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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
4
PASS
5
INFO
2

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

Mobile Desktop
75
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
83
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.

1.35 s

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

3.55 s

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

9 ms

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

0.000

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

1.53 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.

3.57 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
5 PASS 4 REVIEW 4 FIX
F
Page Weight Budget
Action
5.2 MB transferred, 84 requests
FIX
5.2 MB transferred, 84 requests
Critical::
Page weighs 7.9 MB (5.2 MB transferred)
Warning::
Images are 3.6 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.6 MB
Info::
Fonts are 1.0 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 1.0 MB
Info::
84 HTTP requests
Info::
Estimated 1.1 g CO2 per page load
5.2 MB / 2.4 MB budget
5.2 MB transferred
84 requests
1.1 g CO2 per page load
Images 3.6 MiB 69%
Fonts 1.0 MiB 20%
JavaScript 414.3 KiB 8%
CSS 149.2 KiB 3%
HTML 20.6 KiB 0%
Other 5.8 KiB 0%
Other 547 B 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

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

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 (5.2 MiB of 5.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
84 resources · 5.2 MB · 119 KB savings available
FIX
84 resources · 5.2 MB · 119 KB savings available
Warning::
Page weight 4.2 MB over 1MB target
Got: 5.2 MB Expected: ≤ 1 MB
Info::
~119 KB of savings available
Warning::
83 third-party resources (100% of weight)
Info::
3 resources over 200KB
84 resources · 5.2 MiB · 83 third-party 4.2 MiB over 1MB target
Image 69% · 3.6 MiB
Font 20% · 1.0 MiB
JavaScript 8% · 414.3 KiB
CSS 3% · 149.2 KiB
Document 0% · 20.6 KiB
Other 0% · 633 B

~119.4 KiB of savings available

Remove unused JavaScript: 119.4 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.nsa.gov/Portals/75/logos.png?ver=EYzGy... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.nsa.gov/portals/75/Homepage/ncm_logo.p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.nsa.gov/portals/75/Homepage/book.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.nsa.gov/DesktopModules/SharedLibrary/I... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.nsa.gov/portals/75/Homepage/mission_ic... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.nsa.gov/portals/75/Homepage/lightbulb.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.nsa.gov/portals/75/Homepage/business.p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
19 images 3.6 MB
0 oversized -0 KB
15 legacy format
7 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

B
JS Execution Cost
505ms total JS execution
REVIEW
505ms total JS execution
Info::
https://www.nsa.gov/: 194ms CPU time
Info::
Unattributable: 131ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 102ms CPU time
Info::
https://www.nsa.gov/Resources/libraries/jQuery/03_...: 78ms CPU time
Warning::
Third-party scripts: 505ms (100% of total)

Main Thread Breakdown

Script Evaluation 30% Other 30% Style & Layout 21% Script Parsing & Compilation 8% Parse HTML & CSS 7% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.nsa.gov/194ms6ms3ms3rd
Unattributable131ms2ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L102ms86ms14ms3rd
https://www.nsa.gov/Resources/libraries/jQuery/03_07_01/jquery.js?cdv=484078ms42ms3ms3rd
B
JS Bundles
27 scripts, 119 KB unused
REVIEW
27 scripts, 119 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 60 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.nsa.gov/Resources/libraries/jQuery-UI/...: 59 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 119 KB
119 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147 KB60 KB (41%)✓3rd
https://www.nsa.gov/Resources/libraries/jQuery-UI/01_13_03/jquery-ui.min.js?cdv=484067 KB59 KB (89%)✓3rd
https://www.nsa.gov/js/dnn.modalpopup.js?cdv=48404 KB—✓3rd
https://www.nsa.gov/DesktopModules/SharedLibrary/ValidatedPlugins/dompurify//purify.min.js?cdv=48409 KB—✓3rd
https://www.nsa.gov/Resources/libraries/HoverIntent/01_10_01/jquery.hoverIntent.min.js?cdv=48401 KB—✓3rd
https://www.nsa.gov/Portals/75/Homepage/wow.js4 KB—✓3rd
https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/GoogleAnalytics/Universal-Federated-Analytics-8.7.js?agency=DOD&subagency=NSA&sitetopic=dma.web&dclink=true16 KB—✗3rd
https://www.nsa.gov/WebResource.axd?d=pynGkmcFUV0JwCJq02pBM5hu37VK52ATsgnYFxg-XxWGX0LYJ3mbwraaWwM1&t=6389016277208987735 KB—✓3rd
https://www.nsa.gov/ScriptResource.axd?d=NJmAwtEo3IrZZmhJbgLN7n1FwhuTJbajvmySO9QBr6i6zzzRyl6QF-8j0H4S-sD0hixqDz0d-Vujdi3MvDRr6hXBsdDKcKa7NksbEQY7g6k3ZSEstlgnEP2q9p_Nl5yEr2VDGw2&t=32e5dfca25 KB—✓3rd
https://www.nsa.gov/ScriptResource.axd?d=dwY9oWetJoIvUjxxH4p9bCJMmUDv-qgwxoAeD0W0JDFhvrbEUP41TpnqX4tfMCTuBVtMAY5BK7CMtCDqlACCH4GKtxFEd7YXvMw-KQEYwFXFhcauGEnIF2TD_CxRkDQLLPMbFuQe5XPVhKch0&t=32e5dfca10 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

