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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
22
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
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.

3.94 s

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

27.75 s

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

721 ms

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

0.802

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

5.33 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.

28.43 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
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
6.1 MB transferred, 118 requests
FIX
6.1 MB transferred, 118 requests
Critical::
Page weighs 8.7 MB (6.1 MB transferred)
Warning::
Images are 4.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 4.5 MB
Warning::
JavaScript is 851 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 851 KB
Info::
Fonts are 523 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 523 KB
Info::
CSS is 202 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 202 KB
Warning::
118 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.3 g CO2 per page load
6.1 MB / 2.4 MB budget
6.1 MB transferred
118 requests
1.3 g CO2 per page load
Images 4.5 MiB 74%
JavaScript 850.9 KiB 14%
Fonts 523.0 KiB 8%
CSS 201.7 KiB 3%
HTML 17.5 KiB 0%
Other 14.9 KiB 0%
0 2.4 MB 4.9 MB
Over budget

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

Why this matters

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

Source: web.dev

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

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 (6.1 MiB of 6.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2839ms total JS execution
FIX
2839ms total JS execution
Warning::
Unattributable: 649ms CPU time
Warning::
https://www.cpsc.gov/: 486ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-55LV...: 434ms CPU time
Warning::
https://content.govdelivery.com/overlay/js/11021.j...: 300ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 271ms CPU time
Warning::
Third-party scripts: 2839ms (100% of total)

Main Thread Breakdown

Script Evaluation 39% Other 27% Style & Layout 19% Script Parsing & Compilation 8% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
Unattributable649ms12ms0ms3rd
https://www.cpsc.gov/486ms27ms3ms3rd
https://www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V434ms219ms40ms3rd
https://content.govdelivery.com/overlay/js/11021.js300ms187ms26ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L271ms228ms42ms3rd
https://www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c&gtm=4e64h1266ms195ms51ms3rd
https://www.cpsc.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1170ms97ms9ms3rd
https://www.cpsc.gov/core/misc/drupal.init.js?v=10.5.677ms50ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64h167ms36ms31ms3rd
https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/js/uswds.min.js60ms42ms9ms3rd

Showing top 10 of 11 scripts

D
JS Bundles
Action
49 scripts, 357 KB unused
FIX
49 scripts, 357 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-XM65...: 66 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-55LV...: 63 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://content.govdelivery.com/overlay/js/11021.j...: 39 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 357 KB
357 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64h1147 KB106 KB (72%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c&gtm=4e64h1160 KB66 KB (41%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V160 KB63 KB (39%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147 KB63 KB (43%)✓3rd
https://content.govdelivery.com/overlay/js/11021.js80 KB39 KB (49%)✓3rd
https://static.addtoany.com/menu/modules/core.ydpp7jcu.js26 KB21 KB (82%)✓3rd
https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/disable-selection-min.js?v=1.13.20 KB—✓3rd
https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/position-min.js?v=1.13.22 KB—✓3rd
https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widget-min.js?v=1.13.23 KB—✓3rd
https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/controlgroup-min.js?v=1.13.22 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
118 resources · 6.1 MB · 357 KB savings available
FIX
118 resources · 6.1 MB · 357 KB savings available
Warning::
Page weight 5.1 MB over 1MB target
Got: 6.1 MB Expected: ≤ 1 MB
Info::
~357 KB of savings available
Warning::
117 third-party resources (100% of weight)
Info::
6 resources over 200KB
118 resources · 6.1 MiB · 117 third-party 5.1 MiB over 1MB target
Image 75% · 4.6 MiB
JavaScript 14% · 850.9 KiB
Font 8% · 523.0 KiB
CSS 3% · 201.7 KiB
Document 0% · 17.5 KiB
Other 0% · 96 B

~357.3 KiB of savings available

Remove unused JavaScript: 357.3 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
19 images, 0 KB saveable
REVIEW
19 images, 0 KB saveable
Warning::
https://content.govdelivery.com/attachments/fancy_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/di... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cpsc.gov/sites/default/themes/cpsc/ass... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cpsc.gov/s3fs-public/2026-01/carbon_mo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cpsc.gov/sites/default/themes/cpsc/ass... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cpsc.gov/s3fs-public/styles/recall_pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cpsc.gov/s3fs-public/2024-09/CPSC_smal... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cpsc.gov/s3fs-public/SafetyAlert_5101_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
19 images 4.5 MB
0 oversized -0 KB
17 legacy format
8 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

