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https://fincen.gov

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
91
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
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.
69
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.

617 ms

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

1.89 s

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

10 ms

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

0.056

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

742 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

2.29 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
15
5 PASS 3 REVIEW 5 FIX
D
Page Weight Budget
Action
2.2 MB transferred, 55 requests
FIX
2.2 MB transferred, 55 requests
Info::
Page weighs 6.4 MB (2.2 MB transferred)
Warning::
JavaScript is 1.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.1 MB
Info::
55 HTTP requests
Info::
Estimated 0.47 g CO2 per page load
2.2 MB / 2.4 MB budget
2.2 MB transferred
55 requests
0.47 g CO2 per page load
JavaScript 1.1 MiB 49%
Images 782.5 KiB 34%
Fonts 198.4 KiB 9%
CSS 145.4 KiB 6%
Other 25.2 KiB 1%
HTML 11.5 KiB 1%
Other 1023 B 0%
Other 597 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

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 (2.2 MiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
10 scripts, 302 KB unused
FIX
10 scripts, 302 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 106 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-7K9S...: 63 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 62 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.fincen.gov/sites/default/files/js/js_8...: 39 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://s.go-mpulse.net/boomerang/NPLYJ-LHJA8-NDLX...: 32 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 302 KB
302 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64k1147 KB106 KB (72%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-7K9S6RGTEK159 KB63 KB (39%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147 KB62 KB (42%)✓3rd
https://www.fincen.gov/sites/default/files/js/js_84hnSCo_TuSP9MRcohxXQpnxc9YeWeYtt1GKwdUEUlY.js?scope=footer&delta=0&language=en&theme=fincen&include=eJx9ikEOgCAMwD60QOKHyIQxScZ2GGL8vVej0VvTtjbNpJHFVhSopgMPcusUbxx88l8LvrUOjCI4mi4R3Wk4sBkLJVSUc7Ts8Slg90qFbabX-llCLnoBZZFH3g57 KB39 KB (68%)✓3rd
https://s.go-mpulse.net/boomerang/NPLYJ-LHJA8-NDLXF-QZGTT-DGVDZ57 KB32 KB (57%)✓3rd
https://www.fincen.gov/libraries/fontawesome/js/all.min.js?v=6.4.2524 KB—✓3rd
https://www.fincen.gov/libraries/fontawesome/js/v4-shims.min.js?v=6.4.28 KB—✓3rd
https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=FinCEN&siteplatform=Drupal&pga4=G-7K9S6RGTEK9 KB—✓3rd
https://www.fincen.gov/akam/13/73b4705a9 KB—✓3rd
https://dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js4 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

D
Page Weight Inventory
Action
55 resources · 2.2 MB · 302 KB savings available
FIX
55 resources · 2.2 MB · 302 KB savings available
Warning::
Page weight 1.2 MB over 1MB target
Got: 2.2 MB Expected: ≤ 1 MB
Info::
~302 KB of savings available
Warning::
54 third-party resources (100% of weight)
Info::
2 resources over 200KB
55 resources · 2.2 MiB · 54 third-party 1.2 MiB over 1MB target
JavaScript 49% · 1.1 MiB
Image 35% · 807.7 KiB
Font 9% · 198.4 KiB
CSS 6% · 145.4 KiB
Document 1% · 11.5 KiB
Other 0% · 1.6 KiB

~301.7 KiB of savings available

Remove unused JavaScript: 301.7 KiB
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.

C
Image Optimization
Action
26 images, 0 KB saveable
REVIEW
26 images, 0 KB saveable
Warning::
https://www.fincen.gov/themes/custom/fincen/logo.p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fincen.gov/libraries/uswds/dist/img/us... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
26 images 783 KB
0 oversized -0 KB
24 legacy format
2 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

B
JS Execution Cost
687ms total JS execution
REVIEW
687ms total JS execution
Warning::
Unattributable: 252ms CPU time
Info::
https://www.fincen.gov/: 206ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-7K9S...: 83ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 77ms CPU time
Info::
https://www.fincen.gov/libraries/fontawesome/js/al...: 69ms CPU time
Warning::
Third-party scripts: 687ms (100% of total)

