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.

2.70 s

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

4.49 s

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

6.53 s

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

0.002

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

8.80 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.

46.62 s

Page Load Progression

521 ms

1.0 s

1.6 s

2.1 s

2.6 s

3.1 s

3.6 s

4.2 s

Checks

12 PASS 7 REVIEW 5 FIX

Page Weight Budget

Action

6.9 MB transferred, 670 requests

FIX

6.9 MB transferred, 670 requests

Page weighs 20.2 MB (6.9 MB transferred)

JavaScript is 3.9 MB — consider code splitting or lazy loading

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

Got: 3.9 MB

670 HTTP requests — consider bundling or reducing

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

Estimated 1.4 g CO2 per page load

6.9 MB transferred

670 requests

1.4 g CO2 per page load

JavaScript 3.9 MiB 57%

Other 1.3 MiB 20%

Images 684.3 KiB 10%

HTML 672.3 KiB 10%

Fonts 123.5 KiB 2%

Other 62.6 KiB 1%

CSS 44.3 KiB 1%

Other 22.4 KiB 0%

Other 13.9 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

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

25818ms total JS execution

FIX

25818ms total JS execution

https://imgs.signifyd.com/rnifmwt0moq7ojmb.js?xzdl...: 4418ms CPU time

Unattributable: 3954ms CPU time

https://tnuck.com/: 2922ms CPU time

https://tnuck.com/cdn/wpm/b05c62d7ewbe538af9pdeb4f...: 2302ms CPU time

https://cdn.shopify.com/extensions/01a15269-2ff3-7...: 1004ms CPU time

Third-party scripts: 14851ms (58% of total)

Main Thread Breakdown

Script Evaluation 64% Other 21% Script Parsing & Compilation 6% Style & Layout 5%

Script	Total	Scripting	Parse/Compile	Party
https://imgs.signifyd.com/rnifmwt0moq7ojmb.js?xzdl7dmaki1sxb2y=w2txo5aa&2vbwywtlf0fznsh8=hWNIAKWJoPVEtwp1zIyYlV1X	4418ms	2809ms	67ms	3rd
Unattributable	3954ms	940ms	0ms	1st
https://tnuck.com/	2922ms	994ms	98ms	1st
https://tnuck.com/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js	2302ms	2033ms	34ms	1st
https://cdn.shopify.com/extensions/01a15269-2ff3-767b-9fc5-048eadddfcc0/rivo-loyalty-rewards-referrals-828/assets/ba_rivo_profile.js	1004ms	792ms	36ms	3rd
https://qubaa.tnuck.com/load	695ms	504ms	105ms	3rd
https://cdn-scripts.signifyd.com/o/lite.js?sessionId=hWNIAKWJoPVEtwp1zIyYlV1X&ping=false&profile=true&pageURL=https%253A%252F%252Ftnuck.com%252F	679ms	516ms	10ms	3rd
https://polaris.truevaultcdn.com/static/pc/XJMVRGTK3/polaris.js	645ms	386ms	43ms	3rd
https://wd.tnuck.com/assets/smart-tag/versioned/main-v2_e37d43f434c38abf3bd2c5338eac788b.br.js	582ms	516ms	56ms	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5DF2GBV	581ms	486ms	61ms	3rd

Showing top 10 of 54 scripts

JS Bundles

Action

402 scripts, 1.3 MB unused

FIX

402 scripts, 1.3 MB unused

https://cdn.jsdelivr.net/npm/hls.js@latest: 167 KB unused (91%)

Consider code splitting or tree shaking to reduce unused code.

https://cdn-swell-assets.yotpo.com/app.v1.0.368.js: 154 KB unused (81%)

Consider code splitting or tree shaking to reduce unused code.

https://wd.tnuck.com/assets/smart-tag/versioned/ma...: 100 KB unused (65%)

Consider code splitting or tree shaking to reduce unused code.

https://cnstrc.com/js/cust/tuckernuck_NV4yw2.js: 83 KB unused (75%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=G-S6NM...: 73 KB unused (39%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 1.3 MB