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 (523 KB)
PASS
10 fonts (523 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

523 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s FCP 3.9 s LCP 27.7 shttps://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-regular-webfont.woff2sourcesanspro-regular-w... https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-regular-webfont.woff2 — 20.4 KiB — 7 ms — font-display: swaphttps://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-bold-webfont.woff2sourcesanspro-bold-webf... https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-bold-webfont.woff2 — 20.3 KiB — 6 ms — font-display: swaphttps://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-italic-webfont.woff2sourcesanspro-italic-we... https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-italic-webfont.woff2 — 16.4 KiB — 8 ms — font-display: swaphttps://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-bolditalic-webfont.woff2sourcesanspro-bolditali... https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-bolditalic-webfont.woff2 — 16.4 KiB — 8 ms — font-display: swaphttps://www.cpsc.gov/sites/default/libraries/fontawesome/webfonts/fa-brands-400.woff2fa-brands-400.woff2 https://www.cpsc.gov/sites/default/libraries/fontawesome/webfonts/fa-brands-400.woff2 — 107.3 KiB — 12 ms — font-display: swaphttps://www.cpsc.gov/sites/default/themes/cpsc/assets/webfonts/fa-brands-400.woff2fa-brands-400.woff2 https://www.cpsc.gov/sites/default/themes/cpsc/assets/webfonts/fa-brands-400.woff2 — 74.8 KiB — 19 ms — font-display: swaphttps://www.cpsc.gov/sites/default/themes/cpsc/assets/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://www.cpsc.gov/sites/default/themes/cpsc/assets/webfonts/fa-solid-900.woff2 — 77.6 KiB — 18 ms — font-display: swaphttps://www.cpsc.gov/sites/default/libraries/fontawesome/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://www.cpsc.gov/sites/default/libraries/fontawesome/webfonts/fa-solid-900.woff2 — 146.5 KiB — 11 ms — font-display: swaphttps://www.cpsc.gov/sites/default/libraries/flexslider/fonts/flexslider-icon.woffflexslider-icon.woff https://www.cpsc.gov/sites/default/libraries/flexslider/fonts/flexslider-icon.woff — 1.3 KiB — 164 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.0 KiB — 38 ms — font-display: swap
sourcesanspro-regular-w... woff2 swap
Size 20 KB
Load time 7 ms
Start 908 ms
Risk FOUT — text flashes from fallback to web font
sourcesanspro-bold-webf... woff2 swap
Size 20 KB
Load time 6 ms
Start 908 ms
Risk FOUT — text flashes from fallback to web font
sourcesanspro-italic-we... woff2 swap
Size 16 KB
Load time 8 ms
Start 908 ms
Risk FOUT — text flashes from fallback to web font
sourcesanspro-bolditali... woff2 swap
Size 16 KB
Load time 8 ms
Start 910 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 107 KB
Load time 12 ms
Start 1.3 s
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
fa-brands-400.woff2 woff2 swap
Size 75 KB
Load time 19 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
fa-solid-900.woff2 woff2 swap
Size 78 KB
Load time 18 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
fa-solid-900.woff2 woff2 swap
Size 147 KB
Load time 11 ms
Start 1.3 s
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
flexslider-icon.woff woff swap
Size 1 KB
Load time 164 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 38 ms
Start 1.5 s
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 ~127 KB and ~254 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
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
