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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
67
GRADE
D
FIX
5
REVIEW
2
PASS
5
INFO
2

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

Mobile Desktop
6
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
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.
85
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.

6.12 s

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

7.46 s

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

5.45 s

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

0.476

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

15.34 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.

22.73 s

Page Load Progression

5.3 s
10.6 s
15.9 s
21.2 s
26.5 s
31.8 s
37.1 s
42.4 s
Checks
14
5 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
3.0 MB transferred, 150 requests
FIX
3.0 MB transferred, 150 requests
Warning::
Page weighs 8.7 MB (3.0 MB transferred)
Warning::
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
Warning::
150 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.63 g CO2 per page load
3.0 MB / 2.4 MB budget
3.0 MB transferred
150 requests
0.63 g CO2 per page load
JavaScript 1.7 MiB 57%
Images 742.3 KiB 24%
Fonts 166.0 KiB 5%
CSS 151.5 KiB 5%
Other 148.1 KiB 5%
Other 56.1 KiB 2%
HTML 53.0 KiB 2%
Other 16.4 KiB 1%
Other 571 B 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

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (3.0 MiB of 3.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
32053ms total JS execution
FIX
32053ms total JS execution
Warning::
https://eu.patagonia.com/on/demandware.static/Site...: 11941ms CPU time
Warning::
https://eu.patagonia.com/gb/en/home/: 4557ms CPU time
Warning::
https://rapid-cdn.yottaa.com/rapid/lib/WxitjJbVt8B...: 3176ms CPU time
Warning::
Unattributable: 2619ms CPU time
Warning::
https://eu.patagonia.com/on/demandware.static/Site...: 1175ms CPU time
Warning::
Third-party scripts: 32053ms (100% of total)

Main Thread Breakdown

Script Evaluation 42% Other 33% Style & Layout 15% Rendering 4% Script Parsing & Compilation 3%
ScriptTotalScriptingParse/CompileParty
https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/en_GB/v1775066992435/js/main-modern.js11941ms2663ms5ms3rd
https://eu.patagonia.com/gb/en/home/4557ms57ms37ms3rd
https://rapid-cdn.yottaa.com/rapid/lib/WxitjJbVt8BvmQ.js3176ms2972ms39ms3rd
Unattributable2619ms39ms0ms3rd
https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/en_GB/v1775066992435/js/chunks/main-3821.4d99ee9dccd452128caf-modern.js1175ms716ms15ms3rd
https://matterhorn.eu.patagonia.com/gtm.js?id=GTM-PWM6SX321140ms914ms116ms3rd
https://cdn.cookielaw.org/scripttemplates/202503.2.0/otBannerSdk.js974ms795ms88ms3rd
https://cdn.cquotient.com/js/v2/gretel.min.js909ms806ms14ms3rd
https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/en_GB/v1775066992435/js/chunks/main-core-modern.js564ms550ms4ms3rd
https://static.klaviyo.com/onsite/js/build-preview/commit-f6f00cac0c842ff6b918911ae9159db809c1b007/1011.fa12d00c7a08724d2839.js559ms509ms8ms3rd

Showing top 10 of 26 scripts

F
JS Bundles
Action
63 scripts, 663 KB unused
FIX
63 scripts, 663 KB unused
Warning::
https://eu.patagonia.com/on/demandware.static/Site...: 110 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://eu.patagonia.com/on/demandware.static/Site...: 70 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-100...: 63 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://matterhorn.eu.patagonia.com/gtag/js?id=G-7...: 63 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=DC-973...: 62 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 663 KB
663 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/en_GB/v1775066992435/js/main-modern.js177 KB110 KB (62%)✓3rd
https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/en_GB/v1775066992435/js/chunks/main-core-modern.js119 KB70 KB (59%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-1001361803&cx=c&gtm=4e6411&sign=e36cee5a8345017b180c5ab5ac07484ba00b84abad35335f8c94d5bc18584626_20260404142 KB63 KB (45%)✓3rd
https://matterhorn.eu.patagonia.com/gtag/js?id=G-7BM4Z0QBKP&cx=c&gtm=4e6411&sign=e36cee5a8345017b180c5ab5ac07484ba00b84abad35335f8c94d5bc18584626_20260404173 KB63 KB (37%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-9730640&cx=c&gtm=4e6411&sign=e36cee5a8345017b180c5ab5ac07484ba00b84abad35335f8c94d5bc18584626_20260404125 KB62 KB (50%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202503.2.0/otBannerSdk.js117 KB62 KB (53%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-9547369&cx=c&gtm=4e6411&sign=e36cee5a8345017b180c5ab5ac07484ba00b84abad35335f8c94d5bc18584626_20260404130 KB60 KB (46%)✓3rd
https://matterhorn.eu.patagonia.com/gtm.js?id=GTM-PWM6SX32182 KB58 KB (32%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-427880931&cx=c&gtm=4e6411&sign=e36cee5a8345017b180c5ab5ac07484ba00b84abad35335f8c94d5bc18584626_20260404147 KB54 KB (37%)✓3rd
https://static-tracking.klaviyo.com/onsite/js/build-preview/commit-f6f00cac0c842ff6b918911ae9159db809c1b007/Render.12bfc6d3a0a9b939b8c4.js52 KB37 KB (71%)✓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

