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Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
6
REVIEW
7
PASS
11
INFO
3

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

Mobile Desktop
37
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.

7.62 s

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

26.22 s

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

874 ms

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

0.004

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

7.93 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.

26.65 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
27
11 PASS 7 REVIEW 6 FIX
F
Page Weight Budget
Action
5.0 MB transferred, 119 requests
FIX
5.0 MB transferred, 119 requests
Critical::
Page weighs 8.2 MB (5.0 MB transferred)
Warning::
Images are 3.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.1 MB
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Info::
Fonts are 524 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 524 KB
Info::
CSS is 227 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 227 KB
Warning::
119 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.0 g CO2 per page load
5.0 MB / 2.4 MB budget
5.0 MB transferred
119 requests
1.0 g CO2 per page load
Images 3.1 MiB 62%
JavaScript 1.2 MiB 23%
Fonts 524.3 KiB 10%
CSS 227.2 KiB 4%
HTML 17.9 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 (5.0 MiB of 5.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
3141ms total JS execution
FIX
3141ms total JS execution
Warning::
https://www.googletagmanager.com/gtag/js?id=G-55LV...: 566ms CPU time
Warning::
Unattributable: 545ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-XM65...: 418ms CPU time
Warning::
https://www.cpsc.gov/: 349ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 255ms CPU time
Warning::
Third-party scripts: 2596ms (83% of total)

Main Thread Breakdown

Script Evaluation 41% Other 23% Style & Layout 20% Script Parsing & Compilation 10% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V566ms242ms50ms3rd
Unattributable545ms12ms0ms1st
https://www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c&gtm=4e6a91418ms298ms73ms3rd
https://www.cpsc.gov/349ms11ms4ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e6a91255ms218ms36ms3rd
https://content.govdelivery.com/overlay/js/11021.js209ms146ms28ms3rd
https://cdn.jsdelivr.net/npm/@uswds/uswds@3.4.1/dist/js/uswds.min.js191ms38ms9ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-T559BS6V132ms95ms23ms3rd
https://www.cpsc.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.1114ms75ms9ms3rd
https://dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js86ms83ms1ms3rd

Showing top 10 of 14 scripts

F
JS Bundles
Action
50 scripts, 561 KB unused
FIX
50 scripts, 561 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-55LV...: 121 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 116 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-XM65...: 73 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-55LV...: 73 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 69 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 561 KB
561 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V&cx=c&gtm=4e6a91178 KB121 KB (68%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L162 KB116 KB (72%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-XM65T6P0GR&cx=c&gtm=4e6a91179 KB73 KB (41%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-55LVJ78J3V178 KB73 KB (41%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e6a91162 KB69 KB (43%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-T559BS6V89 KB51 KB (58%)✓3rd
https://content.govdelivery.com/overlay/js/11021.js75 KB36 KB (49%)✓3rd
https://static.addtoany.com/menu/modules/core.iho16r34.js26 KB21 KB (81%)✓3rd
https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/resizable-min.js?v=1.13.25 KB—✓3rd
https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/dialog-min.js?v=1.13.24 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

F
Page Weight Inventory
Action
119 resources · 5.0 MB · 561 KB savings available
FIX
119 resources · 5.0 MB · 561 KB savings available
Warning::
Page weight 5.0 MB exceeds 1 MB target by 4.0 MB
Got: 5.0 MB Expected: ≤ 1 MB
Info::
~561 KB of savings available
Warning::
118 third-party resources (100% of weight)
Info::
3 resources over 200KB
119 resources · 5.0 MiB · 118 third-party 4.0 MiB over 1MB target
Image 62% · 3.1 MiB
JavaScript 23% · 1.2 MiB
Font 10% · 524.3 KiB
CSS 4% · 227.2 KiB
Document 0% · 17.9 KiB
Other 0% · 128 B

~560.6 KiB of savings available

Remove unused JavaScript: 560.6 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://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/2026-08/squishy-g... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.cpsc.gov/s3fs-public/ocoopa-1.jpg?Vers... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
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://www.cpsc.gov/s3fs-public/SafetyAlert_5101_... 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/sites/default/themes/cpsc/ass... 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.
19 images 3.1 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
Document Compression
Action
Document response served uncompressed
REVIEW
Document response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
B
JavaScript Blocking
1 JS blocking issue(s) detected
REVIEW
1 JS blocking issue(s) detected
Warning::
43 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
B
CSS Performance Depth
2 CSS depth issue(s) detected
REVIEW
2 CSS depth issue(s) detected
Warning::
35 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Info::
1 `@import` rule(s) in inline `<style>` blocks -- chains an extra round-trip
Each `@import` in CSS forces a serial dependency: the parent stylesheet must download and parse before the browser even knows which URL to fetch next. This used to be catastrophic on HTTP/1.1; HTTP/2 and HTTP/3 multiplexing make it less painful but still strictly worse than declaring `<link rel="stylesheet">` siblings. Replace `@import url(...)` with `<link rel="stylesheet" href="...">` in HTML so the browser discovers and fetches in parallel.
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 (524 KB)
PASS
10 fonts (524 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

