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.
3.14 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
9.11 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
96 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.
6.08 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.
14.09 s
Page Load Progression
FPage Weight BudgetAction7.8 MB transferred, 49 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
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
DThird-Party ImpactAction95% third-party, 0 ms blockingFIX
DPage Weight InventoryAction49 resources · 7.8 MB · 122 KB savings availableFIX
~122.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 49 resources | 7.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization23 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.
Performance issues directly impact user engagement and conversion rates.
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 CostAction1596ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://guardian.ng/ | 511ms | 45ms | 5ms | 1st |
| Unattributable | 339ms | 6ms | 0ms | 3rd |
| https://guardian.ng/cdn-cgi/challenge-platform/scripts/jsd/main.js | 262ms | 237ms | 13ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-FJEQ3FB9QG | 223ms | 183ms | 38ms | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js?ver=1.9.0 | 199ms | 127ms | 14ms | 3rd |
| https://guardian.ng/wp-content/themes/guardian_ng/assets/build/js/script.min.js?ver=1773842681 | 62ms | 49ms | 7ms | 1st |
BJS Bundles8 scripts, 122 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-FJEQ3FB9QG | 173 KB | 67 KB (39%) | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/Swiper/8.4.5/swiper-bundle.min.js?ver=6.7.2 | 34 KB | 33 KB (97%) | ✓ | 3rd |
| https://guardian.ng/wp-content/themes/guardian_ng/assets/build/js/script.min.js?ver=1773842681 | 27 KB | 22 KB (82%) | ✓ | 1st |
| https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js?ver=1.9.0 | 27 KB | — | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.9.0/slick.min.js?ver=1.9.0 | 10 KB | — | ✓ | 3rd |
| https://guardian.ng/wp-content/plugins/guardian-throwback/assets/js/throwback.js?ver=69e95f3dc801b | 1 KB | — | ✓ | 1st |
| https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 | 11 KB | — | ✓ | 3rd |
| https://guardian.ng/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js? | 13 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading9 fonts (205 KB)PASS
Web fonts
9
205 KB total
Render-blocking
0
of 9
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 Hints10 hints, 0 missing preconnectsPASS
Current Resource Hints
10 resource hints configured
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 Waterfall49 requests over 3660msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 339ms | 0 KB | — | ₦3031/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 223ms | 173 KB | 39% | ₦1998/mo | Costly |
cdnjs cdnjs.cloudflare.com | CDN | 199ms | 27 KB | — | ₦1780/mo | Costly |
These scripts may cost more than they're worth
- Unattributable adds 339ms and costs ~₦3031/month
- Google Tag Manager adds 223ms and costs ~₦1998/month
- cdnjs adds 199ms and costs ~₦1780/month
48% 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 339ms 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 223ms 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
cdnjs takes 199ms 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