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https://cia.gov

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
5
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
72
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.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
82
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.

2.35 s

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

4.57 s

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

339 ms

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

0.017

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

3.09 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.

12.29 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
7 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
2.8 MB transferred, 60 requests
FIX
2.8 MB transferred, 60 requests
Warning::
Page weighs 5.0 MB (2.8 MB transferred)
Warning::
Images are 2.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.0 MB
Info::
Fonts are 251 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 251 KB
Info::
60 HTTP requests
Info::
Estimated 0.59 g CO2 per page load
2.8 MB / 2.4 MB budget
2.8 MB transferred
60 requests
0.59 g CO2 per page load
Images 2.0 MiB 71%
JavaScript 340.7 KiB 12%
Fonts 250.6 KiB 9%
Other 148.2 KiB 5%
HTML 59.5 KiB 2%
Other 40.3 KiB 1%
Other 747 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 (2.8 MiB of 2.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
3587ms total JS execution
FIX
3587ms total JS execution
Warning::
https://www.cia.gov/: 1464ms CPU time
Warning::
https://www.cia.gov/framework-481beeb6bc5ccc2a4757...: 670ms CPU time
Warning::
Unattributable: 659ms CPU time
Warning::
https://www.cia.gov/app-bd3d900226fb938894f0.js: 456ms CPU time
Info::
https://www.cia.gov/9732ccd59472190f98e17ef880683c...: 241ms CPU time
Warning::
Third-party scripts: 3587ms (100% of total)

Main Thread Breakdown

Other 38% Script Evaluation 31% Style & Layout 14% Script Parsing & Compilation 6% Rendering 5% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://www.cia.gov/1464ms113ms13ms3rd
https://www.cia.gov/framework-481beeb6bc5ccc2a4757.js670ms503ms30ms3rd
Unattributable659ms29ms0ms3rd
https://www.cia.gov/app-bd3d900226fb938894f0.js456ms238ms16ms3rd
https://www.cia.gov/9732ccd59472190f98e17ef880683c74ce62c2d0-f876f95473acd3d1a933.js241ms222ms12ms3rd
https://www.cia.gov/component---src-templates-page-js-994cbc94a939325112f0.js96ms12ms57ms3rd
D
Page Weight Inventory
Action
60 resources · 2.8 MB · 131 KB savings available
FIX
60 resources · 2.8 MB · 131 KB savings available
Warning::
Page weight 1.8 MB over 1MB target
Got: 2.8 MB Expected: ≤ 1 MB
Info::
~131 KB of savings available
Warning::
59 third-party resources (100% of weight)
Info::
1 resources over 200KB
60 resources · 2.8 MiB · 59 third-party 1.8 MiB over 1MB target
Image 72% · 2.0 MiB
JavaScript 12% · 340.7 KiB
Font 9% · 250.6 KiB
Other 5% · 149.1 KiB
Document 2% · 59.5 KiB

~130.9 KiB of savings available

Remove unused JavaScript: 130.9 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.

B
Image Optimization
24 images, 0 KB saveable
REVIEW
24 images, 0 KB saveable
Info::
All images are well-optimized
24 images 2.0 MB
0 oversized -0 KB
6 legacy format
0 missing dimensions CLS risk
B
JS Bundles
12 scripts, 131 KB unused
REVIEW
12 scripts, 131 KB unused
Warning::
https://www.cia.gov/component---src-templates-page...: 56 KB unused (61%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.cia.gov/commons-0c93c27e22e15f6b978b.j...: 29 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.cia.gov/js2/verification.js: 24 KB unused (90%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.cia.gov/b637e9a5-e830966c7b78245dccc9....: 22 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 131 KB
131 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.cia.gov/component---src-templates-page-js-994cbc94a939325112f0.js92 KB56 KB (61%)✓3rd
https://www.cia.gov/commons-0c93c27e22e15f6b978b.js45 KB29 KB (65%)✓3rd
https://www.cia.gov/js2/verification.js27 KB24 KB (90%)✓3rd
https://www.cia.gov/b637e9a5-e830966c7b78245dccc9.js30 KB22 KB (76%)✓3rd
https://www.cia.gov/js2/pubkey.js1 KB—✓3rd
https://www.cia.gov/webpack-runtime-bdd5a6fdb7a99f3d72d4.js3 KB—✓3rd
https://www.cia.gov/framework-481beeb6bc5ccc2a4757.js43 KB—✓3rd
https://www.cia.gov/app-bd3d900226fb938894f0.js27 KB—✓3rd
https://www.cia.gov/js2/languages.js9 KB—✗3rd
https://www.cia.gov/75fc9c18-ad310dbbcd6f2aca941e.js19 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

