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

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.

1.88 s

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

3.40 s

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

7 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.

2.44 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.

3.40 s

Page Load Progression

558 ms

1.1 s

1.7 s

2.2 s

2.8 s

3.3 s

3.9 s

4.5 s

Checks

17 PASS 6 REVIEW

Image Optimization

23 images, 0 KB saveable

REVIEW

23 images, 0 KB saveable

All images are well-optimized

23 images 98 KB

0 oversized -0 KB

23 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.

Main HTML Cache-Control

Cache-Control present but without max-age

REVIEW

Cache-Control present but without max-age

Main HTML Cache-Control has no max-age: private

Got: private

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

private

REVIEW

private

Cache-Control header is set

Got: private

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

private

Directive	Value	Meaning
private	—	Only browser cache, not CDN/proxy

A+

Page Weight Budget

134 KB transferred, 31 requests

PASS

134 KB transferred, 31 requests

Page weighs 155 KB (134 KB transferred)

31 HTTP requests

Estimated 0.03 g CO2 per page load

134 KB transferred

31 requests

0.03 g CO2 per page load

Images 98.5 KiB 74%

JavaScript 17.4 KiB 13%

HTML 11.4 KiB 8%

CSS 5.3 KiB 4%

Other 1.4 KiB 1%

0 2.4 MB 4.9 MB

Under budget

A+

Third-Party Impact

13% third-party, 0 ms blocking

PASS

13% third-party, 0 ms blocking

Third-party code accounts for 13% of page weight (17.8 KiB of 134.0 KiB)

Third-party blocking time is low (0 ms)

87%

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+

JS Execution Cost

440ms total JS execution

PASS

440ms total JS execution

Unattributable: 220ms CPU time

http://www.elkot.info/: 161ms CPU time

http://www.google-analytics.com/ga.js: 58ms CPU time

Third-party scripts: 58ms (13% of total)

Main Thread Breakdown

Other 55% Script Evaluation 19% Style & Layout 14% Rendering 7% Script Parsing & Compilation 3%

Script	Total	Scripting	Parse/Compile	Party
Unattributable	220ms	6ms	0ms	1st
http://www.elkot.info/	161ms	19ms	5ms	1st
http://www.google-analytics.com/ga.js	58ms	51ms	7ms	3rd

A+

Font Loading

No web fonts (system fonts)

PASS

No web fonts (system fonts)

No web fonts loaded — system fonts are fastest

No web fonts loaded — system fonts are optimal.

A+

JS Bundles

1 scripts, 0 KB unused

PASS

1 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.google-analytics.com/ga.js	17 KB	—	✓	3rd

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

No optimization needed

PASS

No optimization needed

No resource hint issues

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+

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).

No `ETag` or `Last-Modified` -- conditional GET not supported

Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.

A+

Page Weight Inventory

31 resources · 134 KB · 0 KB savings available

PASS

31 resources · 134 KB · 0 KB savings available

Within 1MB page-weight target

Got: 134 KB

4 third-party resources (13% of weight)

31 resources · 134.0 KiB · 4 third-party Within 1MB page-weight target

Image 74% · 98.5 KiB

JavaScript 13% · 17.4 KiB

Document 10% · 12.8 KiB

CSS 4% · 5.3 KiB

Other 0% · 0 B

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

31 resources			134.0 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

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

31 requests over 2152ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

13% of JavaScript execution is third-party

First-party Third-party 58ms · 0KB · $1/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Google Analytics www.google-analytics.com	Analytics	58ms	0 KB	—	$1/mo	Optional

Google Analytics

Analytics

Optional

Execution 58ms

Transfer 0 KB

Monthly Cost $1/mo

How third-party costs are calculated

Image Optimization

41 images, 93 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

93 KB

24 missing lazy loading

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