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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
2
REVIEW
2
PASS
9
INFO
2

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

Mobile Desktop
91
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
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.
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.

558 ms

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

598 ms

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.

0.189

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

558 ms

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

598 ms

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
9 PASS 2 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (892.3 KiB of 892.3 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
7 images, 0 KB saveable
REVIEW
7 images, 0 KB saveable
Warning::
https://www.php.net/images/php8/logo_php8_5.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
7 images 4 KB
0 oversized -0 KB
4 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

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

Green Hosting

No green hosting detected

A
Page Weight Budget
892 KB transferred, 46 requests
PASS
892 KB transferred, 46 requests
Info::
Page weighs 3.1 MB (892 KB transferred)
Info::
Fonts are 398 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 398 KB
Info::
46 HTTP requests
Info::
Estimated 0.18 g CO2 per page load
892 KB / 2.4 MB budget
892 KB transferred
46 requests
0.18 g CO2 per page load
Fonts 398.1 KiB 45%
Other 264.8 KiB 30%
JavaScript 109.4 KiB 12%
Other 86.4 KiB 10%
CSS 14.8 KiB 2%
HTML 9.0 KiB 1%
Other 5.6 KiB 1%
Images 4.0 KiB 0%
Other 110 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+
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
225ms total JS execution
PASS
225ms total JS execution
Info::
Unattributable: 149ms CPU time
Info::
https://www.php.net/: 76ms CPU time
Warning::
Third-party scripts: 225ms (100% of total)

Main Thread Breakdown

Other 34% Script Evaluation 34% Style & Layout 18% Rendering 4% Garbage Collection 4%
ScriptTotalScriptingParse/CompileParty
Unattributable149ms55ms0ms3rd
https://www.php.net/76ms2ms0ms3rd
A+
Font Loading
4 fonts (398 KB)
PASS
4 fonts (398 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

398 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 558 ms LCP 598 mshttps://www.php.net/fonts/Fira/woff2/FiraSans-Book.woff2FiraSans-Book.woff2 https://www.php.net/fonts/Fira/woff2/FiraSans-Book.woff2 — 129.0 KiB — 80 ms — font-display: swaphttps://www.php.net/fonts/Fira/woff2/FiraSans-Medium.woff2FiraSans-Medium.woff2 https://www.php.net/fonts/Fira/woff2/FiraSans-Medium.woff2 — 130.0 KiB — 92 ms — font-display: swaphttps://www.php.net/fonts/Font-Awesome/font/fontello.woff2?96103027fontello.woff2 https://www.php.net/fonts/Font-Awesome/font/fontello.woff2?96103027 — 3.1 KiB — 78 ms — font-display: swaphttps://www.php.net/fonts/Fira/woff2/FiraSans-BookItalic.woff2FiraSans-BookItalic.woff2 https://www.php.net/fonts/Fira/woff2/FiraSans-BookItalic.woff2 — 136.0 KiB — 90 ms — font-display: swap
FiraSans-Book.woff2 woff2 swap
Size 129 KB
Load time 80 ms
Start 227 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
FiraSans-Medium.woff2 woff2 swap
Size 130 KB
Load time 92 ms
Start 227 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
fontello.woff2 woff2 swap
Size 3 KB
Load time 78 ms
Start 227 ms
Risk FOUT — text flashes from fallback to web font
FiraSans-BookItalic.woff2 woff2 swap
Size 136 KB
Load time 90 ms
Start 229 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
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 ~197 KB and ~394 ms

A+
JS Bundles
10 scripts, 32 KB unused
PASS
10 scripts, 32 KB unused
Warning::
https://www.php.net/js/php-web.mjs: 32 KB unused (100%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 32 KB
32 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.php.net/js/php-web.mjs32 KB32 KB (100%)✓3rd
https://www.php.net/cached.php?t=1759587603&f=/js/interactive-examples.js1 KB—✓3rd
https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery-3.6.0.min.js30 KB—✓3rd
https://www.php.net/cached.php?t=1756715876&f=/js/ext/FuzzySearch.min.js8 KB—✓3rd
https://www.php.net/cached.php?t=1756715876&f=/js/ext/mousetrap.min.js3 KB—✓3rd
https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery.scrollTo.min.js2 KB—✓3rd
https://analytics.php.net/matomo.js22 KB—✓3rd
https://www.php.net/cached.php?t=1768309801&f=/js/search.js4 KB—✓3rd
https://www.php.net/cached.php?t=1768309801&f=/js/common.js8 KB—✗3rd
https://www.php.net/js/search-index.php?lang=en265 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
A
Page Weight Inventory
46 resources · 892 KB · 32 KB savings available
PASS
46 resources · 892 KB · 32 KB savings available
Info::
Within 1MB page-weight target
Got: 892 KB
Warning::
45 third-party resources (100% of weight)
Info::
1 resources over 200KB
46 resources · 892.3 KiB · 45 third-party Within 1MB page-weight target
Font 45% · 398.1 KiB
JavaScript 42% · 374.3 KiB
Document 11% · 95.6 KiB
CSS 2% · 14.8 KiB
Image 1% · 9.6 KiB
Other 0% · 110 B

