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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
23
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.
100
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.

7.53 s

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

8.65 s

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

638 ms

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

0.404

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

8.11 s

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

17.56 s

Page Load Progression

479 ms
958 ms
1.4 s
1.9 s
2.4 s
2.9 s
3.4 s
3.8 s
Checks
17
7 PASS 2 REVIEW 6 FIX
D
Page Weight Budget
Action
2.5 MB transferred, 127 requests
FIX
2.5 MB transferred, 127 requests
Warning::
Page weighs 4.4 MB (2.5 MB transferred)
Warning::
JavaScript is 1.5 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.5 MB
Info::
CSS is 665 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 665 KB
Warning::
127 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.53 g CO2 per page load
2.5 MB / 2.4 MB budget
2.5 MB transferred
127 requests
0.53 g CO2 per page load
JavaScript 1.5 MiB 61%
CSS 665.4 KiB 26%
Images 205.1 KiB 8%
Fonts 109.8 KiB 4%
Other 16.6 KiB 1%
HTML 10.8 KiB 0%
Other 597 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

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 (2.5 MiB of 2.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
3392ms total JS execution
FIX
3392ms total JS execution
Warning::
https://www.noaa.gov/: 1072ms CPU time
Warning::
Unattributable: 670ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-FVJX...: 313ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 311ms CPU time
Warning::
https://touchpoints.app.cloud.gov/touchpoints/1f16...: 251ms CPU time
Warning::
Third-party scripts: 3392ms (100% of total)

Main Thread Breakdown

Script Evaluation 33% Style & Layout 26% Other 22% Script Parsing & Compilation 13% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://www.noaa.gov/1072ms14ms1ms3rd
Unattributable670ms8ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-FVJXY24VSZ313ms255ms55ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L311ms255ms54ms3rd
https://touchpoints.app.cloud.gov/touchpoints/1f162941.js251ms79ms57ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L217ms160ms54ms3rd
https://siteimproveanalytics.com/js/siteanalyze_6294131.js174ms121ms51ms3rd
https://www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.194ms68ms11ms3rd
https://dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js86ms74ms7ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64f085ms29ms56ms3rd

Showing top 10 of 12 scripts

F
JS Bundles
Action
61 scripts, 810 KB unused
FIX
61 scripts, 810 KB unused
Warning::
https://www.noaa.gov/themes/custom/noaa_guswds/dis...: 125 KB unused (99%)
Consider code splitting or tree shaking to reduce unused code.
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.noaa.gov/modules/custom/noaa_weather/j...: 103 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.noaa.gov/modules/custom/noaa_weather/j...: unminified — 58 KB could be saved
Warning::
https://siteimproveanalytics.com/js/siteanalyze_62...: 67 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MNK...: 64 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 810 KB
810 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.noaa.gov/themes/custom/noaa_guswds/dist/js/common.js?tdkj91126 KB125 KB (99%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64f0147 KB106 KB (72%)✓3rd
https://www.noaa.gov/modules/custom/noaa_weather/js/handlebars-v4.0.4.js?tdkj91156 KB103 KB (66%)✗3rd
https://siteimproveanalytics.com/js/siteanalyze_6294131.js105 KB67 KB (64%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L128 KB64 KB (50%)✓3rd
https://www.noaa.gov/libraries/owlcarousel2/dist/owl.carousel.js?tdkj9188 KB63 KB (72%)✗3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147 KB63 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-FVJXY24VSZ148 KB60 KB (41%)✓3rd
https://www.noaa.gov/core/assets/vendor/jquery/jquery.min.js?v=3.7.186 KB43 KB (50%)✓3rd
https://www.noaa.gov/core/misc/ajax.js?v=10.6.565 KB41 KB (64%)✗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
127 resources · 2.5 MB · 810 KB savings available
FIX
127 resources · 2.5 MB · 810 KB savings available
Warning::
Page weight 1.5 MB over 1MB target
Got: 2.5 MB Expected: ≤ 1 MB
Info::
~810 KB of savings available
Warning::
126 third-party resources (100% of weight)
Info::
1 resources over 200KB
127 resources · 2.5 MiB · 126 third-party 1.5 MiB over 1MB target
JavaScript 61% · 1.5 MiB
CSS 26% · 665.4 KiB
Image 9% · 221.4 KiB
Font 4% · 109.8 KiB
Document 0% · 11.1 KiB
Other 0% · 597 B

