Skip to content
https://jeffreestarcosmetics.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
74
GRADE
C
FIX
4
REVIEW
1
PASS
9
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
36
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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

1.36 s

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

27.89 s

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

2.38 s

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

0.048

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

11.70 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.

35.81 s

Page Load Progression

1.2 s
2.4 s
3.5 s
4.7 s
5.9 s
7.1 s
8.3 s
9.4 s
Checks
16
9 PASS 1 REVIEW 4 FIX
F
Page Weight Budget
Action
6.3 MB transferred, 376 requests
FIX
6.3 MB transferred, 376 requests
Critical::
Page weighs 12.8 MB (6.3 MB transferred)
Warning::
JavaScript is 2.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.4 MB
Warning::
Images are 2.2 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.2 MB
Info::
Fonts are 247 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 247 KB
Warning::
376 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.3 g CO2 per page load
6.3 MB / 2.4 MB budget
6.3 MB transferred
376 requests
1.3 g CO2 per page load
JavaScript 2.4 MiB 37%
Images 2.2 MiB 35%
Other 1.2 MiB 18%
Fonts 246.7 KiB 4%
HTML 153.2 KiB 2%
CSS 126.6 KiB 2%
Other 31.9 KiB 0%
Other 11.3 KiB 0%
Other 8.8 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

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

Why this matters

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

Source: web.dev

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

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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

Why this matters

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

Source: web.dev font loading

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

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

F
JS Execution Cost
Action
20627ms total JS execution
FIX
20627ms total JS execution
Warning::
https://jeffreestarcosmetics.com/: 10906ms CPU time
Warning::
Unattributable: 3077ms CPU time
Warning::
https://jeffreestarcosmetics.com/cdn/wpm/b0e8c7c7a...: 1054ms CPU time
Warning::
https://assets.gorgias.chat/build/static/js/279.6b...: 416ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-81RX...: 322ms CPU time
Info::
Third-party scripts: 7446ms (36% of total)

Main Thread Breakdown

Other 39% Script Evaluation 26% Style & Layout 19% Rendering 9% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
https://jeffreestarcosmetics.com/10906ms201ms15ms1st
Unattributable3077ms102ms0ms3rd
https://jeffreestarcosmetics.com/cdn/wpm/b0e8c7c7aw41bd75a1p837d7fd4m8b145375m.js1054ms675ms21ms1st
https://assets.gorgias.chat/build/static/js/279.6ba6eb825556cdb4.js416ms380ms30ms3rd
https://www.googletagmanager.com/gtag/js?id=G-81RXDPTBJQ322ms246ms73ms3rd
https://static.klaviyo.com/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc073a286a0296d9f7/vendors~in_app_forms~signup_forms~reviews~atlas.0201e888d834a3782e3a.js?cb=2320ms157ms3ms3rd
https://cdn-swell-assets.yotpo.com/app.v1.0.368.js307ms106ms186ms3rd
https://jeffreestarcosmetics.com/cdn/shopifycloud/storefront/assets/shop_events_listener-3da45d37.js297ms245ms1ms1st
https://static.klaviyo.com/onsite/js/1011.fa12d00c7a08724d2839.js262ms222ms2ms3rd
https://jeffreestarcosmetics.com/cdn/shop/t/245/assets/app.min.js?v=133357266328410620261769777168259ms84ms0ms1st

Showing top 10 of 35 scripts

F
JS Bundles
Action
163 scripts, 970 KB unused
FIX
163 scripts, 970 KB unused
Warning::
https://cdn.rebuyengine.com/onsite/js/global.js?bu...: 166 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn-swell-assets.yotpo.com/app.v1.0.368.js: 164 KB unused (86%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://dawtemplatesmaster.com/_shopify_app_ressou...: 78 KB unused (88%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://dawtemplatesmaster.com/_shopify_app_ressou...: unminified — 46 KB could be saved
Warning::
https://www.googletagmanager.com/gtag/destination?...: 65 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-81RX...: 63 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 970 KB
970 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.rebuyengine.com/onsite/js/global.js?build=1775594982221 KB166 KB (75%)✓3rd
https://cdn-swell-assets.yotpo.com/app.v1.0.368.js192 KB164 KB (86%)✓3rd
https://dawtemplatesmaster.com/_shopify_app_ressources/osaria_sap_v2/mediaelement-osaria.js?shop=jeffree-star-cosmetics.myshopify.com90 KB78 KB (88%)✗3rd
https://www.googletagmanager.com/gtag/destination?id=MC-0MGTFZ50PE&cx=c&gtm=4e6470h2136 KB65 KB (48%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-81RXDPTBJQ164 KB63 KB (38%)✓3rd
https://www.googletagmanager.com/gtag/destination?id=AW-325015524&cx=c&gtm=4e6470h2144 KB58 KB (41%)✓3rd
https://cdn.506.io/eg/script.js?shop=jeffree-star-cosmetics.myshopify.com&v=978 KB57 KB (74%)✓3rd
https://gdprcdn.b-cdn.net/js/components.consentmo.js50 KB45 KB (93%)✓3rd
https://assets.gorgias.chat/build/static/js/279.6ba6eb825556cdb4.js93 KB41 KB (45%)✓3rd
https://static-tracking.klaviyo.com/onsite/js/build-preview/commit-98747c9b1816a2f78e748cdc073a286a0296d9f7/Render.f778b94f6021eec68929.js52 KB35 KB (69%)✓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