D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: max-age=0, no-cache, no-store
Info::
ETag present — enables conditional (304) responses
Cache-Control

max-age=0, no-cache, no-store

DirectiveValueMeaning
max-age0Cache for 0 seconds
no-cache—Cache but always revalidate first
no-store—Never cache this response
C
Image Optimization
Action
31 images, 0 KB saveable
REVIEW
31 images, 0 KB saveable
Warning::
https://eu.patagonia.com/on/demandware.static/Site... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://eu.patagonia.com/on/demandware.static/-/Li... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://eu.patagonia.com/on/demandware.static/Site... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://eu.patagonia.com/on/demandware.static/-/Li... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
31 images 742 KB
0 oversized -0 KB
26 legacy format
4 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

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

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

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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
7 fonts (166 KB)
PASS
7 fonts (166 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

166 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 6.1 s LCP 7.5 shttps://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dwf7519470/fonts/RidgewaySans/RidgewaySans.woff2RidgewaySans.woff2 https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dwf7519470/fonts/RidgewaySans/RidgewaySans.woff2 — 163.9 KiB — 0 ms — font-display: swaphttps://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw364e6578/fonts/7195d5d0-582f-42d4-86ca-9da8dc31146e.woff27195d5d0-582f-42d4-86ca... https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw364e6578/fonts/7195d5d0-582f-42d4-86ca-9da8dc31146e.woff2 — 360 B — 0 ms — font-display: swaphttps://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw7532db56/fonts/b729a5ee-0221-40db-9a76-7b9e9b747f65.woff2b729a5ee-0221-40db-9a76... https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw7532db56/fonts/b729a5ee-0221-40db-9a76-7b9e9b747f65.woff2 — 361 B — 0 ms — font-display: swaphttps://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw364e6578/fonts/7195d5d0-582f-42d4-86ca-9da8dc31146e.woff27195d5d0-582f-42d4-86ca... https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw364e6578/fonts/7195d5d0-582f-42d4-86ca-9da8dc31146e.woff2 — 360 B — 0 ms — font-display: swaphttps://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw364e6578/fonts/7195d5d0-582f-42d4-86ca-9da8dc31146e.woff27195d5d0-582f-42d4-86ca... https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw364e6578/fonts/7195d5d0-582f-42d4-86ca-9da8dc31146e.woff2 — 360 B — 0 ms — font-display: swaphttps://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw7532db56/fonts/b729a5ee-0221-40db-9a76-7b9e9b747f65.woff2b729a5ee-0221-40db-9a76... https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw7532db56/fonts/b729a5ee-0221-40db-9a76-7b9e9b747f65.woff2 — 361 B — 0 ms — font-display: swaphttps://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw7532db56/fonts/b729a5ee-0221-40db-9a76-7b9e9b747f65.woff2b729a5ee-0221-40db-9a76... https://eu.patagonia.com/on/demandware.static/Sites-patagonia-eu-Site/-/default/dw7532db56/fonts/b729a5ee-0221-40db-9a76-7b9e9b747f65.woff2 — 361 B — 0 ms — font-display: swap
RidgewaySans.woff2 woff2 swap
Size 164 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
7195d5d0-582f-42d4-86ca... woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
b729a5ee-0221-40db-9a76... woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
7195d5d0-582f-42d4-86ca... woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
7195d5d0-582f-42d4-86ca... woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
b729a5ee-0221-40db-9a76... woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
b729a5ee-0221-40db-9a76... woff2 swap
Size 0 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)

