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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
4
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
76
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
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.
92
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.

1.55 s

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

1.76 s

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

38 ms

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

0.206

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

1.55 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.

3.36 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
6 PASS 3 REVIEW 4 FIX
F
Page Weight Budget
Action
5.7 MB transferred, 112 requests
FIX
5.7 MB transferred, 112 requests
Critical::
Page weighs 8.9 MB (5.7 MB transferred)
Info::
Fonts are 2.8 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 2.8 MB
Info::
CSS is 1.1 MB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 1.1 MB
Warning::
JavaScript is 1.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.0 MB
Warning::
112 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.2 g CO2 per page load
5.7 MB / 2.4 MB budget
5.7 MB transferred
112 requests
1.2 g CO2 per page load
Fonts 2.8 MiB 49%
CSS 1.1 MiB 19%
JavaScript 1.0 MiB 18%
Images 718.8 KiB 12%
HTML 74.3 KiB 1%
Other 37.0 KiB 1%
Other 16.7 KiB 0%
Other 9.7 KiB 0%
Other 3.0 KiB 0%
Other 1.3 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over 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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

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

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 (5.7 MiB of 5.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
32 scripts, 337 KB unused
FIX
32 scripts, 337 KB unused
Warning::
https://script.crazyegg.com/scripts/addons/1.0.146...: 74 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-15TS...: 66 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-P7R...: 60 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-381...: 58 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://webcomponents.wipo.int/wipo-navbar/wipo-na...: 28 KB unused (32%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 337 KB
337 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://script.crazyegg.com/scripts/addons/1.0.146/survey.js100 KB74 KB (77%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-15TSHJ0HWP&cx=c&gtm=4e64h1h1174 KB66 KB (38%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-P7RLS2159 KB60 KB (38%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-381553970&cx=c&gtm=4e64h1h1146 KB58 KB (40%)✓3rd
https://webcomponents.wipo.int/wipo-navbar/wipo-navbar-v4.js88 KB28 KB (32%)✓3rd
https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js55 KB26 KB (47%)✓3rd
https://wipoanalytics.wipo.int/matomo/js/container_oj6DkAWh.js76 KB24 KB (32%)✓3rd
https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/constants-d11aa849.js11 KB—✓3rd
https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/property-4274d0eb.js2 KB—✓3rd
https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/global-d3f344c0.js4 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

D
Page Weight Inventory
Action
112 resources · 5.7 MB · 337 KB savings available
FIX
112 resources · 5.7 MB · 337 KB savings available
Warning::
Page weight 4.7 MB over 1MB target
Got: 5.7 MB Expected: ≤ 1 MB
Info::
~337 KB of savings available
Warning::
111 third-party resources (100% of weight)
Info::
2 resources over 200KB
112 resources · 5.7 MiB · 111 third-party 4.7 MiB over 1MB target
Font 49% · 2.8 MiB
CSS 19% · 1.1 MiB
JavaScript 18% · 1.0 MiB
Image 13% · 754.6 KiB
Document 1% · 76.9 KiB
Other 1% · 29.4 KiB

~336.5 KiB of savings available

Remove unused JavaScript: 336.5 KiB
B
Image Optimization
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Warning::
https://www.wipo.int/shared/images/assemblies-2019... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.wipo.int/documents/d/wipo/images-banne... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.wipo.int/documents/d/wipo/images-banne... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.wipo.int/documents/d/wipo/images-photo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.wipo.int/documents/d/wipo/images-ipday... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.wipo.int/documents/d/director-general/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11 images 719 KB
0 oversized -0 KB
2 legacy format
6 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

B
JS Execution Cost
753ms total JS execution
REVIEW
753ms total JS execution
Info::
https://www.wipo.int/portal/en/index.html: 190ms CPU time
Info::
Unattributable: 151ms CPU time
Info::
https://webcomponents.wipo.int/wipo-navbar/wipo-na...: 93ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=AW-381...: 83ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-P7R...: 81ms CPU time
Warning::
Third-party scripts: 753ms (100% of total)

Main Thread Breakdown

Script Evaluation 49% Other 22% Style & Layout 15% Script Parsing & Compilation 7% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.wipo.int/portal/en/index.html190ms2ms1ms3rd
Unattributable151ms7ms0ms3rd
https://webcomponents.wipo.int/wipo-navbar/wipo-navbar-v4.js93ms71ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-381553970&cx=c&gtm=4e64h1h183ms73ms10ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-P7RLS281ms68ms12ms3rd
https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js80ms69ms4ms3rd
https://www.googletagmanager.com/gtag/js?id=G-15TSHJ0HWP&cx=c&gtm=4e64h1h174ms61ms12ms3rd
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
6 fonts (2838 KB)
PASS
6 fonts (2838 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

