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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
3
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
39
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

11.74 s

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

12.87 s

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

679 ms

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

0.001

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

11.74 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.

17.31 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
14
6 PASS 3 REVIEW 3 FIX
D
Page Weight Budget
Action
2.4 MB transferred, 95 requests
FIX
2.4 MB transferred, 95 requests
Info::
Page weighs 10.2 MB (2.4 MB transferred)
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Info::
Fonts are 528 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 528 KB
Info::
CSS is 367 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 367 KB
Info::
95 HTTP requests
Info::
Estimated 0.50 g CO2 per page load
2.4 MB / 2.4 MB budget
2.4 MB transferred
95 requests
0.50 g CO2 per page load
JavaScript 1.4 MiB 58%
Fonts 528.0 KiB 21%
CSS 367.3 KiB 15%
Images 84.2 KiB 3%
HTML 62.9 KiB 3%
Other 1.0 KiB 0%
Other 963 B 0%
Other 26 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

Why this matters

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

Source: web.dev

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

Why this matters

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

Source: web.dev font loading

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

D
Third-Party Impact
Action
96% third-party, 0 ms blocking
FIX
96% third-party, 0 ms blocking
Warning::
Third-party code accounts for 96% of page weight (2.3 MiB of 2.4 MiB)
Info::
Third-party blocking time is low (0 ms)
96%
First-party Third-party
F
JS Execution Cost
Action
4237ms total JS execution
FIX
4237ms total JS execution
Warning::
https://web.dev/: 1059ms CPU time
Warning::
Unattributable: 492ms CPU time
Warning::
https://www.gstatic.com/devrel-devsite/prod/vb4124...: 466ms CPU time
Warning::
https://www.gstatic.com/devrel-devsite/prod/vb4124...: 425ms CPU time
Warning::
https://www.gstatic.com/devrel-devsite/prod/vb4124...: 418ms CPU time
Warning::
Third-party scripts: 3178ms (75% of total)

Main Thread Breakdown

Script Evaluation 43% Other 22% Style & Layout 20% Script Parsing & Compilation 11%
ScriptTotalScriptingParse/CompileParty
https://web.dev/1059ms28ms2ms1st
Unattributable492ms37ms0ms3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/js/devsite_devsite_header_module.js466ms90ms1ms3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/js/devsite_app_module.js425ms321ms23ms3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/js/devsite_app_custom_elements_module.js418ms194ms190ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MZWCJPP407ms328ms75ms3rd
https://www.googletagmanager.com/gtag/js?id=G-18JR3Q8PJ8&cx=c&gtm=4e6420h2322ms263ms56ms3rd
https://www.googletagmanager.com/gtag/js?id=G-64EQFFKSHW&l=atDataLayer&cx=c&gtm=4e6411293ms242ms49ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NDV7K7V5&l=atDataLayer279ms223ms53ms3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/web/css/app.css76ms0ms0ms3rd
C
Image Optimization
Action
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.dev/static/images/home-blue_856.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.dev/static/images/ai-feature_480.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.dev/static/images/inp-icon-only_480.jp... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://web.dev/static/identity/image/hero-identit... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11 images 83 KB
0 oversized -0 KB
5 legacy format
5 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
JS Bundles
Action
49 scripts, 298 KB unused
REVIEW
49 scripts, 298 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-64EQ...: 61 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-18JR...: 60 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-NDV...: 60 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MZW...: 60 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/devrel-devsite/prod/vb4124...: 29 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 298 KB
298 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-64EQFFKSHW&l=atDataLayer&cx=c&gtm=4e6411142 KB61 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-18JR3Q8PJ8&cx=c&gtm=4e6420h2146 KB60 KB (41%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NDV7K7V5&l=atDataLayer129 KB60 KB (47%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MZWCJPP136 KB60 KB (44%)✓3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/js/devsite_app_module.js58 KB29 KB (49%)✓3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/js/devsite_app_module.js58 KB29 KB (49%)✓3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/js/devsite_devsite_heading_link_module.js0 KB—✓3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/js/devsite_devsite_notification_module.js0 KB—✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js0 KB—✓3rd
https://www.gstatic.com/devrel-devsite/prod/vb4124e0eb36966d1f5cf3a7ca116e70a424f5334bce4dd1449f7f3a599cf8e09/js/devsite_app_custom_elements_module.js0 KB—✓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