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
6 fonts (251 KB)
PASS
6 fonts (251 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

251 KB total

Render-blocking

0

of 6

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 FCP 2.4 s LCP 4.6 shttps://www.cia.gov/static/PublicSans-Light-05ff7d7149c9a6d61fc10c3842f14215.woffPublicSans-Light-05ff7d... https://www.cia.gov/static/PublicSans-Light-05ff7d7149c9a6d61fc10c3842f14215.woff — 41.0 KiB — 107 ms — font-display: swaphttps://www.cia.gov/static/GT-America-Mono-Bold-5cb65dbcadbc053b4803a3de9e5204a1.woff2GT-America-Mono-Bold-5c... https://www.cia.gov/static/GT-America-Mono-Bold-5cb65dbcadbc053b4803a3de9e5204a1.woff2 — 35.6 KiB — 156 ms — font-display: swaphttps://www.cia.gov/static/PublicSans-Bold-c5f1403759929abd85bf95108c08b4ac.woff2PublicSans-Bold-c5f1403... https://www.cia.gov/static/PublicSans-Bold-c5f1403759929abd85bf95108c08b4ac.woff2 — 33.3 KiB — 167 ms — font-display: swaphttps://www.cia.gov/static/GT-Sectra-Fine-Bold-23b3344434247f9eb8cabd9f5e923ee3.woff2GT-Sectra-Fine-Bold-23b... https://www.cia.gov/static/GT-Sectra-Fine-Bold-23b3344434247f9eb8cabd9f5e923ee3.woff2 — 69.6 KiB — 143 ms — font-display: swaphttps://www.cia.gov/static/PublicSans-ExtraBold-06e2dc3ec7db555110e527b86b93d913.woff2PublicSans-ExtraBold-06... https://www.cia.gov/static/PublicSans-ExtraBold-06e2dc3ec7db555110e527b86b93d913.woff2 — 30.0 KiB — 191 ms — font-display: swaphttps://www.cia.gov/static/PublicSans-Bold-a239fb971af47134c0c330b3d38f8288.woffPublicSans-Bold-a239fb9... https://www.cia.gov/static/PublicSans-Bold-a239fb971af47134c0c330b3d38f8288.woff — 41.2 KiB — 161 ms — font-display: swap
PublicSans-Light-05ff7d... woff swap
Size 41 KB
Load time 107 ms
Start 715 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
GT-America-Mono-Bold-5c... woff2 swap
Size 36 KB
Load time 156 ms
Start 715 ms
Risk FOUT — text flashes from fallback to web font
PublicSans-Bold-c5f1403... woff2 swap
Size 33 KB
Load time 167 ms
Start 716 ms
Risk FOUT — text flashes from fallback to web font
GT-Sectra-Fine-Bold-23b... woff2 swap
Size 70 KB
Load time 143 ms
Start 716 ms
Risk FOUT — text flashes from fallback to web font
PublicSans-ExtraBold-06... woff2 swap
Size 30 KB
Load time 191 ms
Start 747 ms
Risk FOUT — text flashes from fallback to web font
PublicSans-Bold-a239fb9... woff swap
Size 41 KB
Load time 161 ms
Start 782 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~25 KB and ~50 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