118 requests over 1879ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s FCP 3.9 s LCP 27.7 shttps://cpsc.gov// https://cpsc.gov/ — 301 — 96 B — 27 ms — h2https://www.cpsc.gov/www.cpsc.gov/ https://www.cpsc.gov/ — 200 — 16.6 KiB — 519 ms — h2https://www.googletagmanager.com/gtag/js?id=G-55LVJ78J3Vwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V — 200 — 160.1 KiB — 239 ms — h2https://www.cpsc.gov/core/modules/system/css/components/align.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/align.module.css?tdushu — 200 — 2.4 KiB — 182 ms — h2https://www.cpsc.gov/core/modules/system/css/components/fieldgroup.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/fieldgroup.module.css?tdushu — 200 — 2.3 KiB — 415 ms — h2https://www.cpsc.gov/core/modules/system/css/components/container-inline.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/container-inline.module.css?tdushu — 200 — 2.3 KiB — 393 ms — h2https://www.cpsc.gov/core/modules/system/css/components/clearfix.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/clearfix.module.css?tdushu — 200 — 2.4 KiB — 397 ms — h2https://www.cpsc.gov/core/modules/system/css/components/details.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/details.module.css?tdushu — 200 — 2.3 KiB — 411 ms — h2https://www.cpsc.gov/core/modules/system/css/components/hidden.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/hidden.module.css?tdushu — 200 — 2.8 KiB — 464 ms — h2https://www.cpsc.gov/core/modules/system/css/components/item-list.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/item-list.module.css?tdushu — 200 — 2.3 KiB — 389 ms — h2https://www.cpsc.gov/core/modules/system/css/components/js.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/js.module.css?tdushu — 200 — 2.5 KiB — 363 ms — h2https://www.cpsc.gov/core/modules/system/css/components/nowrap.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/nowrap.module.css?tdushu — 200 — 2.3 KiB — 457 ms — h2https://www.cpsc.gov/core/modules/system/css/components/position-container.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/position-container.module.css?tdushu — 200 — 2.3 KiB — 429 ms — h2https://www.cpsc.gov/core/modules/system/css/components/reset-appearance.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/reset-appearance.module.css?tdushu — 200 — 2.3 KiB — 371 ms — h2https://www.cpsc.gov/core/modules/system/css/components/resize.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/resize.module.css?tdushu — 200 — 2.3 KiB — 378 ms — h2https://www.cpsc.gov/core/modules/system/css/components/system-status-counter.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/system-status-counter.css?tdushu — 200 — 2.5 KiB — 375 ms — h2https://www.cpsc.gov/core/modules/system/css/components/system-status-report-counters.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/system-status-report-counters.css?tdushu — 200 — 2.5 KiB — 432 ms — h2https://www.cpsc.gov/core/modules/system/css/components/system-status-report-general-info.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/system-status-report-general-info.css?tdushu — 200 — 2.3 KiB — 370 ms — h2https://www.cpsc.gov/core/modules/system/css/components/tablesort.module.css?tdushuwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/tablesort.module.css?tdushu — 200 — 2.4 KiB — 372 ms — h2https://www.cpsc.gov/sites/default/libraries/flexslider/flexslider.css?tdushuwww.cpsc.gov/sites/default/librarie... https://www.cpsc.gov/sites/default/libraries/flexslider/flexslider.css?tdushu — 200 — 3.7 KiB — 392 ms — h2https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/themes/base/core.css?tdushuwww.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/themes/base/core.css?tdushu — 200 — 2.9 KiB — 378 ms — 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h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/draggable-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/draggable-min.js?v=1.13.2 — 200 — 4.8 KiB — 116 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/disable-selection-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/disable-selection-min.js?v=1.13.2 — 200 — 422 B — 117 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/resizable-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/resizable-min.js?v=1.13.2 — 200 — 5.3 KiB — 120 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/focusable-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/focusable-min.js?v=1.13.2 — 200 — 621 B — 116 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/position-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/position-min.js?v=1.13.2 — 200 — 2.3 KiB — 117 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/tabbable-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/tabbable-min.js?v=1.13.2 — 200 — 377 B — 114 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/unique-id-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/unique-id-min.js?v=1.13.2 — 200 — 400 B — 118 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/dialog-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/dialog-min.js?v=1.13.2 — 200 — 3.9 KiB — 117 ms — h3https://www.cpsc.gov/modules/contrib/addtoany/js/addtoany.js?v=10.5.6www.cpsc.gov/modules/contrib/addtoa... https://www.cpsc.gov/modules/contrib/addtoany/js/addtoany.js?v=10.5.6 — 200 — 279 B — 118 ms — h3https://www.cpsc.gov/modules/contrib/back_to_top/js/back_to_top.js?v=10.5.6www.cpsc.gov/modules/contrib/back_t... https://www.cpsc.gov/modules/contrib/back_to_top/js/back_to_top.js?v=10.5.6 — 200 — 856 B — 118 ms — h3https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/js/uswds.min.jscdn.jsdelivr.net/npm/@uswds/uswds@3... https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/js/uswds.min.js — 200 — 25.3 KiB — 45 ms — h2https://www.cpsc.gov/sites/default/themes/cpsc/assets/js/cpsc.min.js?v=10.5.6www.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/js/cpsc.min.js?v=10.5.6 — 200 — 1.5 KiB — 115 ms — h3https://www.cpsc.gov/sites/default/themes/cpsc/assets/js/250-countdown.js?v=10.5.6www.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/js/250-countdown.js?v=10.5.6 — 200 — 1.2 KiB — 104 ms — h3https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?ver=true&amp;agency=CPSCdap.digitalgov.gov/Universal-Federa... https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?ver=true&amp;agency=CPSC — 200 — 9.4 KiB — 124 ms — h3https://www.cpsc.gov/sites/default/themes/cpsc/assets/js/atc.min.js?tdushuwww.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/js/atc.min.js?tdushu — 200 — 7.6 KiB — 510 ms — h3https://content.govdelivery.com/overlay/js/11021.jscontent.govdelivery.com/overlay/js/... https://content.govdelivery.com/overlay/js/11021.js — 200 — 79.7 KiB — 535 ms — http/1.1https://www.cpsc.gov/sites/default/themes/cpsc/assets/js/front.js?tdushuwww.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/js/front.js?tdushu — 200 — 239 B — 354 ms — h3https://www.cpsc.gov/sites/default/libraries/flexslider/jquery.flexslider-min.js?tdushuwww.cpsc.gov/sites/default/librarie... https://www.cpsc.gov/sites/default/libraries/flexslider/jquery.flexslider-min.js?tdushu — 200 — 6.5 KiB — 448 ms — h3https://www.cpsc.gov/modules/contrib/flexslider/dist/js/flexslider.load.min.js?tdushuwww.cpsc.gov/modules/contrib/flexsl... https://www.cpsc.gov/modules/contrib/flexslider/dist/js/flexslider.load.min.js?tdushu — 200 — 446 B — 374 ms — h3https://www.cpsc.gov/modules/contrib/google_analytics/js/google_analytics.js?v=10.5.6www.cpsc.gov/modules/contrib/google... https://www.cpsc.gov/modules/contrib/google_analytics/js/google_analytics.js?v=10.5.6 — 200 — 1.9 KiB — 126 ms — h3https://www.cpsc.gov/s3fs-public/SafetyAlert_5101_WaterBeads_082024.jpg?VersionId=O07Zr0YxBKC4GLwPMRf3WuWJWY9Ctt4Rwww.cpsc.gov/s3fs-public/SafetyAler... https://www.cpsc.gov/s3fs-public/SafetyAlert_5101_WaterBeads_082024.jpg?VersionId=O07Zr0YxBKC4GLwPMRf3WuWJWY9Ctt4R — 200 — 662.9 KiB — 452 ms — h3https://www.cpsc.gov/s3fs-public/2024-09/CPSC_small-business.jpgwww.cpsc.gov/s3fs-public/2024-09/CP... https://www.cpsc.gov/s3fs-public/2024-09/CPSC_small-business.jpg — 200 — 724.2 KiB — 175 ms — h3https://www.cpsc.gov/s3fs-public/2026-01/carbon_monoxide_peace_of_mind_v1.png?VersionId=7w4RbHK6VuGvuwH7272gZvl1JGbPyIKbwww.cpsc.gov/s3fs-public/2026-01/ca... https://www.cpsc.gov/s3fs-public/2026-01/carbon_monoxide_peace_of_mind_v1.png?VersionId=7w4RbHK6VuGvuwH7272gZvl1JGbPyIKb — 200 — 1.2 MiB — 187 ms — h3https://www.cpsc.gov/sites/default/themes/cpsc/assets/images/cpsc_logo_text.pngwww.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/images/cpsc_logo_text.png — 200 — 98.5 KiB — 141 ms — h3https://www.cpsc.gov/sites/default/themes/cpsc/assets/images/BlueSky.svgwww.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/images/BlueSky.svg — 200 — 565 B — 135 ms — h3https://www.cpsc.gov/sites/default/themes/cpsc/assets/images/TruthSocial.svgwww.