Fixing the unchecked items could save ~82 KB and ~164 ms

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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
150 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
100% of JavaScript execution is third-party
First-party Third-party 32053ms · 1666KB · $425/mo
eu.patagonia.com
Other
Costly
Execution 11941ms
Transfer 177 KB
Unused 62%
Monthly Cost $159/mo
eu.patagonia.com
Other
Costly
Execution 4557ms
Transfer 53 KB
Monthly Cost $60/mo
rapid-cdn.yottaa.com
Other
Costly
Execution 3176ms
Transfer 45 KB
Unused 58%
Monthly Cost $42/mo
Unattributable
Other
Costly
Execution 2619ms
Transfer 0 KB
Monthly Cost $35/mo
eu.patagonia.com
Other
Costly
Execution 1175ms
Transfer 24 KB
Monthly Cost $16/mo
matterhorn.eu.patagonia.com
Other
Costly
Execution 1140ms
Transfer 182 KB
Unused 32%
Monthly Cost $15/mo
OneTrust
Consent
Essential
Execution 974ms
Transfer 117 KB
Unused 53%
Monthly Cost $13/mo
cdn.cquotient.com
Other
Costly
Execution 909ms
Transfer 21 KB
Monthly Cost $12/mo
eu.patagonia.com
Other
Costly
Execution 564ms
Transfer 119 KB
Unused 59%
Monthly Cost $7/mo
static.klaviyo.com
Other
Costly
Execution 559ms
Transfer 8 KB
Monthly Cost $7/mo
eu.patagonia.com
Other
Costly
Execution 556ms
Transfer 15 KB
Monthly Cost $7/mo
Google Tag Manager
Tag Manager
Costly
Execution 553ms
Transfer 147 KB
Unused 37%
Monthly Cost $7/mo
try.abtasty.com
Other
Costly
Execution 486ms
Transfer 52 KB
Monthly Cost $6/mo
matterhorn.eu.patagonia.com
Other
Costly
Execution 429ms
Transfer 173 KB
Unused 37%
Monthly Cost $6/mo
Google Tag Manager
Tag Manager
Costly
Execution 410ms
Transfer 142 KB
Unused 45%
Monthly Cost $5/mo
static.klaviyo.com
Other
Costly
Execution 365ms
Transfer 23 KB
Monthly Cost $5/mo
static.klaviyo.com
Other
Costly
Execution 327ms
Transfer 10 KB
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 279ms
Transfer 130 KB
Unused 46%
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 267ms
Transfer 125 KB
Unused 50%
Monthly Cost $4/mo
try.abtasty.com
Other
Costly
Execution 228ms
Transfer 8 KB
Monthly Cost $3/mo
static-tracking.klaviyo.com
Other
Costly
Execution 222ms
Transfer 52 KB
Unused 71%
Monthly Cost $3/mo
static-tracking.klaviyo.com
Other
Optional
Execution 76ms
Transfer 3 KB
Monthly Cost $1/mo
static.cloudflareinsights.com
Other
Optional
Execution 75ms
Transfer 7 KB
Monthly Cost $1/mo
OneTrust
Consent
Essential
Execution 65ms
Transfer 9 KB
Monthly Cost $1/mo
static-tracking.klaviyo.com
Other
Optional
Execution 51ms
Transfer 14 KB
Monthly Cost $1/mo
eu.patagonia.com
Other
Optional
Execution 51ms
Transfer 8 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • eu.patagonia.com adds 11941ms and costs ~$159/month
  • eu.patagonia.com adds 4557ms and costs ~$60/month
  • rapid-cdn.yottaa.com adds 3176ms and costs ~$42/month
  • Unattributable adds 2619ms and costs ~$35/month
  • eu.patagonia.com adds 1175ms and costs ~$16/month
  • matterhorn.eu.patagonia.com adds 1140ms and costs ~$15/month
  • cdn.cquotient.com adds 909ms and costs ~$12/month
  • eu.patagonia.com adds 564ms and costs ~$7/month
  • static.klaviyo.com adds 559ms and costs ~$7/month
  • eu.patagonia.com adds 556ms and costs ~$7/month
  • Google Tag Manager adds 553ms and costs ~$7/month
  • try.abtasty.com adds 486ms and costs ~$6/month
  • matterhorn.eu.patagonia.com adds 429ms and costs ~$6/month
  • Google Tag Manager adds 410ms and costs ~$5/month
  • static.klaviyo.com adds 365ms and costs ~$5/month
  • static.klaviyo.com adds 327ms and costs ~$4/month
  • Google Tag Manager adds 279ms and costs ~$4/month
  • Google Tag Manager adds 267ms and costs ~$4/month
  • try.abtasty.com adds 228ms and costs ~$3/month
  • static-tracking.klaviyo.com adds 222ms and costs ~$3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

eu.patagonia.com takes 11941ms 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

62% of eu.patagonia.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

eu.patagonia.com takes 4557ms 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

rapid-cdn.yottaa.com takes 3176ms 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

58% of rapid-cdn.yottaa.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

Unattributable takes 2619ms 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

eu.patagonia.com takes 1175ms 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

matterhorn.eu.patagonia.com takes 1140ms 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

53% of OneTrust'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.cquotient.com takes 909ms 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

eu.patagonia.com takes 564ms 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

59% of eu.patagonia.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 559ms 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

eu.patagonia.com takes 556ms 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 553ms 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

try.abtasty.com takes 486ms 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

matterhorn.eu.patagonia.com takes 429ms 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 410ms 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 365ms 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 327ms 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 279ms 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 267ms 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

try.abtasty.com takes 228ms 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-tracking.klaviyo.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

71% 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

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

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