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.

6.55 s

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

21.96 s

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

3.55 s

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.

11.48 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.

25.50 s

Page Load Progression

982 ms

2.0 s

2.9 s

3.9 s

4.9 s

5.9 s

6.9 s

7.9 s

Checks

13 PASS 6 REVIEW 5 FIX

Page Weight Budget

Action

4.4 MB transferred, 452 requests

FIX

4.4 MB transferred, 452 requests

Page weighs 9.2 MB (4.4 MB transferred)

JavaScript is 1.7 MB — consider code splitting or lazy loading

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

Got: 1.7 MB

Images are 1.6 MB — compress or use modern formats

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

Got: 1.6 MB

452 HTTP requests — consider bundling or reducing

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

Estimated 0.93 g CO2 per page load

4.4 MB transferred

452 requests

0.93 g CO2 per page load

JavaScript 1.7 MiB 38%

Images 1.6 MiB 36%

Other 748.7 KiB 16%

Other 162.9 KiB 4%

HTML 125.2 KiB 3%

Other 66.2 KiB 1%

CSS 55.7 KiB 1%

Fonts 52.6 KiB 1%

Other 6.6 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

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

23110ms total JS execution

FIX

23110ms total JS execution

https://shopnoble.com/cdn/wpm/b05c62d7ewbe538af9pd...: 6014ms CPU time

https://cdn.shopify.com/extensions/01a1493b-a12f-7...: 4082ms CPU time

https://shopnoble.com/: 3364ms CPU time

Unattributable: 2050ms CPU time

https://cdn.shopify.com/extensions/01a15269-2ff3-7...: 1184ms CPU time

Third-party scripts: 10524ms (46% of total)

Main Thread Breakdown

Style & Layout 48% Script Evaluation 34% Other 12%

Script	Total	Scripting	Parse/Compile	Party
https://shopnoble.com/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js	6014ms	593ms	22ms	1st
https://cdn.shopify.com/extensions/01a1493b-a12f-7663-8b61-1bf8ca85855c/grouptify-combined-listings-464/assets/swatch-scripts.js	4082ms	749ms	16ms	3rd
https://shopnoble.com/	3364ms	707ms	163ms	1st
Unattributable	2050ms	348ms	0ms	1st
https://cdn.shopify.com/extensions/01a15269-2ff3-767b-9fc5-048eadddfcc0/rivo-loyalty-rewards-referrals-828/assets/ba_rivo_profile.js	1184ms	772ms	32ms	3rd
https://cdn.shopify.com/extensions/01a15436-1c9b-784e-adf8-bcb26bc03ad0/essential-post-purchase-upsell-1738/assets/stylex-CRzDzrLw.js	859ms	379ms	1ms	3rd
https://scripts.clarity.ms/0.8.72-beta/clarity.js	745ms	620ms	8ms	3rd
https://www.googletagmanager.com/gtag/js?id=AW-958581273	504ms	372ms	48ms	3rd
https://triplewhale-pixel.web.app/triplepx.js?shop=noblecarriage.myshopify.com	294ms	264ms	18ms	3rd
https://cdn.shopify.com/extensions/01a15525-5c18-762d-9675-96a0114179b6/loop-returns-519/assets/return-coverage-block-v2.js	289ms	213ms	31ms	3rd

Showing top 10 of 38 scripts

JS Bundles

Action

253 scripts, 523 KB unused

FIX

253 scripts, 523 KB unused

https://cdn.506.io/eg/script.js?shop=noblecarriage...: 87 KB unused (83%)

Consider code splitting or tree shaking to reduce unused code.

https://cdn.shopify.com/extensions/01a15436-1c9b-7...: 74 KB unused (69%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=AW-958...: 63 KB unused (38%)

Consider code splitting or tree shaking to reduce unused code.

https://cdn.shopify.com/extensions/01a15525-5c18-7...: 47 KB unused (50%)

Consider code splitting or tree shaking to reduce unused code.

https://shopnoble.com/cdn/wpm/b05c62d7ewbe538af9pd...: 44 KB unused (54%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 523 KB

