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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
69
GRADE
D
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
32
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
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.
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.

4.96 s

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

59.90 s

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

1.41 s

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

0.008

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

9.21 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.

62.17 s

Page Load Progression

664 ms
1.3 s
2.0 s
2.7 s
3.3 s
4.0 s
4.6 s
5.3 s
Checks
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
15.2 MB transferred, 63 requests
FIX
15.2 MB transferred, 63 requests
Critical::
Page weighs 17.7 MB (15.2 MB transferred)
Warning::
Images are 13.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 13.9 MB
Warning::
JavaScript is 1.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.0 MB
Info::
63 HTTP requests
Info::
Estimated 3.2 g CO2 per page load
15.2 MB / 2.4 MB budget
15.2 MB transferred
63 requests
3.2 g CO2 per page load
Images 13.9 MiB 92%
JavaScript 1.0 MiB 7%
Fonts 133.6 KiB 1%
CSS 64.9 KiB 0%
HTML 11.4 KiB 0%
Other 3.9 KiB 0%
Other 837 B 0%
Other 816 B 0%
Other 547 B 0%
Other 0 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

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 (15.2 MiB of 15.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
7415ms total JS execution
FIX
7415ms total JS execution
Warning::
https://www.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/3cGi0kf...: 1784ms CPU time
Warning::
https://www.fda.gov/files/js/js_slZ_u0aWJFEt1cH1Zw...: 1362ms CPU time
Warning::
Unattributable: 1199ms CPU time
Warning::
https://www.fda.gov/: 641ms CPU time
Warning::
https://script.crazyegg.com/pages/versioned/common...: 506ms CPU time
Warning::
Third-party scripts: 7415ms (100% of total)

Main Thread Breakdown

Script Evaluation 49% Other 24% Style & Layout 12% Script Parsing & Compilation 9% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/3cGi0kft0fGDbLz73O/TAtmA10D/KFcZDXYv/bFAB1784ms1281ms93ms3rd
https://www.fda.gov/files/js/js_slZ_u0aWJFEt1cH1Zwii-QyLhaTNBO65LccU3zlOaaM.js?scope=footer&delta=0&language=en&theme=preview&include=eJxdjtEKwzAIRX-oJXsZ7G-CNS4NS6OotHRfv4VB2Pbo8XivmTlXitCgnl7QQv4DkyjthY6QKy9QZ0Mt4jYtzG6uIEFYeCcdoh1F3uM9QUTepBZoSKGvLF4vty_4cR6UirNGamuHGzW3AIisqXCLzrk_ZCurIycaPajwPCnnARLIjzBO5pH2Am1yXpY1362ms479ms57ms3rd
Unattributable1199ms63ms0ms3rd
https://www.fda.gov/641ms160ms2ms3rd
https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js506ms438ms28ms3rd
https://touchpoints.app.cloud.gov/touchpoints/d45bb814.js400ms109ms139ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-M95XGZW392ms298ms89ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L370ms283ms85ms3rd
https://www.googletagmanager.com/gtag/js?id=G-273DTKB5QW283ms174ms85ms3rd
https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=HHS&subagency=FDA&sdor=fda.gov&dclink=true165ms157ms5ms3rd