F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses

No Cache-Control header

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

B
Third-Party Impact
42% third-party, 0 ms blocking
REVIEW
42% third-party, 0 ms blocking
Info::
Third-party code accounts for 42% of page weight (2.7 MiB of 6.3 MiB)
Info::
Third-party blocking time is low (0 ms)
58%
42%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A
Image Optimization
97 images, 0 KB saveable
PASS
97 images, 0 KB saveable
Info::
All images are well-optimized
97 images 2.2 MB
0 oversized -0 KB
2 legacy format
0 missing dimensions CLS risk
A+
Font Loading
12 fonts (247 KB)
PASS
12 fonts (247 KB)
Info::
12 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

12

247 KB total

Render-blocking

0

of 12

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s FCP 1.4 s LCP 27.9 shttps://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-nohemi-regular.woff2?v=110191566278659115261719510354font-nohemi-regular.woff2 https://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-nohemi-regular.woff2?v=110191566278659115261719510354 — 21.8 KiB — 0 ms — font-display: swaphttps://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-nohemi-medium.woff2?v=152191782221796558911719510354font-nohemi-medium.woff2 https://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-nohemi-medium.woff2?v=152191782221796558911719510354 — 22.4 KiB — 0 ms — font-display: swaphttps://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-din-condensed-light.woff2?v=85322731573101176081719510354font-din-condensed-ligh... https://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-din-condensed-light.woff2?v=85322731573101176081719510354 — 10.4 KiB — 0 ms — font-display: swaphttps://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-gt-alpina-fine-condensed-light.woff2?v=19042904983340866491719510355font-gt-alpina-fine-con... https://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-gt-alpina-fine-condensed-light.woff2?v=19042904983340866491719510355 — 12.7 KiB — 0 ms — font-display: swaphttps://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-nohemi-light.woff2?v=86175879362497025441719510355font-nohemi-light.woff2 https://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-nohemi-light.woff2?v=86175879362497025441719510355 — 22.8 KiB — 0 ms — font-display: swaphttps://cdn.shopify.com/shop-assets/static_uploads/shoplift/GTStandard-MRegular.woff2GTStandard-MRegular.woff2 https://cdn.shopify.com/shop-assets/static_uploads/shoplift/GTStandard-MRegular.woff2 — 63.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 47.3 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 0 B — 0 ms — font-display: swaphttps://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-nohemi-bold.woff2?v=75447495459913113161719510355font-nohemi-bold.woff2 https://jeffreestarcosmetics.com/cdn/shop/t/245/assets/font-nohemi-bold.woff2?v=75447495459913113161719510355 — 22.3 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2pxiEyp8kv8JHgFVrJJfecnF... https://fonts.gstatic.com/s/poppins/v24/pxiEyp8kv8JHgFVrJJfecnFHGPc.woff2 — 7.7 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/bebasneue/v16/JTUSjIg69CK48gW7PXoo9WlhyyTh89Y.woff2JTUSjIg69CK48gW7PXoo9Wl... https://fonts.gstatic.com/s/bebasneue/v16/JTUSjIg69CK48gW7PXoo9WlhyyTh89Y.woff2 — 8.4 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2pxiByp8kv8JHgFVrLCz7Z1x... https://fonts.gstatic.com/s/poppins/v24/pxiByp8kv8JHgFVrLCz7Z1xlFd2JQEk.woff2 — 7.7 KiB — 0 ms — font-display: swap
font-nohemi-regular.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
font-nohemi-medium.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
font-din-condensed-ligh... woff2 swap
Size 10 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
font-gt-alpina-fine-con... woff2 swap
Size 13 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
font-nohemi-light.woff2 woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
GTStandard-MRegular.woff2 woff2 swap
Size 63 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
font-nohemi-bold.woff2 woff2 swap
Size 22 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
pxiEyp8kv8JHgFVrJJfecnF... woff2 swap
Size 8 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
JTUSjIg69CK48gW7PXoo9Wl... woff2 swap
Size 8 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLCz7Z1x... woff2 swap
Size 8 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
1
preload
—
dns-prefetch
1
prefetch
—