524 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 FCP 7.6 s LCP 26.2 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 — 20.8 KiB — 42 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 — 20.6 KiB — 47 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 — 16.7 KiB — 34 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 — 16.7 KiB — 47 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 — 29 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 — 155 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 — 74.9 KiB — 22 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 — 29 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 — 123 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 — 55 ms — font-display: swap
sourcesanspro-regular-w... woff2 swap
Size 21 KB
Load time 42 ms
Start 705 ms
Risk FOUT — text flashes from fallback to web font
sourcesanspro-bold-webf... woff2 swap
Size 21 KB
Load time 47 ms
Start 705 ms
Risk FOUT — text flashes from fallback to web font
sourcesanspro-italic-we... woff2 swap
Size 17 KB
Load time 34 ms
Start 705 ms
Risk FOUT — text flashes from fallback to web font
sourcesanspro-bolditali... woff2 swap
Size 17 KB
Load time 47 ms
Start 705 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 107 KB
Load time 29 ms
Start 888 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
fa-solid-900.woff2 woff2 swap
Size 147 KB
Load time 155 ms
Start 888 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
fa-brands-400.woff2 woff2 swap
Size 75 KB
Load time 22 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
fa-solid-900.woff2 woff2 swap
Size 78 KB
Load time 29 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
flexslider-icon.woff woff swap
Size 1 KB
Load time 123 ms
Start 1.1 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 55 ms
Start 1.2 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+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Asset Compression
All 2 asset hosts use brotli
PASS
All 2 asset hosts use brotli
Info::
cdn.jsdelivr.net serves assets with brotli (assets: 6)
Got: cdn.jsdelivr.net (text/css)
Info::
www.googletagmanager.com serves assets with brotli (assets: 6)
Got: www.googletagmanager.com (application/javascript)
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
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
119 requests over 2223ms
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 FCP 7.6 s LCP 26.2 shttps://cpsc.gov// https://cpsc.gov/ — 301 — 128 B — 50 ms — h2https://www.cpsc.gov/www.cpsc.gov/ https://www.cpsc.gov/ — 200 — 16.9 KiB — 202 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 — 178.1 KiB — 275 ms — h2https://www.cpsc.gov/core/modules/system/css/components/align.module.css?tmt0ipwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/align.module.css?tmt0ip — 200 — 2.4 KiB — 390 ms — h2https://www.cpsc.gov/core/modules/system/css/components/fieldgroup.module.css?tmt0ipwww.cpsc.gov/core/modules/system/cs... https://www.cpsc.gov/core/modules/system/css/components/fieldgroup.module.css?tmt0ip — 200 — 2.3 KiB — 159 ms — 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h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/widgets/mouse-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/mouse-min.js?v=1.13.2 — 200 — 1.1 KiB — 202 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/data-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/data-min.js?v=1.13.2 — 200 — 361 B — 239 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/plugin-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/plugin-min.js?v=1.13.2 — 200 — 344 B — 199 ms — h3https://www.cpsc.gov/modules/contrib/jquery_ui/assets/vendor/jquery.ui/ui/safe-active-element-min.js?v=1.13.2www.cpsc.gov/modules/contrib/jquery... 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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 — 425 B — 462 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 — 458 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 — 622 B — 442 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 — 463 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 — 387 B — 537 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 — 401 B — 232 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 — 447 ms — 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h3https://www.cpsc.gov/sites/default/libraries/flexslider/jquery.flexslider-min.js?tmt0ipwww.cpsc.gov/sites/default/librarie... https://www.cpsc.gov/sites/default/libraries/flexslider/jquery.flexslider-min.js?tmt0ip — 200 — 6.5 KiB — 539 ms — h3https://www.cpsc.gov/modules/contrib/flexslider/dist/js/flexslider.load.min.js?tmt0ipwww.cpsc.gov/modules/contrib/flexsl... https://www.cpsc.gov/modules/contrib/flexslider/dist/js/flexslider.load.min.js?tmt0ip — 200 — 445 B — 305 ms — h3https://www.cpsc.gov/modules/contrib/google_analytics/js/google_analytics.js?v=10.6.17www.cpsc.gov/modules/contrib/google... https://www.cpsc.gov/modules/contrib/google_analytics/js/google_analytics.js?v=10.6.17 — 200 — 1.9 KiB — 164 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 — 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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
83% of JavaScript execution is third-party
First-party Third-party 2596ms · 1159KB · $34/mo
Google Tag Manager
Tag Manager
Costly
Execution 566ms
Transfer 178 KB
Unused 41%
Monthly Cost $8/mo
Google Tag Manager
Tag Manager
Costly
Execution 418ms
Transfer 179 KB
Unused 41%
Monthly Cost $6/mo
www.cpsc.gov
Other
Costly
Execution 349ms
Transfer 17 KB
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 255ms
Transfer 162 KB
Unused 43%
Monthly Cost $3/mo
content.govdelivery.com
Other
Costly
Execution 209ms
Transfer 75 KB
Unused 49%
Monthly Cost $3/mo
jsDelivr
CDN
Optional
Execution 191ms
Transfer 26 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 132ms
Transfer 89 KB
Unused 58%
Monthly Cost $2/mo
www.cpsc.gov
Other
Optional
Execution 114ms
Transfer 32 KB
Monthly Cost $2/mo
dap.digitalgov.gov
Other
Optional
Execution 86ms
Transfer 4 KB
Monthly Cost $1/mo
www.cpsc.gov
Other
Optional
Execution 77ms
Transfer 1 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 71ms
Transfer 178 KB
Unused 68%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 64ms
Transfer 162 KB
Unused 72%
Monthly Cost $1/mo
www.cpsc.gov
Other
Optional
Execution 64ms
Transfer 58 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 566ms and costs ~$8/month
  • Google Tag Manager adds 418ms and costs ~$6/month
  • www.cpsc.gov adds 349ms and costs ~$5/month
  • Google Tag Manager adds 255ms and costs ~$3/month
  • content.govdelivery.com adds 209ms and costs ~$3/month

83% 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

Google Tag Manager takes 566ms 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 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

www.cpsc.gov takes 349ms 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 255ms 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 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

58% 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

68% 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

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

Image Optimization
19 images, 4296 KB total, 1570 KB wasted
INFO

Image Optimization Audit

Total Images

19

Total Size

4296 KB

Oversized

8

Wasted

1570 KB

10 missing dimensions 9 missing lazy loading
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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