Showing top 10 of 13 scripts

D
JS Bundles
Action
15 scripts, 436 KB unused
FIX
15 scripts, 436 KB unused
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.fda.gov/files/js/js_slZ_u0aWJFEt1cH1Zw...: 71 KB unused (66%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-273D...: 65 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-M95...: 64 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 62 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 436 KB
436 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64f0147 KB106 KB (72%)✓3rd
https://www.fda.gov/files/js/js_slZ_u0aWJFEt1cH1Zwii-QyLhaTNBO65LccU3zlOaaM.js?scope=footer&delta=0&language=en&theme=preview&include=eJxdjtEKwzAIRX-oJXsZ7G-CNS4NS6OotHRfv4VB2Pbo8XivmTlXitCgnl7QQv4DkyjthY6QKy9QZ0Mt4jYtzG6uIEFYeCcdoh1F3uM9QUTepBZoSKGvLF4vty_4cR6UirNGamuHGzW3AIisqXCLzrk_ZCurIycaPajwPCnnARLIjzBO5pH2Am1yXpY107 KB71 KB (66%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-273DTKB5QW171 KB65 KB (38%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-M95XGZW131 KB64 KB (49%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147 KB62 KB (42%)✓3rd
https://www.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/3cGi0kft0fGDbLz73O/TAtmA10D/KFcZDXYv/bFAB176 KB39 KB (22%)✓3rd
https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js55 KB29 KB (52%)✓3rd
https://script.crazyegg.com/pages/scripts/0024/3700.js3 KB—✓3rd
https://touchpoints.app.cloud.gov/touchpoints/d45bb814.js81 KB—✗3rd
https://dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js4 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
63 resources · 15.2 MB · 436 KB savings available
FIX
63 resources · 15.2 MB · 436 KB savings available
Warning::
Page weight 14.2 MB over 1MB target
Got: 15.2 MB Expected: ≤ 1 MB
Info::
~436 KB of savings available
Warning::
62 third-party resources (100% of weight)
Info::
9 resources over 200KB
63 resources · 15.2 MiB · 62 third-party 14.2 MiB over 1MB target
Image 92% · 13.9 MiB
JavaScript 7% · 1.0 MiB
Font 1% · 133.6 KiB
CSS 0% · 64.9 KiB
Document 0% · 11.4 KiB
Other 0% · 5.3 KiB

~435.8 KiB of savings available

Remove unused JavaScript: 435.8 KiB
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-cache, no-store, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-cache, no-store, must-revalidate

DirectiveValueMeaning
no-cache—Cache but always revalidate first
no-store—Never cache this response
must-revalidate—Must recheck with server after expiry
C
Image Optimization
Action
27 images, 0 KB saveable
REVIEW
27 images, 0 KB saveable
Warning::
https://www.fda.gov/files/futuristic_it_1600x900.p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fda.gov/files/fda-precheck_1200x675.pn... 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.fda.gov/themes/custom/preview/assets/i... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fda.gov/files/FDA%20issues%20draft%20g... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fda.gov/themes/custom/preview/assets/i... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fda.gov/files/fda-launches-framework-f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fda.gov/files/food-dyes-1200x675.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fda.gov/files/lad_1600x900.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fda.gov/files/fda_scientists_working_i... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.fda.gov/files/strengthen_import_safety... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
27 images 13.9 MB
0 oversized -0 KB
27 legacy format
12 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

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

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
4 fonts (134 KB)
PASS
4 fonts (134 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

