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.
4.47 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
54.00 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
527 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.
13.50 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.
57.90 s
Page Load Progression
FPage Weight BudgetAction17.5 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
FJS Execution CostAction3666ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 908ms | 65ms | 0ms | 3rd |
| https://thenai.org/wp-content/themes/nai/public/scripts/vendor.js?id=b2d0069dd848877c1afe | 723ms | 208ms | 70ms | 1st |
| https://thenai.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 661ms | 509ms | 11ms | 1st |
| https://thenai.org/wp-content/themes/nai/public/scripts/app.js?id=18eb3207c4c4e2e5278b | 429ms | 161ms | 1ms | 1st |
| https://thenai.org/ | 347ms | 50ms | 5ms | 1st |
| https://thenai.org/cdn-cgi/challenge-platform/scripts/jsd/main.js | 228ms | 217ms | 2ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=UA-2473248-1 | 204ms | 165ms | 37ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SSJYM8RFWF&cx=c>m=4e64h1 | 167ms | 113ms | 53ms | 3rd |
CImage OptimizationAction40 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
CJS BundlesAction15 scripts, 214 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://thenai.org/wp-content/themes/nai/public/scripts/vendor.js?id=b2d0069dd848877c1afe | 139 KB | 66 KB (47%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/js?id=UA-2473248-1 | 125 KB | 64 KB (51%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SSJYM8RFWF&cx=c>m=4e64h1 | 146 KB | 63 KB (44%) | ✓ | 3rd |
| https://static.addtoany.com/menu/modules/core.ydpp7jcu.js | 26 KB | 21 KB (82%) | ✓ | 3rd |
| https://thenai.org/wp-content/plugins/add-to-any/addtoany.min.js?ver=1.1 | 0 KB | — | ✓ | 1st |
| https://thenai.org/wp-content/plugins/event-tickets/build/js/rsvp.js?ver=dab7c1842d0b66486c7c | 1 KB | — | ✓ | 1st |
| https://thenai.org/wp-content/plugins/event-tickets/build/js/ticket-details.js?ver=effdcbb0319e200f2e6a | 1 KB | — | ✓ | 1st |
| https://thenai.org/wp-content/plugins/the-events-calendar/common/build/js/user-agent.js?ver=da75d0bdea6dde3898df | 0 KB | — | ✓ | 1st |
| https://thenai.org/wp-content/plugins/event-tickets/build/js/rsvp.js?ver=5.27.6.1 | 1 KB | — | ✓ | 1st |
| https://thenai.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 31 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
CPage Weight InventoryAction75 resources · 17.5 MB · 214 KB savings availableREVIEW
~214.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 75 resources | 17.5 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Third-Party Impact2% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (116 KB)PASS
Web fonts
1
116 KB total
Render-blocking
0
of 1
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- 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 ~93 KB and ~186 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=600 (10 minutes)PASS
max-age=600, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| max-age | 600 | Cache for 10 minutes |
| must-revalidate | — | Must recheck with server after expiry |
Network Waterfall75 requests over 1414msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 908ms | 0 KB | — | $12/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 204ms | 125 KB | 51% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 167ms | 146 KB | 44% | $2/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 908ms and costs ~$12/month
- Google Tag Manager adds 204ms and costs ~$3/month
Unattributable takes 908ms 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 204ms 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
51% 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