1295 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://cdn.jsdelivr.net/npm/hls.js@latest	185 KB	167 KB (91%)	✓	3rd
https://cdn-swell-assets.yotpo.com/app.v1.0.368.js	192 KB	154 KB (81%)	✓	3rd
https://wd.tnuck.com/assets/smart-tag/versioned/main-v2_e37d43f434c38abf3bd2c5338eac788b.br.js	154 KB	100 KB (65%)	✓	3rd
https://cnstrc.com/js/cust/tuckernuck_NV4yw2.js	112 KB	83 KB (75%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-S6NMYZF1YE&cx=c&gtm=4e6ag1	186 KB	73 KB (39%)	✓	3rd
https://accounts.google.com/gsi/client	100 KB	72 KB (72%)	✓	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5DF2GBV	182 KB	58 KB (32%)	✓	3rd
https://analytics.tiktok.com/i18n/pixel/static/main.MWFjYmVlZGY0MQ.js	115 KB	55 KB (48%)	✓	3rd
https://tuckernuckpoc.api.useinsider.com/ins.js?id=10015161	118 KB	48 KB (41%)	✓	3rd
https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js	44 KB	42 KB (97%)	✓	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

670 resources · 6.9 MB · 1.3 MB savings available

FIX

670 resources · 6.9 MB · 1.3 MB savings available

Page weight 6.9 MB exceeds 1 MB target by 5.9 MB

Got: 6.9 MB Expected: ≤ 1 MB

~1.3 MB of savings available

362 third-party resources (56% of weight)

670 resources · 6.9 MiB · 362 third-party 5.9 MiB over 1MB target

JavaScript 75% · 5.2 MiB

Image 11% · 740.5 KiB

Document 10% · 679.7 KiB

Font 2% · 139.5 KiB

CSS 2% · 125.6 KiB

Other 1% · 81.8 KiB

~1.3 MiB of savings available

Remove unused JavaScript: 1.3 MiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

670 resources			6.9 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

56% third-party, 0 ms blocking

REVIEW

56% third-party, 0 ms blocking

Third-party code accounts for 56% of page weight (3.8 MiB of 6.9 MiB)

Third-party blocking time is low (0 ms)

44%

56%

First-party Third-party

Image Optimization

25 images, 0 KB saveable

REVIEW

25 images, 0 KB saveable

All images are well-optimized

25 images 684 KB

0 oversized -0 KB

19 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

Action

1 of 6 asset hosts serve text uncompressed

REVIEW

1 of 6 asset hosts serve text uncompressed

cdn.shopify.com serves assets with brotli (assets: 19)

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

static.klaviyo.com serves assets with brotli (assets: 8)

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

cdn-widgetsrepository.yotpo.com serves assets with gzip; brotli would be ~20% smaller (assets: 6)

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: cdn-widgetsrepository.yotpo.com (application/javascript)

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

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

assets.dailykarma.io 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: assets.dailykarma.io (text/javascript)

s.pinimg.com serves assets with brotli (assets: 4)

Got: s.pinimg.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

4 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 25.8 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.

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

9 fonts (140 KB)

PASS

9 fonts (140 KB)

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

Web fonts

140 KB total

Render-blocking

of 9

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

GT-America-Standard-Med... woff2 swap

Size 9 KB

Load time 50 ms

Start 701 ms

Risk FOUT — text flashes from fallback to web font

GT-America-Standard-Reg... woff2 swap

Size 9 KB

Load time 53 ms

Start 701 ms

Risk FOUT — text flashes from fallback to web font

Miller%20Banner%20Light... woff2 swap

Size 33 KB

Load time 49 ms

Start 779 ms

Risk FOUT — text flashes from fallback to web font

Miller%20Banner%20Light... woff2 swap

Size 36 KB

Load time 53 ms

Start 779 ms

Risk FOUT — text flashes from fallback to web font

Teodor-Regular.woff2 woff2 swap

Size 35 KB

Load time 53 ms

Start 781 ms

Risk FOUT — text flashes from fallback to web font

GT-America-Standard-Reg... woff2 swap

Size 1 KB

Load time 145 ms

Start 3.4 s

Risk FOUT — text flashes from fallback to web font

Teodor-Regular.woff2 woff2 swap

Size 1 KB

Load time 46 ms

Start 3.4 s

Risk FOUT — text flashes from fallback to web font

GT-America-Standard-Reg... woff2 swap

Size 8 KB

Load time 21 ms

Start 13.7 s

Risk FOUT — text flashes from fallback to web font

GT-America-Standard-Med... woff2 swap

Size 8 KB

Load time 21 ms

Start 13.7 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

Resource Hints

197 hints, 0 missing preconnects

PASS

197 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://live.visually-io.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://live.visually-io.com (preconnect+dns-prefetch).

