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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
44
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
99
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.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.99 s

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

18.03 s

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

494 ms

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

0.062

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

34.04 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.

18.13 s

Page Load Progression

2.8 s
5.6 s
8.4 s
11.2 s
14.0 s
16.7 s
19.5 s
22.3 s
Checks
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
4.8 MB transferred, 57 requests
FIX
4.8 MB transferred, 57 requests
Critical::
Page weighs 10.1 MB (4.8 MB transferred)
Warning::
Images are 3.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.0 MB
Warning::
JavaScript is 893 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 893 KB
Info::
Fonts are 620 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 620 KB
Info::
CSS is 338 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 338 KB
Info::
57 HTTP requests
Info::
Estimated 1.0 g CO2 per page load
4.8 MB / 2.4 MB budget
4.8 MB transferred
57 requests
1.0 g CO2 per page load
Images 3.0 MiB 62%
JavaScript 892.9 KiB 18%
Fonts 619.7 KiB 13%
CSS 337.7 KiB 7%
HTML 20.2 KiB 0%
Other 867 B 0%
Other 595 B 0%
Other 478 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

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

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 (4.8 MiB of 4.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2614ms total JS execution
FIX
2614ms total JS execution
Warning::
https://www.gao.gov/assets/js/js_M7SdCY2SYZwgfWQXl...: 606ms CPU time
Warning::
Unattributable: 423ms CPU time
Warning::
https://www.gao.gov/: 415ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-V393...: 251ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-26MP...: 230ms CPU time
Warning::
Third-party scripts: 2614ms (100% of total)