60 requests over 1625ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.4 s LCP 4.6 shttps://cia.gov// https://cia.gov/ — 301 — 228 B — 252 ms — h2https://www.cia.gov/www.cia.gov/ https://www.cia.gov/ — 200 — 59.5 KiB — 217 ms — h2https://www.cia.gov/js2/pubkey.jswww.cia.gov/js2/pubkey.js https://www.cia.gov/js2/pubkey.js — 200 — 824 B — 91 ms — h2https://www.cia.gov/js2/verification.jswww.cia.gov/js2/verification.js https://www.cia.gov/js2/verification.js — 200 — 26.8 KiB — 172 ms — h2https://www.cia.gov/static/cia-seal-5d0a426b2dbe873ce776829bd8f8f6c6.pngwww.cia.gov/static/cia-seal-5d0a426... https://www.cia.gov/static/cia-seal-5d0a426b2dbe873ce776829bd8f8f6c6.png — 200 — 26.7 KiB — 198 ms — h2https://www.cia.gov/static/7f79f658a21a4953a08247de220d6233/828a3/hero-nathan-hale.webpwww.cia.gov/static/7f79f658a21a4953... https://www.cia.gov/static/7f79f658a21a4953a08247de220d6233/828a3/hero-nathan-hale.webp — 200 — 58.8 KiB — 146 ms — h2https://www.cia.gov/manifest.webmanifestwww.cia.gov/manifest.webmanifest https://www.cia.gov/manifest.webmanifest — 200 — 747 B — 261 ms — h2https://www.cia.gov/webpack-runtime-bdd5a6fdb7a99f3d72d4.jswww.cia.gov/webpack-runtime-bdd5a6f... https://www.cia.gov/webpack-runtime-bdd5a6fdb7a99f3d72d4.js — 200 — 2.9 KiB — 91 ms — h2https://www.cia.gov/framework-481beeb6bc5ccc2a4757.jswww.cia.gov/framework-481beeb6bc5cc... https://www.cia.gov/framework-481beeb6bc5ccc2a4757.js — 200 — 43.5 KiB — 122 ms — h2https://www.cia.gov/app-bd3d900226fb938894f0.jswww.cia.gov/app-bd3d900226fb938894f... https://www.cia.gov/app-bd3d900226fb938894f0.js — 200 — 26.6 KiB — 154 ms — h2https://www.cia.gov/js2/languages.jswww.cia.gov/js2/languages.js https://www.cia.gov/js2/languages.js — 200 — 9.2 KiB — 129 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg%20height='1707'%20width='2560'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1707'%20width='2560'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='2000'%20width='3000'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='2000'%20width='3000'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='504'%20width='504'%20xmlns='http://www.w3.org/200…www.w3.org/200… data:image/svg+xml;charset=utf-8,%3Csvg%20height='504'%20width='504'%20xmlns='http://www.w3.org/200… — 200 — 0 B — 0 ms — datahttps://www.cia.gov/static/PublicSans-Light-05ff7d7149c9a6d61fc10c3842f14215.woffwww.cia.gov/static/PublicSans-Light... https://www.cia.gov/static/PublicSans-Light-05ff7d7149c9a6d61fc10c3842f14215.woff — 200 — 41.0 KiB — 107 ms — h2https://www.cia.gov/static/GT-America-Mono-Bold-5cb65dbcadbc053b4803a3de9e5204a1.woff2www.cia.gov/static/GT-America-Mono-... https://www.cia.gov/static/GT-America-Mono-Bold-5cb65dbcadbc053b4803a3de9e5204a1.woff2 — 200 — 35.6 KiB — 156 ms — h2https://www.cia.gov/static/PublicSans-Bold-c5f1403759929abd85bf95108c08b4ac.woff2www.cia.gov/static/PublicSans-Bold-... https://www.cia.gov/static/PublicSans-Bold-c5f1403759929abd85bf95108c08b4ac.woff2 — 200 — 33.3 KiB — 167 ms — h2https://www.cia.gov/static/GT-Sectra-Fine-Bold-23b3344434247f9eb8cabd9f5e923ee3.woff2www.cia.gov/static/GT-Sectra-Fine-B... https://www.cia.gov/static/GT-Sectra-Fine-Bold-23b3344434247f9eb8cabd9f5e923ee3.woff2 — 200 — 69.6 KiB — 143 