2 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
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
376 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
36% of JavaScript execution is third-party
First-party Third-party 7446ms · 1598KB · €39/mo
Unattributable
Other
Costly
Execution 3077ms
Transfer 0 KB
Monthly Cost €16/mo
assets.gorgias.chat
Other
Costly
Execution 416ms
Transfer 93 KB
Unused 45%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 322ms
Transfer 164 KB
Unused 38%
Monthly Cost €2/mo
static.klaviyo.com
Other
Costly
Execution 320ms
Transfer 11 KB
Monthly Cost €2/mo
cdn-swell-assets.yotpo.com
Other
Costly
Execution 307ms
Transfer 192 KB
Unused 86%
Monthly Cost €2/mo
static.klaviyo.com
Other
Costly
Execution 262ms
Transfer 8 KB
Monthly Cost €1/mo
cdn.rebuyengine.com
Other
Costly
Execution 241ms
Transfer 221 KB
Unused 75%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Costly
Execution 234ms
Transfer 136 KB
Unused 48%
Monthly Cost €1/mo
assets.gorgias.chat
Other
Costly
Execution 225ms
Transfer 18 KB
Monthly Cost €1/mo
assets.gorgias.chat
Other
Costly
Execution 215ms
Transfer 4 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Costly
Execution 202ms
Transfer 144 KB
Unused 41%
Monthly Cost €1/mo
gdprcdn.b-cdn.net
Other
Optional
Execution 194ms
Transfer 65 KB
Unused 54%
Monthly Cost €1/mo
dawtemplatesmaster.com
Other
Optional
Execution 164ms
Transfer 90 KB
Unused 88%
Monthly Cost €1/mo
static.klaviyo.com
Other
Optional
Execution 157ms
Transfer 10 KB
Monthly Cost €1/mo
Facebook Pixel
Advertising
Optional
Execution 140ms
Transfer 95 KB
Unused 34%
Monthly Cost €1/mo
assets.gorgias.chat
Other
Optional
Execution 119ms
Transfer 43 KB
Monthly Cost €1/mo
d18eg7dreypte5.cloudfront.net
Other
Optional
Execution 118ms
Transfer 5 KB
Monthly Cost €1/mo
static-tracking.klaviyo.com
Other
Optional
Execution 114ms
Transfer 52 KB
Unused 69%
Monthly Cost €1/mo
Facebook Pixel
Advertising
Optional
Execution 114ms
Transfer 39 KB
Monthly Cost €1/mo
ga.jspm.io
Other
Optional
Execution 92ms
Transfer 12 KB
Monthly Cost €0/mo
cdn.506.io
Other
Optional
Execution 88ms
Transfer 78 KB
Unused 74%
Monthly Cost €0/mo
cdn.rebuyengine.com
Other
Optional
Execution 84ms
Transfer 1 KB
Monthly Cost €0/mo
media.9gtb.com
Other
Optional
Execution 65ms
Transfer 60 KB
Unused 54%
Monthly Cost €0/mo
cdn.rebuyengine.com
Other
Optional
Execution 62ms
Transfer 32 KB
Unused 71%
Monthly Cost €0/mo
config.gorgias.chat
Other
Optional
Execution 61ms
Transfer 13 KB
Monthly Cost €0/mo
cdn-widgetsrepository.yotpo.com
Other
Optional
Execution 54ms
Transfer 11 KB
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • Unattributable adds 3077ms and costs ~€16/month
  • assets.gorgias.chat adds 416ms and costs ~€2/month
  • Google Tag Manager adds 322ms and costs ~€2/month
  • static.klaviyo.com adds 320ms and costs ~€2/month
  • cdn-swell-assets.yotpo.com adds 307ms and costs ~€2/month
  • static.klaviyo.com adds 262ms and costs ~€1/month
  • cdn.rebuyengine.com adds 241ms and costs ~€1/month
  • Google Tag Manager adds 234ms and costs ~€1/month
  • assets.gorgias.chat adds 225ms and costs ~€1/month
  • assets.gorgias.chat adds 215ms and costs ~€1/month
  • Google Tag Manager adds 202ms and costs ~€1/month

Unattributable takes 3077ms 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

assets.gorgias.chat takes 416ms 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 322ms 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 320ms 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-swell-assets.yotpo.com takes 307ms 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

86% 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

static.klaviyo.com takes 262ms 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.rebuyengine.com 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

75% of cdn.rebuyengine.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 234ms 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

assets.gorgias.chat takes 225ms 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

assets.gorgias.chat takes 215ms 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 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

54% of gdprcdn.b-cdn.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

88% of dawtemplatesmaster.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

69% of static-tracking.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

74% 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

54% of media.9gtb.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 cdn.rebuyengine.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

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

Send Feedback