Main Thread Breakdown

Script Evaluation 40% Other 26% Style & Layout 14% Script Parsing & Compilation 9% Parse HTML & CSS 7%
ScriptTotalScriptingParse/CompileParty
https://www.gao.gov/assets/js/js_M7SdCY2SYZwgfWQXlt1xiLMQFifO5a6NO9lrgyvPDSU.js?scope=footer&delta=2&language=en&theme=gao_uswds&include=eJxdkNFyhCAMRX-I6Ev_x4kQWdZgGAJ17deXVdqxfQk5XMi9MDN-HeMcZMAnvsx84bv23jKqctDSmQVdb5PwsQTmH8wSg1KnjEvvdpqToVfhsK2jyzUhDx2NR5mq7k6bp9gVQA8tFH_XSFuFU3rWmKDI7YZnmZFBbQ6p6E1ImNFnTA8ARwtWLgAPygLtHY7y7eRnoB2gBXfVFoXLCT6MF_FMU0E_-lb-8_VXfzajOSdOdiUXiuQpbIVaiBJkGy8JrZXsGg9LlqZuzrz9rxR6zvwGH4qZSQ606ms307ms30ms3rd
Unattributable423ms8ms0ms3rd
https://www.gao.gov/415ms8ms1ms3rd
https://www.googletagmanager.com/gtag/js?id=G-V393SNS3SR251ms213ms37ms3rd
https://www.googletagmanager.com/gtag/js?id=G-26MP5S07MC&cx=c&gtm=4e64h1h1230ms164ms34ms3rd
https://www.gao.gov/assets/css/css_L24m6c7JV72YoZpvMjn3Ouij4gaVj6CaeGWYskoOtko.css?delta=1&language=en&theme=gao_uswds&include=eJxFjlEOwyAMQy8E5UhVaFLKFkiVwFZ6-q3apn36-clyZDhHYAHMNblFlAJq34EnuMHxAVW0AOeTHB2Nc73_lG90CWTu9kQLiSUCe2uDr71_sYNCUtg375FW6Ny830jFG2ckdQxDepsx2yIP0hGk0iLsCmGGIFQi4bReR1p76zasUQkRjF6Zi0sp219ms0ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-TZMWNH7201ms161ms36ms3rd
https://www.googletagmanager.com/gtag/js?id=UA-29643216-1&cx=c&gtm=4e64h1135ms106ms28ms3rd
https://www.google-analytics.com/analytics.js71ms49ms17ms3rd
https://www.googletagmanager.com/gtag/js?id=G-V393SNS3SR&cx=c&gtm=4e64h1h165ms22ms42ms3rd
D
JS Bundles
Action
15 scripts, 432 KB unused
FIX
15 scripts, 432 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-V393...: 108 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gao.gov/assets/js/js_M7SdCY2SYZwgfWQXl...: 67 KB unused (61%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-26MP...: 66 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=UA-296...: 66 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-V393...: 63 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 432 KB
432 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-V393SNS3SR&cx=c&gtm=4e64h1h1155 KB108 KB (70%)✓3rd
https://www.gao.gov/assets/js/js_M7SdCY2SYZwgfWQXlt1xiLMQFifO5a6NO9lrgyvPDSU.js?scope=footer&delta=2&language=en&theme=gao_uswds&include=eJxdkNFyhCAMRX-I6Ev_x4kQWdZgGAJ17deXVdqxfQk5XMi9MDN-HeMcZMAnvsx84bv23jKqctDSmQVdb5PwsQTmH8wSg1KnjEvvdpqToVfhsK2jyzUhDx2NR5mq7k6bp9gVQA8tFH_XSFuFU3rWmKDI7YZnmZFBbQ6p6E1ImNFnTA8ARwtWLgAPygLtHY7y7eRnoB2gBXfVFoXLCT6MF_FMU0E_-lb-8_VXfzajOSdOdiUXiuQpbIVaiBJkGy8JrZXsGg9LlqZuzrz9rxR6zvwGH4qZSQ110 KB67 KB (61%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-26MP5S07MC&cx=c&gtm=4e64h1h1152 KB66 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=UA-29643216-1&cx=c&gtm=4e64h1125 KB66 KB (53%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-V393SNS3SR157 KB63 KB (40%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-TZMWNH7134 KB63 KB (47%)✓3rd
https://www.gao.gov/assets/js/js_HpA9xKBj-hlVIgnRCcHgaRCcnP9zBDC1JpnHKrbmwyU.js?scope=footer&delta=0&language=en&theme=gao_uswds&include=eJxdkNFyhCAMRX-I6Ev_x4kQWdZgGAJ17deXVdqxfQk5XMi9MDN-HeMcZMAnvsx84bv23jKqctDSmQVdb5PwsQTmH8wSg1KnjEvvdpqToVfhsK2jyzUhDx2NR5mq7k6bp9gVQA8tFH_XSFuFU3rWmKDI7YZnmZFBbQ6p6E1ImNFnTA8ARwtWLgAPygLtHY7y7eRnoB2gBXfVFoXLCT6MF_FMU0E_-lb-8_VXfzajOSdOdiUXiuQpbIVaiBJkGy8JrZXsGg9LlqZuzrz9rxR6zvwGH4qZSQ1 KB—✓3rd
https://www.gao.gov/assets/js/js_2etTA5GX_MqzAqBpgb9V3dhdLF0W0lpOlTsezLEGr7w.js?scope=footer&delta=4&language=en&theme=gao_uswds&include=eJxdkNFyhCAMRX-I6Ev_x4kQWdZgGAJ17deXVdqxfQk5XMi9MDN-HeMcZMAnvsx84bv23jKqctDSmQVdb5PwsQTmH8wSg1KnjEvvdpqToVfhsK2jyzUhDx2NR5mq7k6bp9gVQA8tFH_XSFuFU3rWmKDI7YZnmZFBbQ6p6E1ImNFnTA8ARwtWLgAPygLtHY7y7eRnoB2gBXfVFoXLCT6MF_FMU0E_-lb-8_VXfzajOSdOdiUXiuQpbIVaiBJkGy8JrZXsGg9LlqZuzrz9rxR6zvwGH4qZSQ8 KB—✓3rd
https://www.gao.gov/modules/contrib/uswds_ckeditor_integration/js/aftermarket/uswds_accordion.js?tdv3co1 KB—✓3rd
https://www.gao.gov/core/assets/vendor/jquery/jquery.min.js?v=4.0.027 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

F
Page Weight Inventory
Action
57 resources · 4.8 MB · 432 KB savings available
FIX
57 resources · 4.8 MB · 432 KB savings available
Warning::
Page weight 3.8 MB over 1MB target
Got: 4.8 MB Expected: ≤ 1 MB
Info::
~432 KB of savings available
Warning::
56 third-party resources (100% of weight)
Info::
4 resources over 200KB
57 resources · 4.8 MiB · 56 third-party 3.8 MiB over 1MB target
Image 62% · 3.0 MiB
JavaScript 18% · 892.9 KiB
Font 13% · 619.7 KiB
CSS 7% · 337.7 KiB
Document 0% · 20.4 KiB
Other 0% · 1.0 KiB

~432.1 KiB of savings available

Remove unused JavaScript: 432.1 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.

