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.
5.80 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
25.16 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.06 s
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.
6.93 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.
27.25 s
Page Load Progression
FPage Weight BudgetAction14.8 MB transferred, 155 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
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
FJS Execution CostAction5850ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1140ms | 36ms | 0ms | 3rd |
| https://www.undp.org/ | 791ms | 5ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PHKHS2Q | 473ms | 418ms | 48ms | 3rd |
| https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/ScrollTrigger.min.js | 450ms | 101ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SBVSC5VZS4&cx=c&_slc=1 | 446ms | 383ms | 54ms | 3rd |
| https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js | 277ms | 34ms | 6ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WQT4KHGSW4&cx=c&_slc=1 | 257ms | 212ms | 42ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-3W7LPK0WP1&cx=c>m=4e64h1 | 256ms | 208ms | 40ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-TGHFVBQ9DR&cx=c>m=4e64h1 | 243ms | 205ms | 31ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-PBF14M9C6G&cx=c>m=4e64h1 | 235ms | 203ms | 30ms | 3rd |
Showing top 10 of 22 scripts
FJS BundlesAction32 scripts, 632 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-SBVSC5VZS4&cx=c&_slc=1 | 177 KB | 73 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-VLKXDT4YD0&cx=c>m=4e64h1 | 176 KB | 71 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-WQT4KHGSW4&cx=c&_slc=1 | 167 KB | 69 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-PBF14M9C6G&cx=c>m=4e64h1 | 157 KB | 66 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-TGHFVBQ9DR&cx=c>m=4e64h1 | 160 KB | 65 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-3W7LPK0WP1&cx=c>m=4e64h1 | 159 KB | 64 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PHKHS2Q | 169 KB | 62 KB (37%) | ✓ | 3rd |
| https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__es.js?usqp=CAI%3D | 99 KB | 48 KB (48%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 34 KB (35%) | ✓ | 3rd |
| https://cse.google.com/adsense/search/async-ads.js | 44 KB | 32 KB (73%) | ✓ | 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
FPage Weight InventoryAction155 resources · 14.8 MB · 632 KB savings availableFIX
~632.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 155 resources | 14.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction77 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
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 Loading5 fonts (249 KB)PASS
Web fonts
5
249 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
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)
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
Network Waterfall155 requests over 2705msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 1140ms | 0 KB | — | $15/mo | Costly |
www.undp.org www.undp.org | Other | 791ms | 23 KB | — | $10/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 473ms | 169 KB | 37% | $6/mo | Costly |
jsDelivr cdn.jsdelivr.net | CDN | 450ms | 18 KB | — | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 446ms | 177 KB | 41% | $6/mo | Costly |
jsDelivr cdn.jsdelivr.net | CDN | 277ms | 29 KB | — | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 257ms | 167 KB | 42% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 256ms | 159 KB | 40% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 243ms | 160 KB | 41% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 235ms | 157 KB | 42% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 212ms | 176 KB | 40% | $3/mo | Costly |
www.undp.org www.undp.org | Other | 184ms | 26 KB | 81% | $2/mo | Optional |
jsDelivr cdn.jsdelivr.net | CDN | 153ms | 2 KB | — | $2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 115ms | 97 KB | 35% | $2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 107ms | 45 KB | — | $1/mo | Optional |
cse.google.com cse.google.com | Other | 90ms | 4 KB | — | $1/mo | Optional |
jsDelivr cdn.jsdelivr.net | CDN | 81ms | 39 KB | — | $1/mo | Optional |
Google Analytics www.google-analytics.com | Analytics | 79ms | 21 KB | — | $1/mo | Optional |
www.undp.org www.undp.org | Other | 78ms | 28 KB | — | $1/mo | Optional |
www.undp.org www.undp.org | Other | 71ms | 2 KB | — | $1/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 63ms | 19 KB | — | $1/mo | Optional |
www.google.com www.google.com | Other | 52ms | 99 KB | 48% | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 1140ms and costs ~$15/month
- www.undp.org adds 791ms and costs ~$10/month
- Google Tag Manager adds 473ms and costs ~$6/month
- jsDelivr adds 450ms and costs ~$6/month
- Google Tag Manager adds 446ms and costs ~$6/month
- jsDelivr adds 277ms and costs ~$4/month
- Google Tag Manager adds 257ms and costs ~$3/month
- Google Tag Manager adds 256ms and costs ~$3/month
- Google Tag Manager adds 243ms and costs ~$3/month
- Google Tag Manager adds 235ms and costs ~$3/month
- Google Tag Manager adds 212ms and costs ~$3/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 1140ms 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
www.undp.org takes 791ms 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 473ms 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
jsDelivr takes 450ms 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 446ms 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
jsDelivr takes 277ms 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 257ms 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 256ms 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 243ms 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 235ms 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 212ms 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
81% of www.undp.org'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