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg%20height='360'%20width='360'%20xmlns='http://www.w3.org/200…www.w3.org/200… data:image/svg+xml;charset=utf-8,%3Csvg%20height='360'%20width='360'%20xmlns='http://www.w3.org/200… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='3328'%20width='4992'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='3328'%20width='4992'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='2661'%20width='2661'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='2661'%20width='2661'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='1500'%20width='1500'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1500'%20width='1500'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datahttps://www.cia.gov/static/45ea7dd1005ab17954c801e9575bb7ae/41aff/ohb.jpgwww.cia.gov/static/45ea7dd1005ab179... https://www.cia.gov/static/45ea7dd1005ab17954c801e9575bb7ae/41aff/ohb.jpg — 200 — 1.0 MiB — 346 ms — h2https://www.cia.gov/static/19d99e5def8deaaf9b036d799503ad9d/e4d88/e-st-hq.pngwww.cia.gov/static/19d99e5def8deaaf... https://www.cia.gov/static/19d99e5def8deaaf9b036d799503ad9d/e4d88/e-st-hq.png — 200 — 124.0 KiB — 280 ms — h2https://www.cia.gov/static/PublicSans-ExtraBold-06e2dc3ec7db555110e527b86b93d913.woff2www.cia.gov/static/PublicSans-Extra... https://www.cia.gov/static/PublicSans-ExtraBold-06e2dc3ec7db555110e527b86b93d913.woff2 — 200 — 30.0 KiB — 191 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg%20height='100'%20width='100'%20xmlns='http://www.w3.org/200…www.w3.org/200… data:image/svg+xml;charset=utf-8,%3Csvg%20height='100'%20width='100'%20xmlns='http://www.w3.org/200… — 200 — 0 B — 0 ms — datahttps://www.cia.gov/static/3c9608a333b538844f39be181eda1928/6426e/Paul-Revere.jpgwww.cia.gov/static/3c9608a333b53884... https://www.cia.gov/static/3c9608a333b538844f39be181eda1928/6426e/Paul-Revere.jpg — 200 — 131.0 KiB — 284 ms — h2https://www.cia.gov/static/e7bea8aa95dc0e88d424697ca2d4aca8/34e0f/Stories-Prelude-to-COLDFEETwebtile.jpgwww.cia.gov/static/e7bea8aa95dc0e88... https://www.cia.gov/static/e7bea8aa95dc0e88d424697ca2d4aca8/34e0f/Stories-Prelude-to-COLDFEETwebtile.jpg — 200 — 96.0 KiB — 314 ms — h2https://www.cia.gov/static/eee5f06146c38b7634f6e11d4cb8c290/34e0f/Stories-5-Lessons-in-Spying-Courtesy-of-George-Washingtonwebtile-copy.jpgwww.cia.gov/static/eee5f06146c38b76... https://www.cia.gov/static/eee5f06146c38b7634f6e11d4cb8c290/34e0f/Stories-5-Lessons-in-Spying-Courtesy-of-George-Washingtonwebtile-copy.jpg — 200 — 62.9 KiB — 313 ms — h2https://www.cia.gov/static/PublicSans-Bold-a239fb971af47134c0c330b3d38f8288.woffwww.cia.gov/static/PublicSans-Bold-... https://www.cia.gov/static/PublicSans-Bold-a239fb971af47134c0c330b3d38f8288.woff — 200 — 41.2 KiB — 161 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.4 s LCP 4.6 shttps://cia.gov// https://cia.gov/ — 301 — 228 B — 252 ms — h2https://www.cia.gov/www.cia.gov/ https://www.cia.gov/ — 200 — 59.5 KiB — 217 ms — h2https://www.cia.gov/js2/pubkey.jswww.cia.gov/js2/pubkey.js https://www.cia.gov/js2/pubkey.js — 200 — 824 B — 91 ms — h2https://www.cia.gov/js2/verification.jswww.cia.gov/js2/verification.js https://www.cia.gov/js2/verification.js — 200 — 26.8 KiB — 172 ms — h2https://www.cia.gov/static/cia-seal-5d0a426b2dbe873ce776829bd8f8f6c6.pngwww.cia.gov/static/cia-seal-5d0a426... https://www.cia.gov/static/cia-seal-5d0a426b2dbe873ce776829bd8f8f6c6.png — 200 — 26.7 KiB — 198 ms — h2https://www.cia.gov/static/7f79f658a21a4953a08247de220d6233/828a3/hero-nathan-hale.webpwww.cia.gov/static/7f79f658a21a4953... https://www.cia.gov/static/7f79f658a21a4953a08247de220d6233/828a3/hero-nathan-hale.webp — 200 — 58.8 KiB — 146 ms — h2https://www.cia.gov/manifest.webmanifestwww.cia.gov/manifest.webmanifest https://www.cia.gov/manifest.webmanifest — 200 — 747 B — 261 ms — h2https://www.cia.gov/webpack-runtime-bdd5a6fdb7a99f3d72d4.jswww.cia.gov/webpack-runtime-bdd5a6f... https://www.cia.gov/webpack-runtime-bdd5a6fdb7a99f3d72d4.js — 200 — 2.9 KiB — 91 ms — h2https://www.cia.gov/framework-481beeb6bc5ccc2a4757.jswww.cia.gov/framework-481beeb6bc5cc... https://www.cia.gov/framework-481beeb6bc5ccc2a4757.js — 200 — 43.5 KiB — 122 ms — h2https://www.cia.gov/app-bd3d900226fb938894f0.jswww.cia.gov/app-bd3d900226fb938894f... https://www.cia.gov/app-bd3d900226fb938894f0.js — 200 — 26.6 KiB — 154 ms — h2https://www.cia.gov/js2/languages.jswww.cia.gov/js2/languages.js https://www.cia.gov/js2/languages.js — 200 — 9.2 KiB — 129 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg%20height='1707'%20width='2560'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1707'%20width='2560'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 3587ms · 251KB · $48/mo
www.cia.gov
Other
Costly
Execution 1464ms
Transfer 59 KB
Monthly Cost $19/mo
www.cia.gov
Other
Costly
Execution 670ms
Transfer 43 KB
Monthly Cost $9/mo
Unattributable
Other
Costly
Execution 659ms
Transfer 0 KB
Monthly Cost $9/mo
www.cia.gov
Other
Costly
Execution 456ms
Transfer 27 KB
Monthly Cost $6/mo
www.cia.gov
Other
Costly
Execution 241ms
Transfer 29 KB
Monthly Cost $3/mo
www.cia.gov
Other
Optional
Execution 96ms
Transfer 92 KB
Unused 61%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.cia.gov adds 1464ms and costs ~$19/month
  • www.cia.gov adds 670ms and costs ~$9/month
  • Unattributable adds 659ms and costs ~$9/month
  • www.cia.gov adds 456ms and costs ~$6/month
  • www.cia.gov adds 241ms 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.cia.gov takes 1464ms 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.cia.gov 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

Unattributable takes 659ms 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.cia.gov takes 456ms 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.cia.gov takes 241ms 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

61% of www.cia.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

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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