Performance

· 28 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.

2.55 s

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

6.11 s

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

5.27 s

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

0.028

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

11.73 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.

41.66 s

Page Load Progression

1.3 s

2.5 s

3.8 s

5.1 s

6.4 s

7.6 s

8.9 s

10.2 s

Checks

11 PASS 8 REVIEW 5 FIX

Page Weight Budget

Action

6.2 MB transferred, 648 requests

FIX

6.2 MB transferred, 648 requests

Page weighs 15.4 MB (6.2 MB transferred)

JavaScript is 3.1 MB — consider code splitting or lazy loading

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

Got: 3.1 MB

Fonts are 223 KB — consider subsetting or using system fonts

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

Got: 223 KB

648 HTTP requests — consider bundling or reducing

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

Estimated 1.3 g CO2 per page load

6.2 MB transferred

648 requests

1.3 g CO2 per page load

JavaScript 3.1 MiB 50%

Other 1.4 MiB 22%

Images 982.1 KiB 15%

HTML 302.8 KiB 5%

Fonts 222.9 KiB 3%

Other 106.1 KiB 2%

CSS 86.6 KiB 1%

Other 61.6 KiB 1%

Other 9.8 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

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

27133ms total JS execution

FIX

27133ms total JS execution

https://www.newforestclothing.co.uk/: 9886ms CPU time

Unattributable: 3337ms CPU time

https://cdn.shopify.com/extensions/01a15521-261e-7...: 1783ms CPU time

https://www.newforestclothing.co.uk/cdn/wpm/b05c62...: 1610ms CPU time

https://cdn.shopify.com/extensions/01a153ea-bf84-7...: 879ms CPU time

Third-party scripts: 10086ms (37% of total)

Main Thread Breakdown

Script Evaluation 42% Other 27% Style & Layout 22% Script Parsing & Compilation 4% Rendering 3%

Script	Total	Scripting	Parse/Compile	Party
https://www.newforestclothing.co.uk/	9886ms	1506ms	54ms	1st
Unattributable	3337ms	490ms	0ms	1st
https://cdn.shopify.com/extensions/01a15521-261e-799f-a4b6-b8af1fa5b544/judgeme-793/assets/loader.js	1783ms	1089ms	2ms	3rd
https://www.newforestclothing.co.uk/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js	1610ms	1219ms	39ms	1st
https://cdn.shopify.com/extensions/01a153ea-bf84-7da7-9661-925bf0b3df0e/region-restrictions-393/assets/ip-blocker-embed.min.js	879ms	86ms	10ms	3rd
https://static.klaviyo.com/onsite/js/vendors~signup_forms~product_recommendations~in_app_forms~reviews~atlas.c9ce13ff54216.js?cb=2	862ms	595ms	4ms	3rd
https://connect.facebook.net/en_US/fbevents.js	817ms	532ms	84ms	3rd
https://connect.facebook.net/signals/config/393805915499176?v=2.9.423&r=stable&domain=www.newforestclothing.co.uk&im=1&hme=766752a074f0cb0756dd3275a46fdecbcfe3de1ab8f573546734b619e44d384f&ex_m=118%2C241%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C210%2C255%2C84%2C274%2C273%2C272%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C324%2C325%2C326%2C323%2C340%2C362%2C248%2C237%2C70%2C238%2C236%2C365%2C356%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189	737ms	421ms	74ms	3rd
https://www.googletagmanager.com/gtag/js?id=AW-16646154322	563ms	481ms	78ms	3rd
https://www.googletagmanager.com/gtag/js?id=AW-997839737	498ms	418ms	76ms	3rd

Showing top 10 of 43 scripts

JS Bundles

Action

391 scripts, 877 KB unused

FIX

391 scripts, 877 KB unused

https://www.googletagmanager.com/gtag/js?id=AW-997...: 116 KB unused (71%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=GT-KF6...: 116 KB unused (76%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=GT-KF6...: 69 KB unused (45%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=AW-166...: 61 KB unused (37%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=AW-166...: 61 KB unused (37%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 877 KB