~810.0 KiB of savings available

Remove unused JavaScript: 810.0 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
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://touchpoints.app.cloud.gov/img/us_flag_smal... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.noaa.gov/themes/custom/noaa_guswds/dis... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cg-1b082c1b-3db7-477f-9ca5-bd51a786b41e.s3... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.noaa.gov/themes/custom/noaa_guswds/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 205 KB
0 oversized -0 KB
10 legacy format
4 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

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
5 fonts (110 KB)
PASS
5 fonts (110 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

110 KB total

Render-blocking

0

of 5

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 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 7.5 s LCP 8.7 shttps://fonts.gstatic.com/s/nunitosans/v19/pe0TMImSLYBIv1o4X1M8ce2xCx3yop4tQpF_MeTm0lfGWVpNn64CL7U8upHZIbMV51Q42ptCp7t1R-tQKr51.woff2pe0TMImSLYBIv1o4X1M8ce2... https://fonts.gstatic.com/s/nunitosans/v19/pe0TMImSLYBIv1o4X1M8ce2xCx3yop4tQpF_MeTm0lfGWVpNn64CL7U8upHZIbMV51Q42ptCp7t1R-tQKr51.woff2 — 30.3 KiB — 11 ms — font-display: swaphttps://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/fb071d5f975f08dc7fb2.wofffb071d5f975f08dc7fb2.woff https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/fb071d5f975f08dc7fb2.woff — 6.5 KiB — 212 ms — font-display: swaphttps://fonts.gstatic.com/s/nunitosans/v19/pe0RMImSLYBIv1o4X1M8cce4OdVisMz5nZRqy6cmmmU3t2FQWEAEOvV9wNvrwlNstMKW3Y6K5WMwd-laLZx3lE4.woff2pe0RMImSLYBIv1o4X1M8cce... https://fonts.gstatic.com/s/nunitosans/v19/pe0RMImSLYBIv1o4X1M8cce4OdVisMz5nZRqy6cmmmU3t2FQWEAEOvV9wNvrwlNstMKW3Y6K5WMwd-laLZx3lE4.woff2 — 32.2 KiB — 16 ms — font-display: swaphttps://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/e7bccfa631a0017f31da.woff2e7bccfa631a0017f31da.woff2 https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/e7bccfa631a0017f31da.woff2 — 20.5 KiB — 134 ms — font-display: swaphttps://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/4a1efbe82eaa84ff89ed.woff24a1efbe82eaa84ff89ed.woff2 https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/4a1efbe82eaa84ff89ed.woff2 — 20.3 KiB — 127 ms — font-display: swap
pe0TMImSLYBIv1o4X1M8ce2... woff2 swap
Size 30 KB
Load time 11 ms
Start 2.5 s
Risk FOUT — text flashes from fallback to web font
fb071d5f975f08dc7fb2.woff woff swap
Size 7 KB
Load time 212 ms
Start 2.5 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
pe0RMImSLYBIv1o4X1M8cce... woff2 swap
Size 32 KB
Load time 16 ms
Start 2.5 s
Risk FOUT — text flashes from fallback to web font
e7bccfa631a0017f31da.woff2 woff2 swap
Size 21 KB
Load time 134 ms
Start 3.7 s
Risk FOUT — text flashes from fallback to web font
4a1efbe82eaa84ff89ed.woff2 woff2 swap
Size 20 KB
Load time 127 ms
Start 3.7 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 ~2 KB and ~4 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
3 hints, 0 missing preconnects
PASS
3 hints, 0 missing preconnects
Info::
Page uses 3 resource hint(s)

