Performance
· 24 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.
883 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.02 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
10 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.
931 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
2.56 s
Page Load Progression
FPage Weight BudgetAction4.6 MB transferred, 53 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
BImage Optimization10 images, 0 KB saveableREVIEW
CJS BundlesAction24 scripts, 265 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-R22LR0L6W2&cx=c>m=4e6ba1 | 195 KB | 130 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N3NVVSVB | 117 KB | 72 KB (62%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-R22LR0L6W2 | 195 KB | 63 KB (32%) | ✓ | 3rd |
| https://googleads.g.doubleclick.net/pagead/viewthroughconversion/18482887555/?random=1794458914340&cv=11&fst=1794458914340&bg=ffffff&guid=ON&async=1&en=gtag.config>m=45je6ba1h1v9265598231za208zb9265790668zd9265790668xecxf1&gcd=13l3l3l3l1l1&dma=0&tag_exp=115938466~115938468~117776796~118131808~118897920~118897930~119860442~120213116~120385423~120412526~120420414~120469145~120469153~121191153~121246026~121246034~123329125~124134299~124170881&u_w=800&u_h=600&url=https%3A%2F%2Fvitalitydentistry.com%2F&ref=https%3A%2F%2Fvitalitydentistry.com%2F&rcb=18&frm=0&tiba=Dentistry%20at%20Vitality%20Health%20%7C%20Markham%20Dentist%20Since%201985&hn=www.googleadservices.com&npa=0&pscdl=noapi&auid=1097707949.1794458914&uaa=x86&uab=64&uafvl=Not%253AA-Brand%3B8.0.0.0%7CChromium%3B156.0.8078.79&uamb=0&uam=&uap=macOS&uapv=10.15.7&uaw=0&data=event%3Dgtag.config&ept=9&rfmt=3&fmt=4 | 3 KB | — | ✓ | 3rd |
| https://maps.googleapis.com/maps-api-v3/api/js/66/13d/geometry.js | 3 KB | — | ✓ | 3rd |
| https://vitalitydentistry.com/search.js | 6 KB | — | ✓ | 1st |
| https://vitalitydentistry.com/floating-cta.js | 2 KB | — | ✓ | 1st |
| https://vitalitydentistry.com/analytics.js?v=5 | 2 KB | — | ✓ | 1st |
| https://plausible.io/js/script.js | 2 KB | — | ✓ | 3rd |
| https://vitalitydentistry.com/airo-logo-orientation.js | 3 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction53 resources · 4.6 MB · 265 KB savings availableREVIEW
~264.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 53 resources | 4.6 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
AThird-Party Impact20% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+JS Execution Cost280ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-R22LR0L6W2 | 101ms | 88ms | 13ms | 3rd |
| Unattributable | 94ms | 4ms | 0ms | 1st |
| https://vitalitydentistry.com/ | 86ms | 5ms | 1ms | 1st |
A+Font Loading2 fonts (74 KB)PASS
Web fonts
2
74 KB total
Render-blocking
0
of 2
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+Document CompressionDocument response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall53 requests over 3034msINFO
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 | 101ms | 195 KB | 32% | $1/mo | Optional |
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-10-13 — 2026-11-09)
LCP (p75)
922 ms
97% good
INP (p75)
54 ms
98% good
CLS (p75)
0.000
98% good
FCP (p75)
872 ms
TTFB (p75)
368 ms
Image Optimization7 images, 1078 KB total, 1008 KB wastedINFO
Image Optimization Audit
Total Images
7
Total Size
1078 KB
Oversized
6
Wasted
1008 KB