134 KB total

Render-blocking

0

of 4

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 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s 42.0 s 44.0 s 46.0 s 48.0 s 50.0 s 52.0 s 54.0 s 56.0 s 58.0 s 60.0 s 62.0 s FCP 5.0 s LCP 59.9 shttps://www.fda.gov/themes/custom/preview/fonts/fonts/fontawesome-webfont.woff2?v=4.7.0fontawesome-webfont.woff2 https://www.fda.gov/themes/custom/preview/fonts/fonts/fontawesome-webfont.woff2?v=4.7.0 — 75.4 KiB — 62 ms — font-display: swaphttps://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-400-normal.woff2merriweather-latin-400-... https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-400-normal.woff2 — 19.6 KiB — 295 ms — font-display: swaphttps://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-400-italic.woff2merriweather-latin-400-... https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-400-italic.woff2 — 19.3 KiB — 56 ms — font-display: swaphttps://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-700-normal.woff2merriweather-latin-700-... https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-700-normal.woff2 — 19.3 KiB — 61 ms — font-display: swap
fontawesome-webfont.woff2 woff2 swap
Size 75 KB
Load time 62 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
merriweather-latin-400-... woff2 swap
Size 20 KB
Load time 295 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
merriweather-latin-400-... woff2 swap
Size 19 KB
Load time 56 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
merriweather-latin-700-... woff2 swap
Size 19 KB
Load time 61 ms
Start 1.2 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)
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
63 requests over 2980ms
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 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s 42.0 s 44.0 s 46.0 s 48.0 s 50.0 s 52.0 s 54.0 s 56.0 s 58.0 s 60.0 s 62.0 s FCP 5.0 s LCP 59.9 shttps://fda.gov// https://fda.gov/ — 301 — 132 B — 35 ms — h2https://www.fda.gov/www.fda.gov/ https://www.fda.gov/ — 200 — 11.4 KiB — 163 ms — h2https://www.googletagmanager.com/gtag/js?id=G-273DTKB5QWwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-273DTKB5QW — 200 — 170.9 KiB — 49 ms — h2https://www.fda.gov/files/google_tag/production/google_tag.script.js?tc66tgwww.fda.gov/files/google_tag/produc... https://www.fda.gov/files/google_tag/production/google_tag.script.js?tc66tg — 200 — 570 B — 96 ms — h2https://www.fda.gov/files/css/css_ngvuTsoVGiC8heLt3khKQg-Yfb9hQMlIBChK5jUU1Oo.css?delta=0&language=en&theme=preview&include=eJxNzEsOgzAMBNALpfhIKCEuuJjYtZ0ibt_PAroZPY00M61YKcRGahVbFJZphT8nPzxwg5Idkxq-CHeYWUrmm8fB1Ob0eHa0Y-w01hyoNK1ocDFptjxb1sWhWtfMw9UMvWkvTL5gPf99J_3svnb45bBJ7YzpLhJNAh1OvQFXxk0gwww.fda.gov/files/css/css_ngvuTsoVG... https://www.fda.gov/files/css/css_ngvuTsoVGiC8heLt3khKQg-Yfb9hQMlIBChK5jUU1Oo.css?delta=0&language=en&theme=preview&include=eJxNzEsOgzAMBNALpfhIKCEuuJjYtZ0ibt_PAroZPY00M61YKcRGahVbFJZphT8nPzxwg5Idkxq-CHeYWUrmm8fB1Ob0eHa0Y-w01hyoNK1ocDFptjxb1sWhWtfMw9UMvWkvTL5gPf99J_3svnb45bBJ7YzpLhJNAh1OvQFXxk0g — 200 — 4.7 KiB — 88 ms — h2https://www.fda.gov/files/css/css_heM2VrvP8qpRl-VxjNn-7peZ85q1wzj-un9dG4jmDSA.css?delta=1&language=en&theme=preview&include=eJxNzEsOgzAMBNALpfhIKCEuuJjYtZ0ibt_PAroZPY00M61YKcRGahVbFJZphT8nPzxwg5Idkxq-CHeYWUrmm8fB1Ob0eHa0Y-w01hyoNK1ocDFptjxb1sWhWtfMw9UMvWkvTL5gPf99J_3svnb45bBJ7YzpLhJNAh1OvQFXxk0gwww.fda.gov/files/css/css_heM2VrvP8... https://www.fda.gov/files/css/css_heM2VrvP8qpRl-VxjNn-7peZ85q1wzj-un9dG4jmDSA.css?delta=1&language=en&theme=preview&include=eJxNzEsOgzAMBNALpfhIKCEuuJjYtZ0ibt_PAroZPY00M61YKcRGahVbFJZphT8nPzxwg5Idkxq-CHeYWUrmm8fB1Ob0eHa0Y-w01hyoNK1ocDFptjxb1sWhWtfMw9UMvWkvTL5gPf99J_3svnb45bBJ7YzpLhJNAh1OvQFXxk0g — 200 — 60.3 KiB — 308 ms — h2https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=HHS&subagency=FDA&sdor=fda.gov&dclink=truedap.digitalgov.gov/Universal-Federa... https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=HHS&subagency=FDA&sdor=fda.gov&dclink=true — 200 — 9.4 KiB — 35 ms — h3https://www.fda.gov/themes/custom/preview/assets/images/US_Flag.pngwww.fda.gov/themes/custom/preview/a... https://www.fda.gov/themes/custom/preview/assets/images/US_Flag.png — 200 — 780 B — 98 ms — h2https://www.fda.gov/themes/custom/preview/assets/images/icon-dot-gov.svgwww.fda.gov/themes/custom/preview/a... 