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 (1052 KB)
PASS
10 fonts (1052 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

1052 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 1.0 s 2.0 s 3.0 s FCP 1.3 s LCP 3.6 shttps://www.nsa.gov/Portals/75/Fonts/Roboto-Thin.ttfRoboto-Thin.ttf https://www.nsa.gov/Portals/75/Fonts/Roboto-Thin.ttf — 84.8 KiB — 72 ms — font-display: swaphttps://www.nsa.gov/Desktopmodules/SharedLibrary/ValidatedPlugins/font-awesome6/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://www.nsa.gov/Desktopmodules/SharedLibrary/ValidatedPlugins/font-awesome6/webfonts/fa-solid-900.woff2 — 146.9 KiB — 26 ms — font-display: swaphttps://www.nsa.gov/Portals/75/Fonts/Roboto-Light.ttfRoboto-Light.ttf https://www.nsa.gov/Portals/75/Fonts/Roboto-Light.ttf — 86.3 KiB — 50 ms — font-display: swaphttps://www.nsa.gov/Portals/75/Fonts/Teko-Bold.ttfTeko-Bold.ttf https://www.nsa.gov/Portals/75/Fonts/Teko-Bold.ttf — 109.7 KiB — 33 ms — font-display: swaphttps://www.nsa.gov/Portals/75/Fonts/Teko-Medium.ttfTeko-Medium.ttf https://www.nsa.gov/Portals/75/Fonts/Teko-Medium.ttf — 113.7 KiB — 38 ms — font-display: swaphttps://www.nsa.gov/Portals/75/Fonts/Teko-SemiBold.ttfTeko-SemiBold.ttf https://www.nsa.gov/Portals/75/Fonts/Teko-SemiBold.ttf — 115.5 KiB — 57 ms — font-display: swaphttps://www.nsa.gov/Portals/75/Fonts/Teko-Regular.ttfTeko-Regular.ttf https://www.nsa.gov/Portals/75/Fonts/Teko-Regular.ttf — 113.4 KiB — 67 ms — font-display: swaphttps://www.nsa.gov/Portals/75/Fonts/Roboto-Bold.ttfRoboto-Bold.ttf https://www.nsa.gov/Portals/75/Fonts/Roboto-Bold.ttf — 86.9 KiB — 111 ms — font-display: swaphttps://www.nsa.gov/Portals/75/Fonts/Roboto-Black.ttfRoboto-Black.ttf https://www.nsa.gov/Portals/75/Fonts/Roboto-Black.ttf — 87.3 KiB — 67 ms — font-display: swaphttps://www.nsa.gov/Desktopmodules/SharedLibrary/ValidatedPlugins/font-awesome6/webfonts/fa-brands-400.woff2fa-brands-400.woff2 https://www.nsa.gov/Desktopmodules/SharedLibrary/ValidatedPlugins/font-awesome6/webfonts/fa-brands-400.woff2 — 107.6 KiB — 15 ms — font-display: swap
Roboto-Thin.ttf ttf swap
Size 85 KB
Load time 72 ms
Start 465 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fa-solid-900.woff2 woff2 swap
Size 147 KB
Load time 26 ms
Start 465 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
Roboto-Light.ttf ttf swap
Size 86 KB
Load time 50 ms
Start 466 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Teko-Bold.ttf ttf swap
Size 110 KB
Load time 33 ms
Start 467 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Teko-Medium.ttf ttf swap
Size 114 KB
Load time 38 ms
Start 467 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Teko-SemiBold.ttf ttf swap
Size 116 KB
Load time 57 ms
Start 468 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Teko-Regular.ttf ttf swap
Size 113 KB
Load time 67 ms
Start 468 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Roboto-Bold.ttf ttf swap
Size 87 KB
Load time 111 ms