B
Image Optimization
28 images, 0 KB saveable
REVIEW
28 images, 0 KB saveable
Warning::
https://www.gao.gov/themes/custom/gao_uswds/dist/g... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
28 images 3.0 MB
0 oversized -0 KB
19 legacy format
1 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

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 (620 KB)
PASS
6 fonts (620 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

620 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s FCP 4.0 s LCP 18.0 shttps://www.gao.gov/themes/custom/gao_uswds/dist/fonts/lato/Lato-Regular.woff2Lato-Regular.woff2 https://www.gao.gov/themes/custom/gao_uswds/dist/fonts/lato/Lato-Regular.woff2 — 178.8 KiB — 500 ms — font-display: swaphttps://www.gao.gov/themes/custom/gao_uswds/dist/fonts/merriweather/Latin-Merriweather-Bold.woff2Latin-Merriweather-Bold... https://www.gao.gov/themes/custom/gao_uswds/dist/fonts/merriweather/Latin-Merriweather-Bold.woff2 — 21.1 KiB — 464 ms — font-display: swaphttps://www.gao.gov/themes/custom/gao_uswds/dist/fonts/lato/Lato-Bold.woff2Lato-Bold.woff2 https://www.gao.gov/themes/custom/gao_uswds/dist/fonts/lato/Lato-Bold.woff2 — 180.9 KiB — 446 ms — font-display: swaphttps://www.gao.gov/themes/custom/gao_uswds/dist/fonts/webfonts/fa-brands-400.woff2fa-brands-400.woff2 https://www.gao.gov/themes/custom/gao_uswds/dist/fonts/webfonts/fa-brands-400.woff2 — 107.8 KiB — 439 ms — font-display: swaphttps://www.gao.gov/themes/custom/gao_uswds/dist/fonts/webfonts/fa-regular-400.woff2fa-regular-400.woff2 https://www.gao.gov/themes/custom/gao_uswds/dist/fonts/webfonts/fa-regular-400.woff2 — 18.7 KiB — 508 ms — font-display: swaphttps://www.gao.gov/themes/custom/gao_uswds/dist/fonts/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://www.gao.gov/themes/custom/gao_uswds/dist/fonts/webfonts/fa-solid-900.woff2 — 112.4 KiB — 461 ms — font-display: swap
Lato-Regular.woff2 woff2 swap
Size 179 KB
Load time 500 ms
Start 21.7 s
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
Latin-Merriweather-Bold... woff2 swap
Size 21 KB
Load time 464 ms
Start 21.7 s
Risk FOUT — text flashes from fallback to web font
Lato-Bold.woff2 woff2 swap
Size 181 KB
Load time 446 ms
Start 21.7 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fa-brands-400.woff2 woff2 swap
Size 108 KB
Load time 439 ms
Start 21.7 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fa-regular-400.woff2 woff2 swap
Size 19 KB
Load time 508 ms
Start 21.7 s
Risk FOUT — text flashes from fallback to web font
fa-solid-900.woff2 woff2 swap
Size 112 KB
Load time 461 ms
Start 22.2 s
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 ~290 KB and ~580 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