Main Thread Breakdown

Script Evaluation 32% Other 26% Style & Layout 23% Script Parsing & Compilation 12% Rendering 4% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
Unattributable252ms3ms0ms3rd
https://www.fincen.gov/206ms6ms1ms3rd
https://www.googletagmanager.com/gtag/js?id=G-7K9S6RGTEK83ms68ms14ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L77ms64ms13ms3rd
https://www.fincen.gov/libraries/fontawesome/js/all.min.js?v=6.4.269ms16ms53ms3rd
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
8 fonts (198 KB)
PASS
8 fonts (198 KB)
Info::
8 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

8

198 KB total

Render-blocking

0

of 8

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s FCP 617 ms LCP 1.9 shttps://www.fincen.gov/themes/custom/fincen/fonts/public-sans/PublicSans-Regular.woff2PublicSans-Regular.woff2 https://www.fincen.gov/themes/custom/fincen/fonts/public-sans/PublicSans-Regular.woff2 — 31.8 KiB — 47 ms — font-display: swaphttps://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/source-sans-pro/sourcesanspro-regular-webfont.woff2sourcesanspro-regular-w... https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/source-sans-pro/sourcesanspro-regular-webfont.woff2 — 20.1 KiB — 43 ms — font-display: swaphttps://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/merriweather/Latin-Merriweather-Light.woff2Latin-Merriweather-Ligh... https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/merriweather/Latin-Merriweather-Light.woff2 — 20.8 KiB — 64 ms — font-display: swaphttps://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/source-sans-pro/sourcesanspro-bold-webfont.woff2sourcesanspro-bold-webf... https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/source-sans-pro/sourcesanspro-bold-webfont.woff2 — 19.9 KiB — 64 ms — font-display: swaphttps://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/merriweather/Latin-Merriweather-Bold.woff2Latin-Merriweather-Bold... https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/merriweather/Latin-Merriweather-Bold.woff2 — 20.9 KiB — 67 ms — font-display: swaphttps://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/merriweather/Latin-Merriweather-Regular.woff2Latin-Merriweather-Regu... https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/fonts/merriweather/Latin-Merriweather-Regular.woff2 — 21.2 KiB — 55 ms — font-display: swaphttps://www.fincen.gov/themes/custom/fincen/fonts/public-sans/PublicSans-Bold.woff2PublicSans-Bold.woff2 https://www.fincen.gov/themes/custom/fincen/fonts/public-sans/PublicSans-Bold.woff2 — 31.7 KiB — 51 ms — font-display: swaphttps://www.fincen.gov/themes/custom/fincen/fonts/public-sans/PublicSans-ExtraBold.woff2PublicSans-ExtraBold.woff2 https://www.fincen.gov/themes/custom/fincen/fonts/public-sans/PublicSans-ExtraBold.woff2 — 32.0 KiB — 54 ms — font-display: swap
PublicSans-Regular.woff2 woff2 swap
Size 32 KB
Load time 47 ms
Start 363 ms
Risk FOUT — text flashes from fallback to web font
sourcesanspro-regular-w... woff2 swap
Size 20 KB
Load time 43 ms
Start 364 ms
Risk FOUT — text flashes from fallback to web font
Latin-Merriweather-Ligh... woff2 swap
Size 21 KB
Load time 64 ms
Start 364 ms
Risk FOUT — text flashes from fallback to web font
sourcesanspro-bold-webf... woff2 swap
Size 20 KB
Load time 64 ms
Start 364 ms
Risk FOUT — text flashes from fallback to web font
Latin-Merriweather-Bold... woff2 swap
Size 21 KB
Load time 67 ms
Start 367 ms
Risk FOUT — text flashes from fallback to web font
Latin-Merriweather-Regu... woff2 swap
Size 21 KB
Load time 55 ms