Start 468 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Roboto-Black.ttf ttf swap
Size 87 KB
Load time 67 ms
Start 469 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fa-brands-400.woff2 woff2 swap
Size 108 KB
Load time 15 ms
Start 559 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
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 ~593 KB and ~1186 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
84 requests over 857ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.3 s LCP 3.6 shttps://nsa.gov// https://nsa.gov/ — 301 — 86 B — 20 ms — h2https://www.nsa.gov/www.nsa.gov/ https://www.nsa.gov/ — 200 — 20.6 KiB — 74 ms — h2https://www.nsa.gov/Portals/75/Homepage/animate.csswww.nsa.gov/Portals/75/Homepage/ani... https://www.nsa.gov/Portals/75/Homepage/animate.css — 200 — 6.2 KiB — 78 ms — h2https://use.fontawesome.com/releases/latest/js/all.jsuse.fontawesome.com/releases/latest... https://use.fontawesome.com/releases/latest/js/all.js — 404 — 424 B — 58 ms — h2https://www.nsa.gov/Resources/Shared/stylesheets/dnndefault/7.0.0/default.css?cdv=4840www.nsa.gov/Resources/Shared/styles... https://www.nsa.gov/Resources/Shared/stylesheets/dnndefault/7.0.0/default.css?cdv=4840 — 200 — 16.5 KiB — 76 ms — h2https://www.nsa.gov/DesktopModules/PhotoDashboard/module.css?cdv=4840www.nsa.gov/DesktopModules/PhotoDas... https://www.nsa.gov/DesktopModules/PhotoDashboard/module.css?cdv=4840 — 200 — 652 B — 40 ms — h2https://www.nsa.gov/DesktopModules/Announcements/module.css?cdv=4840www.nsa.gov/DesktopModules/Announce... https://www.nsa.gov/DesktopModules/Announcements/module.css?cdv=4840 — 200 — 514 B — 41 ms — h2https://www.nsa.gov/DesktopModules/ArticleCSDashboard/module.css?cdv=4840www.nsa.gov/DesktopModules/ArticleC... https://www.nsa.gov/DesktopModules/ArticleCSDashboard/module.css?cdv=4840 — 200 — 12.5 KiB — 153 ms — h2https://www.nsa.gov/DesktopModules/AccordionMenu/CSS/jumpMenu.css?cdv=4840www.nsa.gov/DesktopModules/Accordio... https://www.nsa.gov/DesktopModules/AccordionMenu/CSS/jumpMenu.css?cdv=4840 — 200 — 619 B — 42 ms — h2https://www.nsa.gov/DesktopModules/AccordionMenu/CSS/Templates/dod.css?cdv=4840www.nsa.gov/DesktopModules/Accordio... https://www.nsa.gov/DesktopModules/AccordionMenu/CSS/Templates/dod.css?cdv=4840 — 200 — 1.3 KiB — 44 ms — h2https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/Bootstrap/css/bootstrap.min.css?cdv=4840www.nsa.gov/Desktopmodules/SharedLi... https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/Bootstrap/css/bootstrap.min.css?cdv=4840 — 200 — 19.5 KiB — 54 ms — h2https://www.nsa.gov/Portals/_default/skins/dod2/skin.css?cdv=4840www.nsa.gov/Portals/_default/skins/... https://www.nsa.gov/Portals/_default/skins/dod2/skin.css?cdv=4840 — 200 — 10.2 KiB — 48 ms — h2https://www.nsa.gov/Portals/_default/Containers/DOD2/container.css?cdv=4840www.nsa.gov/Portals/_default/Contai... https://www.nsa.gov/Portals/_default/Containers/DOD2/container.css?cdv=4840 — 200 — 1021 B — 49 ms — h2https://www.nsa.gov/Portals/75/portal.css?cdv=4840www.nsa.gov/Portals/75/portal.css?c... https://www.nsa.gov/Portals/75/portal.css?cdv=4840 — 200 — 13.6 KiB — 94 ms — h2https://www.nsa.gov/Portals/_default/skins/dod2/assets/dist/css/full-width.min.css?cdv=4840www.nsa.gov/Portals/_default/skins/... https://www.nsa.gov/Portals/_default/skins/dod2/assets/dist/css/full-width.min.css?cdv=4840 — 200 — 2.0 KiB — 59 ms — h2https://www.nsa.gov/Portals/75/Homepage/Home.css?cdv=4840www.nsa.gov/Portals/75/Homepage/Hom... https://www.nsa.gov/Portals/75/Homepage/Home.css?cdv=4840 — 200 — 3.1 KiB — 60 ms — h2https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/SocialIcons/css/fa-social-icons.css?cdv=4840www.nsa.gov/Desktopmodules/SharedLi... https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/SocialIcons/css/fa-social-icons.css?cdv=4840 — 200 — 559 B — 91 ms — h2https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/Skin/SkipNav/css/skipnav.css?cdv=4840www.nsa.gov/Desktopmodules/SharedLi... https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/Skin/SkipNav/css/skipnav.css?cdv=4840 — 200 — 1.1 KiB — 60 ms — h2https://www.nsa.gov/DesktopModules/SharedLibrary/ValidatedPlugins/aos/aos.css?cdv=4840www.nsa.gov/DesktopModules/SharedLi... https://www.nsa.gov/DesktopModules/SharedLibrary/ValidatedPlugins/aos/aos.css?cdv=4840 — 200 — 2.5 KiB — 62 ms — h2https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/spectrum/spectrum.css?cdv=4840www.nsa.gov/Desktopmodules/SharedLi... https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/spectrum/spectrum.css?cdv=4840 — 200 — 4.3 KiB — 63 ms — h2https://www.nsa.gov/DesktopModules/PhotoDashboard/Templates/DefenseGov/Style.css?cdv=4840www.nsa.gov/DesktopModules/PhotoDas... https://www.nsa.gov/DesktopModules/PhotoDashboard/Templates/DefenseGov/Style.css?cdv=4840 — 200 — 1.3 KiB — 65 ms — h2https://www.nsa.gov/desktopmodules/ArticleCS/styles/DOD2/style.css?cdv=4840www.nsa.gov/desktopmodules/ArticleC... https://www.nsa.gov/desktopmodules/ArticleCS/styles/DOD2/style.css?cdv=4840 — 200 — 19.7 KiB — 79 ms — h2https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/ColorBox/colorbox.css?cdv=4840www.nsa.gov/Desktopmodules/SharedLi... https://www.nsa.gov/Desktopmodules/SharedLibrary/Plugins/ColorBox/colorbox.css?cdv=4840 — 200 — 1.8 KiB — 70 ms — 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h2https://www.nsa.gov/Portals/75/Fonts/Teko-SemiBold.ttfwww.nsa.gov/Portals/75/Fonts/Teko-S... https://www.nsa.gov/Portals/75/Fonts/Teko-SemiBold.ttf — 200 — 115.5 KiB — 57 ms — h2https://www.nsa.gov/Portals/75/Fonts/Teko-Regular.ttfwww.nsa.gov/Portals/75/Fonts/Teko-R... https://www.nsa.gov/Portals/75/Fonts/Teko-Regular.ttf — 200 — 113.4 KiB — 67 ms — h2https://www.nsa.gov/Portals/75/Fonts/Roboto-Bold.ttfwww.nsa.gov/Portals/75/Fonts/Roboto... https://www.nsa.gov/Portals/75/Fonts/Roboto-Bold.ttf — 200 — 86.9 KiB — 111 ms — h2https://www.nsa.gov/Portals/75/Fonts/Roboto-Black.ttfwww.nsa.gov/Portals/75/Fonts/Roboto... https://www.nsa.gov/Portals/75/Fonts/Roboto-Black.ttf — 200 — 87.3 KiB — 67 ms — h2https://search.usa.gov/javascripts/remote.loader.jssearch.usa.gov/javascripts/remote.l... https://search.usa.gov/javascripts/remote.loader.js — -1 — 0 B — 79 ms — https://www.nsa.gov/Desktopmodules/SharedLibrary/ValidatedPlugins/font-awesome6/webfonts/fa-brands-400.woff2www.nsa.gov/Desktopmodules/SharedLi... https://www.nsa.gov/Desktopmodules/SharedLibrary/ValidatedPlugins/font-awesome6/webfonts/fa-brands-400.woff2 — 200 — 107.6 KiB — 15 ms — h2https://www.google-analytics.com/g/collect?v=2&tid=G-CSLL4ZEK4L&gtm=45je64k0v9131934939za200zd9131934939&_p=1776890833477&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=151627255.1776890834&frm=0&pscdl=noapi&rcb=6&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938469~117266401~117512543~118463262&dl=https%3A%2F%2Fnsa.gov%2F&dt=National%20Security%20Agency%20%7C%20Central%20Security%20Service&dr=&sid=1776890833&sct=1&seg=0&_tu=wA&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.agency=DOD&ep.subagency=NSA&ep.site_topic=dma.web&ep.site_platform=unspecified%3Ansa.gov&ep.script_source=https%3A%2F%2Fnsa.gov%2Fdesktopmodules%2Fsharedlibrary%2Fplugins%2Fgoogleanalytics%2Funiversal-federated-analytics-8.7.js&ep.version=20250702%20v8.7%20-%20ga4&ep.protocol=https%3A&ep.using_parallel_tracker=no&ep.hostname_dimension=nsa.gov&tfd=713www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-CSLL4ZEK4L&gtm=45je64k0v9131934939za200zd9131934939&_p=1776890833477&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=151627255.1776890834&frm=0&pscdl=noapi&rcb=6&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938469~117266401~117512543~118463262&dl=https%3A%2F%2Fnsa.gov%2F&dt=National%20Security%20Agency%20%7C%20Central%20Security%20Service&dr=&sid=1776890833&sct=1&seg=0&_tu=wA&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&ep.agency=DOD&ep.subagency=NSA&ep.site_topic=dma.web&ep.site_platform=unspecified%3Ansa.gov&ep.script_source=https%3A%2F%2Fnsa.gov%2Fdesktopmodules%2Fsharedlibrary%2Fplugins%2Fgoogleanalytics%2Funiversal-federated-analytics-8.7.js&ep.version=20250702%20v8.7%20-%20ga4&ep.protocol=https%3A&ep.using_parallel_tracker=no&ep.hostname_dimension=nsa.gov&tfd=713 — 204 — 547 B — 43 ms — h2https://www.nsa.gov/Portals/75/favicon.ico?ver=qRajspwcTqAKByf9rmRnPg%3d%3dwww.nsa.gov/Portals/75/favicon.ico?... https://www.nsa.gov/Portals/75/favicon.ico?ver=qRajspwcTqAKByf9rmRnPg%3d%3d — 200 — 5.7 KiB — 15 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 505ms · 198KB · $9/mo
www.nsa.gov
Other
Optional
Execution 194ms
Transfer 21 KB
Monthly Cost $3/mo
Unattributable
Other
Optional
Execution 131ms
Transfer 0 KB
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 102ms
Transfer 147 KB
Unused 41%
Monthly Cost $2/mo
www.nsa.gov
Other
Optional
Execution 78ms
Transfer 30 KB
Monthly Cost $1/mo

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

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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