Performance
· 27 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.
5.87 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
18.03 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.10 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.
7.76 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.
18.85 s
Page Load Progression
FPage Weight BudgetAction4.0 MB transferred, 98 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
FJS Execution CostAction6972ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://charliekirkface.net/_next/static/chunks/786-84eda7cb3ba2929c.js | 1485ms | 1117ms | 81ms | 1st |
| Unattributable | 822ms | 56ms | 0ms | 1st |
| https://charliekirkface.net/ | 787ms | 104ms | 58ms | 1st |
| https://charliekirkface.net/_next/static/chunks/webpack-b8b30960f8ed5669.js | 681ms | 674ms | 2ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-P71HVSMXRG | 659ms | 400ms | 88ms | 3rd |
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202610120101/show_ads_impl_fy2021.js?bust=122881613 | 630ms | 439ms | 141ms | 3rd |
| https://charliekirkface.net/cdn-cgi/challenge-platform/scripts/jsd/main.js | 430ms | 386ms | 4ms | 1st |
| https://charliekirkface.net/_next/static/chunks/40861-3a2a92f8d1b4f0cf.js | 365ms | 351ms | 13ms | 1st |
| https://charliekirkface.net/_next/static/chunks/16833-90f1c7d534263030.js | 342ms | 129ms | 18ms | 1st |
| https://fundingchoicesmessages.google.com/i/ca-pub-4168717719853776?href=https%3A%2F%2Fcharliekirkface.net&ers=2 | 331ms | 287ms | 39ms | 3rd |
Showing top 10 of 15 scripts
DJS BundlesAction48 scripts, 484 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202610120101/show_ads_impl_fy2021.js?bust=122881613 | 165 KB | 117 KB (71%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-P71HVSMXRG | 176 KB | 70 KB (40%) | ✓ | 3rd |
| https://charliekirkface.net/_next/static/chunks/1197b774-dfa4b028af886f83.js | 98 KB | 69 KB (71%) | ✓ | 1st |
| https://charliekirkface.net/_next/static/chunks/48103-e8ad57a4d6ecd71d.js | 82 KB | 50 KB (64%) | ✓ | 1st |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?fcd=true | 56 KB | 45 KB (81%) | ✓ | 3rd |
| https://fundingchoicesmessages.google.com/i/ca-pub-4168717719853776?href=https%3A%2F%2Fcharliekirkface.net&ers=2 | 71 KB | 36 KB (52%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-4168717719853776 | 56 KB | 30 KB (53%) | ✓ | 3rd |
| https://charliekirkface.net/_next/static/chunks/68249-8f1fc7a1c648d723.js | 33 KB | 23 KB (71%) | ✓ | 1st |
| https://charliekirkface.net/_next/static/chunks/af7a3046-bb9957f3003d6372.js | 61 KB | 22 KB (36%) | ✓ | 1st |
| https://charliekirkface.net/_next/static/chunks/16833-90f1c7d534263030.js | 35 KB | 21 KB (59%) | ✓ | 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
DPage Weight InventoryAction98 resources · 4.0 MB · 484 KB savings availableFIX
~483.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 98 resources | 4.0 MiB | ||||||
BImage Optimization6 images, 0 KB saveableREVIEW
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BDocument CompressionDocument response uses gzip; brotli would be ~20% smallerREVIEW
BAsset Compression1 of 1 asset host serve text uncompressedREVIEW
BMain HTML Cache-ControlCache-Control present but without max-ageREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
BHTTP Cachingpublic, s-maxage=3600, stale-while-revalidate=14400REVIEW
public, s-maxage=3600, stale-while-revalidate=14400
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| s-maxage | 3600 | CDN caches for 1 hour |
| stale-while-revalidate | 14400 | Serve stale for 4 hours while fetching fresh |
A+Third-Party Impact15% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (98 KB)PASS
Web fonts
3
98 KB total
Render-blocking
0
of 3
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 Hints7 hints, 0 missing preconnectsPASS
Current Resource Hints
7 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) 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 Waterfall98 requests over 5492msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 659ms | 176 KB | 40% | €11/mo | Costly |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 630ms | 165 KB | 71% | €10/mo | Costly |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 331ms | 71 KB | 52% | €5/mo | Costly |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 180ms | 56 KB | 53% | €3/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 62ms | 56 KB | 81% | €1/mo | Optional |
ep2.adtrafficquality.google ep2.adtrafficquality.google | Other | 58ms | 8 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- Google Tag Manager adds 659ms and costs ~€11/month
- pagead2.googlesyndication.com adds 630ms and costs ~€10/month
- fundingchoicesmessages.google.com adds 331ms and costs ~€5/month
Google Tag Manager takes 659ms 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
pagead2.googlesyndication.com takes 630ms 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
71% of pagead2.googlesyndication.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
fundingchoicesmessages.google.com takes 331ms 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
52% of fundingchoicesmessages.google.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
53% of pagead2.googlesyndication.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
81% of pagead2.googlesyndication.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
Image Optimization39 images, 19416 KB total, 2477 KB wastedINFO
Image Optimization Audit
Total Images
39
Total Size
19416 KB
Oversized
3
Wasted
2477 KB