Start 368 ms
Risk FOUT — text flashes from fallback to web font
PublicSans-Bold.woff2 woff2 swap
Size 32 KB
Load time 51 ms
Start 368 ms
Risk FOUT — text flashes from fallback to web font
PublicSans-ExtraBold.woff2 woff2 swap
Size 32 KB
Load time 54 ms
Start 369 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
55 requests over 1271ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 617 ms LCP 1.9 shttps://fincen.gov// https://fincen.gov/ — 302 — 248 B — 28 ms — h2https://www.fincen.gov/www.fincen.gov/ https://www.fincen.gov/ — 200 — 11.5 KiB — 65 ms — h2https://www.googletagmanager.com/gtag/js?id=G-7K9S6RGTEKwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-7K9S6RGTEK — 200 — 159.5 KiB — 152 ms — h2https://www.fincen.gov/sites/default/files/css/css_NJxt0lahg4e7CHhK7T2ecQKAQxOIejTsxz2UrRhKukc.css?delta=0&language=en&theme=fincen&include=eJxLy8xLTs3TT8_JT0rM0UlPzMlJLMnMM9JPLC5OLSlGEoCxdIori0tSc_WTEotTdcoyU8uL9cGkXm5-SmlOKgDQ6R6rwww.fincen.gov/sites/default/files/... https://www.fincen.gov/sites/default/files/css/css_NJxt0lahg4e7CHhK7T2ecQKAQxOIejTsxz2UrRhKukc.css?delta=0&language=en&theme=fincen&include=eJxLy8xLTs3TT8_JT0rM0UlPzMlJLMnMM9JPLC5OLSlGEoCxdIori0tSc_WTEotTdcoyU8uL9cGkXm5-SmlOKgDQ6R6r — 200 — 1.6 KiB — 28 ms — h2https://www.fincen.gov/sites/default/files/css/css_WwZ8gTQLNwqlH-ojJo6IrUrrv5JFdX9HJ8RA_ZlqPgU.css?delta=1&language=en&theme=fincen&include=eJxLy8xLTs3TT8_JT0rM0UlPzMlJLMnMM9JPLC5OLSlGEoCxdIori0tSc_WTEotTdcoyU8uL9cGkXm5-SmlOKgDQ6R6rwww.fincen.gov/sites/default/files/... https://www.fincen.gov/sites/default/files/css/css_WwZ8gTQLNwqlH-ojJo6IrUrrv5JFdX9HJ8RA_ZlqPgU.css?delta=1&language=en&theme=fincen&include=eJxLy8xLTs3TT8_JT0rM0UlPzMlJLMnMM9JPLC5OLSlGEoCxdIori0tSc_WTEotTdcoyU8uL9cGkXm5-SmlOKgDQ6R6r — 200 — 143.8 KiB — 37 ms — h2https://www.fincen.gov/libraries/uswds/dist/img/us_flag_small.pngwww.fincen.gov/libraries/uswds/dist... https://www.fincen.gov/libraries/uswds/dist/img/us_flag_small.png — 200 — 967 B — 53 ms — h2https://www.fincen.gov/libraries/uswds/dist/img/icon-dot-gov.svgwww.fincen.gov/libraries/uswds/dist... https://www.fincen.gov/libraries/uswds/dist/img/icon-dot-gov.svg — 200 — 870 B — 33 ms — h2https://www.fincen.gov/libraries/uswds/dist/img/icon-https.svgwww.fincen.gov/libraries/uswds/dist... https://www.fincen.gov/libraries/uswds/dist/img/icon-https.svg — 200 — 418 B — 16 ms — h3https://www.fincen.gov/themes/custom/fincen/logo.pngwww.fincen.gov/themes/custom/fincen... https://www.fincen.gov/themes/custom/fincen/logo.png — 200 — 139.0 KiB — 20 ms — h3https://www.fincen.gov/themes/custom/gallatin2/img/close-white.svgwww.fincen.gov/themes/custom/gallat... https://www.fincen.gov/themes/custom/gallatin2/img/close-white.svg — 200 — 548 B — 23 ms — h3https://s.go-mpulse.net/boomerang/NPLYJ-LHJA8-NDLXF-QZGTT-DGVDZs.go-mpulse.net/boomerang/NPLYJ-LHJ... https://s.go-mpulse.net/boomerang/NPLYJ-LHJA8-NDLXF-QZGTT-DGVDZ — 200 — 56.6 KiB — 54 ms — h2https://www.fincen.gov/sites/default/files/js/js_84hnSCo_TuSP9MRcohxXQpnxc9YeWeYtt1GKwdUEUlY.js?scope=footer&delta=0&language=en&theme=fincen&include=eJx9ikEOgCAMwD60QOKHyIQxScZ2GGL8vVej0VvTtjbNpJHFVhSopgMPcusUbxx88l8LvrUOjCI4mi4R3Wk4sBkLJVSUc7Ts8Slg90qFbabX-llCLnoBZZFH3gwww.fincen.gov/sites/default/files/... https://www.fincen.gov/sites/default/files/js/js_84hnSCo_TuSP9MRcohxXQpnxc9YeWeYtt1GKwdUEUlY.js?scope=footer&delta=0&language=en&theme=fincen&include=eJx9ikEOgCAMwD60QOKHyIQxScZ2GGL8vVej0VvTtjbNpJHFVhSopgMPcusUbxx88l8LvrUOjCI4mi4R3Wk4sBkLJVSUc7Ts8Slg90qFbabX-llCLnoBZZFH3g — 200 — 56.8 KiB — 43 ms — h3https://www.fincen.gov/libraries/fontawesome/js/all.min.js?v=6.4.2www.fincen.gov/libraries/fontawesom... https://www.fincen.gov/libraries/fontawesome/js/all.min.js?v=6.4.2 — 200 — 524.0 KiB — 96 ms — h3https://www.fincen.gov/libraries/fontawesome/js/v4-shims.min.js?v=6.4.2www.fincen.gov/libraries/fontawesom... https://www.fincen.gov/libraries/fontawesome/js/v4-shims.min.js?v=6.4.2 — 200 — 7.7 KiB — 38 ms — h3https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=FinCEN&siteplatform=Drupal&pga4=G-7K9S6RGTEKdap.digitalgov.gov/Universal-Federa... https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=FinCEN&siteplatform=Drupal&pga4=G-7K9S6RGTEK — 200 — 9.4 KiB — 119 ms — h3https://www.fincen.gov/akam/13/73b4705awww.fincen.gov/akam/13/73b4705a https://www.fincen.gov/akam/13/73b4705a — 200 — 8.6 KiB — 79 ms — h3https://www.fincen.gov/libraries/uswds/dist/img/sprite.svgwww.fincen.gov/libraries/uswds/dist... https://www.fincen.gov/libraries/uswds/dist/img/sprite.svg — 200 — 21.9 KiB — 89 ms — h3https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/img/usa-icons/expand_more.svgwww.fincen.gov/themes/custom/gallat... https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/img/usa-icons/expand_more.svg — 200 — 182 B — 69 ms — h3https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/img/usa-icons-bg/expand_more--white.svgwww.fincen.gov/themes/custom/gallat... https://www.fincen.gov/themes/custom/gallatin2/assets/uswds/img/usa-icons-bg/expand_more--white.svg — 200 — 211 B — 74 ms — h3https://www.fincen.gov/themes/custom/gallatin2/img/search.svgwww.fincen.gov/themes/custom/gallat... https://www.fincen.gov/themes/custom/gallatin2/img/search.svg — 200 — 599 B — 68 ms — h3https://www.fincen.gov/system/files/fincen-hero-final.pngwww.fincen.gov/system/files/fincen-... https://www.fincen.gov/system/files/fincen-hero-final.png — 200 — 364.4 KiB — 89 ms — h3https://www.fincen.gov/themes/custom/fincen/logo.svgwww.fincen.gov/themes/custom/fincen... https://www.fincen.gov/themes/custom/fincen/logo.svg — 200 — 146.5 KiB — 79 ms — h3https://www.fincen.gov/themes/custom/gallatin2/img/right-arrow-circle-black.svgwww.fincen.gov/themes/custom/gallat... 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— 48 B — 41 ms — h2https://www.fincen.gov/themes/custom/fincen/favicon.icowww.fincen.gov/themes/custom/fincen... https://www.fincen.gov/themes/custom/fincen/favicon.ico — 200 — 3.0 KiB — 14 ms — h3https://17de4c19.akstat.io/17de4c19.akstat.io/ https://17de4c19.akstat.io/ — 204 — 226 B — 68 ms — h2https://www.fincen.gov/akam/13/pixel_73b4705awww.fincen.gov/akam/13/pixel_73b470... https://www.fincen.gov/akam/13/pixel_73b4705a — 200 — 23 B — 11 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
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 687ms · 842KB · $9/mo
Unattributable
Other
Costly
Execution 252ms
Transfer 0 KB
Monthly Cost $3/mo
www.fincen.gov
Other
Costly
Execution 206ms
Transfer 12 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 83ms
Transfer 159 KB
Unused 39%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 77ms
Transfer 147 KB
Unused 42%
Monthly Cost $1/mo
www.fincen.gov
Other
Optional
Execution 69ms
Transfer 524 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 252ms and costs ~$3/month
  • www.fincen.gov adds 206ms 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

Unattributable takes 252ms 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.fincen.gov takes 206ms 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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