877 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=AW-997839737&cx=c&gtm=4e6af0	165 KB	116 KB (71%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=GT-KF6XSSZ&cx=c&gtm=4e6af0	153 KB	116 KB (76%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=GT-KF6XSSZ	153 KB	69 KB (45%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=AW-16646154322	164 KB	61 KB (37%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=AW-16646154322	164 KB	61 KB (37%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=AW-997839737	165 KB	58 KB (35%)	✓	3rd
https://sdk-static.loyaltylion.net/static/2/chunk-c95dbb-42d3b8ef7c062952.js	52 KB	48 KB (93%)	✓	3rd
https://static.klaviyo.com/onsite/js/Render.46878820e7306.js?cb=2	66 KB	44 KB (67%)	✓	3rd
https://connect.facebook.net/signals/config/393805915499176?v=2.9.423&r=stable&domain=www.newforestclothing.co.uk&im=1&hme=766752a074f0cb0756dd3275a46fdecbcfe3de1ab8f573546734b619e44d384f&ex_m=118%2C241%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C210%2C255%2C84%2C274%2C273%2C272%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C324%2C325%2C326%2C323%2C340%2C362%2C248%2C237%2C70%2C238%2C236%2C365%2C356%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189	160 KB	40 KB (25%)	✓	3rd
https://sdk-static.loyaltylion.net/static/2/lion-app-integrated-f850e8df330a9033.js	50 KB	37 KB (75%)	✓	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

648 resources · 6.2 MB · 877 KB savings available

FIX

648 resources · 6.2 MB · 877 KB savings available

Page weight 6.2 MB exceeds 1 MB target by 5.2 MB

Got: 6.2 MB Expected: ≤ 1 MB

~877 KB of savings available

357 third-party resources (58% of weight)

648 resources · 6.2 MiB · 357 third-party 5.2 MiB over 1MB target

JavaScript 71% · 4.4 MiB

Image 15% · 989.5 KiB

Document 5% · 311.5 KiB

Font 4% · 262.5 KiB

CSS 3% · 175.1 KiB

Other 2% · 126.5 KiB

~877.0 KiB of savings available

Remove unused JavaScript: 877.0 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

648 resources			6.2 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

58% third-party, 0 ms blocking

REVIEW

58% third-party, 0 ms blocking

Third-party code accounts for 58% of page weight (3.6 MiB of 6.2 MiB)

Third-party blocking time is low (0 ms)

42%

58%

First-party Third-party

Image Optimization

47 images, 0 KB saveable

REVIEW

47 images, 0 KB saveable

All images are well-optimized

47 images 973 KB

0 oversized -0 KB

18 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.

Asset Compression

2 of 7 asset hosts still on gzip

REVIEW

2 of 7 asset hosts still on gzip

cdn.shopify.com serves assets with brotli (assets: 23)

Got: cdn.shopify.com (text/javascript)

static.klaviyo.com serves assets with brotli (assets: 11)

Got: static.klaviyo.com (application/javascript)

public-images.judge.me serves assets with brotli (assets: 6)

Got: public-images.judge.me (image/svg+xml)

www.googletagmanager.com serves assets with brotli (assets: 5)

Got: www.googletagmanager.com (application/javascript)

static-tracking.klaviyo.com serves assets with brotli (assets: 4)

Got: static-tracking.klaviyo.com (text/javascript)

agechecked.verifico.io serves assets with gzip; brotli would be ~20% smaller (assets: 3)

Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.

Got: agechecked.verifico.io (application/javascript)

bat.bing.com serves assets with gzip; brotli would be ~20% smaller (assets: 3)

Got: bat.bing.com (application/javascript)

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.

JavaScript Blocking

2 JS blocking issue(s) detected

REVIEW

2 JS blocking issue(s) detected

2 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.

Total JS execution time is 27.1 s -- over the 3.5s budget

Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.

CSS Performance Depth

2 CSS depth issue(s) detected

REVIEW

2 CSS depth issue(s) detected

12 render-blocking stylesheet(s) -- recommended: <=3

Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.

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+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

10 fonts (262 KB)

PASS

10 fonts (262 KB)

