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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
3
REVIEW
4
PASS
6
INFO
2

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

Mobile Desktop
88
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.
85
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.

1.13 s

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

1.86 s

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

88 ms

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

0.001

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

1.50 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

2.58 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
6 PASS 4 REVIEW 3 FIX
D
Page Weight Budget
Action
2.2 MB transferred, 40 requests
FIX
2.2 MB transferred, 40 requests
Info::
Page weighs 4.4 MB (2.2 MB transferred)
Warning::
JavaScript is 1.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.1 MB
Info::
40 HTTP requests
Info::
Estimated 0.45 g CO2 per page load
2.2 MB / 2.4 MB budget
2.2 MB transferred
40 requests
0.45 g CO2 per page load
JavaScript 1.1 MiB 49%
Images 885.7 KiB 40%
Fonts 73.8 KiB 3%
Other 66.6 KiB 3%
HTML 58.5 KiB 3%
CSS 41.6 KiB 2%
Other 833 B 0%
Other 552 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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
JS Bundles
Action
9 scripts, 305 KB unused
FIX
9 scripts, 305 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://bea.gov/sites/default/files/js/js_EYBW8o2t...: 74 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-J469...: 62 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 305 KB
305 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L&cx=c&gtm=4e64k0h1147 KB106 KB (72%)✓3rd
https://bea.gov/sites/default/files/js/js_EYBW8o2tjUzW6IQtELN0a2YdvpRmDFkJI7JeOxL-E3o.js?scope=footer&delta=0&language=en&theme=beagov_theme&include=eJx1TdsOwiAM_SEGn0RKVhja0YZWNv_exSw6H3w5OdeczM1gQ-UVQ_5yr6O4_D_zutTVJWZT6yDhw6J0jLVVcwmh8Ii24DEvxAloUntSbeU3m8FgMkiE6nC3o3APc38IkD_l5UhYeGC_OMZMVsWNipuGN3q4wf4CE_NWYg104 KB74 KB (72%)✓1st
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147 KB63 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-J4698JNNFT162 KB62 KB (39%)✓3rd
https://use.fontawesome.com/releases/v6.4.2/js/all.js496 KB—✓3rd
https://use.fontawesome.com/releases/v6.4.2/js/v4-shims.js9 KB—✓3rd
https://search.bea.gov/javascripts/remote.loader.js0 KB—✓3rd
https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=DOC&subagency=BEA9 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

D
Page Weight Inventory
Action
40 resources · 2.2 MB · 305 KB savings available
FIX
40 resources · 2.2 MB · 305 KB savings available
Warning::
Page weight 1.2 MB over 1MB target
Got: 2.2 MB Expected: ≤ 1 MB
Info::
~305 KB of savings available
Warning::
17 third-party resources (47% of weight)
Info::
1 resources over 200KB
40 resources · 2.2 MiB · 17 third-party 1.2 MiB over 1MB target
JavaScript 49% · 1.1 MiB
Image 43% · 952.3 KiB
Font 3% · 73.8 KiB
Document 3% · 58.5 KiB
CSS 2% · 41.6 KiB
Other 0% · 1.4 KiB

~305.5 KiB of savings available

Remove unused JavaScript: 305.5 KiB
B
Third-Party Impact
47% third-party, 0 ms blocking
REVIEW
47% third-party, 0 ms blocking
Info::
Third-party code accounts for 47% of page weight (1.0 MiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
53%
47%
First-party Third-party
C
Image Optimization
Action
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://bea.gov/sites/default/files/favicon-57.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bea.gov/sites/default/files/survey.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bea.gov/sites/default/files/keyboard-newsp... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bea.gov/sites/default/files/code-view.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://bea.gov/sites/default/files/capitol-dome.p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 886 KB
0 oversized -0 KB
18 legacy format
5 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

B
JS Execution Cost
724ms total JS execution
REVIEW
724ms total JS execution
Info::
https://bea.gov/: 187ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-J469...: 155ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 121ms CPU time
Info::
Unattributable: 104ms CPU time
Info::
https://use.fontawesome.com/releases/v6.4.2/js/all...: 88ms CPU time
Warning::
Third-party scripts: 469ms (65% of total)