523 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://cdn.506.io/eg/script.js?shop=noblecarriage.myshopify.com&v=12	105 KB	87 KB (83%)	✓	3rd
https://cdn.shopify.com/extensions/01a15436-1c9b-784e-adf8-bcb26bc03ad0/essential-post-purchase-upsell-1738/assets/stylex-CRzDzrLw.js	108 KB	74 KB (69%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=AW-958581273	165 KB	63 KB (38%)	✓	3rd
https://cdn.shopify.com/extensions/01a15525-5c18-762d-9675-96a0114179b6/loop-returns-519/assets/return-coverage-block-v2.js	93 KB	47 KB (50%)	✓	3rd
https://shopnoble.com/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js	83 KB	44 KB (54%)	✓	1st
https://cdn.shopify.com/extensions/01a10fc0-bc79-7aad-b6b5-46a542bdb0a9/labeler-4.5/assets/bundle.js	62 KB	43 KB (71%)	✓	3rd
https://cdn.shopify.com/extensions/01a15269-2ff3-767b-9fc5-048eadddfcc0/rivo-loyalty-rewards-referrals-828/assets/ba_rivo_profile.js	76 KB	30 KB (39%)	✓	3rd
https://triplewhale-pixel.web.app/triplefw.js?shop=noblecarriage.myshopify.com	49 KB	29 KB (61%)	✓	3rd
https://cdn.livechatinc.com/tracking.js	35 KB	28 KB (82%)	✓	3rd
https://triplewhale-pixel.web.app/triplepx.js?shop=noblecarriage.myshopify.com	49 KB	28 KB (57%)	✓	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

452 resources · 4.4 MB · 523 KB savings available

FIX

452 resources · 4.4 MB · 523 KB savings available

Page weight 4.4 MB exceeds 1 MB target by 3.4 MB

Got: 4.4 MB Expected: ≤ 1 MB

~523 KB of savings available

281 third-party resources (38% of weight)

452 resources · 4.4 MiB · 281 third-party 3.4 MiB over 1MB target

JavaScript 54% · 2.4 MiB

Image 36% · 1.6 MiB

Other 5% · 211.5 KiB

Document 3% · 130.5 KiB

CSS 1% · 55.7 KiB

Font 1% · 52.6 KiB

~522.9 KiB of savings available

Remove unused JavaScript: 522.9 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

452 resources			4.4 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.

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

1 of 5 asset hosts serve text uncompressed

REVIEW

1 of 5 asset hosts serve text uncompressed

cdn.shopify.com serves assets with brotli (assets: 42)

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

loyalty.rivo.io serves assets with brotli (assets: 13)

Got: loyalty.rivo.io (image/svg+xml)

static.klaviyo.com serves assets with brotli (assets: 9)

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

static-tracking.klaviyo.com serves assets with brotli (assets: 5)

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

fonts.googleapis.com serves text assets uncompressed (assets: 4)

The sampled response carries a text content type but no Content-Encoding, so the bytes go over the wire raw. Text compression typically removes 70-80% of a JS or CSS payload -- this is the single cheapest transfer win available on this host.

Got: fonts.googleapis.com (text/css)

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

6 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 23.1 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

13 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.

Third-Party Impact

38% third-party, 0 ms blocking

PASS

38% third-party, 0 ms blocking

Third-party code accounts for 38% of page weight (1.7 MiB of 4.4 MiB)

Third-party blocking time is low (0 ms)

62%

38%

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

39 images, 0 KB saveable

PASS

39 images, 0 KB saveable

https://cdn.shopify.com/s/files/1/0661/4371/files/... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

39 images 1.6 MB

0 oversized -0 KB

1 legacy format

1 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

A+

Font Loading

4 fonts (53 KB)

PASS

4 fonts (53 KB)

