Performance

· 22 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

100

Accessibility

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.

553 ms

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

785 ms

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.

0.003

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

636 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

787 ms

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

16 PASS 2 REVIEW 1 FIX

HTTP Caching

Action

No cache headers

FIX

No cache headers

No Cache-Control header found

Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

Page Weight Budget

1.1 MB transferred, 249 requests

REVIEW

1.1 MB transferred, 249 requests

Page weighs 2.0 MB (1.1 MB transferred)

249 HTTP requests — consider bundling or reducing

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

Estimated 0.23 g CO2 per page load

1.1 MB transferred

249 requests

0.23 g CO2 per page load

Images 548.6 KiB 49%

Other 181.7 KiB 16%

Other 141.5 KiB 13%

JavaScript 121.5 KiB 11%

Fonts 76.2 KiB 7%

HTML 53.6 KiB 5%

Other 630 B 0%

Other 159 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

Main HTML Cache-Control

No Cache-Control header on main HTML response

REVIEW

No Cache-Control header on main HTML response

Main HTML response has no Cache-Control header

Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.

A+

Third-Party Impact

8% third-party, 0 ms blocking

PASS

8% third-party, 0 ms blocking

Third-party code accounts for 8% of page weight (94.6 KiB of 1.1 MiB)

Third-party blocking time is low (0 ms)

92%

First-party Third-party

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

Image Optimization

19 images, 0 KB saveable

PASS

19 images, 0 KB saveable

https://dollar.cafe/pluto-images/funnel/images/9ee... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

19 images 549 KB

0 oversized -0 KB

0 legacy format

2 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

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A+

JS Execution Cost

291ms total JS execution

PASS

291ms total JS execution

Unattributable: 134ms CPU time

https://dollar.cafe/: 103ms CPU time

https://dollar.cafe/~partytown/partytown-sandbox-s...: 54ms CPU time

Main Thread Breakdown

Script Evaluation 41% Other 35% Style & Layout 15% Parse HTML & CSS 3%

Script	Total	Scripting	Parse/Compile	Party
Unattributable	134ms	26ms	0ms	1st
https://dollar.cafe/	103ms	8ms	3ms	1st
https://dollar.cafe/~partytown/partytown-sandbox-sw.html?1787733036041	54ms	44ms	1ms	1st

A+

Font Loading

2 fonts (76 KB)

PASS

2 fonts (76 KB)

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

Web fonts

76 KB total

Render-blocking

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

2543cbb5aaf5009d.woff2 woff2 swap

Size 47 KB

Load time 47 ms

Start 90 ms

Risk FOUT — text flashes from fallback to web font

2347556cb98273b2.woff2 woff2 swap

Size 29 KB

Load time 60 ms

Start 90 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

29 scripts, 30 KB unused

PASS

29 scripts, 30 KB unused

https://www.datadoghq-browser-agent.com/us1/v7/dat...: 30 KB unused (50%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 30 KB

30 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.datadoghq-browser-agent.com/us1/v7/datadog-rum.js	60 KB	30 KB (50%)	✓	3rd
https://dollar.cafe/_astro/analytics.D6t8g7IC.js	2 KB	—	✓	1st
https://dollar.cafe/_astro/datadogRum.-0hL22Eu.js	5 KB	—	✓	1st
https://dollar.cafe/_astro/LandingHero.astro_astro_type_script_index_0_lang.CIoWYZVZ.js	1 KB	—	✓	1st
https://dollar.cafe/_astro/TopPicks.astro_astro_type_script_index_1_lang.T88Fxnwn.js	0 KB	—	✓	1st
https://dollar.cafe/_astro/mobileAppPromoModal.DpYk1UeV.js	3 KB	—	✓	1st
https://dollar.cafe/_astro/MobileBottomBar.astro_astro_type_script_index_0_lang.DYEmhC6F.js	0 KB	—	✓	1st
https://dollar.cafe/_astro/FooterAppAdoption.astro_astro_type_script_index_0_lang.BMIAu9kg.js	1 KB	—	✓	1st
https://dollar.cafe/_astro/MobileAppPromoModal.astro_astro_type_script_index_0_lang.kf5Ykq58.js	0 KB	—	✓	1st
https://dollar.cafe/_astro/OwnerAnalytics.astro_astro_type_script_index_0_lang.PbIqrnZZ.js	1 KB	—	✓	1st

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

No optimization needed

PASS

No optimization needed

No resource hint issues

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+

Server-Timing Observability

1 Server-Timing entries advertised

PASS

1 Server-Timing entries advertised

Server-Timing header advertises 1 timing entries

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.

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

249 resources · 1.1 MB · 30 KB savings available

PASS

249 resources · 1.1 MB · 30 KB savings available

Page weight 1.1 MB exceeds 1 MB target by 100 KB

Got: 1.1 MB Expected: ≤ 1 MB

12 third-party resources (8% of weight)

249 resources · 1.1 MiB · 12 third-party 99.9 KiB over 1MB target

Image 51% · 569.9 KiB

JavaScript 27% · 300.7 KiB

Document 15% · 173.8 KiB

Font 7% · 76.2 KiB

Other 0% · 3.3 KiB

~29.5 KiB of savings available

Remove unused JavaScript: 29.5 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

249 resources			1.1 MiB

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

249 requests over 1918ms

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)

1111 ms

90% good

INP (p75)

62 ms

97% good

CLS (p75)

0.000

100% good

FCP (p75)

998 ms

TTFB (p75)

557 ms

This origin passes Core Web Vitals assessment

Image Optimization

1 images, 95 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

95 KB

1 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.