57 requests over 23165ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s FCP 4.0 s LCP 18.0 shttps://gao.gov// https://gao.gov/ — 302 — 229 B — 294 ms — http/1.1https://www.gao.gov/www.gao.gov/ https://www.gao.gov/ — 200 — 20.2 KiB — 463 ms — h2https://www.gao.gov/assets/css/css_Jy6Y2yYiSbh3I98cFZPomKJnJDjzUf1XHNzO7r_bvMM.css?delta=0&language=en&theme=gao_uswds&include=eJxFjlEOwyAMQy8E5UhVaFLKFkiVwFZ6-q3apn36-clyZDhHYAHMNblFlAJq34EnuMHxAVW0AOeTHB2Nc73_lG90CWTu9kQLiSUCe2uDr71_sYNCUtg375FW6Ny830jFG2ckdQxDepsx2yIP0hGk0iLsCmGGIFQi4bReR1p76zasUQkRjF6Zi0spwww.gao.gov/assets/css/css_Jy6Y2yYi... https://www.gao.gov/assets/css/css_Jy6Y2yYiSbh3I98cFZPomKJnJDjzUf1XHNzO7r_bvMM.css?delta=0&language=en&theme=gao_uswds&include=eJxFjlEOwyAMQy8E5UhVaFLKFkiVwFZ6-q3apn36-clyZDhHYAHMNblFlAJq34EnuMHxAVW0AOeTHB2Nc73_lG90CWTu9kQLiSUCe2uDr71_sYNCUtg375FW6Ny830jFG2ckdQxDepsx2yIP0hGk0iLsCmGGIFQi4bReR1p76zasUQkRjF6Zi0sp — 503 — 139 B — 20.9 s — h2https://www.gao.gov/assets/css/css_L24m6c7JV72YoZpvMjn3Ouij4gaVj6CaeGWYskoOtko.css?delta=1&language=en&theme=gao_uswds&include=eJxFjlEOwyAMQy8E5UhVaFLKFkiVwFZ6-q3apn36-clyZDhHYAHMNblFlAJq34EnuMHxAVW0AOeTHB2Nc73_lG90CWTu9kQLiSUCe2uDr71_sYNCUtg375FW6Ny830jFG2ckdQxDepsx2yIP0hGk0iLsCmGGIFQi4bReR1p76zasUQkRjF6Zi0spwww.gao.gov/assets/css/css_L24m6c7J... https://www.gao.gov/assets/css/css_L24m6c7JV72YoZpvMjn3Ouij4gaVj6CaeGWYskoOtko.css?delta=1&language=en&theme=gao_uswds&include=eJxFjlEOwyAMQy8E5UhVaFLKFkiVwFZ6-q3apn36-clyZDhHYAHMNblFlAJq34EnuMHxAVW0AOeTHB2Nc73_lG90CWTu9kQLiSUCe2uDr71_sYNCUtg375FW6Ny830jFG2ckdQxDepsx2yIP0hGk0iLsCmGGIFQi4bReR1p76zasUQkRjF6Zi0sp — 200 — 337.5 KiB — 49 ms — h2https://www.gao.gov/assets/js/js_I85qGdp_TKYdQ-uQ4y_q8dCb37RENzq5IpgNc0js_CA.js?scope=header&delta=0&language=en&theme=gao_uswds&include=eJxdkNFyhCAMRX-I6Ev_x4kQWdZgGAJ17deXVdqxfQk5XMi9MDN-HeMcZMAnvsx84bv23jKqctDSmQVdb5PwsQTmH8wSg1KnjEvvdpqToVfhsK2jyzUhDx2NR5mq7k6bp9gVQA8tFH_XSFuFU3rWmKDI7YZnmZFBbQ6p6E1ImNFnTA8ARwtWLgAPygLtHY7y7eRnoB2gBXfVFoXLCT6MF_FMU0E_-lb-8_VXfzajOSdOdiUXiuQpbIVaiBJkGy8JrZXsGg9LlqZuzrz9rxR6zvwGH4qZSQwww.gao.gov/assets/js/js_I85qGdp_TK... https://www.gao.gov/assets/js/js_I85qGdp_TKYdQ-uQ4y_q8dCb37RENzq5IpgNc0js_CA.js?scope=header&delta=0&language=en&theme=gao_uswds&include=eJxdkNFyhCAMRX-I6Ev_x4kQWdZgGAJ17deXVdqxfQk5XMi9MDN-HeMcZMAnvsx84bv23jKqctDSmQVdb5PwsQTmH8wSg1KnjEvvdpqToVfhsK2jyzUhDx2NR5mq7k6bp9gVQA8tFH_XSFuFU3rWmKDI7YZnmZFBbQ6p6E1ImNFnTA8ARwtWLgAPygLtHY7y7eRnoB2gBXfVFoXLCT6MF_FMU0E_-lb-8_VXfzajOSdOdiUXiuQpbIVaiBJkGy8JrZXsGg9LlqZuzrz9rxR6zvwGH4qZSQ — 200 — 523 B — 28 ms — h2https://www.gao.gov/modules/contrib/google_tag/js/gtag.js?tdv3cowww.gao.gov/modules/contrib/google_... https://www.gao.gov/modules/contrib/google_tag/js/gtag.js?tdv3co — 200 — 905 B — 42 ms — h2https://www.gao.gov/modules/contrib/google_tag/js/gtm.js?tdv3cowww.gao.gov/modules/contrib/google_... https://www.gao.gov/modules/contrib/google_tag/js/gtm.js?tdv3co — 200 — 829 B — 29 ms — h2https://www.gao.gov/themes/custom/gao_uswds/dist/gao-img/GAO-logo.pngwww.gao.gov/themes/custom/gao_uswds... https://www.gao.gov/themes/custom/gao_uswds/dist/gao-img/GAO-logo.png — 200 — 1.7 KiB — 30 ms — h2https://www.gao.gov/themes/custom/gao_uswds/dist/img/usa-icons-bg/close--white.svgwww.gao.gov/themes/custom/gao_uswds... https://www.gao.gov/themes/custom/gao_uswds/dist/img/usa-icons-bg/close--white.svg — 200 — 456 B — 32 ms — h2https://www.gao.gov/themes/custom/gao_uswds/dist/img/usa-icons-bg/search--white.svgwww.gao.gov/themes/custom/gao_uswds... 