~31.5 KiB of savings available

Remove unused JavaScript: 31.5 KiB
Network Waterfall
46 requests over 439ms
INFO
0 ms 200 ms 400 ms 600 ms FCP 558 ms LCP 598 mshttps://php.net// https://php.net/ — 301 — 81 B — 92 ms — h2https://www.php.net/www.php.net/ https://www.php.net/ — 200 — 9.0 KiB — 34 ms — h2https://www.php.net/cached.php?t=1756715876&f=/fonts/Fira/fira.csswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/fonts/Fira/fira.css — 200 — 700 B — 39 ms — h2https://www.php.net/cached.php?t=1756715876&f=/fonts/Font-Awesome/css/fontello.csswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/fonts/Font-Awesome/css/fontello.css — 200 — 1.1 KiB — 40 ms — h2https://www.php.net/cached.php?t=1763585401&f=/styles/theme-base.csswww.php.net/cached.php?t=1763585401... https://www.php.net/cached.php?t=1763585401&f=/styles/theme-base.css — 200 — 6.6 KiB — 42 ms — h2https://www.php.net/cached.php?t=1763575802&f=/styles/theme-medium.csswww.php.net/cached.php?t=1763575802... https://www.php.net/cached.php?t=1763575802&f=/styles/theme-medium.css — 200 — 5.0 KiB — 43 ms — h2https://www.php.net/cached.php?t=1756715876&f=/styles/home.csswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/styles/home.css — 200 — 1.3 KiB — 44 ms — h2https://www.php.net/images/php8/logo_php8_5.svgwww.php.net/images/php8/logo_php8_5... https://www.php.net/images/php8/logo_php8_5.svg — 200 — 1.7 KiB — 69 ms — h2https://www.php.net/cached.php?t=1759587603&f=/js/interactive-examples.jswww.php.net/cached.php?t=1759587603... https://www.php.net/cached.php?t=1759587603&f=/js/interactive-examples.js — 200 — 1.4 KiB — 39 ms — h2https://www.php.net/images/logos/php-logo-white.svgwww.php.net/images/logos/php-logo-w... https://www.php.net/images/logos/php-logo-white.svg — 200 — 752 B — 32 ms — h2https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery-3.6.0.min.jswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery-3.6.0.min.js — 200 — 30.5 KiB — 35 ms — h2https://www.php.net/cached.php?t=1756715876&f=/js/ext/FuzzySearch.min.jswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/js/ext/FuzzySearch.min.js — 200 — 7.8 KiB — 54 ms — h2https://www.php.net/cached.php?t=1756715876&f=/js/ext/mousetrap.min.jswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/js/ext/mousetrap.min.js — 200 — 2.6 KiB — 66 ms — h2https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery.scrollTo.min.jswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery.scrollTo.min.js — 200 — 1.7 KiB — 66 ms — h2https://analytics.php.net/matomo.jsanalytics.php.net/matomo.js https://analytics.php.net/matomo.js — 200 — 21.7 KiB — 71 ms — h2https://www.php.net/cached.php?t=1768309801&f=/js/search.jswww.php.net/cached.php?t=1768309801... https://www.php.net/cached.php?t=1768309801&f=/js/search.js — 200 — 4.2 KiB — 46 ms — h2https://www.php.net/cached.php?t=1768309801&f=/js/common.jswww.php.net/cached.php?t=1768309801... https://www.php.net/cached.php?t=1768309801&f=/js/common.js — 200 — 7.8 KiB — 40 ms — h2https://www.php.net/images/to-top@2x.pngwww.php.net/images/to-top@2x.png https://www.php.net/images/to-top@2x.png — 200 — 1.2 KiB — 36 ms — h2https://www.php.net/images/bg-texture-00.svgwww.php.net/images/bg-texture-00.sv... https://www.php.net/images/bg-texture-00.svg — 200 — 363 B — 35 ms — h2https://www.php.net/fonts/Fira/woff2/FiraSans-Book.woff2www.php.net/fonts/Fira/woff2/FiraSa... https://www.php.net/fonts/Fira/woff2/FiraSans-Book.woff2 — 200 — 129.0 KiB — 80 ms — h2https://www.php.net/fonts/Fira/woff2/FiraSans-Medium.woff2www.php.net/fonts/Fira/woff2/FiraSa... https://www.php.net/fonts/Fira/woff2/FiraSans-Medium.woff2 — 200 — 130.0 KiB — 92 ms — h2https://www.php.net/fonts/Font-Awesome/font/fontello.woff2?96103027www.php.net/fonts/Font-Awesome/font... https://www.php.net/fonts/Font-Awesome/font/fontello.woff2?96103027 — 200 — 3.1 KiB — 78 ms — h2https://www.php.net/fonts/Fira/woff2/FiraSans-BookItalic.woff2www.php.net/fonts/Fira/woff2/FiraSa... https://www.php.net/fonts/Fira/woff2/FiraSans-BookItalic.woff2 — 200 — 136.0 KiB — 90 ms — h2https://www.php.net/js/php-web.mjswww.php.net/js/php-web.mjs https://www.php.net/js/php-web.mjs — 200 — 31.7 KiB — 54 ms — h2https://analytics.php.net/matomo.php?action_name=PHP&idsite=1&rec=1&r=791862&h=17&m=22&s=14&url=https%3A%2F%2Fwww.php.net%2F&_id=&_idn=1&send_image=0&_refts=0&pv_id=DrAwYa&pf_net=0&pf_srv=32&pf_tfr=2&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.55%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600analytics.php.net/matomo.php?action... https://analytics.php.net/matomo.php?action_name=PHP&idsite=1&rec=1&r=791862&h=17&m=22&s=14&url=https%3A%2F%2Fwww.php.net%2F&_id=&_idn=1&send_image=0&_refts=0&pv_id=DrAwYa&pf_net=0&pf_srv=32&pf_tfr=2&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.55%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600 — 204 — 110 B — 154 ms — h2https://www.php.net/images/elephpants.php?count=18www.php.net/images/elephpants.php?c... https://www.php.net/images/elephpants.php?count=18 — 200 — 86.4 KiB — 37 ms — h2https://www.php.net/js/search-index.php?lang=enwww.php.net/js/search-index.php?lan... https://www.php.net/js/search-index.php?lang=en — 200 — 264.8 KiB — 60 ms — h2https://www.php.net/favicon.ico?v=2www.php.net/favicon.ico?v=2 https://www.php.net/favicon.ico?v=2 — 200 — 5.5 KiB — 41 ms — h2data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsK…data:image/jpeg;base64,/9j/4AAQSkZJ... data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsK… — 200 — 0 B — 0 ms — datadata:image/jpeg;base64,/9j/4AAQSkZJRgABAQEASABIAAD/4gxYSUNDX1BST0ZJTEUAAQEAAAxITGlubwIQAABtbnRyUkdC…data:image/jpeg;base64,/9j/4AAQSkZJ... data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEASABIAAD/4gxYSUNDX1BST0ZJTEUAAQEAAAxITGlubwIQAABtbnRyUkdC… — 200 — 0 B — 0 ms — data
0 ms 200 ms 400 ms 600 ms FCP 558 ms LCP 598 mshttps://php.net// https://php.net/ — 301 — 81 B — 92 ms — h2https://www.php.net/www.php.net/ https://www.php.net/ — 200 — 9.0 KiB — 34 ms — h2https://www.php.net/cached.php?t=1756715876&f=/fonts/Fira/fira.csswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/fonts/Fira/fira.css — 200 — 700 B — 39 ms — h2https://www.php.net/cached.php?t=1756715876&f=/fonts/Font-Awesome/css/fontello.csswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/fonts/Font-Awesome/css/fontello.css — 200 — 1.1 KiB — 40 ms — h2https://www.php.net/cached.php?t=1763585401&f=/styles/theme-base.csswww.php.net/cached.php?t=1763585401... https://www.php.net/cached.php?t=1763585401&f=/styles/theme-base.css — 200 — 6.6 KiB — 42 ms — h2https://www.php.net/cached.php?t=1763575802&f=/styles/theme-medium.csswww.php.net/cached.php?t=1763575802... https://www.php.net/cached.php?t=1763575802&f=/styles/theme-medium.css — 200 — 5.0 KiB — 43 ms — h2https://www.php.net/cached.php?t=1756715876&f=/styles/home.csswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/styles/home.css — 200 — 1.3 KiB — 44 ms — h2https://www.php.net/images/php8/logo_php8_5.svgwww.php.net/images/php8/logo_php8_5... https://www.php.net/images/php8/logo_php8_5.svg — 200 — 1.7 KiB — 69 ms — h2https://www.php.net/cached.php?t=1759587603&f=/js/interactive-examples.jswww.php.net/cached.php?t=1759587603... https://www.php.net/cached.php?t=1759587603&f=/js/interactive-examples.js — 200 — 1.4 KiB — 39 ms — h2https://www.php.net/images/logos/php-logo-white.svgwww.php.net/images/logos/php-logo-w... https://www.php.net/images/logos/php-logo-white.svg — 200 — 752 B — 32 ms — h2https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery-3.6.0.min.jswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery-3.6.0.min.js — 200 — 30.5 KiB — 35 ms — h2https://www.php.net/cached.php?t=1756715876&f=/js/ext/FuzzySearch.min.jswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/js/ext/FuzzySearch.min.js — 200 — 7.8 KiB — 54 ms — h2https://www.php.net/cached.php?t=1756715876&f=/js/ext/mousetrap.min.jswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/js/ext/mousetrap.min.js — 200 — 2.6 KiB — 66 ms — h2https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery.scrollTo.min.jswww.php.net/cached.php?t=1756715876... https://www.php.net/cached.php?t=1756715876&f=/js/ext/jquery.scrollTo.min.js — 200 — 1.7 KiB — 66 ms — h2https://analytics.php.net/matomo.jsanalytics.php.net/matomo.js https://analytics.php.net/matomo.js — 200 — 21.7 KiB — 71 ms — h2https://www.php.net/cached.php?t=1768309801&f=/js/search.jswww.php.net/cached.php?t=1768309801... https://www.php.net/cached.php?t=1768309801&f=/js/search.js — 200 — 4.2 KiB — 46 ms — h2https://www.php.net/cached.php?t=1768309801&f=/js/common.jswww.php.net/cached.php?t=1768309801... https://www.php.net/cached.php?t=1768309801&f=/js/common.js — 200 — 7.8 KiB — 40 ms — h2https://www.php.net/images/to-top@2x.pngwww.php.net/images/to-top@2x.png https://www.php.net/images/to-top@2x.png — 200 — 1.2 KiB — 36 ms — h2https://www.php.net/images/bg-texture-00.svgwww.php.net/images/bg-texture-00.sv... https://www.php.net/images/bg-texture-00.svg — 200 — 363 B — 35 ms — h2https://www.php.net/fonts/Fira/woff2/FiraSans-Book.woff2www.php.net/fonts/Fira/woff2/FiraSa... https://www.php.net/fonts/Fira/woff2/FiraSans-Book.woff2 — 200 — 129.0 KiB — 80 ms — h2https://www.php.net/fonts/Fira/woff2/FiraSans-Medium.woff2www.php.net/fonts/Fira/woff2/FiraSa... https://www.php.net/fonts/Fira/woff2/FiraSans-Medium.woff2 — 200 — 130.0 KiB — 92 ms — h2https://www.php.net/fonts/Font-Awesome/font/fontello.woff2?96103027www.php.net/fonts/Font-Awesome/font... https://www.php.net/fonts/Font-Awesome/font/fontello.woff2?96103027 — 200 — 3.1 KiB — 78 ms — h2https://www.php.net/fonts/Fira/woff2/FiraSans-BookItalic.woff2www.php.net/fonts/Fira/woff2/FiraSa... https://www.php.net/fonts/Fira/woff2/FiraSans-BookItalic.woff2 — 200 — 136.0 KiB — 90 ms — h2https://www.php.net/js/php-web.mjswww.php.net/js/php-web.mjs https://www.php.net/js/php-web.mjs — 200 — 31.7 KiB — 54 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 225ms · 9KB · €2/mo
Unattributable
Other
Optional
Execution 149ms
Transfer 0 KB
Monthly Cost €2/mo
www.php.net
Other
Optional
Execution 76ms
Transfer 9 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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