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h3https://www.fda.gov/files/js/js_slZ_u0aWJFEt1cH1Zwii-QyLhaTNBO65LccU3zlOaaM.js?scope=footer&delta=0&language=en&theme=preview&include=eJxdjtEKwzAIRX-oJXsZ7G-CNS4NS6OotHRfv4VB2Pbo8XivmTlXitCgnl7QQv4DkyjthY6QKy9QZ0Mt4jYtzG6uIEFYeCcdoh1F3uM9QUTepBZoSKGvLF4vty_4cR6UirNGamuHGzW3AIisqXCLzrk_ZCurIycaPajwPCnnARLIjzBO5pH2Am1yXpYwww.fda.gov/files/js/js_slZ_u0aWJFE... https://www.fda.gov/files/js/js_slZ_u0aWJFEt1cH1Zwii-QyLhaTNBO65LccU3zlOaaM.js?scope=footer&delta=0&language=en&theme=preview&include=eJxdjtEKwzAIRX-oJXsZ7G-CNS4NS6OotHRfv4VB2Pbo8XivmTlXitCgnl7QQv4DkyjthY6QKy9QZ0Mt4jYtzG6uIEFYeCcdoh1F3uM9QUTepBZoSKGvLF4vty_4cR6UirNGamuHGzW3AIisqXCLzrk_ZCurIycaPajwPCnnARLIjzBO5pH2Am1yXpY — 200 — 107.3 KiB — 172 ms — 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370 ms — h3https://touchpoints.app.cloud.gov/touchpoints/d45bb814.jstouchpoints.app.cloud.gov/touchpoin... https://touchpoints.app.cloud.gov/touchpoints/d45bb814.js — 200 — 81.1 KiB — 1.1 s — h2https://dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.jsdap.digitalgov.gov/web-vitals/dist/... https://dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js — 200 — 4.5 KiB — 32 ms — h3https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4Lwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L — 200 — 147.1 KiB — 73 ms — h2https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64f0www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64f0 — 200 — 147.1 KiB — 72 ms — h2https://www.google.nl/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-273DTKB5QW&cid=1935232724.1776362894&gtm=45je64f0v895148502za200zd895148502&rcb=14&aip=1&dma=1&dma_cps=a&gcd=13l3l3l2l3l1&npa=1&frm=0&tag_exp=0~115616986~115938466~115938469~117266400~117384406&z=1031989099www.google.nl/ads/ga-audiences?v=1&... https://www.google.nl/ads/ga-audiences?v=1&t=sr&slf_rd=1&_r=4&tid=G-273DTKB5QW&cid=1935232724.1776362894&gtm=45je64f0v895148502za200zd895148502&rcb=14&aip=1&dma=1&dma_cps=a&gcd=13l3l3l2l3l1&npa=1&frm=0&tag_exp=0~115616986~115938466~115938469~117266400~117384406&z=1031989099 — 200 — 408 B — 70 ms — h2https://www.fda.gov/themes/custom/preview/assets/images/fa-icons.svgwww.fda.gov/themes/custom/preview/a... https://www.fda.gov/themes/custom/preview/assets/images/fa-icons.svg — 200 — 507 B — 271 ms — h3https://script.crazyegg.com/pages/data-scripts/0024/3700/site/www.fda.gov.json?t=1script.crazyegg.com/pages/data-scri... https://script.crazyegg.com/pages/data-scripts/0024/3700/site/www.fda.gov.json?t=1 — 200 — 2.4 KiB — 24 ms — h3https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.jsscript.crazyegg.com/pages/versioned... https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js — 200 — 55.3 KiB — 16 ms — h3https://region1.google-analytics.com/g/collect?v=2&tid=G-CSLL4ZEK4L&gtm=45je64f0v9131934939za200zb895148502zd895148502&_p=1776362893905&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1935232724.1776362894&frm=0&pscdl=noapi&rcb=8&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938468~117266400&dl=https%3A%2F%2Ffda.gov%2F&dt=U.S.%20Food%20and%20Drug%20Administration&dr=&sid=1776362894&sct=1&seg=0&_tu=wA&en=page_view&_fv=1&_ss=1&_ee=1&ep.agency=HHS&ep.subagency=FDA&ep.site_topic=unspecified%3Afda.gov&ep.site_platform=unspecified%3Afda.gov&ep.script_source=https%3A%2F%2Fdap.digitalgov.gov%2Funiversal-federated-analytics-min.js&ep.version=20250702%20v8.7%20-%20ga4&ep.protocol=https%3A&ep.using_parallel_tracker=no&ep.hostname_dimension=fda.gov&tfd=844region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-CSLL4ZEK4L&gtm=45je64f0v9131934939za200zb895148502zd895148502&_p=1776362893905&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1935232724.1776362894&frm=0&pscdl=noapi&rcb=8&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938468~117266400&dl=https%3A%2F%2Ffda.gov%2F&dt=U.S.