Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop

100

Performance

Accessibility

Best Practices

SEO

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

986 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.14 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

0 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.

1.60 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.

1.14 s

Page Load Progression

375 ms

750 ms

1.1 s

1.5 s

1.9 s

2.2 s

2.6 s

3.0 s

Checks

18 PASS 5 REVIEW

Image Optimization

7 images, 0 KB saveable

REVIEW

7 images, 0 KB saveable

All images are well-optimized

7 images 0 KB

0 oversized -0 KB

7 legacy format

0 missing dimensions CLS risk

HTTP/3 (QUIC)

HTTP/3 not advertised

REVIEW

HTTP/3 not advertised

HTTP/3 (QUIC) is not advertised

HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.

Server-Timing Observability

No Server-Timing header found

REVIEW

No Server-Timing header found

Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

HTTP Caching

public, max-age=0, must-revalidate

REVIEW

public, max-age=0, must-revalidate

Cache-Control header is set

Got: public, max-age=0, must-revalidate

Last-Modified header present

Cache-Control

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

A+

Page Weight Budget

65 KB transferred, 21 requests

PASS

65 KB transferred, 21 requests

Page weighs 169 KB (65 KB transferred)

21 HTTP requests

Estimated 0.01 g CO2 per page load

65 KB transferred

21 requests

0.01 g CO2 per page load

JavaScript 29.8 KiB 46%

HTML 12.5 KiB 19%

Other 12.2 KiB 19%

Fonts 9.9 KiB 15%

Images 455 B 1%

Other 65 B 0%

CSS 0 B 0%

0 2.4 MB 4.9 MB

Under budget

A+

Third-Party Impact

No third-party resources

PASS

No third-party resources

No third-party resources detected

No third-party resources detected — all resources are first-party.

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

JS Execution Cost

230ms total JS execution

PASS

230ms total JS execution

https://vitalitydentistry.com/: 119ms CPU time

Unattributable: 110ms CPU time

Main Thread Breakdown

Other 50% Style & Layout 24% Rendering 10% Parse HTML & CSS 8% Script Evaluation 7%

Script	Total	Scripting	Parse/Compile	Party
https://vitalitydentistry.com/	119ms	9ms	2ms	1st
Unattributable	110ms	6ms	0ms	1st

A+

Font Loading

2 fonts (10 KB)

PASS

2 fonts (10 KB)

2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10 KB total

Render-blocking

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

dm-sans-latin.woff2 woff2 swap

Size 5 KB

Load time 124 ms

Start 575 ms

Risk FOUT — text flashes from fallback to web font

cormorant-garamond-lati... woff2 swap

Size 5 KB

Load time 223 ms

Start 575 ms

Risk FOUT — text flashes from fallback to web font

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+

JS Bundles

6 scripts, 0 KB unused

PASS

6 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://vitalitydentistry.com/airo-video-slots.js	5 KB	—	✓	1st
https://vitalitydentistry.com/airo-logo-orientation.js	5 KB	—	✓	1st
https://vitalitydentistry.com/analytics.js?v=5	5 KB	—	✓	1st
https://vitalitydentistry.com/floating-cta.js	5 KB	—	✓	1st
https://vitalitydentistry.com/cookie-consent.js?v=2	5 KB	—	✓	1st
https://vitalitydentistry.com/search.js	5 KB	—	✓	1st

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

3 hints, 0 missing preconnects

PASS

3 hints, 0 missing preconnects

Page uses 3 resource hint(s)

Current Resource Hints

preconnect

—

preload

dns-prefetch

—

prefetch

—

3 resource hints configured

A+

Document Compression

Document response uses brotli

PASS

Document response uses brotli

Main HTML response uses brotli (Content-Encoding: br)

Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Main HTML Cache-Control

Main HTML max-age=0 (≤ 5min) is appropriate

PASS

Main HTML max-age=0 (≤ 5min) is appropriate

Got: public, max-age=0, must-revalidate

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: Accept-Encoding

The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).

`Last-Modified` present -- timestamp-based conditional GET supported

Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.

A+

Page Weight Inventory

21 resources · 65 KB · 0 KB savings available

PASS

21 resources · 65 KB · 0 KB savings available

Within 1MB page-weight target

Got: 65 KB

21 resources · 64.9 KiB · 0 third-party Within 1MB page-weight target

JavaScript 46% · 29.8 KiB

Document 19% · 12.5 KiB

Media 19% · 12.2 KiB

Font 15% · 9.9 KiB

Image 1% · 455 B

Other 0% · 65 B

CSS 0% · 0 B

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

21 resources			64.9 KiB

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

JavaScript Blocking

1 JS blocking issue(s) detected

PASS

1 JS blocking issue(s) detected

3 render-blocking <script src> tag(s) without async/defer

Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.

A+

CSS Performance Depth

No CSS performance depth issues detected

PASS

No CSS performance depth issues detected

Asset Compression

No text asset hosts to measure

INFO

No text asset hosts to measure

No third-party or subdomain host served enough text assets to measure

Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.

Network Waterfall

21 requests over 1181ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Real-User Performance (CrUX)

Field metrics from the Chrome User Experience Report

INFO

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

This origin passes Core Web Vitals assessment

Image Optimization

7 images, 1078 KB total, 1008 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

1078 KB

Oversized

Wasted

1008 KB

1 missing lazy loading

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.