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

Web fonts

262 KB total

Render-blocking

of 10

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

montserrat_n5.07ef3781d... woff2 swap

Size 20 KB

Load time 33 ms

Start 1.2 s

Risk FOUT — text flashes from fallback to web font

ebgaramond_n8.5ffe99aca... woff2 swap

Size 28 KB

Load time 33 ms

Start 1.2 s

Risk FOUT — text flashes from fallback to web font

x-font-woff;charset=utf... woff swap

Size 1 KB

Load time 57 ms

Start 1.6 s

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

montserrat_n7.3c434e22b... woff2 swap

Size 20 KB

Load time 97 ms

Start 1.6 s

Risk FOUT — text flashes from fallback to web font

ebgaramond_n5.3e25a5488... woff2 swap

Size 29 KB

Load time 57 ms

Start 1.7 s

Risk FOUT — text flashes from fallback to web font

SlGUmQSNjdsmc35JDF1K5GR... woff2 swap

Size 43 KB

Load time 13 ms

Start 5.1 s

Risk FOUT — text flashes from fallback to web font

JTUSjIg1_i6t8kCHKm459Wl... woff2 swap

Size 35 KB

Load time 13 ms

Start 5.1 s

Risk FOUT — text flashes from fallback to web font

SlGWmQSNjdsmc35JDF1K5GR... woff2 swap

Size 47 KB

Load time 13 ms

Start 5.1 s

Risk FOUT — text flashes from fallback to web font

montserrat_n4.81949fa0a... woff2 swap

Size 20 KB

Load time 12 ms

Start 13.2 s

Risk FOUT — text flashes from fallback to web font

montserrat_n7.3c434e22b... woff2 swap

Size 20 KB

Load time 10 ms

Start 13.2 s

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+

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

207 hints, 0 missing preconnects

PASS

207 hints, 0 missing preconnects

Page uses 207 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

prefetch

+183

193

207 resource hints configured

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+

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

1 server-response signal(s) detected

PASS

1 server-response signal(s) detected

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+

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+

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

648 requests over 13210ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

37% of JavaScript execution is third-party

First-party Third-party 10086ms · 1592KB · £52/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
cdn.shopify.com cdn.shopify.com	Other	1783ms	4 KB	—	£9/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	879ms	21 KB	—	£5/mo	Costly
static.klaviyo.com static.klaviyo.com	Other	862ms	10 KB	—	£4/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	817ms	112 KB	32%	£4/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	737ms	160 KB	25%	£4/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	563ms	164 KB	37%	£3/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	498ms	165 KB	35%	£3/mo	Costly
static.klaviyo.com static.klaviyo.com	Other	433ms	8 KB	—	£2/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	395ms	15 KB	—	£2/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	313ms	23 KB	—	£2/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	271ms	40 KB	60%	£1/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	253ms	153 KB	45%	£1/mo	Costly
static.klaviyo.com static.klaviyo.com	Other	229ms	66 KB	67%	£1/mo	Costly
sdk-static.loyaltylion.net sdk-static.loyaltylion.net	Other	224ms	95 KB	43%	£1/mo	Costly
sdk-static.loyaltylion.net sdk-static.loyaltylion.net	Other	202ms	22 KB	—	£1/mo	Costly
static.klaviyo.com static.klaviyo.com	Other	180ms	21 KB	—	£1/mo	Optional
sdk-static.loyaltylion.net sdk-static.loyaltylion.net	Other	166ms	41 KB	—	£1/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	151ms	1 KB	—	£1/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	135ms	10 KB	—	£1/mo	Optional
a.klaviyo.com a.klaviyo.com	Other	133ms	33 KB	64%	£1/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	107ms	1 KB	—	£1/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	104ms	165 KB	71%	£1/mo	Optional
cdn.richpanel.com cdn.richpanel.com	Other	103ms	15 KB	—	£1/mo	Optional
static.klaviyo.com static.klaviyo.com	Other	100ms	7 KB	—	£1/mo	Optional
Bing UET bat.bing.com	Advertising	93ms	17 KB	—	£0/mo	Optional
static.klaviyo.com static.klaviyo.com	Other	85ms	26 KB	—	£0/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	83ms	153 KB	76%	£0/mo	Optional
cdn-v2.richpanel.com cdn-v2.richpanel.com	Other	72ms	30 KB	—	£0/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	64ms	8 KB	—	£0/mo	Optional
agechecked.verifico.io agechecked.verifico.io	Other	55ms	6 KB	—	£0/mo	Optional