Main Thread Breakdown

Script Evaluation 44% Style & Layout 18% Script Parsing & Compilation 17% Other 14%
ScriptTotalScriptingParse/CompileParty
https://bea.gov/187ms3ms1ms1st
https://www.googletagmanager.com/gtag/js?id=G-J4698JNNFT155ms123ms28ms3rd
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L121ms99ms21ms3rd
Unattributable104ms4ms0ms3rd
https://use.fontawesome.com/releases/v6.4.2/js/all.js88ms23ms62ms3rd
https://bea.gov/sites/default/files/js/js_EYBW8o2tjUzW6IQtELN0a2YdvpRmDFkJI7JeOxL-E3o.js?scope=footer&delta=0&language=en&theme=beagov_theme&include=eJx1TdsOwiAM_SEGn0RKVhja0YZWNv_exSw6H3w5OdeczM1gQ-UVQ_5yr6O4_D_zutTVJWZT6yDhw6J0jLVVcwmh8Ii24DEvxAloUntSbeU3m8FgMkiE6nC3o3APc38IkD_l5UhYeGC_OMZMVsWNipuGN3q4wf4CE_NWYg68ms49ms13ms1st
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
5 fonts (74 KB)
PASS
5 fonts (74 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

74 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s FCP 1.1 s LCP 1.9 shttps://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2S6uyw4BMUTPHjx4wXiWtFCc... https://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2 — 13.7 KiB — 11 ms — font-display: swaphttps://fonts.gstatic.com/s/lato/v25/S6u9w4BMUTPHh6UVSwiPGQ3q5d0.woff2S6u9w4BMUTPHh6UVSwiPGQ3... https://fonts.gstatic.com/s/lato/v25/S6u9w4BMUTPHh6UVSwiPGQ3q5d0.woff2 — 13.9 KiB — 15 ms — font-display: swaphttps://bea.gov/themes/custom/beagov_theme/bootstrap/assets/fonts/bootstrap/glyphicons-halflings-regular.woff2glyphicons-halflings-re... https://bea.gov/themes/custom/beagov_theme/bootstrap/assets/fonts/bootstrap/glyphicons-halflings-regular.woff2 — 18.1 KiB — 409 ms — font-display: swaphttps://fonts.gstatic.com/s/lato/v25/S6u9w4BMUTPHh7USSwiPGQ3q5d0.woff2S6u9w4BMUTPHh7USSwiPGQ3... https://fonts.gstatic.com/s/lato/v25/S6u9w4BMUTPHh7USSwiPGQ3q5d0.woff2 — 13.6 KiB — 16 ms — font-display: swaphttps://fonts.gstatic.com/s/lato/v25/S6u8w4BMUTPHjxsAXC-qNiXg7Q.woff2S6u8w4BMUTPHjxsAXC-qNiX... https://fonts.gstatic.com/s/lato/v25/S6u8w4BMUTPHjxsAXC-qNiXg7Q.woff2 — 14.5 KiB — 13 ms — font-display: swap
S6uyw4BMUTPHjx4wXiWtFCc... woff2 swap
Size 14 KB
Load time 11 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
S6u9w4BMUTPHh6UVSwiPGQ3... woff2 swap
Size 14 KB
Load time 15 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
glyphicons-halflings-re... woff2 swap
Size 18 KB
Load time 409 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
S6u9w4BMUTPHh7USSwiPGQ3... woff2 swap
Size 14 KB
Load time 16 ms
Start 1.0 s
Risk FOUT — text flashes from fallback to web font
S6u8w4BMUTPHjxsAXC-qNiX... woff2 swap
Size 15 KB
Load time 13 ms
Start 1.0 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+
HTTP Caching
max-age=60 (1 minute)
PASS
max-age=60 (1 minute)
Info::
Cache-Control header is set
Got: max-age=60, public
Info::
Effective TTL: 1 minute (max-age=60)
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