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h2https://www.google-analytics.com/j/collect?v=1&_v=j102&a=1527888996&t=pageview&_s=1&dl=https%3A%2F%2Fwww.gao.gov%2F&ul=en-us&dt=U.S.%20Government%20Accountability%20Office%20(U.S.%20GAO)&sr=412x823&vp=412x823&_u=YADAAEABAAAAACAAI~&jid=436761855&gjid=733504742&cid=103662597.1776805327&tid=UA-29643216-1&_gid=1285771069.1776805327&_r=1&_slc=1&gtm=45He64h1h1n81TZMWNH7v830197814za200zd830197814&gcd=13l3l3l2l1l1&dma_cps=a&dma=1&tag_exp=0~115616986~115938466~115938468~117266400&npa=1&z=142305980www.google-analytics.com/j/collect?... 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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 2614ms · 1211KB · $35/mo
www.gao.gov
Other
Costly
Execution 606ms
Transfer 110 KB
Unused 61%
Monthly Cost $8/mo
Unattributable
Other
Costly
Execution 423ms
Transfer 0 KB
Monthly Cost $6/mo
www.gao.gov
Other
Costly
Execution 415ms
Transfer 20 KB
Monthly Cost $6/mo
Google Tag Manager
Tag Manager
Costly
Execution 251ms
Transfer 157 KB
Unused 40%
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Costly
Execution 230ms
Transfer 152 KB
Unused 43%
Monthly Cost $3/mo
www.gao.gov
Other
Costly
Execution 219ms
Transfer 338 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Costly
Execution 201ms
Transfer 134 KB
Unused 47%
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 135ms
Transfer 125 KB
Unused 53%
Monthly Cost $2/mo
Google Analytics
Analytics
Optional
Execution 71ms
Transfer 21 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 65ms
Transfer 155 KB
Unused 70%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.gao.gov adds 606ms and costs ~$8/month
  • Unattributable adds 423ms and costs ~$6/month
  • www.gao.gov adds 415ms and costs ~$6/month
  • Google Tag Manager adds 251ms and costs ~$3/month
  • Google Tag Manager adds 230ms and costs ~$3/month
  • www.gao.gov adds 219ms and costs ~$3/month
  • Google Tag Manager adds 201ms 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.gao.gov takes 606ms 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.gao.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

Unattributable takes 423ms 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.gao.gov takes 415ms 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 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 230ms 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.gao.gov takes 219ms 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 201ms 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

53% 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

70% 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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