Page uses 197 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

prefetch

+177

187

197 resource hints configured

preconnect already does the DNS lookup; adding dns-prefetch to the same origin is at best a no-op. Sample: https://live.visually-io.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://live.visually-io.com (preconnect+dns-prefetch).

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+

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

CSS Performance Depth

1 CSS depth issue(s) detected

PASS

1 CSS depth issue(s) detected

7 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.

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

670 requests over 16028ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

58% of JavaScript execution is third-party

First-party Third-party 14851ms · 2438KB · €79/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
imgs.signifyd.com imgs.signifyd.com	Other	4418ms	131 KB	—	€23/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	1004ms	76 KB	39%	€5/mo	Costly
qubaa.tnuck.com qubaa.tnuck.com	Other	695ms	0 KB	—	€4/mo	Costly
cdn-scripts.signifyd.com cdn-scripts.signifyd.com	Other	679ms	38 KB	—	€4/mo	Costly
polaris.truevaultcdn.com polaris.truevaultcdn.com	Other	645ms	0 KB	—	€3/mo	Costly
wd.tnuck.com wd.tnuck.com	Other	582ms	154 KB	65%	€3/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	581ms	182 KB	32%	€3/mo	Costly
connect.nosto.com connect.nosto.com	Other	467ms	50 KB	55%	€2/mo	Costly
cdn-swell-assets.yotpo.com cdn-swell-assets.yotpo.com	Other	451ms	192 KB	81%	€2/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	445ms	186 KB	39%	€2/mo	Costly
tuckernuckpoc.api.useinsider.com tuckernuckpoc.api.useinsider.com	Other	428ms	118 KB	41%	€2/mo	Costly
analytics.tiktok.com analytics.tiktok.com	Other	401ms	115 KB	48%	€2/mo	Costly
cnstrc.com cnstrc.com	Other	396ms	112 KB	75%	€2/mo	Costly
cdn-scripts.signifyd.com cdn-scripts.signifyd.com	Other	295ms	18 KB	—	€2/mo	Costly
js.adsrvr.org js.adsrvr.org	Other	289ms	0 KB	—	€2/mo	Costly
cdn.shopify.com cdn.shopify.com	Other	276ms	14 KB	—	€1/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	220ms	112 KB	35%	€1/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	213ms	96 KB	34%	€1/mo	Costly
cdn-widgetsrepository.yotpo.com cdn-widgetsrepository.yotpo.com	Other	199ms	43 KB	—	€1/mo	Optional
static.klaviyo.com static.klaviyo.com	Other	190ms	8 KB	—	€1/mo	Optional
dx.mountain.com dx.mountain.com	Other	175ms	11 KB	—	€1/mo	Optional
cdn.gladly.com cdn.gladly.com	Other	172ms	45 KB	69%	€1/mo	Optional
sc-static.net sc-static.net	Other	169ms	25 KB	—	€1/mo	Optional
d-code.liadm.com d-code.liadm.com	Other	159ms	52 KB	—	€1/mo	Optional
s.pinimg.com s.pinimg.com	Other	148ms	38 KB	54%	€1/mo	Optional
assets.visually.io assets.visually.io	Other	135ms	14 KB	—	€1/mo	Optional
static.klaviyo.com static.klaviyo.com	Other	105ms	15 KB	—	€1/mo	Optional
staticw2.yotpo.com staticw2.yotpo.com	Other	95ms	16 KB	—	€0/mo	Optional
jsDelivr cdn.jsdelivr.net	CDN	87ms	185 KB	91%	€0/mo	Optional
str.rise-ai.com str.rise-ai.com	Other	78ms	32 KB	—	€0/mo	Optional
cdn-widgetsrepository.yotpo.com cdn-widgetsrepository.yotpo.com	Other	76ms	16 KB	—	€0/mo	Optional
strn.rise-ai.com strn.rise-ai.com	Other	74ms	55 KB	66%	€0/mo	Optional
wd.tnuck.com wd.tnuck.com	Other	68ms	7 KB	—	€0/mo	Optional
tag.rmp.rakuten.com tag.rmp.rakuten.com	Other	68ms	14 KB	—	€0/mo	Optional
cdn-widgetsrepository.yotpo.com cdn-widgetsrepository.yotpo.com	Other	66ms	13 KB	—	€0/mo	Optional
static.klaviyo.com static.klaviyo.com	Other	63ms	3 KB	—	€0/mo	Optional
assets.dailykarma.io assets.dailykarma.io	Other	62ms	21 KB	—	€0/mo	Optional
wd.tnuck.com wd.tnuck.com	Other	62ms	78 KB	—	€0/mo	Optional
d21m4dsqdd3b9h.cloudfront.net d21m4dsqdd3b9h.cloudfront.net	Other	59ms	53 KB	76%	€0/mo	Optional
accounts.google.com accounts.google.com	Other	56ms	100 KB	72%	€0/mo	Optional