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

Web fonts

53 KB total

Render-blocking

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

jost_n6.ec1178db7a75151... woff2 swap

Size 14 KB

Load time 29 ms

Start 238 ms

Risk FOUT — text flashes from fallback to web font

jost_n5.7c8497861ffd15f... woff2 swap

Size 14 KB

Load time 46 ms

Start 238 ms

Risk FOUT — text flashes from fallback to web font

jost_n7.921dc18c13fa0b0... woff2 swap

Size 14 KB

Load time 50 ms

Start 788 ms

Risk FOUT — text flashes from fallback to web font

f8cef3fb44145ec4.woff woff swap

Size 11 KB

Load time 66 ms

Start 2.6 s

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

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)

Fixing the unchecked items could save ~3 KB and ~6 ms

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

197 hints, 0 missing preconnects

PASS

197 hints, 0 missing preconnects

Page uses 197 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

prefetch

+175

185

197 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

452 requests over 7833ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

46% of JavaScript execution is third-party

First-party Third-party 10524ms · 1034KB · €56/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
cdn.shopify.com cdn.shopify.com	Other	4082ms	22 KB	—	€22/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	1184ms	76 KB	39%	€6/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	859ms	108 KB	69%	€5/mo	Costly
Microsoft Clarity scripts.clarity.ms	Session Replay	745ms	26 KB	—	€4/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	504ms	165 KB	38%	€3/mo	Costly
triplewhale-pixel.web.app triplewhale-pixel.web.app	Other	294ms	49 KB	57%	€2/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	289ms	93 KB	50%	€2/mo	Costly
triplewhale-pixel.web.app triplewhale-pixel.web.app	Other	241ms	49 KB	61%	€1/mo	Costly
static.klaviyo.com static.klaviyo.com	Other	232ms	8 KB	—	€1/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	224ms	62 KB	71%	€1/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	222ms	15 KB	—	€1/mo	Costly
cdn.accessibly.app cdn.accessibly.app	Other	206ms	41 KB	—	€1/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	198ms	41 KB	69%	€1/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	149ms	4 KB	—	€1/mo	Optional
api.livechatinc.com api.livechatinc.com	Other	139ms	1 KB	—	€1/mo	Optional
cdn.506.io cdn.506.io	Other	129ms	105 KB	83%	€1/mo	Optional
static.klaviyo.com static.klaviyo.com	Other	116ms	21 KB	—	€1/mo	Optional
cdn.accessibly.app cdn.accessibly.app	Other	111ms	0 KB	—	€1/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	94ms	4 KB	—	€0/mo	Optional
LiveChat cdn.livechatinc.com	Chat	77ms	35 KB	82%	€0/mo	Optional
api.livechatinc.com api.livechatinc.com	Other	75ms	0 KB	—	€0/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	74ms	14 KB	—	€0/mo	Optional
static.klaviyo.com static.klaviyo.com	Other	62ms	26 KB	—	€0/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	60ms	28 KB	—	€0/mo	Optional
static.klaviyo.com static.klaviyo.com	Other	53ms	3 KB	—	€0/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	53ms	18 KB	—	€0/mo	Optional
cdn.shopify.com cdn.shopify.com	Other	51ms	21 KB	—	€0/mo	Optional

