Performance

· 24 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

100

SEO

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

758 ms

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

3.22 s

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

154 ms

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

0.143

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

2.53 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.

5.45 s

Page Load Progression

425 ms

850 ms

1.3 s

1.7 s

2.1 s

2.5 s

3.0 s

3.4 s

Checks

9 PASS 6 REVIEW 5 FIX

Page Weight Budget

Action

4.7 MB transferred, 507 requests

FIX

4.7 MB transferred, 507 requests

Page weighs 10.1 MB (4.7 MB transferred)

JavaScript is 1.8 MB — consider code splitting or lazy loading

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Got: 1.8 MB

Images are 1.4 MB — compress or use modern formats

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

Got: 1.4 MB

Fonts are 241 KB — consider subsetting or using system fonts

Subset fonts to include only used characters, or switch to system font stacks.

Got: 241 KB

507 HTTP requests — consider bundling or reducing

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

Estimated 0.99 g CO2 per page load

4.7 MB transferred

507 requests

0.99 g CO2 per page load

JavaScript 1.8 MiB 37%

Images 1.4 MiB 30%

Other 984.4 KiB 20%

Fonts 241.3 KiB 5%

HTML 122.1 KiB 3%

Other 82.2 KiB 2%

CSS 70.7 KiB 1%

Other 52.4 KiB 1%

Other 6.8 KiB 0%

Other 0 B 0%

0 2.4 MB 4.9 MB

Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

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

JS Execution Cost

Action

2920ms total JS execution

FIX

2920ms total JS execution

https://www.kingkerosin.com/cdn/wpm/b05c62d7ewbe53...: 739ms CPU time

Unattributable: 552ms CPU time

https://www.kingkerosin.com/: 516ms CPU time

https://omnisnippet1.com/monitoring/monitoring.js?...: 260ms CPU time

https://cdn.shopify.com/extensions/01a15521-261e-7...: 206ms CPU time

Third-party scripts: 1053ms (36% of total)

Main Thread Breakdown

Script Evaluation 51% Other 21% Style & Layout 18% Script Parsing & Compilation 3%

Script	Total	Scripting	Parse/Compile	Party
https://www.kingkerosin.com/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js	739ms	420ms	7ms	1st
Unattributable	552ms	30ms	0ms	1st
https://www.kingkerosin.com/	516ms	83ms	16ms	1st
https://omnisnippet1.com/monitoring/monitoring.js?v=2026-10-19T20	260ms	125ms	2ms	3rd
https://cdn.shopify.com/extensions/01a15521-261e-799f-a4b6-b8af1fa5b544/judgeme-793/assets/loader.js	206ms	180ms	0ms	3rd
https://cdn.shopify.com/extensions/01a15521-261e-799f-a4b6-b8af1fa5b544/judgeme-793/assets/common-JGp1I94z.js	138ms	124ms	0ms	3rd
https://widget1-cdn.heyamplify.com/widget/dist/latest/pickystory-widget.min.js	129ms	105ms	14ms	3rd
https://scripts.clarity.ms/0.8.72-beta/clarity.js	96ms	89ms	2ms	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-11455159349&cx=c&gtm=4e6af0	84ms	75ms	9ms	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WPDKR5D9	82ms	69ms	12ms	3rd

Showing top 10 of 12 scripts

JS Bundles

Action

325 scripts, 519 KB unused

FIX

325 scripts, 519 KB unused

https://www.googletagmanager.com/gtag/js?id=AW-114...: 116 KB unused (71%)

Consider code splitting or tree shaking to reduce unused code.

https://widget1-cdn.heyamplify.com/widget/dist/lat...: 86 KB unused (47%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=G-MY7Y...: 70 KB unused (46%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/destination?...: 68 KB unused (42%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtm.js?id=GTM-WPD...: 64 KB unused (42%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 519 KB

519 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=AW-11455159349&cx=c&gtm=4e6af0	164 KB	116 KB (71%)	✓	3rd
https://widget1-cdn.heyamplify.com/widget/dist/latest/pickystory-widget.min.js	183 KB	86 KB (47%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-MY7YKPTLX9&cx=c&gtm=4e6af0	151 KB	70 KB (46%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-11455159349&cx=c&gtm=4e6af0	164 KB	68 KB (42%)	✓	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WPDKR5D9	154 KB	64 KB (42%)	✓	3rd
https://www.kingkerosin.com/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js	83 KB	40 KB (49%)	✓	1st
https://omnisnippet1.com/forms/main.js?v=2026-10-19T20	46 KB	31 KB (69%)	✓	3rd
https://consent.cookiebot.com/uc.js?cbid=6ddf9ce8-3153-41de-bddb-e04b1d7e03ab&implementation=gtm&consentmode-dataredaction=dynamic	37 KB	24 KB (65%)	✓	3rd
https://cdnjs.cloudflare.com/ajax/libs/Swiper/8.4.7/swiper-bundle.min.js	34 KB	20 KB (60%)	✓	3rd
https://js.smile.io/v1/smile-lite-7c2b649db2.js	4 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

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

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

Page Weight Inventory

Action

507 resources · 4.7 MB · 519 KB savings available

FIX

507 resources · 4.7 MB · 519 KB savings available

Page weight 4.7 MB exceeds 1 MB target by 3.7 MB

Got: 4.7 MB Expected: ≤ 1 MB

~519 KB of savings available

330 third-party resources (44% of weight)

507 resources · 4.7 MiB · 330 third-party 3.7 MiB over 1MB target

JavaScript 58% · 2.8 MiB

Image 31% · 1.4 MiB

Font 5% · 241.3 KiB

Document 3% · 128.9 KiB

Other 2% · 92.7 KiB

CSS 2% · 76.0 KiB

~519.4 KiB of savings available

Remove unused JavaScript: 519.4 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

507 resources			4.7 MiB

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.

Third-Party Impact

44% third-party, 0 ms blocking

REVIEW

44% third-party, 0 ms blocking

Third-party code accounts for 44% of page weight (2.1 MiB of 4.7 MiB)

Third-party blocking time is low (0 ms)

56%

44%

First-party Third-party

Image Optimization

42 images, 0 KB saveable

REVIEW

42 images, 0 KB saveable

All images are well-optimized

42 images 1.4 MB

0 oversized -0 KB

4 legacy format

0 missing dimensions CLS risk

Document Compression

Action

Document response served uncompressed

REVIEW

Document response served uncompressed

Main HTML response has no Content-Encoding (uncompressed)

The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.

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.

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+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

10 fonts (241 KB)

PASS

10 fonts (241 KB)

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

Web fonts

241 KB total

Render-blocking

of 10

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

titilliumweb_n4.dc3610b... woff2 swap

Size 17 KB

Load time 32 ms

Start 173 ms