2838 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 500 ms 1.0 s 1.5 s FCP 1.5 s LCP 1.8 shttps://webcomponents.wipo.int/fonts/files/noto-sans-display-latin-400-normal.woff2noto-sans-display-latin... https://webcomponents.wipo.int/fonts/files/noto-sans-display-latin-400-normal.woff2 — 11.5 KiB — 31 ms — font-display: swaphttps://webcomponents.wipo.int/fonts/files/noto-sans-display-latin-300-normal.woff2noto-sans-display-latin... https://webcomponents.wipo.int/fonts/files/noto-sans-display-latin-300-normal.woff2 — 11.7 KiB — 28 ms — font-display: swaphttps://webcomponents.wipo.int/fonts/files/noto-sans-display-latin-600-normal.woff2noto-sans-display-latin... https://webcomponents.wipo.int/fonts/files/noto-sans-display-latin-600-normal.woff2 — 11.7 KiB — 28 ms — font-display: swaphttps://webcomponents.wipo.int/fonts/files/noto-sans-display-latin-500-normal.woff2noto-sans-display-latin... https://webcomponents.wipo.int/fonts/files/noto-sans-display-latin-500-normal.woff2 — 11.6 KiB — 25 ms — font-display: swaphttps://webcomponents.wipo.int/fonts/files/material-symbols-outlined.woff2material-symbols-outlin... https://webcomponents.wipo.int/fonts/files/material-symbols-outlined.woff2 — 2.7 MiB — 124 ms — font-display: swaphttps://webcomponents.wipo.int/fonts/files/noto-sans-dropdown.woffnoto-sans-dropdown.woff https://webcomponents.wipo.int/fonts/files/noto-sans-dropdown.woff — 2.5 KiB — 54 ms — font-display: swap
noto-sans-display-latin... woff2 swap
Size 11 KB
Load time 31 ms
Start 586 ms
Risk FOUT — text flashes from fallback to web font
noto-sans-display-latin... woff2 swap
Size 12 KB
Load time 28 ms
Start 587 ms
Risk FOUT — text flashes from fallback to web font
noto-sans-display-latin... woff2 swap
Size 12 KB
Load time 28 ms
Start 587 ms
Risk FOUT — text flashes from fallback to web font
noto-sans-display-latin... woff2 swap
Size 12 KB
Load time 25 ms
Start 591 ms
Risk FOUT — text flashes from fallback to web font
material-symbols-outlin... woff2 swap
Size 2789 KB
Load time 124 ms
Start 591 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
noto-sans-dropdown.woff woff swap
Size 2 KB
Load time 54 ms
Start 666 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 ~1395 KB and ~2790 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
HTTP Caching
max-age=10800 (3 hours)
PASS
max-age=10800 (3 hours)
Info::
Cache-Control header is set
Got: max-age=10800
Info::
Effective TTL: 3 hours (max-age=10800)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=10800