%20Food%20and%20Drug%20Administration&dr=&sid=1776362894&sct=1&seg=0&_tu=wA&en=page_view&_fv=1&_ss=1&_ee=1&ep.agency=HHS&ep.subagency=FDA&ep.site_topic=unspecified%3Afda.gov&ep.site_platform=unspecified%3Afda.gov&ep.script_source=https%3A%2F%2Fdap.digitalgov.gov%2Funiversal-federated-analytics-min.js&ep.version=20250702%20v8.7%20-%20ga4&ep.protocol=https%3A&ep.using_parallel_tracker=no&ep.hostname_dimension=fda.gov&tfd=844 — 204 — 290 B — 332 ms — h2https://www.fda.gov/themes/custom/preview/img/green-check-sm.pngwww.fda.gov/themes/custom/preview/i... https://www.fda.gov/themes/custom/preview/img/green-check-sm.png — 200 — 2.7 KiB — 320 ms — h3https://www.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/3cGi0kft0fGDbLz73O/TAtmA10D/KFcZDXYv/bFABwww.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/... https://www.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/3cGi0kft0fGDbLz73O/TAtmA10D/KFcZDXYv/bFAB — 201 — 45 B — 344 ms — h3https://www.fda.gov/themes/custom/preview/fonts/fonts/fontawesome-webfont.woff2?v=4.7.0www.fda.gov/themes/custom/preview/f... https://www.fda.gov/themes/custom/preview/fonts/fonts/fontawesome-webfont.woff2?v=4.7.0 — 200 — 75.4 KiB — 62 ms — h3https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-400-normal.woff2www.fda.gov/themes/custom/preview/f... https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-400-normal.woff2 — 200 — 19.6 KiB — 295 ms — h3https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-400-italic.woff2www.fda.gov/themes/custom/preview/f... https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-400-italic.woff2 — 200 — 19.3 KiB — 56 ms — h3https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-700-normal.woff2www.fda.gov/themes/custom/preview/f... https://www.fda.gov/themes/custom/preview/fonts/fonts/merriweather-latin-700-normal.woff2 — 200 — 19.3 KiB — 61 ms — h3https://www.googletagmanager.com/gtm.js?id=GTM-M95XGZWwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-M95XGZW — 200 — 130.5 KiB — 59 ms — h3https://script.crazyegg.com/pages/data-scripts/0024/3700/sampling/www.fda.gov.json?t=1script.crazyegg.com/pages/data-scri... https://script.crazyegg.com/pages/data-scripts/0024/3700/sampling/www.fda.gov.json?t=1 — 200 — 399 B — 25 ms — h3https://tracking.crazyegg.com/clock?u=243700&st=140963&t=1776362894649&tk=c8224c0d1d68e5fe787bef2074ea82fdtracking.crazyegg.com/clock?u=24370... https://tracking.crazyegg.com/clock?u=243700&st=140963&t=1776362894649&tk=c8224c0d1d68e5fe787bef2074ea82fd — 204 — 0 B — 120 ms — h2https://pagestates-tracking.crazyegg.com/healthcheckpagestates-tracking.crazyegg.com/he... https://pagestates-tracking.crazyegg.com/healthcheck — 200 — 461 B — 31 ms — h2https://assets-tracking.crazyegg.com/healthcheckassets-tracking.crazyegg.com/health... https://assets-tracking.crazyegg.com/healthcheck — 200 — 462 B — 32 ms — h2blob:https://www.fda.gov/4d0fe4ab-4644-4fc1-9dde-87e90389f36cwww.fda.gov/4d0fe4ab-4644-4fc1-9dde... blob:https://www.fda.gov/4d0fe4ab-4644-4fc1-9dde-87e90389f36c — 200 — -1 B — 37 ms — blobhttps://tracking.crazyegg.com/clock?u=243700&st=140963&t=1776362894649&tk=c8224c0d1d68e5fe787bef2074ea82fdtracking.crazyegg.com/clock?u=24370... https://tracking.crazyegg.com/clock?u=243700&st=140963&t=1776362894649&tk=c8224c0d1d68e5fe787bef2074ea82fd — 200 — 142 B — 59 ms — h2blob:https://www.fda.gov/f10a154c-24e7-4de9-a88b-e90e1fb5060dwww.fda.gov/f10a154c-24e7-4de9-a88b... blob:https://www.fda.gov/f10a154c-24e7-4de9-a88b-e90e1fb5060d — -1 — 0 B — 0 ms — https://touchpoints.app.cloud.gov/img/usa-icons/unfold_more.svgtouchpoints.app.cloud.gov/img/usa-i... https://touchpoints.app.cloud.gov/img/usa-icons/unfold_more.svg — 200 — 495 B — 412 ms — h2https://touchpoints.app.cloud.gov/img/usa-icons/launch.svgtouchpoints.app.cloud.gov/img/usa-i... https://touchpoints.app.cloud.gov/img/usa-icons/launch.svg — 200 — 609 B — 662 ms — h2https://cg-1b082c1b-3db7-477f-9ca5-bd51a786b41e.s3-us-gov-west-1.amazonaws.com/uploads/form/logo/6295/tag_FDA_logo(2).pngcg-1b082c1b-3db7-477f-9ca5-bd51a786... https://cg-1b082c1b-3db7-477f-9ca5-bd51a786b41e.s3-us-gov-west-1.amazonaws.com/uploads/form/logo/6295/tag_FDA_logo(2).png — 200 — 17.3 KiB — 1.1 s — http/1.1https://touchpoints.app.cloud.gov/img/us_flag_small.pngtouchpoints.app.cloud.gov/img/us_fl... https://touchpoints.app.cloud.gov/img/us_flag_small.png — 200 — 515 B — 163 ms — h2blob:https://www.fda.gov/ef7dcd8b-a814-4473-9615-10448ca3d2b1www.fda.gov/ef7dcd8b-a814-4473-9615... blob:https://www.fda.gov/ef7dcd8b-a814-4473-9615-10448ca3d2b1 — -1 — 0 B — 0 ms — https://www.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/3cGi0kft0fGDbLz73O/TAtmA10D/KFcZDXYv/bFABwww.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/... https://www.fda.gov/nTKB/q8Ri/6s/BZ-3/8P-Q/3cGi0kft0fGDbLz73O/TAtmA10D/KFcZDXYv/bFAB — 201 — 43 B — 229 ms — h3https://www.fda.gov/themes/custom/preview/favicon.icowww.fda.gov/themes/custom/preview/f... https://www.fda.gov/themes/custom/preview/favicon.ico — 200 — 177 B — 54 ms — h3
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 7415ms · 925KB · $98/mo
www.fda.gov
Other
Costly
Execution 1784ms
Transfer 0 KB
Unused 22%
Monthly Cost $24/mo
www.fda.gov
Other
Costly
Execution 1362ms
Transfer 107 KB
Unused 66%
Monthly Cost $18/mo
Unattributable
Other
Costly
Execution 1199ms
Transfer 0 KB
Monthly Cost $16/mo
www.fda.gov
Other
Costly
Execution 641ms
Transfer 11 KB
Monthly Cost $9/mo
script.crazyegg.com
Other
Costly
Execution 506ms
Transfer 55 KB
Unused 52%
Monthly Cost $7/mo
touchpoints.app.cloud.gov
Other
Costly
Execution 400ms
Transfer 81 KB
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 392ms
Transfer 131 KB
Unused 49%
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 370ms
Transfer 147 KB
Unused 42%
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 283ms
Transfer 171 KB
Unused 38%
Monthly Cost $4/mo
dap.digitalgov.gov
Other
Optional
Execution 165ms
Transfer 9 KB
Monthly Cost $2/mo
dap.digitalgov.gov
Other
Optional
Execution 149ms
Transfer 4 KB
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 108ms
Transfer 147 KB
Unused 72%
Monthly Cost $1/mo
www.fda.gov
Other
Optional
Execution 57ms
Transfer 60 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.fda.gov adds 1784ms and costs ~$24/month
  • www.fda.gov adds 1362ms and costs ~$18/month
  • Unattributable adds 1199ms and costs ~$16/month
  • www.fda.gov adds 641ms and costs ~$9/month
  • script.crazyegg.com adds 506ms and costs ~$7/month
  • touchpoints.app.cloud.gov adds 400ms and costs ~$5/month
  • Google Tag Manager adds 392ms and costs ~$5/month
  • Google Tag Manager adds 370ms and costs ~$5/month
  • Google Tag Manager adds 283ms 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.fda.gov takes 1784ms 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.fda.gov takes 1362ms 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

66% of www.fda.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 1199ms 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.fda.gov takes 641ms 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

script.crazyegg.com takes 506ms 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

52% of script.crazyegg.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

touchpoints.app.cloud.gov takes 400ms 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 392ms 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 370ms 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 283ms 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

72% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

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

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