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.

1.07 s

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

2.93 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.

1.08 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.

2.94 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

20 PASS 3 REVIEW

JS Execution Cost

711ms total JS execution

REVIEW

711ms total JS execution

https://famstroke.com/: 477ms CPU time

Unattributable: 233ms CPU time

Main Thread Breakdown

Other 46% Style & Layout 22% Script Evaluation 12% Parse HTML & CSS 10% Rendering 7%

Script	Total	Scripting	Parse/Compile	Party
https://famstroke.com/	477ms	13ms	2ms	1st
Unattributable	233ms	18ms	0ms	1st

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

A+

Page Weight Budget

639 KB transferred, 24 requests

PASS

639 KB transferred, 24 requests

Page weighs 835 KB (639 KB transferred)

24 HTTP requests

Estimated 0.13 g CO2 per page load

639 KB transferred

24 requests

0.13 g CO2 per page load

Images 544.9 KiB 85%

JavaScript 34.2 KiB 5%

Fonts 30.6 KiB 5%

HTML 14.9 KiB 2%

CSS 13.2 KiB 2%

Other 1004 B 0%

Other 480 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.

Image Optimization

14 images, 0 KB saveable

PASS

14 images, 0 KB saveable

https://famstroke.com/logo.png is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

14 images 545 KB

0 oversized -0 KB

1 legacy format

1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

A+

Font Loading

1 fonts (31 KB)

PASS

1 fonts (31 KB)

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

Web fonts

31 KB total

Render-blocking

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

nunito-sans-latin.woff2 woff2 swap

Size 31 KB

Load time 53 ms

Start 87 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

5 scripts, 0 KB unused

PASS

5 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://famstroke.com/wp-content/uploads/ve-suggest.js?ver=1786723919	4 KB	—	✓	1st
https://famstroke.com/wp-content/themes/video-elements/grid.js?ver=1786723919	1 KB	—	✓	1st
https://famstroke.com/wp-content/themes/video-elements/series-nav.js?ver=1786723919	3 KB	—	✓	1st
https://famstroke.com/wp-content/themes/video-elements/touch-preview.js?ver=1786723919	2 KB	—	✓	1st
https://famstroke.com/piwik.php	24 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

Resource Hints

3 hints, 0 missing preconnects

PASS

3 hints, 0 missing preconnects

1 font preload(s) missing `crossorigin` -- font will be downloaded twice

Fonts are always fetched as crossorigin=anonymous; a preload without the attribute creates a different cache key, so the browser refetches when the actual font request happens. Sample: https://famstroke.com/wp-content/themes/video-elements/fonts/nunito-sans-latin.woff2. Add `crossorigin` (or `crossorigin="anonymous"`) to each preload.

Page uses 3 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

—

prefetch

—

3 resource hints configured

Why this matters

Performance issues directly impact user engagement and conversion rates.

A+

HTTP/3 (QUIC)

HTTP/3 advertised via Alt-Svc

PASS

HTTP/3 advertised via Alt-Svc

HTTP/3 (QUIC) is supported

First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.

A+

Compression Algorithm

Main response uses brotli

PASS

Main 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=60 (≤ 5min) is appropriate

PASS

Main HTML max-age=60 (≤ 5min) is appropriate

Got: max-age=60

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

Compressed response missing `Vary` header

The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.

`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

24 resources · 639 KB · 0 KB savings available

PASS

24 resources · 639 KB · 0 KB savings available

Within 1MB page-weight target

Got: 639 KB

24 resources · 639.2 KiB · 0 third-party Within 1MB page-weight target

Image 85% · 545.9 KiB

JavaScript 5% · 34.2 KiB

Font 5% · 30.6 KiB

Document 2% · 15.3 KiB

CSS 2% · 13.2 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

24 resources			639.2 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

1 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

A+

HTTP Caching

max-age=60 (1 minute)

PASS

max-age=60 (1 minute)

Cache-Control header is set

Got: max-age=60

Effective TTL: 1 minute (max-age=60)

Last-Modified header present

Cache-Control

max-age=60

Directive	Value	Meaning
max-age	60	Cache for 1 minute

Effective TTL: 60 seconds

Network Waterfall

24 requests over 448ms

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 (2026-07-16 — 2026-08-12)

LCP (p75)

1112 ms

95% good

INP (p75)

104 ms

92% good

CLS (p75)

0.000

99% good

FCP (p75)

1028 ms

TTFB (p75)

687 ms

This origin passes Core Web Vitals assessment

Image Optimization

74 images, 1264 KB total, 261 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

1264 KB

Oversized

Wasted

261 KB

26 missing dimensions 25 missing lazy loading

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