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.

2.50 s

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

4.41 s

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

150 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.

4.86 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.

5.56 s

Page Load Progression

622 ms

1.2 s

1.9 s

2.5 s

3.1 s

3.7 s

4.4 s

5.0 s

Checks

20 PASS 2 REVIEW 1 FIX

JS Execution Cost

Action

2713ms total JS execution

FIX

2713ms total JS execution

https://minimaxh3.art/assets/framework-DJH1pfSr.js: 857ms CPU time

https://minimaxh3.art/: 757ms CPU time

https://minimaxh3.art/assets/demo-reel-DuPcTGlO.js: 706ms CPU time

Unattributable: 393ms CPU time

Main Thread Breakdown

Other 37% Script Evaluation 28% Style & Layout 23% Rendering 9%

Script	Total	Scripting	Parse/Compile	Party
https://minimaxh3.art/assets/framework-DJH1pfSr.js	857ms	638ms	0ms	1st
https://minimaxh3.art/	757ms	24ms	29ms	1st
https://minimaxh3.art/assets/demo-reel-DuPcTGlO.js	706ms	74ms	0ms	1st
Unattributable	393ms	30ms	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.

HTTP Caching

public, max-age=0, s-maxage=60, must-revalidate

REVIEW

public, max-age=0, s-maxage=60, must-revalidate

Cache-Control header is set

Got: public, max-age=0, s-maxage=60, must-revalidate

CDN TTL: 1 minute (s-maxage=60)

No ETag or Last-Modified header

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

Cache-Control

public, max-age=0, s-maxage=60, must-revalidate

Directive	Value	Meaning
public	—	Any cache may store this response
max-age	0	Cache for 0 seconds
s-maxage	60	CDN caches for 1 minute
must-revalidate	—	Must recheck with server after expiry

A+

Page Weight Budget

633 KB transferred, 101 requests

PASS

633 KB transferred, 101 requests

Page weighs 2.1 MB (633 KB transferred)

101 HTTP requests — consider bundling or reducing

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Estimated 0.13 g CO2 per page load

633 KB transferred

101 requests

0.13 g CO2 per page load

Images 292.4 KiB 46%

JavaScript 214.9 KiB 34%

HTML 49.6 KiB 8%

CSS 35.0 KiB 6%

Fonts 20.6 KiB 3%

Other 15.6 KiB 2%

Other 3.9 KiB 1%

Other 937 B 0%

Other 0 B 0%

0 2.4 MB 4.9 MB

Under budget

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

A+

Third-Party Impact

1% third-party, 0 ms blocking

PASS

1% third-party, 0 ms blocking

Third-party code accounts for 1% of page weight (6.2 KiB of 633.1 KiB)

Third-party blocking time is low (0 ms)

99%

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+

Image Optimization

10 images, 0 KB saveable

PASS

10 images, 0 KB saveable

All images are well-optimized

10 images 104 KB

0 oversized -0 KB

0 legacy format

0 missing dimensions CLS risk

A+

Font Loading

2 fonts (21 KB)

PASS

2 fonts (21 KB)

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

Web fonts

21 KB total

Render-blocking

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

outfit-19c86109.woff2 woff2 swap

Size 7 KB

Load time 196 ms

Start 126 ms

Risk FOUT — text flashes from fallback to web font

outfit-be21ba2a.woff2 woff2 swap

Size 14 KB

Load time 237 ms

Start 126 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

73 scripts, 0 KB unused

PASS

73 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://minimaxh3.art/assets/global-error-CVl8f3Cz.js	1 KB	—	✓	1st
https://minimaxh3.art/assets/framework-DJH1pfSr.js	60 KB	—	✓	1st
https://minimaxh3.art/assets/rolldown-runtime-QTnfLwEv.js	1 KB	—	✓	1st
https://minimaxh3.art/assets/url-utils-BQKFb685.js	1 KB	—	✓	1st
https://minimaxh3.art/assets/error-lSfRIvyA.js	1 KB	—	✓	1st
https://minimaxh3.art/assets/navigation-CBnhO4Zv.js	1 KB	—	✓	1st
https://minimaxh3.art/assets/react-DlbkFqaW.js	13 KB	—	✓	1st
https://minimaxh3.art/assets/BaseLink-B2dSlgLT.js	6 KB	—	✓	1st
https://minimaxh3.art/assets/locale-CtIECC0-.js	2 KB	—	✓	1st
https://minimaxh3.art/assets/react-client-CAjdHkmk.js	0 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

6 hints, 0 missing preconnects

PASS

6 hints, 0 missing preconnects

1 dns-prefetch redundant with preconnect on same origin

preconnect already does the DNS lookup; adding dns-prefetch to the same origin is at best a no-op. Sample: https://www.googletagmanager.com. Remove the redundant dns-prefetch entries.

1 URL(s) appear in multiple hints

The same href shouldn't appear in multiple hint rels -- one wins, the others are wasted markup and may confuse cache behavior. Sample: https://www.googletagmanager.com (dns-prefetch+preconnect).

Page uses 6 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

prefetch

—

6 resource hints configured

preconnect already does the DNS lookup; adding dns-prefetch to the same origin is at best a no-op. Sample: https://www.googletagmanager.com. Remove the redundant dns-prefetch entries.

Why this matters

Performance issues directly impact user engagement and conversion rates.

The same href shouldn't appear in multiple hint rels -- one wins, the others are wasted markup and may confuse cache behavior. Sample: https://www.googletagmanager.com (dns-prefetch+preconnect).

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=0 (≤ 5min) is appropriate

PASS

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

Got: public, max-age=0, s-maxage=60, must-revalidate

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: RSC, Accept, Next-Router-State-Tree, Next-Router-Prefetch, Next-Router-Segment-P...

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

101 resources · 633 KB · 0 KB savings available

PASS

101 resources · 633 KB · 0 KB savings available

Within 1MB page-weight target

Got: 633 KB

7 third-party resources (1% of weight)

101 resources · 633.1 KiB · 7 third-party Within 1MB page-weight target

Image 49% · 308.0 KiB

JavaScript 34% · 214.9 KiB

Document 8% · 49.6 KiB

CSS 6% · 35.0 KiB

Font 3% · 20.6 KiB

Other 1% · 4.8 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

101 resources			633.1 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

CSS Performance Depth

1 CSS depth issue(s) detected

PASS

1 CSS depth issue(s) detected

1 `@font-face` rule(s) without `font-display` -- causes FOIT

An `@font-face` rule without `font-display` causes Flash of Invisible Text (FOIT): the browser hides the styled text for up to 3 seconds while the custom font downloads, then either swaps to fallback (Chrome / Firefox) or stays invisible (older Safari). Add `font-display: swap` (shows fallback immediately, swaps in the custom font when ready) or `font-display: optional` (uses fallback if the font isn't ready in 100ms; never causes visible swap). Either eliminates FOIT outright.

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall

101 requests over 2664ms

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 (2026-07-28 — 2026-08-24)

LCP (p75)

1867 ms

88% good

INP (p75)

73 ms

95% good

CLS (p75)

0.010

97% good

FCP (p75)

1646 ms

TTFB (p75)

871 ms

This origin passes Core Web Vitals assessment

Image Optimization

48 images, 528 KB total, 165 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

528 KB

Oversized

Wasted

165 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.