imgs.signifyd.com

Other

Costly

Execution 4418ms

Transfer 131 KB

Monthly Cost €23/mo

cdn.shopify.com

Other

Costly

Execution 1004ms

Transfer 76 KB

Unused 39%

Monthly Cost €5/mo

qubaa.tnuck.com

Other

Costly

Execution 695ms

Transfer 0 KB

Monthly Cost €4/mo

cdn-scripts.signifyd.com

Other

Costly

Execution 679ms

Transfer 38 KB

Monthly Cost €4/mo

polaris.truevaultcdn.com

Other

Costly

Execution 645ms

Transfer 0 KB

Monthly Cost €3/mo

wd.tnuck.com

Other

Costly

Execution 582ms

Transfer 154 KB

Unused 65%

Monthly Cost €3/mo

Google Tag Manager

Tag Manager

Costly

Execution 581ms

Transfer 182 KB

Unused 32%

Monthly Cost €3/mo

connect.nosto.com

Other

Costly

Execution 467ms

Transfer 50 KB

Unused 55%

Monthly Cost €2/mo

cdn-swell-assets.yotpo.com

Other

Costly

Execution 451ms

Transfer 192 KB

Unused 81%

Monthly Cost €2/mo

Google Tag Manager

Tag Manager

Costly

Execution 445ms

Transfer 186 KB

Unused 39%

Monthly Cost €2/mo

tuckernuckpoc.api.useinsider.com

Other

Costly

Execution 428ms

Transfer 118 KB

Unused 41%

Monthly Cost €2/mo

analytics.tiktok.com

Other

Costly

Execution 401ms

Transfer 115 KB

Unused 48%

Monthly Cost €2/mo

cnstrc.com

Other

Costly

Execution 396ms

Transfer 112 KB

Unused 75%

Monthly Cost €2/mo

cdn-scripts.signifyd.com

Other

Costly

Execution 295ms

Transfer 18 KB

Monthly Cost €2/mo

js.adsrvr.org

Other

Costly

Execution 289ms

Transfer 0 KB

Monthly Cost €2/mo

cdn.shopify.com

Other

Costly

Execution 276ms

Transfer 14 KB

Monthly Cost €1/mo

Facebook Pixel

Advertising

Costly

Execution 220ms

Transfer 112 KB

Unused 35%

Monthly Cost €1/mo

Facebook Pixel

Advertising

Costly

Execution 213ms

Transfer 96 KB

Unused 34%

Monthly Cost €1/mo

cdn-widgetsrepository.yotpo.com

Other

Optional

Execution 199ms

Transfer 43 KB

Monthly Cost €1/mo

static.klaviyo.com

Other

Optional

Execution 190ms

Transfer 8 KB

Monthly Cost €1/mo

dx.mountain.com

Other

Optional

Execution 175ms

Transfer 11 KB

Monthly Cost €1/mo

cdn.gladly.com

Other

Optional

Execution 172ms

Transfer 45 KB

Unused 69%

Monthly Cost €1/mo

sc-static.net

Other

Optional

Execution 169ms

Transfer 25 KB

Monthly Cost €1/mo

d-code.liadm.com

Other

Optional

Execution 159ms

Transfer 52 KB

Monthly Cost €1/mo

s.pinimg.com

Other

Optional

Execution 148ms

Transfer 38 KB

Unused 54%

Monthly Cost €1/mo

assets.visually.io

Other

Optional

Execution 135ms

Transfer 14 KB

Monthly Cost €1/mo

static.klaviyo.com

Other

Optional

Execution 105ms

Transfer 15 KB

Monthly Cost €1/mo

staticw2.yotpo.com

Other

Optional

Execution 95ms

Transfer 16 KB

Monthly Cost €0/mo

jsDelivr

CDN

Optional

Execution 87ms

Transfer 185 KB

Unused 91%

Monthly Cost €0/mo

str.rise-ai.com

Other

Optional

Execution 78ms

Transfer 32 KB

Monthly Cost €0/mo

cdn-widgetsrepository.yotpo.com

Other

Optional

Execution 76ms

Transfer 16 KB

Monthly Cost €0/mo

strn.rise-ai.com

Other

Optional

Execution 74ms

Transfer 55 KB

Unused 66%

Monthly Cost €0/mo

wd.tnuck.com

Other

Optional

Execution 68ms

Transfer 7 KB

Monthly Cost €0/mo

tag.rmp.rakuten.com

Other

Optional

Execution 68ms

Transfer 14 KB

Monthly Cost €0/mo

cdn-widgetsrepository.yotpo.com

Other

Optional

Execution 66ms

Transfer 13 KB

Monthly Cost €0/mo

static.klaviyo.com

Other

Optional

Execution 63ms

Transfer 3 KB

Monthly Cost €0/mo

assets.dailykarma.io

Other

Optional

Execution 62ms

Transfer 21 KB

Monthly Cost €0/mo

wd.tnuck.com

Other

Optional

Execution 62ms

Transfer 78 KB

Monthly Cost €0/mo

d21m4dsqdd3b9h.cloudfront.net

Other

Optional

Execution 59ms

Transfer 53 KB

Unused 76%

