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.
2.16 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.76 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
268 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.003
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.10 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.
13.39 s
Page Load Progression
FPage Weight BudgetAction2.6 MB transferred, 75 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
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
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
DPage Weight InventoryAction75 resources · 2.6 MB · 289 KB savings availableFIX
~288.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 75 resources | 2.6 MiB | ||||||
CImage OptimizationAction41 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
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
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
CJS Execution CostAction1958ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://unctad.org/ | 655ms | 41ms | 4ms | 1st |
| Unattributable | 359ms | 75ms | 0ms | 3rd |
| https://unctad.org/cdn-cgi/challenge-platform/scripts/jsd/main.js | 206ms | 200ms | 2ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-SN6PPP7BP5&cx=c>m=4e64h1 | 177ms | 138ms | 37ms | 3rd |
| https://unctad.org/sites/default/files/js/js_8Q5iy-lLm0zEG5h7yKSmgvTtleQLtgLdjQE6JYnmyv4.js?scope=footer&delta=0&language=en&theme=newyork_b5&include=eJxdjlEKwyAQRC-k8avnkVW3VqI7QVeKt28hpC39mscbBoaKo-JzRaBq4s6pKLqnGNFTgbgPbfcOUZZk3oJdRDsgLDo24edC3324WSvLhqkKseNBnU0GcmVPQnVpicP9C_NduwDo0E6HbzQgff2W50U7dNUi2UyJSslXWpjqzrhk40yNZboLXiksWfk | 172ms | 119ms | 12ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-331595331&cx=c>m=4e64h1 | 143ms | 112ms | 30ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-4057246821&cx=c>m=4e64h1 | 138ms | 110ms | 28ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-179163753-1 | 108ms | 83ms | 24ms | 3rd |
CJS BundlesAction14 scripts, 289 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-331595331&cx=c>m=4e64h1 | 137 KB | 66 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-4057246821&cx=c>m=4e64h1 | 137 KB | 66 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-179163753-1 | 117 KB | 63 KB (54%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SN6PPP7BP5&cx=c>m=4e64h1 | 154 KB | 61 KB (40%) | ✓ | 3rd |
| https://unctad.org/sites/default/files/js/js_8Q5iy-lLm0zEG5h7yKSmgvTtleQLtgLdjQE6JYnmyv4.js?scope=footer&delta=0&language=en&theme=newyork_b5&include=eJxdjlEKwyAQRC-k8avnkVW3VqI7QVeKt28hpC39mscbBoaKo-JzRaBq4s6pKLqnGNFTgbgPbfcOUZZk3oJdRDsgLDo24edC3324WSvLhqkKseNBnU0GcmVPQnVpicP9C_NduwDo0E6HbzQgff2W50U7dNUi2UyJSslXWpjqzrhk40yNZboLXiksWfk | 55 KB | 33 KB (60%) | ✓ | 1st |
| https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 | 11 KB | — | ✓ | 3rd |
| https://unctad.org/sites/default/files/js/js_dOZEWzC8VpZPaIbZu9IquwWlpq9ysKCGGtEzHBoN1V8.js?scope=footer&delta=5&language=en&theme=newyork_b5&include=eJxdjlEKwyAQRC-k8avnkVW3VqI7QVeKt28hpC39mscbBoaKo-JzRaBq4s6pKLqnGNFTgbgPbfcOUZZk3oJdRDsgLDo24edC3324WSvLhqkKseNBnU0GcmVPQnVpicP9C_NduwDo0E6HbzQgff2W50U7dNUi2UyJSslXWpjqzrhk40yNZboLXiksWfk | 7 KB | — | ✓ | 1st |
| https://static.cloudflareinsights.com/beacon.min.js | 11 KB | — | ✓ | 3rd |
| https://unpkg.com/imagesloaded@5.0.0/imagesloaded.pkgd.min.js | 2 KB | — | ✓ | 3rd |
| https://unctad.org/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js? | 11 KB | — | ✓ | 1st |
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
BHTTP Cachingmust-revalidate, no-cache, privateREVIEW
must-revalidate, no-cache, private
| Directive | Value | Meaning |
|---|---|---|
| must-revalidate | — | Must recheck with server after expiry |
| no-cache | — | Cache but always revalidate first |
| private | — | Only browser cache, not CDN/proxy |
AThird-Party Impact36% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (342 KB)PASS
Web fonts
4
342 KB total
Render-blocking
0
of 4
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
- 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 ~135 KB and ~270 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
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall75 requests over 1700msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 359ms | 0 KB | — | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 177ms | 154 KB | 40% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 143ms | 137 KB | 48% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 138ms | 137 KB | 48% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 108ms | 117 KB | 54% | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 359ms and costs ~€4/month
47% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
Unattributable 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
54% of Google Tag Manager'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