cdn.shopify.com

Other

Costly

Execution 4082ms

Transfer 22 KB

Monthly Cost €22/mo

cdn.shopify.com

Other

Costly

Execution 1184ms

Transfer 76 KB

Unused 39%

Monthly Cost €6/mo

cdn.shopify.com

Other

Costly

Execution 859ms

Transfer 108 KB

Unused 69%

Monthly Cost €5/mo

Microsoft Clarity

Session Replay

Costly

Execution 745ms

Transfer 26 KB

Monthly Cost €4/mo

Google Tag Manager

Tag Manager

Costly

Execution 504ms

Transfer 165 KB

Unused 38%

Monthly Cost €3/mo

triplewhale-pixel.web.app

Other

Costly

Execution 294ms

Transfer 49 KB

Unused 57%

Monthly Cost €2/mo

cdn.shopify.com

Other

Costly

Execution 289ms

Transfer 93 KB

Unused 50%

Monthly Cost €2/mo

triplewhale-pixel.web.app

Other

Costly

Execution 241ms

Transfer 49 KB

Unused 61%

Monthly Cost €1/mo

static.klaviyo.com

Other

Costly

Execution 232ms

Transfer 8 KB

Monthly Cost €1/mo

cdn.shopify.com

Other

Costly

Execution 224ms

Transfer 62 KB

Unused 71%

Monthly Cost €1/mo

cdn.shopify.com

Other

Costly

Execution 222ms

Transfer 15 KB

Monthly Cost €1/mo

cdn.accessibly.app

Other

Costly

Execution 206ms

Transfer 41 KB

Monthly Cost €1/mo

cdn.shopify.com

Other

Optional

Execution 198ms

Transfer 41 KB

Unused 69%

Monthly Cost €1/mo

cdn.shopify.com

Other

Optional

Execution 149ms

Transfer 4 KB

Monthly Cost €1/mo

api.livechatinc.com

Other

Optional

Execution 139ms

Transfer 1 KB

Monthly Cost €1/mo

cdn.506.io

Other

Optional

Execution 129ms

Transfer 105 KB

Unused 83%

Monthly Cost €1/mo

static.klaviyo.com

Other

Optional

Execution 116ms

Transfer 21 KB

Monthly Cost €1/mo

cdn.accessibly.app

Other

Optional

Execution 111ms

Transfer 0 KB

Monthly Cost €1/mo

cdn.shopify.com

Other

Optional

Execution 94ms

Transfer 4 KB

Monthly Cost €0/mo

LiveChat

Chat

Optional

Execution 77ms

Transfer 35 KB

Unused 82%

Monthly Cost €0/mo

api.livechatinc.com

Other

Optional

Execution 75ms

Transfer 0 KB

Monthly Cost €0/mo

cdn.shopify.com

Other

Optional

Execution 74ms

Transfer 14 KB

Monthly Cost €0/mo

static.klaviyo.com

Other

Optional

Execution 62ms

Transfer 26 KB

Monthly Cost €0/mo

cdn.shopify.com

Other

Optional

Execution 60ms

Transfer 28 KB

Monthly Cost €0/mo

static.klaviyo.com

Other

Optional

Execution 53ms

Transfer 3 KB

Monthly Cost €0/mo

cdn.shopify.com

Other

Optional

Execution 53ms

Transfer 18 KB

Monthly Cost €0/mo

cdn.shopify.com

Other

Optional

Execution 51ms

Transfer 21 KB

Monthly Cost €0/mo

These scripts may cost more than they're worth

cdn.shopify.com adds 4082ms and costs ~€22/month
cdn.shopify.com adds 1184ms and costs ~€6/month
cdn.shopify.com adds 859ms and costs ~€5/month
Microsoft Clarity adds 745ms and costs ~€4/month
Google Tag Manager adds 504ms and costs ~€3/month
triplewhale-pixel.web.app adds 294ms and costs ~€2/month
cdn.shopify.com adds 289ms and costs ~€2/month
triplewhale-pixel.web.app adds 241ms and costs ~€1/month
static.klaviyo.com adds 232ms and costs ~€1/month
cdn.shopify.com adds 224ms and costs ~€1/month
cdn.shopify.com adds 222ms and costs ~€1/month
cdn.accessibly.app adds 206ms and costs ~€1/month

46% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

cdn.shopify.com takes 4082ms 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 1184ms 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 859ms 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

69% 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

Microsoft Clarity takes 745ms 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 504ms 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

triplewhale-pixel.web.app takes 294ms 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

57% of triplewhale-pixel.web.app'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

cdn.shopify.com takes 289ms 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

50% 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

triplewhale-pixel.web.app takes 241ms 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

61% of triplewhale-pixel.web.app'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

static.klaviyo.com takes 232ms 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 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

71% 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

cdn.shopify.com takes 222ms 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.accessibly.app takes 206ms 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

69% 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

83% of cdn.506.io'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

82% of LiveChat'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)

2008 ms

84% good

INP (p75)

133 ms

89% good

CLS (p75)

0.000

98% good

FCP (p75)

1077 ms

TTFB (p75)

522 ms

This origin passes Core Web Vitals assessment

Image Optimization

88 images, 263 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

263 KB

Oversized

18 missing dimensions 6 missing lazy loading

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