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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
5
REVIEW
2
PASS
5
INFO
2

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

Mobile Desktop
38
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
73
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.
75
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.

1.57 s

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

4.33 s

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

777 ms

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

0.041

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

3.90 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.

6.12 s

Page Load Progression

1.0 s
2.1 s
3.1 s
4.1 s
5.2 s
6.2 s
7.3 s
8.3 s
Checks
14
5 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
10.3 MB transferred, 159 requests
FIX
10.3 MB transferred, 159 requests
Critical::
Page weighs 20.5 MB (10.3 MB transferred)
Warning::
JavaScript is 3.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 3.1 MB
Info::
Fonts are 321 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 321 KB
Warning::
159 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 2.2 g CO2 per page load
10.3 MB / 2.4 MB budget
10.3 MB transferred
159 requests
2.2 g CO2 per page load
Other 5.2 MiB 50%
JavaScript 3.1 MiB 30%
Images 827.3 KiB 8%
Other 409.2 KiB 4%
HTML 349.1 KiB 3%
Fonts 320.8 KiB 3%
CSS 108.8 KiB 1%
Other 21.2 KiB 0%
Other 7.4 KiB 0%
Other 327 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

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

D
Third-Party Impact
Action
70% third-party, 0 ms blocking
FIX
70% third-party, 0 ms blocking
Warning::
Third-party code accounts for 70% of page weight (7.2 MiB of 10.3 MiB)
Info::
Third-party blocking time is low (0 ms)
30%
70%
First-party Third-party
F
JS Execution Cost
Action
4826ms total JS execution
FIX
4826ms total JS execution
Warning::
https://cua-help-me-charge-ui.tesla.com/charging-m...: 1193ms CPU time
Warning::
https://www.tesla.com/: 729ms CPU time
Warning::
Unattributable: 344ms CPU time
Warning::
https://www.tesla.com/_flysystem/s3/js/js_lgAUF73E...: 328ms CPU time
Warning::
https://maps.googleapis.com/maps-api-v3/api/js/63/...: 320ms CPU time
Info::
Third-party scripts: 2383ms (49% of total)

Main Thread Breakdown

Script Evaluation 58% Style & Layout 20% Other 12% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
https://cua-help-me-charge-ui.tesla.com/charging-map/charging-map-DR8fdE3w.js1193ms1127ms0ms3rd
https://www.tesla.com/729ms3ms1ms1st
Unattributable344ms59ms0ms3rd
https://www.tesla.com/_flysystem/s3/js/js_lgAUF73EwPZckdVetLd3hyJnuiTfS29L8jj_UyRK5Q4.js328ms162ms3ms1st
https://maps.googleapis.com/maps-api-v3/api/js/63/14d/util.js320ms220ms7ms3rd
https://www.tesla.com/_flysystem/s3/js/js_wPIJyP4bm3RMopeEZRmZCteTA_OhbwuKvmqcPnLLdCI.js289ms89ms119ms1st
https://www.tesla.com/VyIxAvoRX/iT/z6D1Ypw/Qmr5JwS9/PlRjdnQ/TE4ofl/pFGwFu?v=d5bb7c85-735d-89e9-e00c-4f3347380211287ms248ms12ms1st
https://www.tesla.com/VyIxAvoRX/iT/z6D1Ypw/afr5JwS91Jb5rQ/HxNednQ/Hy8rfj/goDngB240ms220ms15ms1st
https://www.tesla.com/_flysystem/s3/js/js_Jn-fFtlQnABG5gJ90DCKcJgdUfZs7ffU6ZG8VwjhJKc.js216ms163ms0ms1st
https://maps.googleapis.com/maps-api-v3/api/js/63/14d/controls.js209ms54ms3ms3rd

Showing top 10 of 16 scripts

F
JS Bundles
Action
27 scripts, 832 KB unused
FIX
27 scripts, 832 KB unused
Warning::
https://cua-chat-ui.tesla.com/assets/www_orca_avay...: 253 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.tesla.com/_flysystem/s3/js/js_KoDDy_wx...: 166 KB unused (30%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.tesla.com/_flysystem/s3/js/js_wPIJyP4b...: 135 KB unused (11%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://maps.googleapis.com/maps/api/js?client=gme...: 84 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.tesla.com/VyIxAvoRX/iT/z6D1Ypw/afr5JwS...: 38 KB unused (22%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 832 KB
832 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cua-chat-ui.tesla.com/assets/www_orca_avaya-CyQF1ULT.js397 KB253 KB (65%)✓3rd
https://www.tesla.com/_flysystem/s3/js/js_KoDDy_wxLdN4gE_TuIsv5xM3rGklD15HSAu_tvi9fjo.js560 KB166 KB (30%)✓1st
https://www.tesla.com/_flysystem/s3/js/js_wPIJyP4bm3RMopeEZRmZCteTA_OhbwuKvmqcPnLLdCI.js1235 KB135 KB (11%)✓1st
https://maps.googleapis.com/maps/api/js?client=gme-teslamotorsinc&language=en-US&libraries=places&region=US&v=3.55173 KB84 KB (49%)✓3rd
https://www.tesla.com/VyIxAvoRX/iT/z6D1Ypw/afr5JwS91Jb5rQ/HxNednQ/Hy8rfj/goDngB176 KB38 KB (22%)✓1st
https://www.tesla.com/_flysystem/s3/js/js_V1jVDsHcMIHYfWteQMBLNX0tzLs3sMW8dcwIb9BQQEc.js62 KB34 KB (54%)✓1st
https://www.tesla.com/VyIxAvoRX/iT/z6D1Ypw/Qmr5JwS9/PlRjdnQ/TE4ofl/pFGwFu?v=d5bb7c85-735d-89e9-e00c-4f3347380211160 KB31 KB (20%)✓1st
https://www.tesla.com/_flysystem/s3/js/js_1-9vQRpdDrFXUeDIMIfORd4gEjkiHTuFRfD_qcGzADQ.js88 KB25 KB (28%)✓1st
https://cua-help-me-charge-ui.tesla.com/charging-map/charging-map-DR8fdE3w.js71 KB24 KB (34%)✓3rd
https://maps.googleapis.com/maps-api-v3/api/js/63/14d/util.js71 KB22 KB (31%)✓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.