B
HTTP Caching
no-cache, must-revalidate
REVIEW
no-cache, must-revalidate
Info::
Cache-Control header is set
Got: no-cache, must-revalidate
Info::
Last-Modified header present
Cache-Control

no-cache, must-revalidate

DirectiveValueMeaning
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
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
12 fonts (528 KB)
PASS
12 fonts (528 KB)
Info::
12 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

12

528 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 FCP 11.7 s LCP 12.9 shttps://fonts.gstatic.com/s/googlesans/v67/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RPjIUvbQoi-E.woff24UasrENHsxJlGDuGo1OIlJf... https://fonts.gstatic.com/s/googlesans/v67/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RPjIUvbQoi-E.woff2 — 35.3 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2flUhRq6tzZclQEJ-Vdg-Iui... https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2 — 125.6 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 36.7 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBA.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBA.woff2 — 42.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2flUhRq6tzZclQEJ-Vdg-Iui... https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2 — 125.4 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3KUBGEe.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3KUBGEe.woff2 — 28.7 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3iUBGEe.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3iUBGEe.woff2 — 23.1 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMawCUBGEe.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMawCUBGEe.woff2 — 40.4 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3-UBGEe.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3-UBGEe.woff2 — 17.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3OUBGEe.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3OUBGEe.woff2 — 14.0 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBA.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBA.woff2 — 39.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBA.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBA.woff2 — 0 B — 0 ms — font-display: swap
4UasrENHsxJlGDuGo1OIlJf... woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
flUhRq6tzZclQEJ-Vdg-Iui... woff2 swap
Size 126 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
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 37 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 42 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
flUhRq6tzZclQEJ-Vdg-Iui... woff2 swap
Size 125 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
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 29 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 40 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 17 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 14 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 39 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... 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 ~126 KB and ~252 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
5 hints, 0 missing preconnects
PASS
5 hints, 0 missing preconnects
Info::
Page uses 5 resource hint(s)

Current Resource Hints

preconnect
5
preload
—
dns-prefetch
—
prefetch
—

5 resource hints configured

A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

Network Waterfall
95 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
75% of JavaScript execution is third-party
First-party Third-party 3178ms · 764KB · €9/mo
Unattributable
Other
Costly
Execution 492ms
Transfer 0 KB
Monthly Cost €1/mo
www.gstatic.com
Other
Costly
Execution 466ms
Transfer 0 KB
Monthly Cost €1/mo
www.gstatic.com
Other
Costly
Execution 425ms
Transfer 58 KB
Unused 49%
Monthly Cost €1/mo
www.gstatic.com
Other
Costly
Execution 418ms
Transfer 0 KB
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Costly
Execution 407ms
Transfer 136 KB
Unused 44%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Costly
Execution 322ms
Transfer 146 KB
Unused 41%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Costly
Execution 293ms
Transfer 142 KB
Unused 43%
Monthly Cost €1/mo
Google Tag Manager
Tag Manager
Costly
Execution 279ms
Transfer 129 KB
Unused 47%
Monthly Cost €1/mo
www.gstatic.com
Other
Optional
Execution 76ms
Transfer 153 KB
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • Unattributable adds 492ms and costs ~€1/month
  • www.gstatic.com adds 466ms and costs ~€1/month
  • www.gstatic.com adds 425ms and costs ~€1/month
  • www.gstatic.com adds 418ms and costs ~€1/month
  • Google Tag Manager adds 407ms and costs ~€1/month
  • Google Tag Manager adds 322ms and costs ~€1/month
  • Google Tag Manager adds 293ms and costs ~€1/month
  • Google Tag Manager adds 279ms and costs ~€1/month

75% 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

Unattributable takes 492ms 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

www.gstatic.com takes 466ms 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

www.gstatic.com takes 425ms 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

www.gstatic.com takes 418ms 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 407ms 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

Google Tag Manager takes 293ms 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

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.

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