cdn.shopify.com

Other

Costly

Execution 1783ms

Transfer 4 KB

Monthly Cost £9/mo

cdn.shopify.com

Other

Costly

Execution 879ms

Transfer 21 KB

Monthly Cost £5/mo

static.klaviyo.com

Other

Costly

Execution 862ms

Transfer 10 KB

Monthly Cost £4/mo

Facebook Pixel

Advertising

Costly

Execution 817ms

Transfer 112 KB

Unused 32%

Monthly Cost £4/mo

Facebook Pixel

Advertising

Costly

Execution 737ms

Transfer 160 KB

Unused 25%

Monthly Cost £4/mo

Google Tag Manager

Tag Manager

Costly

Execution 563ms

Transfer 164 KB

Unused 37%

Monthly Cost £3/mo

Google Tag Manager

Tag Manager

Costly

Execution 498ms

Transfer 165 KB

Unused 35%

Monthly Cost £3/mo

static.klaviyo.com

Other

Costly

Execution 433ms

Transfer 8 KB

Monthly Cost £2/mo

cdn.shopify.com

Other

Costly

Execution 395ms

Transfer 15 KB

Monthly Cost £2/mo

cdn.shopify.com

Other

Costly

Execution 313ms

Transfer 23 KB

Monthly Cost £2/mo

cdn.shopify.com

Other

Costly

Execution 271ms

Transfer 40 KB

Unused 60%

Monthly Cost £1/mo

Google Tag Manager

Tag Manager

Costly

Execution 253ms

Transfer 153 KB

Unused 45%

Monthly Cost £1/mo

static.klaviyo.com

Other

Costly

Execution 229ms

Transfer 66 KB

Unused 67%

Monthly Cost £1/mo

sdk-static.loyaltylion.net

Other

Costly

Execution 224ms

Transfer 95 KB

Unused 43%

Monthly Cost £1/mo

sdk-static.loyaltylion.net

Other

Costly

Execution 202ms

Transfer 22 KB

Monthly Cost £1/mo

static.klaviyo.com

Other

Optional

Execution 180ms

Transfer 21 KB

Monthly Cost £1/mo

sdk-static.loyaltylion.net

Other

Optional

Execution 166ms

Transfer 41 KB

Monthly Cost £1/mo

cdn.shopify.com

Other

Optional

Execution 151ms

Transfer 1 KB

Monthly Cost £1/mo

cdn.shopify.com

Other

Optional

Execution 135ms

Transfer 10 KB

Monthly Cost £1/mo

a.klaviyo.com

Other

Optional

Execution 133ms

Transfer 33 KB

Unused 64%

Monthly Cost £1/mo

cdn.shopify.com

Other

Optional

Execution 107ms

Transfer 1 KB

Monthly Cost £1/mo

Google Tag Manager

Tag Manager

Optional

Execution 104ms

Transfer 165 KB

Unused 71%

Monthly Cost £1/mo

cdn.richpanel.com

Other

Optional

Execution 103ms

Transfer 15 KB

Monthly Cost £1/mo

static.klaviyo.com

Other

Optional

Execution 100ms

Transfer 7 KB

Monthly Cost £1/mo

Bing UET

Advertising

Optional

Execution 93ms

Transfer 17 KB

Monthly Cost £0/mo

static.klaviyo.com

Other

Optional

Execution 85ms

Transfer 26 KB

Monthly Cost £0/mo

Google Tag Manager

Tag Manager

Optional

Execution 83ms

Transfer 153 KB

Unused 76%

Monthly Cost £0/mo

cdn-v2.richpanel.com

Other

Optional

Execution 72ms

Transfer 30 KB

Monthly Cost £0/mo

cdn.shopify.com

Other

Optional

Execution 64ms

Transfer 8 KB

Monthly Cost £0/mo

agechecked.verifico.io

Other

Optional

Execution 55ms

Transfer 6 KB

Monthly Cost £0/mo

These scripts may cost more than they're worth

cdn.shopify.com adds 1783ms and costs ~£9/month
cdn.shopify.com adds 879ms and costs ~£5/month
static.klaviyo.com adds 862ms and costs ~£4/month
Facebook Pixel adds 817ms and costs ~£4/month
Facebook Pixel adds 737ms and costs ~£4/month
Google Tag Manager adds 563ms and costs ~£3/month
Google Tag Manager adds 498ms and costs ~£3/month
static.klaviyo.com adds 433ms and costs ~£2/month
cdn.shopify.com adds 395ms and costs ~£2/month
cdn.shopify.com adds 313ms and costs ~£2/month
cdn.shopify.com adds 271ms and costs ~£1/month
Google Tag Manager adds 253ms and costs ~£1/month
static.klaviyo.com adds 229ms and costs ~£1/month
sdk-static.loyaltylion.net adds 224ms and costs ~£1/month
sdk-static.loyaltylion.net adds 202ms and costs ~£1/month

cdn.shopify.com takes 1783ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

cdn.shopify.com takes 879ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

static.klaviyo.com takes 862ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 817ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Facebook Pixel takes 737ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 563ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 498ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

static.klaviyo.com takes 433ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

cdn.shopify.com takes 395ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

cdn.shopify.com takes 313ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

cdn.shopify.com takes 271ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

60% of cdn.shopify.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Google Tag Manager takes 253ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

static.klaviyo.com takes 229ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

67% of static.klaviyo.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

sdk-static.loyaltylion.net takes 224ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

sdk-static.loyaltylion.net takes 202ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

64% of a.klaviyo.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

71% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

76% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

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 (2026-09-20 — 2026-10-17)

LCP (p75)

1642 ms

89% good

INP (p75)

191 ms

76% good

CLS (p75)

0.010

98% good

FCP (p75)

1381 ms

TTFB (p75)

835 ms

This origin passes Core Web Vitals assessment

Image Optimization

157 images, 448 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

157

Total Size

448 KB

1 missing alt text 7 missing dimensions 8 missing lazy loading

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