Monthly Cost €0/mo

accounts.google.com

Other

Optional

Execution 56ms

Transfer 100 KB

Unused 72%

Monthly Cost €0/mo

These scripts may cost more than they're worth

imgs.signifyd.com adds 4418ms and costs ~€23/month
cdn.shopify.com adds 1004ms and costs ~€5/month
qubaa.tnuck.com adds 695ms and costs ~€4/month
cdn-scripts.signifyd.com adds 679ms and costs ~€4/month
polaris.truevaultcdn.com adds 645ms and costs ~€3/month
wd.tnuck.com adds 582ms and costs ~€3/month
Google Tag Manager adds 581ms and costs ~€3/month
connect.nosto.com adds 467ms and costs ~€2/month
cdn-swell-assets.yotpo.com adds 451ms and costs ~€2/month
Google Tag Manager adds 445ms and costs ~€2/month
tuckernuckpoc.api.useinsider.com adds 428ms and costs ~€2/month
analytics.tiktok.com adds 401ms and costs ~€2/month
cnstrc.com adds 396ms and costs ~€2/month
cdn-scripts.signifyd.com adds 295ms and costs ~€2/month
js.adsrvr.org adds 289ms and costs ~€2/month
cdn.shopify.com adds 276ms and costs ~€1/month
Facebook Pixel adds 220ms and costs ~€1/month
Facebook Pixel adds 213ms and costs ~€1/month

58% 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

imgs.signifyd.com takes 4418ms 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 1004ms 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

qubaa.tnuck.com takes 695ms 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-scripts.signifyd.com takes 679ms 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

polaris.truevaultcdn.com takes 645ms 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

wd.tnuck.com takes 582ms 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

65% of wd.tnuck.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 581ms 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

connect.nosto.com takes 467ms 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

55% of connect.nosto.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-swell-assets.yotpo.com takes 451ms 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

81% of cdn-swell-assets.yotpo.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 445ms 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

tuckernuckpoc.api.useinsider.com takes 428ms 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

analytics.tiktok.com takes 401ms 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

cnstrc.com takes 396ms 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

75% of cnstrc.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-scripts.signifyd.com takes 295ms 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

js.adsrvr.org 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

cdn.shopify.com takes 276ms 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 220ms 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 213ms 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.gladly.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

54% of s.pinimg.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

91% of jsDelivr'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

66% of strn.rise-ai.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

76% of d21m4dsqdd3b9h.cloudfront.net'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

72% of accounts.google.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

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)

1487 ms

93% good

INP (p75)

104 ms

91% good

CLS (p75)

0.040

85% good

FCP (p75)

1328 ms

TTFB (p75)

532 ms

This origin passes Core Web Vitals assessment

Image Optimization

88 images, 600 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

600 KB

18 missing alt text 15 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.