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Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
83
GRADE
B
FIX
3
REVIEW
9
PASS
11
INFO
2

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

Mobile Desktop
60
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
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.
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.

3.85 s

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

9.85 s

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

170 ms

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

0.000

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

6.30 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.

9.99 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
25
11 PASS 9 REVIEW 3 FIX
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 (1.5 MiB of 1.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
43 resources · 1.5 MB · 240 KB savings available
FIX
43 resources · 1.5 MB · 240 KB savings available
Warning::
Page weight 1.5 MB exceeds 1 MB target by 540 KB
Got: 1.5 MB Expected: ≤ 1 MB
Info::
~240 KB of savings available
Warning::
42 third-party resources (100% of weight)
43 resources · 1.5 MiB · 42 third-party 540.2 KiB over 1MB target
Image 50% · 777.4 KiB
JavaScript 32% · 503.8 KiB
CSS 10% · 157.1 KiB
Font 6% · 96.6 KiB
Other 1% · 18.8 KiB
Document 1% · 10.5 KiB

~240.0 KiB of savings available

Remove unused JavaScript: 240.0 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
Page Weight Budget
1.5 MB transferred, 43 requests
REVIEW
1.5 MB transferred, 43 requests
Info::
Page weighs 2.8 MB (1.5 MB transferred)
Warning::
JavaScript is 504 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 504 KB
Info::
43 HTTP requests
Info::
Estimated 0.32 g CO2 per page load
1.5 MB / 2.4 MB budget
1.5 MB transferred
43 requests
0.32 g CO2 per page load
Images 771.7 KiB 49%
JavaScript 503.8 KiB 32%
CSS 157.1 KiB 10%
Fonts 57.9 KiB 4%
Other 44.6 KiB 3%
Other 16.1 KiB 1%
HTML 10.3 KiB 1%
Other 2.2 KiB 0%
Other 546 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

B
Image Optimization
14 images, 0 KB saveable
REVIEW
14 images, 0 KB saveable
Info::
All images are well-optimized
14 images 772 KB
0 oversized -0 KB
12 legacy format
0 missing dimensions CLS risk
C
JS Execution Cost
Action
1131ms total JS execution
REVIEW
1131ms total JS execution
Warning::
https://www.gd.com/content/scripts/main-gdms.2026....: 398ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-5RF5...: 239ms CPU time
Info::
Unattributable: 223ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-P7Z...: 167ms CPU time
Info::
https://www.gd.com/: 103ms CPU time
Warning::
Third-party scripts: 908ms (80% of total)

Main Thread Breakdown

Script Evaluation 56% Other 22% Script Parsing & Compilation 9% Style & Layout 7% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.gd.com/content/scripts/main-gdms.2026.4.js398ms325ms28ms3rd
https://www.googletagmanager.com/gtag/js?id=G-5RF5Y1Q0EW&cx=c&gtm=4e68j0239ms175ms43ms3rd
Unattributable223ms7ms0ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-P7ZN6XS167ms127ms36ms3rd
https://www.gd.com/103ms8ms2ms3rd
C
JS Bundles
Action
9 scripts, 240 KB unused
REVIEW
9 scripts, 240 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-5RF5...: 71 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-P7Z...: 62 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gd.com/content/scripts/main-gdms.2026....: 56 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gd.com/content/scripts/vendor.2026.4.j...: 51 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 240 KB
240 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-5RF5Y1Q0EW&cx=c&gtm=4e68j0165 KB71 KB (43%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-P7ZN6XS127 KB62 KB (49%)✓3rd
https://www.gd.com/content/scripts/main-gdms.2026.4.js110 KB56 KB (52%)✓3rd
https://www.gd.com/content/scripts/vendor.2026.4.js64 KB51 KB (83%)✓3rd
https://www.gd.com/layouts/system/VisitorIdentification.js2 KB—✓3rd
https://www.gd.com/content/scripts/runtime.2026.4.js2 KB—✓3rd
https://www.gd.com/content/scripts/global.2026.4.js2 KB—✓3rd
https://www.gd.com/content/scripts/stock-ticker.2026.4.js29 KB—✓3rd
https://www.gd.com/content/scripts/carousel-page-intro.2026.4.js2 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

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
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 (97 KB)
PASS
5 fonts (97 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

