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.
701 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
984 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
13 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.
1.36 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.
2.44 s
Page Load Progression
FPage Weight BudgetAction4.6 MB transferred, 51 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 (67%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N3NVVSVB | 116 KB | 72 KB (62%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-R22LR0L6W2 | 195 KB | 63 KB (32%) | ✓ | 3rd |
| https://maps.googleapis.com/maps-api-v3/api/js/66/13d/search.js | 1 KB | — | ✓ | 3rd |
| https://vitalitydentistry.com/airo-logo-orientation.js | 3 KB | — | ✓ | 1st |
| 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://maps.gstatic.com/maps-api-v3/embed/js/66/13d/init_embed.js | 74 KB | — | ✓ | 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction51 resources · 4.6 MB · 265 KB savings availableREVIEW
~265.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 51 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 Cost323ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-R22LR0L6W2 | 110ms | 95ms | 14ms | 3rd |
| Unattributable | 100ms | 6ms | 0ms | 1st |
| https://vitalitydentistry.com/ | 64ms | 2ms | 1ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-N3NVVSVB | 50ms | 37ms | 13ms | 3rd |
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
AAsset Compression1 of 1 asset host still on gzipPASS
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
Network Waterfall51 requests over 2058msINFO
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 | 110ms | 195 KB | 32% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 50ms | 116 KB | 62% | $1/mo | Optional |
49% 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
62% 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
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