf — 200 — 76.7 KiB — 267 ms — http/1.1
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.4 s LCP 2.7 shttps://proxmox.com// https://proxmox.com/ — 301 — 856 B — 341 ms — http/1.1https://proxmox.com/en//en/ https://proxmox.com/en/ — 200 — 15.3 KiB — 202 ms — http/1.1https://proxmox.com/media/plg_n3tcookieconsent/js/n3tconsentmanager.js?f62601/media/plg_n3tcookieconsent/js/n3tc... https://proxmox.com/media/plg_n3tcookieconsent/js/n3tconsentmanager.js?f62601 — 200 — 5.2 KiB — 85 ms — http/1.1https://proxmox.com/media/system/css/joomla-fontawesome.min.css?f62601/media/system/css/joomla-fontawesom... https://proxmox.com/media/system/css/joomla-fontawesome.min.css?f62601 — 200 — 27.3 KiB — 132 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia/css/global/colors_standard.min.css?f62601/media/templates/site/cassiopeia/cs... https://proxmox.com/media/templates/site/cassiopeia/css/global/colors_standard.min.css?f62601 — 200 — 676 B — 168 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia/css/template.min.css?f62601/media/templates/site/cassiopeia/cs... https://proxmox.com/media/templates/site/cassiopeia/css/template.min.css?f62601 — 200 — 38.5 KiB — 219 ms — http/1.1https://proxmox.com/media/mod_languages/css/template.min.css?f62601/media/mod_languages/css/template.m... https://proxmox.com/media/mod_languages/css/template.min.css?f62601 — 200 — 726 B — 242 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia/css/vendor/joomla-custom-elements/joomla-alert.min.css?0.4.1/media/templates/site/cassiopeia/cs... https://proxmox.com/media/templates/site/cassiopeia/css/vendor/joomla-custom-elements/joomla-alert.min.css?0.4.1 — 200 — 2.0 KiB — 243 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia_proxmox/css/user.css?f62601/media/templates/site/cassiopeia_pr... https://proxmox.com/media/templates/site/cassiopeia_proxmox/css/user.css?f62601 — 200 — 9.0 KiB — 245 ms — http/1.1https://proxmox.com/media/plg_system_jcepro/site/css/content.min.css?86aa0286b6232c4a5b58f892ce080277/media/plg_system_jcepro/site/css/c... https://proxmox.com/media/plg_system_jcepro/site/css/content.min.css?86aa0286b6232c4a5b58f892ce080277 — 200 — 1.5 KiB — 249 ms — http/1.1https://proxmox.com/media/plg_n3tcookieconsent/css/n3tconsentmanager.min.css?f62601/media/plg_n3tcookieconsent/css/n3t... https://proxmox.com/media/plg_n3tcookieconsent/css/n3tconsentmanager.min.css?f62601 — 200 — 6.5 KiB — 251 ms — http/1.1https://proxmox.com/media/system/js/core.min.js?a3d8f8/media/system/js/core.min.js?a3d8f8 https://proxmox.com/media/system/js/core.min.js?a3d8f8 — 200 — 3.6 KiB — 299 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia/js/template.min.js?f62601/media/templates/site/cassiopeia/js... https://proxmox.com/media/templates/site/cassiopeia/js/template.min.js?f62601 — 200 — 1.0 KiB — 323 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/offcanvas.min.js?5.3.8/media/vendor/bootstrap/js/offcanva... https://proxmox.com/media/vendor/bootstrap/js/offcanvas.min.js?5.3.8 — 200 — 1.9 KiB — 326 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/dropdown.min.js?5.3.8/media/vendor/bootstrap/js/dropdown... https://proxmox.com/media/vendor/bootstrap/js/dropdown.min.js?5.3.8 — 200 — 2.9 KiB — 334 ms — http/1.1https://proxmox.com/media/templates/site/cassiopeia_proxmox/js/user.js?f62601/media/templates/site/cassiopeia_pr... https://proxmox.com/media/templates/site/cassiopeia_proxmox/js/user.js?f62601 — 200 — 833 B — 334 ms — http/1.1https://proxmox.com/media/com_finder/js/finder.min.js?755761/media/com_finder/js/finder.min.js?... https://proxmox.com/media/com_finder/js/finder.min.js?755761 — 200 — 1.2 KiB — 379 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/collapse.min.js?5.3.8/media/vendor/bootstrap/js/collapse... https://proxmox.com/media/vendor/bootstrap/js/collapse.min.js?5.3.8 — 200 — 1.9 KiB — 409 ms — http/1.1https://proxmox.com/media/system/js/fields/validate.min.js?75ac5d/media/system/js/fields/validate.mi... https://proxmox.com/media/system/js/fields/validate.min.js?75ac5d — 200 — 3.6 KiB — 410 ms — http/1.1https://proxmox.com/media/system/js/messages.min.js?9a4811/media/system/js/messages.min.js?9a... https://proxmox.com/media/system/js/messages.min.js?9a4811 — 200 — 2.2 KiB — 410 ms — http/1.1https://proxmox.com/media/vendor/joomla-custom-elements/css/joomla-alert.css/media/vendor/joomla-custom-element... https://proxmox.com/media/vendor/joomla-custom-elements/css/joomla-alert.css — 200 — 1.4 KiB — 83 ms — http/1.1https://proxmox.com/media/vendor/bootstrap/js/dom.min.js?5.3.8/media/vendor/bootstrap/js/dom.min.... https://proxmox.com/media/vendor/bootstrap/js/dom.min.js?5.3.8 — 200 — 7.0 KiB — 91 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
37% of JavaScript execution is third-party
First-party Third-party 350ms · 22KB · £4/mo
Unattributable
Other
Costly
Execution 295ms
Transfer 0 KB
Monthly Cost £3/mo
piwik.proxmox.com
Other
Optional
Execution 55ms
Transfer 22 KB
Monthly Cost £1/mo

These scripts may cost more than they're worth

  • Unattributable adds 295ms and costs ~£3/month

Unattributable takes 295ms 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

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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