Performance

· 26 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

Performance

Accessibility

100

Best Practices

100

SEO

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

2.05 s

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

3.56 s

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

28 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.220

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

2.05 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.

3.95 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

15 PASS 8 REVIEW

Page Weight Budget

1.2 MB transferred, 35 requests

REVIEW

1.2 MB transferred, 35 requests

Page weighs 1.6 MB (1.2 MB transferred)

Images are 1.1 MB — compress or use modern formats

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Got: 1.1 MB

35 HTTP requests

Estimated 0.26 g CO2 per page load

1.2 MB transferred

35 requests

0.26 g CO2 per page load

Images 1.1 MiB 86%

JavaScript 120.5 KiB 10%

Fonts 23.9 KiB 2%

CSS 10.3 KiB 1%

Other 6.7 KiB 1%

Other 6.0 KiB 0%

HTML 2.1 KiB 0%

Other 574 B 0%

Other 0 B 0%

0 2.4 MB 4.9 MB

Under budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Image Optimization

9 images, 0 KB saveable

REVIEW

9 images, 0 KB saveable

All images are well-optimized

9 images 1.1 MB

0 oversized -0 KB

5 legacy format

0 missing dimensions CLS risk

JS Execution Cost

883ms total JS execution

REVIEW

883ms total JS execution

https://foryouproperty.com/: 397ms CPU time

Unattributable: 244ms CPU time

https://foryouproperty.com/assets/react-vendor-DQw...: 242ms CPU time

Main Thread Breakdown

Other 35% Script Evaluation 31% Style & Layout 26% Rendering 6%

Script	Total	Scripting	Parse/Compile	Party
https://foryouproperty.com/	397ms	13ms	2ms	1st
Unattributable	244ms	42ms	0ms	1st
https://foryouproperty.com/assets/react-vendor-DQwZUS6v.js	242ms	203ms	1ms	1st

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.

Page Weight Inventory

35 resources · 1.2 MB · 45 KB savings available

REVIEW

35 resources · 1.2 MB · 45 KB savings available

Page weight 1.2 MB exceeds 1 MB target by 222 KB

Got: 1.2 MB Expected: ≤ 1 MB

23 third-party resources (26% of weight)

1 resources over 200KB

35 resources · 1.2 MiB · 23 third-party 221.6 KiB over 1MB target

Image 87% · 1.1 MiB

JavaScript 10% · 120.5 KiB

Font 2% · 23.9 KiB

CSS 1% · 10.3 KiB

Other 1% · 7.3 KiB

Document 0% · 2.1 KiB

~44.9 KiB of savings available

Remove unused JavaScript: 44.9 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

35 resources			1.2 MiB

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

ETag present — enables conditional (304) responses

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

Third-Party Impact

26% third-party, 0 ms blocking

PASS

26% third-party, 0 ms blocking

Third-party code accounts for 26% of page weight (319.9 KiB of 1.2 MiB)

Third-party blocking time is low (0 ms)

74%

26%

First-party Third-party

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

1 fonts (24 KB)

PASS

1 fonts (24 KB)

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

Web fonts

24 KB total

Render-blocking

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

xn7gYHE41ni1AdIRggexSvf... woff2 swap

Size 24 KB

Load time 43 ms

Start 469 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

4 scripts, 45 KB unused

PASS

4 scripts, 45 KB unused

https://foryouproperty.com/assets/supabase-B10WVYi...: 24 KB unused (75%)

Consider code splitting or tree shaking to reduce unused code.

https://foryouproperty.com/assets/react-vendor-DQw...: 21 KB unused (38%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 45 KB

45 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://foryouproperty.com/assets/supabase-B10WVYiy.js	32 KB	24 KB (75%)	✓	1st
https://foryouproperty.com/assets/react-vendor-DQwZUS6v.js	56 KB	21 KB (38%)	✓	1st
https://foryouproperty.com/assets/index-DuAcMPsk.js	32 KB	—	✓	1st
https://bolt.new/badge.js?s=e00fca03-0fb3-4c46-94dd-af6420d13639	0 KB	—	✓	3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

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

2 hints, 0 missing preconnects

PASS

2 hints, 0 missing preconnects

Page uses 2 resource hint(s)

Current Resource Hints

preconnect

preload

—

dns-prefetch

—

prefetch

—

2 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

3 server-response signal(s) detected

PASS

3 server-response signal(s) detected

`Cache-Status` header present (RFC 9211): "Netlify Edge"; fwd=stale; fwd-status=200; stored

The page returns a `Cache-Status` header -- the standardized way for CDNs and caches to communicate per-hop cache state to debugging tools. Format: `Cache-Status: cdn-name; hit; ttl=300` (or `; fwd=miss` / `; fwd=stale`). Standard alternative to vendor-specific `X-Cache` patterns each CDN had historically. Cloudflare, Fastly, and Akamai all support emitting it.

`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).

`ETag` present -- conditional GET supported

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

A+

JavaScript Blocking

No render-blocking JS or document.write usage detected

PASS

No render-blocking JS or document.write usage detected

No JavaScript blocking issues detected

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

35 requests over 879ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Image Optimization

21 images, 942 KB total, 607 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

942 KB

Oversized

Wasted

607 KB

19 missing dimensions 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.