No Cache-Control header

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

B
Image Optimization
62 images, 0 KB saveable
REVIEW
62 images, 0 KB saveable
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://digitalassets.tesla.com/tesla-contents/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
62 images 827 KB
0 oversized -0 KB
1 legacy format
20 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

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

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

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

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
10 fonts (321 KB)
PASS
10 fonts (321 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

321 KB total

Render-blocking

0

of 10

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 FCP 1.6 s LCP 4.3 shttps://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/universal-sans-2/web/text/Universal-Sans-Text-Regular.woff2Universal-Sans-Text-Reg... https://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/universal-sans-2/web/text/Universal-Sans-Text-Regular.woff2 — 37.7 KiB — 0 ms — font-display: swaphttps://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/universal-sans-2/web/text/Universal-Sans-Text-Medium.woff2Universal-Sans-Text-Med... https://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/universal-sans-2/web/text/Universal-Sans-Text-Medium.woff2 — 38.2 KiB — 0 ms — font-display: swaphttps://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/universal-sans-2/web/display/Universal-Sans-Display-Medium.woff2Universal-Sans-Display-... https://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/universal-sans-2/web/display/Universal-Sans-Display-Medium.woff2 — 37.3 KiB — 0 ms — font-display: swaphttps://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/universal-sans-2/web/display/Universal-Sans-Display-Regular.woff2Universal-Sans-Display-... https://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/universal-sans-2/web/display/Universal-Sans-Display-Regular.woff2 — 37.7 KiB — 0 ms — font-display: swaphttps://digitalassets.tesla.com/tesla-design-system/raw/upload/v1717099946/static/fonts/intl-fonts/Noto-Sans-Hebrew.woff2Noto-Sans-Hebrew.woff2 https://digitalassets.tesla.com/tesla-design-system/raw/upload/v1717099946/static/fonts/intl-fonts/Noto-Sans-Hebrew.woff2 — 16.4 KiB — 0 ms — font-display: swaphttps://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/intl-fonts/Noto-Sans-Arabic.woff2Noto-Sans-Arabic.woff2 https://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/intl-fonts/Noto-Sans-Arabic.woff2 — 67.8 KiB — 0 ms — font-display: swaphttps://digitalassets.tesla.com/tesla-design-system/raw/upload/v1717100930/static/fonts/intl-fonts/Noto-Sans-Thai.woff2Noto-Sans-Thai.woff2 https://digitalassets.tesla.com/tesla-design-system/raw/upload/v1717100930/static/fonts/intl-fonts/Noto-Sans-Thai.woff2 — 25.8 KiB — 0 ms — font-display: swaphttps://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/intl-fonts/Noto-Sans-Greek.woff2Noto-Sans-Greek.woff2 https://digitalassets.tesla.com/tesla-design-system/raw/upload/static/fonts/intl-fonts/Noto-Sans-Greek.woff2 — 23.2 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/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 0 B — 0 ms — font-display: swap
Universal-Sans-Text-Reg... woff2 swap
Size 38 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Universal-Sans-Text-Med... woff2 swap
Size 38 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Universal-Sans-Display-... woff2 swap
Size 37 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Universal-Sans-Display-... woff2 swap
Size 38 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Noto-Sans-Hebrew.woff2 woff2 swap
Size 16 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Noto-Sans-Arabic.woff2 woff2 swap
Size 68 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Noto-Sans-Thai.woff2 woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Noto-Sans-Greek.woff2 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 37 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)
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
159 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
49% of JavaScript execution is third-party
First-party Third-party 2383ms · 763KB · $32/mo
cua-help-me-charge-ui.tesla.com
Other
Costly
Execution 1193ms
Transfer 71 KB
Unused 34%
Monthly Cost $16/mo
Unattributable
Other
Costly
Execution 344ms
Transfer 0 KB
Monthly Cost $5/mo
maps.googleapis.com
Other
Costly
Execution 320ms
Transfer 71 KB
Unused 31%
Monthly Cost $4/mo
maps.googleapis.com
Other
Costly
Execution 209ms
Transfer 26 KB
Monthly Cost $3/mo
maps.googleapis.com
Other
Optional
Execution 148ms
Transfer 25 KB
Monthly Cost $2/mo
cua-chat-ui.tesla.com
Other
Optional
Execution 113ms
Transfer 397 KB
Unused 65%
Monthly Cost $2/mo
maps.googleapis.com
Other
Optional
Execution 55ms
Transfer 173 KB
Unused 49%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • cua-help-me-charge-ui.tesla.com adds 1193ms and costs ~$16/month
  • Unattributable adds 344ms and costs ~$5/month
  • maps.googleapis.com adds 320ms and costs ~$4/month
  • maps.googleapis.com adds 209ms and costs ~$3/month

49% 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

cua-help-me-charge-ui.tesla.com takes 1193ms 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

Unattributable takes 344ms 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

maps.googleapis.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

maps.googleapis.com takes 209ms 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 cua-chat-ui.tesla.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.

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