Current Resource Hints

preconnect
2
preload
1
dns-prefetch
—
prefetch
—

3 resource hints configured

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
127 requests over 5046ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 7.5 s LCP 8.7 shttps://noaa.gov// https://noaa.gov/ — 301 — 307 B — 800 ms — http/1.1https://www.noaa.gov/www.noaa.gov/ https://www.noaa.gov/ — 200 — 10.8 KiB — 741 ms — h2https://fonts.googleapis.com/css2?family=Merriweather:ital,wght@0,300;0,400;0,700;0,900;1,300;1,400;1,700;1,900&family=Nunito+Sans:ital,wght@0,200;0,300;0,400;0,600;0,700;0,800;0,900;1,200;1,300;1,400;1,600;1,700;1,800;1,900&family=Open+Sans:ital,wght@0,300;0,400;0,600;0,700;0,800;1,300;1,400;1,600;1,700;1,800&display=swapfonts.googleapis.com/css2?family=Me... https://fonts.googleapis.com/css2?family=Merriweather:ital,wght@0,300;0,400;0,700;0,900;1,300;1,400;1,700;1,900&family=Nunito+Sans:ital,wght@0,200;0,300;0,400;0,600;0,700;0,800;0,900;1,200;1,300;1,400;1,600;1,700;1,800;1,900&family=Open+Sans:ital,wght@0,300;0,400;0,600;0,700;0,800;1,300;1,400;1,600;1,700;1,800&display=swap — 200 — 3.5 KiB — 147 ms — h2https://www.noaa.gov/core/misc/components/progress.module.css?tdkj91www.noaa.gov/core/misc/components/p... https://www.noaa.gov/core/misc/components/progress.module.css?tdkj91 — 200 — 1.2 KiB — 129 ms — h2https://www.noaa.gov/core/misc/components/ajax-progress.module.css?tdkj91www.noaa.gov/core/misc/components/a... https://www.noaa.gov/core/misc/components/ajax-progress.module.css?tdkj91 — 200 — 1.3 KiB — 137 ms — h2https://www.noaa.gov/core/modules/system/css/components/fieldgroup.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/fieldgroup.module.css?tdkj91 — 200 — 476 B — 133 ms — h2https://www.noaa.gov/core/modules/system/css/components/container-inline.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/container-inline.module.css?tdkj91 — 200 — 656 B — 141 ms — h2https://www.noaa.gov/core/modules/system/css/components/details.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/details.module.css?tdkj91 — 200 — 510 B — 137 ms — h2https://www.noaa.gov/core/modules/system/css/components/item-list.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/item-list.module.css?tdkj91 — 200 — 669 B — 134 ms — h2https://www.noaa.gov/core/modules/system/css/components/js.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/js.module.css?tdkj91 — 200 — 1.0 KiB — 142 ms — h2https://www.noaa.gov/core/modules/system/css/components/nowrap.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/nowrap.module.css?tdkj91 — 200 — 478 B — 138 ms — h2https://www.noaa.gov/core/modules/system/css/components/position-container.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/position-container.module.css?tdkj91 — 200 — 475 B — 172 ms — h2https://www.noaa.gov/core/modules/system/css/components/reset-appearance.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/reset-appearance.module.css?tdkj91 — 200 — 631 B — 254 ms — h2https://www.noaa.gov/core/modules/system/css/components/resize.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/resize.module.css?tdkj91 — 200 — 652 B — 252 ms — h2https://www.noaa.gov/core/modules/system/css/components/system-status-counter.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/system-status-counter.css?tdkj91 — 200 — 1.1 KiB — 257 ms — h2https://www.noaa.gov/core/modules/system/css/components/system-status-report-counters.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/system-status-report-counters.css?tdkj91 — 200 — 940 B — 255 ms — h2https://www.noaa.gov/core/modules/system/css/components/system-status-report-general-info.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/system-status-report-general-info.css?tdkj91 — 200 — 637 B — 262 ms — h2https://www.noaa.gov/core/modules/system/css/components/tablesort.module.css?tdkj91www.noaa.gov/core/modules/system/cs... https://www.noaa.gov/core/modules/system/css/components/tablesort.module.css?tdkj91 — 200 — 747 B — 259 ms — h2https://www.noaa.gov/core/modules/views/css/views.module.css?tdkj91www.noaa.gov/core/modules/views/css... https://www.noaa.gov/core/modules/views/css/views.module.css?tdkj91 — 200 — 817 B — 257 ms — h2https://www.noaa.gov/modules/contrib/ckeditor5_plugin_pack/modules/ckeditor5_plugin_pack_indent_block/css/indent-block.css?tdkj91www.noaa.gov/modules/contrib/ckedit... https://www.noaa.gov/modules/contrib/ckeditor5_plugin_pack/modules/ckeditor5_plugin_pack_indent_block/css/indent-block.css?tdkj91 — 200 — 1.6 KiB — 265 ms — h2https://www.noaa.gov/modules/custom/noaa_core/css/touchpoints.css?tdkj91www.noaa.gov/modules/custom/noaa_co... https://www.noaa.gov/modules/custom/noaa_core/css/touchpoints.css?tdkj91 — 200 — 449 B — 261 ms — h2https://www.noaa.gov/modules/contrib/paragraphs/css/paragraphs.unpublished.css?tdkj91www.noaa.gov/modules/contrib/paragr... https://www.noaa.gov/modules/contrib/paragraphs/css/paragraphs.unpublished.css?tdkj91 — 200 — 438 B — 654 ms — h2https://www.noaa.gov/themes/custom/noaa_guswds/dist/css/back-to-top.css?tdkj91www.noaa.gov/themes/custom/noaa_gus... https://www.noaa.gov/themes/custom/noaa_guswds/dist/css/back-to-top.css?tdkj91 — 200 — 17.7 KiB — 765 ms — 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https://touchpoints.app.cloud.gov/img/usa-icons/launch.svg — 200 — 610 B — 785 ms — h2https://cg-1b082c1b-3db7-477f-9ca5-bd51a786b41e.s3-us-gov-west-1.amazonaws.com/uploads/form/logo/3708/logo_square_NOAA-logo.jpgcg-1b082c1b-3db7-477f-9ca5-bd51a786... https://cg-1b082c1b-3db7-477f-9ca5-bd51a786b41e.s3-us-gov-west-1.amazonaws.com/uploads/form/logo/3708/logo_square_NOAA-logo.jpg — 200 — 39.1 KiB — 1.2 s — http/1.1https://touchpoints.app.cloud.gov/img/us_flag_small.pngtouchpoints.app.cloud.gov/img/us_fl... https://touchpoints.app.cloud.gov/img/us_flag_small.png — 200 — 516 B — 203 ms — h2https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/e7bccfa631a0017f31da.woff2www.noaa.gov/themes/custom/noaa_gus... https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/e7bccfa631a0017f31da.woff2 — 200 — 20.5 KiB — 134 ms — h2https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/4a1efbe82eaa84ff89ed.woff2www.noaa.gov/themes/custom/noaa_gus... https://www.noaa.gov/themes/custom/noaa_guswds/dist/fonts/4a1efbe82eaa84ff89ed.woff2 — 200 — 20.3 KiB — 127 ms — h2https://www.noaa.gov/themes/custom/noaa_guswds/favicon.icowww.noaa.gov/themes/custom/noaa_gus... https://www.noaa.gov/themes/custom/noaa_guswds/favicon.ico — 200 — 4.6 KiB — 116 ms — h2
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 3392ms · 1474KB · $45/mo
www.noaa.gov
Other
Costly
Execution 1072ms
Transfer 11 KB
Monthly Cost $14/mo
Unattributable
Other
Costly
Execution 670ms
Transfer 0 KB
Monthly Cost $9/mo
Google Tag Manager
Tag Manager
Costly
Execution 313ms
Transfer 148 KB
Unused 41%
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 311ms
Transfer 147 KB
Unused 43%
Monthly Cost $4/mo
touchpoints.app.cloud.gov
Other
Costly
Execution 251ms
Transfer 80 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Costly
Execution 217ms
Transfer 128 KB
Unused 50%
Monthly Cost $3/mo
siteimproveanalytics.com
Other
Optional
Execution 174ms
Transfer 105 KB
Unused 64%
Monthly Cost $2/mo
www.noaa.gov
Other
Optional
Execution 94ms
Transfer 86 KB
Unused 50%
Monthly Cost $1/mo
dap.digitalgov.gov
Other
Optional
Execution 86ms
Transfer 4 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 85ms
Transfer 147 KB
Unused 72%
Monthly Cost $1/mo
www.noaa.gov
Other
Optional
Execution 65ms
Transfer 1 KB
Monthly Cost $1/mo
www.noaa.gov
Other
Optional
Execution 54ms
Transfer 615 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.noaa.gov adds 1072ms and costs ~$14/month
  • Unattributable adds 670ms and costs ~$9/month
  • Google Tag Manager adds 313ms and costs ~$4/month
  • Google Tag Manager adds 311ms and costs ~$4/month
  • touchpoints.app.cloud.gov adds 251ms and costs ~$3/month
  • Google Tag Manager adds 217ms 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

www.noaa.gov takes 1072ms 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 670ms 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 313ms 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 311ms 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

touchpoints.app.cloud.gov takes 251ms 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 217ms 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

64% of siteimproveanalytics.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

50% of www.noaa.gov'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

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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