max-age=60, public

DirectiveValueMeaning
max-age60Cache for 1 minute
public—Any cache may store this response
Effective TTL: 60 seconds
Network Waterfall
40 requests over 1872ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.1 s LCP 1.9 shttps://bea.gov// https://bea.gov/ — 200 — 58.5 KiB — 548 ms — h2https://bea.gov/sites/default/files/css/css_tJr4aN11IpXedxp-W_QF7AthBgeJ8HfAhzTQPFpwvKQ.css?delta=0&language=en&theme=beagov_theme&include=eJxVilsOgzAMBC8UyJHQpllSioMRNq_bt0L0g5-RdnbsNGeNCcaQiKJb529Wxl4nt6cqognSmJ8yTOX5ZTgaRxJa4OG_YIx5WWdIe8-wDdwtXmyr5lUYXrrwn-GD4wtw-Tcf/sites/default/files/css/css_tJr4aN... https://bea.gov/sites/default/files/css/css_tJr4aN11IpXedxp-W_QF7AthBgeJ8HfAhzTQPFpwvKQ.css?delta=0&language=en&theme=beagov_theme&include=eJxVilsOgzAMBC8UyJHQpllSioMRNq_bt0L0g5-RdnbsNGeNCcaQiKJb529Wxl4nt6cqognSmJ8yTOX5ZTgaRxJa4OG_YIx5WWdIe8-wDdwtXmyr5lUYXrrwn-GD4wtw-Tcf — 200 — 2.2 KiB — 376 ms — h2https://fonts.googleapis.com/css?family=Lato:300,400,400i,700fonts.googleapis.com/css?family=Lat... https://fonts.googleapis.com/css?family=Lato:300,400,400i,700 — 200 — 948 B — 23 ms — h2https://bea.gov/sites/default/files/css/css_2irpPHIHoxAfPaqzcB7Yj1iy0owG_qIFB539RsWYX2M.css?delta=2&language=en&theme=beagov_theme&include=eJxVilsOgzAMBC8UyJHQpllSioMRNq_bt0L0g5-RdnbsNGeNCcaQiKJb529Wxl4nt6cqognSmJ8yTOX5ZTgaRxJa4OG_YIx5WWdIe8-wDdwtXmyr5lUYXrrwn-GD4wtw-Tcf/sites/default/files/css/css_2irpPH... https://bea.gov/sites/default/files/css/css_2irpPHIHoxAfPaqzcB7Yj1iy0owG_qIFB539RsWYX2M.css?delta=2&language=en&theme=beagov_theme&include=eJxVilsOgzAMBC8UyJHQpllSioMRNq_bt0L0g5-RdnbsNGeNCcaQiKJb529Wxl4nt6cqognSmJ8yTOX5ZTgaRxJa4OG_YIx5WWdIe8-wDdwtXmyr5lUYXrrwn-GD4wtw-Tcf — 200 — 38.4 KiB — 495 ms — h2https://bea.gov/sites/default/files/favicon-57.png/sites/default/files/favicon-57.png https://bea.gov/sites/default/files/favicon-57.png — 200 — 1001 B — 370 ms — h2https://bea.gov/sites/default/files/survey.png/sites/default/files/survey.png https://bea.gov/sites/default/files/survey.png — 200 — 93.7 KiB — 543 ms — h2https://bea.gov/sites/default/files/keyboard-newspaper.png/sites/default/files/keyboard-newsp... https://bea.gov/sites/default/files/keyboard-newspaper.png — 200 — 126.7 KiB — 340 ms — h2https://bea.gov/sites/default/files/capitol-dome.png/sites/default/files/capitol-dome.p... https://bea.gov/sites/default/files/capitol-dome.png — 200 — 154.7 KiB — 290 ms — h2https://bea.gov/sites/default/files/code-view.png/sites/default/files/code-view.png https://bea.gov/sites/default/files/code-view.png — 200 — 119.9 KiB — 343 ms — h2https://bea.gov/sites/default/files/js/js_EYBW8o2tjUzW6IQtELN0a2YdvpRmDFkJI7JeOxL-E3o.js?scope=footer&delta=0&language=en&theme=beagov_theme&include=eJx1TdsOwiAM_SEGn0RKVhja0YZWNv_exSw6H3w5OdeczM1gQ-UVQ_5yr6O4_D_zutTVJWZT6yDhw6J0jLVVcwmh8Ii24DEvxAloUntSbeU3m8FgMkiE6nC3o3APc38IkD_l5UhYeGC_OMZMVsWNipuGN3q4wf4CE_NWYg/sites/default/files/js/js_EYBW8o2t... https://bea.gov/sites/default/files/js/js_EYBW8o2tjUzW6IQtELN0a2YdvpRmDFkJI7JeOxL-E3o.js?scope=footer&delta=0&language=en&theme=beagov_theme&include=eJx1TdsOwiAM_SEGn0RKVhja0YZWNv_exSw6H3w5OdeczM1gQ-UVQ_5yr6O4_D_zutTVJWZT6yDhw6J0jLVVcwmh8Ii24DEvxAloUntSbeU3m8FgMkiE6nC3o3APc38IkD_l5UhYeGC_OMZMVsWNipuGN3q4wf4CE_NWYg — 200 — 104.0 KiB — 227 ms — h2https://use.fontawesome.com/releases/v6.4.2/js/all.jsuse.fontawesome.com/releases/v6.4.2... https://use.fontawesome.com/releases/v6.4.2/js/all.js — 200 — 495.9 KiB — 81 ms — h2https://use.fontawesome.com/releases/v6.4.2/js/v4-shims.jsuse.fontawesome.com/releases/v6.4.2... https://use.fontawesome.com/releases/v6.4.2/js/v4-shims.js — 200 — 8.7 KiB — 52 ms — h2https://www.googletagmanager.com/gtag/js?id=G-J4698JNNFTwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-J4698JNNFT — 200 — 162.0 KiB — 64 ms — h2https://search.bea.gov/javascripts/remote.loader.jssearch.bea.gov/javascripts/remote.l... https://search.bea.gov/javascripts/remote.loader.js — -1 — 0 B — 298 ms — https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=DOC&subagency=BEAdap.digitalgov.gov/Universal-Federa... https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=DOC&subagency=BEA — 200 — 9.4 KiB — 29 ms — h3https://bea.gov/sites/default/files/bea-logo-full-horz.svg/sites/default/files/bea-logo-full-... https://bea.gov/sites/default/files/bea-logo-full-horz.svg — 200 — 119.4 KiB — 617 ms — h2https://bea.gov/sites/default/files/bullet-orange.png/sites/default/files/bullet-orange.... https://bea.gov/sites/default/files/bullet-orange.png — 200 — 18.3 KiB — 400 ms — h2https://bea.gov/sites/default/files/logo-x-600-blue-dark.png/sites/default/files/logo-x-600-blu... https://bea.gov/sites/default/files/logo-x-600-blue-dark.png — 200 — 33.8 KiB — 499 ms — h2https://bea.gov/sites/default/files/logo-linkedin-600-blue-dark.png/sites/default/files/logo-linkedin-... https://bea.gov/sites/default/files/logo-linkedin-600-blue-dark.png — 200 — 20.0 KiB — 464 ms — h2https://bea.gov/sites/default/files/logo-youtube-600-blue-dark.png/sites/default/files/logo-youtube-6... https://bea.gov/sites/default/files/logo-youtube-600-blue-dark.png — 200 — 15.4 KiB — 427 ms — h2https://bea.gov/sites/default/files/logo-instagram-600-blue-dark.png/sites/default/files/logo-instagram... https://bea.gov/sites/default/files/logo-instagram-600-blue-dark.png — 200 — 34.6 KiB — 489 ms — h2https://bea.gov/sites/default/files/logo-facebook-600-blue-dark.png/sites/default/files/logo-facebook-... https://bea.gov/sites/default/files/logo-facebook-600-blue-dark.png — 200 — 26.5 KiB — 478 ms — h2https://bea.gov/sites/default/files/logo-x-600-white.png/sites/default/files/logo-x-600-whi... https://bea.gov/sites/default/files/logo-x-600-white.png — 200 — 29.6 KiB — 479 ms — h2https://bea.gov/sites/default/files/logo-linkedin-600-white.png/sites/default/files/logo-linkedin-... https://bea.gov/sites/default/files/logo-linkedin-600-white.png — 200 — 19.9 KiB — 463 ms — h2https://bea.gov/sites/default/files/logo-youtube-600-white.png/sites/default/files/logo-youtube-6... https://bea.gov/sites/default/files/logo-youtube-600-white.png — 200 — 13.7 KiB — 396 ms — h2https://bea.gov/sites/default/files/logo-instagram-600-white.png/sites/default/files/logo-instagram... https://bea.gov/sites/default/files/logo-instagram-600-white.png — 200 — 32.5 KiB — 491 ms — h2https://bea.gov/sites/default/files/logo-facebook-600-white.png/sites/default/files/logo-facebook-... https://bea.gov/sites/default/files/logo-facebook-600-white.png — 200 — 25.6 KiB — 478 ms — h2https://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2fonts.gstatic.com/s/lato/v25/S6uyw4... https://fonts.gstatic.com/s/lato/v25/S6uyw4BMUTPHjx4wXiWtFCc.woff2 — 200 — 13.7 KiB — 11 ms — h3https://fonts.gstatic.com/s/lato/v25/S6u9w4BMUTPHh6UVSwiPGQ3q5d0.woff2fonts.gstatic.com/s/lato/v25/S6u9w4... https://fonts.gstatic.com/s/lato/v25/S6u9w4BMUTPHh6UVSwiPGQ3q5d0.woff2 — 200 — 13.9 KiB — 15 ms — h3https://bea.gov/themes/custom/beagov_theme/bootstrap/assets/fonts/bootstrap/glyphicons-halflings-regular.woff2/themes/custom/beagov_theme/bootstr... https://bea.gov/themes/custom/beagov_theme/bootstrap/assets/fonts/bootstrap/glyphicons-halflings-regular.woff2 — 200 — 18.1 KiB — 409 ms — h2
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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
65% of JavaScript execution is third-party
First-party Third-party 469ms · 805KB · $6/mo
Google Tag Manager
Tag Manager
Optional
Execution 155ms
Transfer 162 KB
Unused 39%
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 121ms
Transfer 147 KB
Unused 43%
Monthly Cost $2/mo
Unattributable
Other
Optional
Execution 104ms
Transfer 0 KB
Monthly Cost $1/mo
use.fontawesome.com
Other
Optional
Execution 88ms
Transfer 496 KB
Monthly Cost $1/mo

65% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

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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