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/images/TruthSocial.svg — 200 — 239 B — 135 ms — h3https://static.addtoany.com/menu/page.jsstatic.addtoany.com/menu/page.js https://static.addtoany.com/menu/page.js — 200 — 2.2 KiB — 130 ms — h3https://www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c&gtm=4e64h1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c&gtm=4e64h1 — 200 — 160.0 KiB — 53 ms — h2https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/img/usa-icons/expand_more.svgcdn.jsdelivr.net/npm/@uswds/uswds@3... https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/img/usa-icons/expand_more.svg — 200 — 483 B — 6 ms — h3data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' v…www.w3.org/2000/svg' width='24' hei... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' v… — 200 — 0 B — 0 ms — datahttps://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-regular-webfont.woff2cdn.jsdelivr.net/npm/@uswds/uswds@3... https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-regular-webfont.woff2 — 200 — 20.4 KiB — 7 ms — h3https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/fonts/source-sans-pro/sourcesanspro-bold-webfont.woff2cdn.jsdelivr.net/npm/@uswds/uswds@3... 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h2https://www.cpsc.gov/sites/default/libraries/fontawesome/webfonts/fa-brands-400.woff2www.cpsc.gov/sites/default/librarie... https://www.cpsc.gov/sites/default/libraries/fontawesome/webfonts/fa-brands-400.woff2 — 200 — 107.3 KiB — 12 ms — h3https://www.cpsc.gov/sites/default/themes/cpsc/assets/webfonts/fa-brands-400.woff2www.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/webfonts/fa-brands-400.woff2 — 200 — 74.8 KiB — 19 ms — h3https://www.cpsc.gov/sites/default/themes/cpsc/assets/webfonts/fa-solid-900.woff2www.cpsc.gov/sites/default/themes/c... https://www.cpsc.gov/sites/default/themes/cpsc/assets/webfonts/fa-solid-900.woff2 — 200 — 77.6 KiB — 18 ms — h3https://www.cpsc.gov/sites/default/libraries/fontawesome/webfonts/fa-solid-900.woff2www.cpsc.gov/sites/default/librarie... https://www.cpsc.gov/sites/default/libraries/fontawesome/webfonts/fa-solid-900.woff2 — 200 — 146.5 KiB — 11 ms — 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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 2839ms · 771KB · $38/mo
Unattributable
Other
Costly
Execution 649ms
Transfer 0 KB
Monthly Cost $9/mo
www.cpsc.gov
Other
Costly
Execution 486ms
Transfer 17 KB
Monthly Cost $6/mo
Google Tag Manager
Tag Manager
Costly
Execution 434ms
Transfer 160 KB
Unused 39%
Monthly Cost $6/mo
content.govdelivery.com
Other
Costly
Execution 300ms
Transfer 80 KB
Unused 49%
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 271ms
Transfer 147 KB
Unused 43%
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 266ms
Transfer 160 KB
Unused 41%
Monthly Cost $4/mo
www.cpsc.gov
Other
Optional
Execution 170ms
Transfer 30 KB
Monthly Cost $2/mo
www.cpsc.gov
Other
Optional
Execution 77ms
Transfer 1 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 67ms
Transfer 147 KB
Unused 72%
Monthly Cost $1/mo
jsDelivr
CDN
Optional
Execution 60ms
Transfer 25 KB
Monthly Cost $1/mo
dap.digitalgov.gov
Other
Optional
Execution 58ms
Transfer 4 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 649ms and costs ~$9/month
  • www.cpsc.gov adds 486ms and costs ~$6/month
  • Google Tag Manager adds 434ms and costs ~$6/month
  • content.govdelivery.com adds 300ms and costs ~$4/month
  • Google Tag Manager adds 271ms and costs ~$4/month
  • Google Tag Manager adds 266ms and costs ~$4/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 649ms 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.cpsc.gov 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

Google Tag Manager takes 434ms 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

content.govdelivery.com takes 300ms 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 271ms 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 266ms 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

72% of Google Tag Manager'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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