DirectiveValueMeaning
max-age10800Cache for 3 hours
Effective TTL: 10800 seconds
Network Waterfall
112 requests over 10645ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 1.5 s LCP 1.8 shttps://wipo.int// https://wipo.int/ — 301 — 444 B — 124 ms — http/1.1https://www.wipo.int/www.wipo.int/ https://www.wipo.int/ — 302 — 829 B — 58 ms — h2https://www.wipo.int/portal/en/index.htmlwww.wipo.int/portal/en/index.html https://www.wipo.int/portal/en/index.html — 200 — 74.3 KiB — 42 ms — h2https://www.wipo.int/export/system/modules/org.wipo.internet.rwd.universal.templates/resources/css/ulf-wipo.csswww.wipo.int/export/system/modules/... https://www.wipo.int/export/system/modules/org.wipo.internet.rwd.universal.templates/resources/css/ulf-wipo.css — 200 — 710.7 KiB — 82 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/wipo-footer.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/wipo-footer.js — 200 — 21.6 KiB — 69 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/style/footer.csscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/style/footer.css — 200 — 475 B — 66 ms — h2https://webcomponents.wipo.int/polyfills/webcomponents-loader.jswebcomponents.wipo.int/polyfills/we... https://webcomponents.wipo.int/polyfills/webcomponents-loader.js — 200 — 393 B — 61 ms — h2https://webcomponents.wipo.int/wipo-navbar/wipo-navbar.jswebcomponents.wipo.int/wipo-navbar/... https://webcomponents.wipo.int/wipo-navbar/wipo-navbar.js — 200 — 2.2 KiB — 62 ms — h2https://webcomponents.wipo.int/wipo-analytics/wipo-analytics-oj6DkAWh.jswebcomponents.wipo.int/wipo-analyti... https://webcomponents.wipo.int/wipo-analytics/wipo-analytics-oj6DkAWh.js — 200 — 746 B — 64 ms — h2https://www.wipo.int/documents/d/wipo/images-photos-director-general-daren-tang-assemblies-67th-session-960.webpwww.wipo.int/documents/d/wipo/image... https://www.wipo.int/documents/d/wipo/images-photos-director-general-daren-tang-assemblies-67th-session-960.webp — 200 — 32.1 KiB — 81 ms — h2https://www.wipo.int/documents/d/ip-advantage/images-madrid-system-success-story-apr-medicube-960.webpwww.wipo.int/documents/d/ip-advanta... https://www.wipo.int/documents/d/ip-advantage/images-madrid-system-success-story-apr-medicube-960.webp — 200 — 97.1 KiB — 43 ms — h2https://www.wipo.int/documents/d/wipo/images-guide-to-copyright-960.webpwww.wipo.int/documents/d/wipo/image... https://www.wipo.int/documents/d/wipo/images-guide-to-copyright-960.webp — 200 — 27.6 KiB — 75 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/lit-element-49732949.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/lit-element-49732949.js — 200 — 6.3 KiB — 40 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/custom-element-ba1c37b2.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/custom-element-ba1c37b2.js — 200 — 790 B — 26 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/property-4274d0eb.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/property-4274d0eb.js — 200 — 1.5 KiB — 28 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/query-dbc88ca5.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/query-dbc88ca5.js — 200 — 1.0 KiB — 29 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/constants-d11aa849.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/constants-d11aa849.js — 200 — 10.6 KiB — 34 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/global-d3f344c0.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/global-d3f344c0.js — 200 — 4.1 KiB — 35 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/i18-short-62210206.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/i18-short-62210206.js — 200 — 977 B — 31 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/base-c1199ef8.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/base-c1199ef8.js — 200 — 800 B — 40 ms — h2https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/de-f545d098.jscdnjs.wipo.int/universal-lf-webcomp... https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/de-f545d098.js — 200 — 6.3 KiB — 42 ms — h2https://www.wipo.int/documents/d/wipo/images-rose-smell-tires.webpwww.wipo.int/documents/d/wipo/image... https://www.wipo.int/documents/d/wipo/images-rose-smell-tires.webp — 200 — 34.1 KiB — 120 ms — h2https://webcomponents.wipo.int/wipo-navbar/ulf-fonts.csswebcomponents.wipo.int/wipo-navbar/... https://webcomponents.wipo.int/wipo-navbar/ulf-fonts.css — 200 — 1.1 KiB — 27 ms — h2https://webcomponents.wipo.int/wipo-navbar/wipo-navbar-v4.jswebcomponents.wipo.int/wipo-navbar/... https://webcomponents.wipo.int/wipo-navbar/wipo-navbar-v4.js — 200 — 88.5 KiB — 80 ms — h2https://www.wipo.int/site.webmanifestwww.wipo.int/site.webmanifest https://www.wipo.int/site.webmanifest — 200 — 1.3 KiB — 56 ms — h2https://www.wipo.int/documents/d/wipo/images-ipday-2026-index-960.webpwww.wipo.int/documents/d/wipo/image... https://www.wipo.int/documents/d/wipo/images-ipday-2026-index-960.webp — 200 — 146.6 KiB — 139 ms — h2https://www.wipo.int/export/sites/www/universal-design-system/assets/js/universal.jswww.wipo.int/export/sites/www/unive... https://www.wipo.int/export/sites/www/universal-design-system/assets/js/universal.js — 200 — 3.9 KiB — 151 ms — 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https://wipoanalytics.wipo.int/matomo/matomo.php?e_c=Navbar&e_a=wipoPageLoaded&e_n=10466&e_v=10466&ca=1&idsite=14&rec=1&r=835184&h=19&m=33&s=7&url=https%3A%2F%2Fwww.wipo.int%2Fportal%2Fen%2Findex.html&_id=c0f2c2dbc1e848c4&_idn=0&send_image=0&_refts=0&dimension1=WIPO%20Website&dimension2=en&pf_net=0&pf_srv=23&pf_tfr=18&pf_dm1=467&pf_dm2=9779&pf_onl=4&pv_id=pYeyno&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%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 — 633 B — 79 ms — 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https://wipoanalytics.wipo.int/matomo/matomo.php?e_c=Navigation&e_a=wsitPageLoaded&e_n=PageLoaded&e_v=10466&ca=1&idsite=14&rec=1&r=684663&h=19&m=33&s=7&url=https%3A%2F%2Fwww.wipo.int%2Fportal%2Fen%2Findex.html&_id=c0f2c2dbc1e848c4&_idn=0&send_image=0&_refts=0&dimension1=WIPO%20Website&dimension2=en&pv_id=pYeyno&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%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 — 631 B — 77 ms — h2
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 753ms · 697KB · CHF12/mo
www.wipo.int
Other
Optional
Execution 190ms
Transfer 74 KB
Monthly Cost CHF3/mo
Unattributable
Other
Optional
Execution 151ms
Transfer 0 KB
Monthly Cost CHF2/mo
webcomponents.wipo.int
Other
Optional
Execution 93ms
Transfer 88 KB
Unused 32%
Monthly Cost CHF1/mo
Google Tag Manager
Tag Manager
Optional
Execution 83ms
Transfer 146 KB
Unused 40%
Monthly Cost CHF1/mo
Google Tag Manager
Tag Manager
Optional
Execution 81ms
Transfer 159 KB
Unused 38%
Monthly Cost CHF1/mo
script.crazyegg.com
Other
Optional
Execution 80ms
Transfer 55 KB
Unused 47%
Monthly Cost CHF1/mo
Google Tag Manager
Tag Manager
Optional
Execution 74ms
Transfer 174 KB
Unused 38%
Monthly Cost CHF1/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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