Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
23.77 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
34.65 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
84 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.
23.77 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.
34.77 s
Page Load Progression
FPage Weight BudgetAction5.7 MB transferred, 112 requestsFIX
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction3025ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 516ms | 21ms | 0ms | 3rd |
| https://webcomponents.wipo.int/wipo-navbar/wipo-navbar-v4.js | 425ms | 164ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-P7RLS2 | 359ms | 311ms | 44ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-15TSHJ0HWP&cx=c>m=4e64h1 | 301ms | 228ms | 46ms | 3rd |
| https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js | 244ms | 214ms | 11ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-381553970&cx=c>m=4e64h1 | 229ms | 198ms | 30ms | 3rd |
| https://www.wipo.int/portal/en/index.html | 189ms | 7ms | 2ms | 3rd |
| https://wipoanalytics.wipo.int/matomo/js/container_oj6DkAWh.js | 187ms | 151ms | 33ms | 3rd |
| https://webcomponents.wipo.int/wipo-navbar/wipo-cookie-consent.js | 172ms | 24ms | 0ms | 3rd |
| https://script.crazyegg.com/scripts/addons/1.0.146/survey.js | 121ms | 84ms | 32ms | 3rd |
Showing top 10 of 14 scripts
FJS BundlesAction33 scripts, 385 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://script.crazyegg.com/scripts/addons/1.0.146/survey.js | 100 KB | 74 KB (77%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-15TSHJ0HWP&cx=c>m=4e64h1 | 174 KB | 66 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-P7RLS2 | 159 KB | 60 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-381553970&cx=c>m=4e64h1 | 146 KB | 58 KB (40%) | ✓ | 3rd |
| https://www.wipo.int/shared/scripts/jquery.flexslider.js | 1 KB | 49 KB (88%) | ✗ | 3rd |
| https://webcomponents.wipo.int/wipo-navbar/wipo-navbar-v4.js | 88 KB | 27 KB (31%) | ✓ | 3rd |
| https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js | 55 KB | 26 KB (47%) | ✓ | 3rd |
| https://wipoanalytics.wipo.int/matomo/js/container_oj6DkAWh.js | 76 KB | 24 KB (32%) | ✓ | 3rd |
| https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/constants-d11aa849.js | 11 KB | — | ✓ | 3rd |
| https://cdnjs.wipo.int/universal-lf-webcomponents/latest/components/custom-element-ba1c37b2.js | 1 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
DPage Weight InventoryAction112 resources · 5.7 MB · 385 KB savings availableFIX
~385.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 112 resources | 5.7 MiB | ||||||
BImage Optimization11 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (2838 KB)PASS
Web fonts
6
2838 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- 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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
AHTTP Cachingmax-age=10800 (3 hours)PASS
max-age=10800
| Directive | Value | Meaning |
|---|---|---|
| max-age | 10800 | Cache for 3 hours |
Network Waterfall112 requests over 1973msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 516ms | 0 KB | — | CHF8/mo | Costly |
webcomponents.wipo.int webcomponents.wipo.int | Other | 425ms | 88 KB | 31% | CHF6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 359ms | 159 KB | 38% | CHF5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 301ms | 174 KB | 38% | CHF5/mo | Costly |
script.crazyegg.com script.crazyegg.com | Other | 244ms | 55 KB | 47% | CHF4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 229ms | 146 KB | 40% | CHF4/mo | Costly |
www.wipo.int www.wipo.int | Other | 189ms | 74 KB | — | CHF3/mo | Optional |
wipoanalytics.wipo.int wipoanalytics.wipo.int | Other | 187ms | 76 KB | 32% | CHF3/mo | Optional |
webcomponents.wipo.int webcomponents.wipo.int | Other | 172ms | 11 KB | — | CHF3/mo | Optional |
script.crazyegg.com script.crazyegg.com | Other | 121ms | 100 KB | 77% | CHF2/mo | Optional |
script.crazyegg.com script.crazyegg.com | Other | 82ms | 85 KB | — | CHF1/mo | Optional |
www.wipo.int www.wipo.int | Other | 74ms | 711 KB | — | CHF1/mo | Optional |
script.crazyegg.com script.crazyegg.com | Other | 72ms | 23 KB | — | CHF1/mo | Optional |
cdnjs.wipo.int cdnjs.wipo.int | Other | 53ms | 25 KB | — | CHF1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 516ms and costs ~CHF8/month
- webcomponents.wipo.int adds 425ms and costs ~CHF6/month
- Google Tag Manager adds 359ms and costs ~CHF5/month
- Google Tag Manager adds 301ms and costs ~CHF5/month
- script.crazyegg.com adds 244ms and costs ~CHF4/month
- Google Tag Manager adds 229ms and costs ~CHF4/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
Unattributable takes 516ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
webcomponents.wipo.int takes 425ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 359ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 301ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
script.crazyegg.com takes 244ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 229ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
77% of script.crazyegg.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev