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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
61
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
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.

2.42 s

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

2.86 s

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

0 ms

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

0.180

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

2.84 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.

2.88 s

Page Load Progression

442 ms
884 ms
1.3 s
1.8 s
2.2 s
2.7 s
3.1 s
3.5 s
Checks
15
5 PASS 3 REVIEW 5 FIX
D
Page Weight Budget
Action
2.6 MB transferred, 125 requests
FIX
2.6 MB transferred, 125 requests
Warning::
Page weighs 4.4 MB (2.6 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::
125 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.54 g CO2 per page load
2.6 MB / 2.4 MB budget
2.6 MB transferred
125 requests
0.54 g CO2 per page load
JavaScript 1.5 MiB 61%
CSS 665.4 KiB 25%
Images 226.9 KiB 9%
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 (2.6 MiB of 2.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
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
125 resources · 2.6 MB · 810 KB savings available
FIX
125 resources · 2.6 MB · 810 KB savings available
Warning::
Page weight 1.6 MB over 1MB target
Got: 2.6 MB Expected: ≤ 1 MB
Info::
~810 KB of savings available
Warning::
124 third-party resources (100% of weight)
Info::
1 resources over 200KB
125 resources · 2.6 MiB · 124 third-party 1.6 MiB over 1MB target
JavaScript 61% · 1.5 MiB
CSS 25% · 665.4 KiB
Image 9% · 243.2 KiB
Font 4% · 109.8 KiB
Document 0% · 11.1 KiB
Other 0% · 597 B

~810.1 KiB of savings available

Remove unused JavaScript: 810.1 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
17 images, 0 KB saveable
REVIEW
17 images, 0 KB saveable
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://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/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
17 images 227 KB
0 oversized -0 KB
9 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

B
JS Execution Cost
776ms total JS execution
REVIEW
776ms total JS execution
Warning::
https://www.noaa.gov/: 306ms CPU time
Info::
Unattributable: 193ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-FVJX...: 78ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 78ms CPU time
Info::
https://touchpoints.app.cloud.gov/touchpoints/1f16...: 67ms CPU time
Warning::
Third-party scripts: 776ms (100% of total)

Main Thread Breakdown

Script Evaluation 31% Style & Layout 26% Other 24% Script Parsing & Compilation 12% Parse HTML & CSS 4% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.noaa.gov/306ms4ms0ms3rd
Unattributable193ms2ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-FVJXY24VSZ78ms63ms14ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L78ms63ms14ms3rd
https://touchpoints.app.cloud.gov/touchpoints/1f162941.js67ms20ms20ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MNK3D2L54ms41ms12ms3rd
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 FCP 2.4 s LCP 2.9 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 — 27 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 — 174 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 — 65 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 — 121 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 — 121 ms — font-display: swap
pe0TMImSLYBIv1o4X1M8ce2... woff2 swap
Size 30 KB
Load time 27 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
fb071d5f975f08dc7fb2.woff woff swap
Size 7 KB
Load time 174 ms
Start 2.1 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 65 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
e7bccfa631a0017f31da.woff2 woff2 swap
Size 21 KB
Load time 121 ms
Start 3.4 s
Risk FOUT — text flashes from fallback to web font
4a1efbe82eaa84ff89ed.woff2 woff2 swap
Size 20 KB
Load time 121 ms
Start 3.4 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
125 requests over 4601ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.4 s LCP 2.9 shttps://noaa.gov// https://noaa.gov/ — 301 — 307 B — 665 ms — http/1.1https://www.noaa.gov/www.noaa.gov/ https://www.noaa.gov/ — 200 — 10.8 KiB — 543 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 — 3.9 KiB — 136 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 — 132 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 — 133 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 — 477 B — 136 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 — 657 B — 142 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 — 138 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 — 140 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 — 477 B — 142 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 — 476 B — 143 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 — 632 B — 242 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 — 243 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 — 245 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 — 938 B — 243 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 — 248 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 — 249 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 — 816 B — 245 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 — 250 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 — 447 B — 284 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 — 437 B — 253 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 — 281 ms — h2https://www.noaa.gov/libraries/tooltipster/dist/css/tooltipster.bundle.min.css?tdkj91www.noaa.gov/libraries/tooltipster/... https://www.noaa.gov/libraries/tooltipster/dist/css/tooltipster.bundle.min.css?tdkj91 — 200 — 6.7 KiB — 250 ms — h2https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,300i,400,400i,600,600i,700,700i&display=swapfonts.googleapis.com/css?family=Sou... https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,300i,400,400i,600,600i,700,700i&display=swap — 200 — 1.2 KiB — 139 ms — h2https://www.noaa.gov/libraries/owlcarousel2/dist/assets/owl.carousel.css?tdkj91www.noaa.gov/libraries/owlcarousel2... https://www.noaa.gov/libraries/owlcarousel2/dist/assets/owl.carousel.css?tdkj91 — 200 — 5.0 KiB — 255 ms — h2https://www.noaa.gov/libraries/owlcarousel2/dist/assets/owl.theme.default.css?tdkj91www.noaa.gov/libraries/owlcarousel2... https://www.noaa.gov/libraries/owlcarousel2/dist/assets/owl.theme.default.css?tdkj91 — 200 — 1.7 KiB — 257 ms — 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Optional
Execution 78ms
Transfer 148 KB
Unused 41%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 78ms
Transfer 147 KB
Unused 43%
Monthly Cost $1/mo
touchpoints.app.cloud.gov
Other
Optional
Execution 67ms
Transfer 80 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 54ms
Transfer 128 KB
Unused 50%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.noaa.gov adds 306ms 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

www.noaa.gov takes 306ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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