97 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 3.9 s LCP 9.9 shttps://www.gd.com/content/fonts/univers/bf8f8741-5f64-4db9-a877-a44624092e68.woff2bf8f8741-5f64-4db9-a877... https://www.gd.com/content/fonts/univers/bf8f8741-5f64-4db9-a877-a44624092e68.woff2 — 18.5 KiB — 57 ms — font-display: swaphttps://www.gd.com/content/fonts/univers/8a711a0d-3f17-4bfe-887b-6229858332b3.woff28a711a0d-3f17-4bfe-887b... https://www.gd.com/content/fonts/univers/8a711a0d-3f17-4bfe-887b-6229858332b3.woff2 — 19.8 KiB — 71 ms — font-display: swaphttps://www.gd.com/content/fonts/univers/9fa24f1f-00d8-4d28-910f-78e925eaead6.woff29fa24f1f-00d8-4d28-910f... https://www.gd.com/content/fonts/univers/9fa24f1f-00d8-4d28-910f-78e925eaead6.woff2 — 19.6 KiB — 64 ms — font-display: swaphttps://www.gd.com/content/fonts/univers/aeb5cbb5-2077-4a57-88d8-1cc1e9c804e8.woff2aeb5cbb5-2077-4a57-88d8... https://www.gd.com/content/fonts/univers/aeb5cbb5-2077-4a57-88d8-1cc1e9c804e8.woff2 — 19.9 KiB — 79 ms — font-display: swaphttps://www.gd.com/content/fonts/univers/58c01d2a-ce4a-4360-a61f-761e91aa67c0.woff258c01d2a-ce4a-4360-a61f... https://www.gd.com/content/fonts/univers/58c01d2a-ce4a-4360-a61f-761e91aa67c0.woff2 — 18.8 KiB — 84 ms — font-display: swap
bf8f8741-5f64-4db9-a877... woff2 swap
Size 19 KB
Load time 57 ms
Start 217 ms
Risk FOUT — text flashes from fallback to web font
8a711a0d-3f17-4bfe-887b... woff2 swap
Size 20 KB
Load time 71 ms
Start 217 ms
Risk FOUT — text flashes from fallback to web font
9fa24f1f-00d8-4d28-910f... woff2 swap
Size 20 KB
Load time 64 ms
Start 218 ms
Risk FOUT — text flashes from fallback to web font
aeb5cbb5-2077-4a57-88d8... woff2 swap
Size 20 KB
Load time 79 ms
Start 225 ms
Risk FOUT — text flashes from fallback to web font
58c01d2a-ce4a-4360-a61f... woff2 swap
Size 19 KB
Load time 84 ms
Start 227 ms
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+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
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
A+
JavaScript Blocking
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
43 requests over 1183ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 3.9 s LCP 9.9 shttps://gd.com// https://gd.com/ — 301 — 146 B — 115 ms — h2https://www.gd.com/www.gd.com/ https://www.gd.com/ — 200 — 10.3 KiB — 91 ms — h2https://www.gd.com/layouts/system/VisitorIdentification.jswww.gd.com/layouts/system/VisitorId... https://www.gd.com/layouts/system/VisitorIdentification.js — 200 — 2.5 KiB — 73 ms — h2https://www.gd.com/content/styles/gd-corporate.2026.4.csswww.gd.com/content/styles/gd-corpor... https://www.gd.com/content/styles/gd-corporate.2026.4.css — 200 — 156.8 KiB — 121 ms — h2https://www.gd.com/content/fonts/univers/bf8f8741-5f64-4db9-a877-a44624092e68.woff2www.gd.com/content/fonts/univers/bf... https://www.gd.com/content/fonts/univers/bf8f8741-5f64-4db9-a877-a44624092e68.woff2 — 200 — 18.5 KiB — 57 ms — h2https://www.gd.com/content/fonts/univers/8a711a0d-3f17-4bfe-887b-6229858332b3.woff2www.gd.com/content/fonts/univers/8a... https://www.gd.com/content/fonts/univers/8a711a0d-3f17-4bfe-887b-6229858332b3.woff2 — 200 — 19.8 KiB — 71 ms — h2https://www.gd.com/content/fonts/univers/9fa24f1f-00d8-4d28-910f-78e925eaead6.woff2www.gd.com/content/fonts/univers/9f... https://www.gd.com/content/fonts/univers/9fa24f1f-00d8-4d28-910f-78e925eaead6.woff2 — 200 — 19.6 KiB — 64 ms — h2https://www.gd.com/content/scripts/runtime.2026.4.jswww.gd.com/content/scripts/runtime.... https://www.gd.com/content/scripts/runtime.2026.4.js — 200 — 2.4 KiB — 94 ms — h2https://www.gd.com/content/scripts/vendor.2026.4.jswww.gd.com/content/scripts/vendor.2... https://www.gd.com/content/scripts/vendor.2026.4.js — 200 — 63.5 KiB — 99 ms — h2https://www.gd.com/content/scripts/global.2026.4.jswww.gd.com/content/scripts/global.2... https://www.gd.com/content/scripts/global.2026.4.js — 200 — 1.9 KiB — 94 ms — h2https://www.gd.com/-/media/gd-corporate/global/gd-logo.ashx?la=en&h=50&w=722&hash=B635D1BB06B5E774525270BECC1AC358www.gd.com/-/media/gd-corporate/glo... https://www.gd.com/-/media/gd-corporate/global/gd-logo.ashx?la=en&h=50&w=722&hash=B635D1BB06B5E774525270BECC1AC358 — 200 — 7.7 KiB — 105 ms — h2https://www.gd.com/-/media/gd-corporate/global/placeholder.ashx?la=en&h=411&w=1440&hash=26C127FB3E861EB9DBA8053821DE79A2www.gd.com/-/media/gd-corporate/glo... https://www.gd.com/-/media/gd-corporate/global/placeholder.ashx?la=en&h=411&w=1440&hash=26C127FB3E861EB9DBA8053821DE79A2 — 200 — 1.9 KiB — 91 ms — h2https://www.gd.com/-/media/gd-corporate/home/office-homepage.ashx?la=en&h=1403&w=2138&hash=B654474984C9E96EEBCDB367B5385547www.gd.com/-/media/gd-corporate/hom... https://www.gd.com/-/media/gd-corporate/home/office-homepage.ashx?la=en&h=1403&w=2138&hash=B654474984C9E96EEBCDB367B5385547 — 200 — 170.6 KiB — 124 ms — h2https://www.gd.com/content/scripts/main-gdms.2026.4.jswww.gd.com/content/scripts/main-gdm... https://www.gd.com/content/scripts/main-gdms.2026.4.js — 200 — 110.0 KiB — 118 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABUAAAAUCAYAAABiS3YzAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJb…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABUAAAAUCAYAAABiS3YzAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJb… — 200 — 0 B — 0 ms — datahttps://www.gd.com/content/scripts/stock-ticker.2026.4.jswww.gd.com/content/scripts/stock-ti... https://www.gd.com/content/scripts/stock-ticker.2026.4.js — 200 — 29.5 KiB — 109 ms — h2https://www.gd.com/content/scripts/carousel-page-intro.2026.4.jswww.gd.com/content/scripts/carousel... https://www.gd.com/content/scripts/carousel-page-intro.2026.4.js — 200 — 2.4 KiB — 101 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-P7ZN6XSwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-P7ZN6XS — 200 — 126.7 KiB — 177 ms — h2https://www.gd.com/-/media/General-Dynamics/Global-Components/favicons/manifest.jsonwww.gd.com/-/media/General-Dynamics... https://www.gd.com/-/media/General-Dynamics/Global-Components/favicons/manifest.json — 200 — 2.2 KiB — 86 ms — h2https://www.gd.com/content/fonts/univers/aeb5cbb5-2077-4a57-88d8-1cc1e9c804e8.woff2www.gd.com/content/fonts/univers/ae... https://www.gd.com/content/fonts/univers/aeb5cbb5-2077-4a57-88d8-1cc1e9c804e8.woff2 — 200 — 19.9 KiB — 79 ms — h2https://www.gd.com/content/fonts/univers/58c01d2a-ce4a-4360-a61f-761e91aa67c0.woff2www.gd.com/content/fonts/univers/58... https://www.gd.com/content/fonts/univers/58c01d2a-ce4a-4360-a61f-761e91aa67c0.woff2 — 200 — 18.8 KiB — 84 ms — h2https://cdn.fonts.net/t/1.css?apiType=css&projectid=23163b7c-5f22-4638-8462-e726b4a9e379cdn.fonts.net/t/1.css?apiType=css&p... https://cdn.fonts.net/t/1.css?apiType=css&projectid=23163b7c-5f22-4638-8462-e726b4a9e379 — 200 — 401 B — 101 ms — h2https://www.googletagmanager.com/gtag/js?id=G-5RF5Y1Q0EW&cx=c&gtm=4e68j0www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-5RF5Y1Q0EW&cx=c&gtm=4e68j0 — 200 — 164.8 KiB — 90 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeCAYAAAA7MK6iAAAAn0lEQVR42u3UMQrDMBBEUZ9WfQqDm…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB4AAAAeCAYAAAA7MK6iAAAAn0lEQVR42u3UMQrDMBBEUZ9WfQqDm… — 200 — 0 B — 0 ms — datahttps://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7RjM0ODhDRTctQzUxOC00NTk2LTlENjMtMzZGMDkwMkQzMTZFfSJ9www.gd.com/API/Global/NavigationSea... https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7RjM0ODhDRTctQzUxOC00NTk2LTlENjMtMzZGMDkwMkQzMTZFfSJ9 — 200 — 2.0 KiB — 41 ms — h2https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7NkZFMEZDM0QtMDc2Ri00NDZFLUFGN0QtM0MyQTc1OEMzNEJGfSJ9www.gd.com/API/Global/NavigationSea... https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7NkZFMEZDM0QtMDc2Ri00NDZFLUFGN0QtM0MyQTc1OEMzNEJGfSJ9 — 200 — 2.5 KiB — 40 ms — h2https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7NkZFMEZDM0QtMDc2Ri00NDZFLUFGN0QtM0MyQTc1OEMzNEJGfSJ9www.gd.com/API/Global/NavigationSea... https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7NkZFMEZDM0QtMDc2Ri00NDZFLUFGN0QtM0MyQTc1OEMzNEJGfSJ9 — 200 — 2.5 KiB — 63 ms — h2https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7M0E5ODIyNzctNTU3Ny00QTI4LUJCQjEtQjRDMDQ1MzgxMUY2fSJ9www.gd.com/API/Global/NavigationSea... https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7M0E5ODIyNzctNTU3Ny00QTI4LUJCQjEtQjRDMDQ1MzgxMUY2fSJ9 — 200 — 2.3 KiB — 38 ms — h2https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7QzRBQzAwNzctNTIzQy00NEI2LUEwQkQtRTc2M0M4QjI3NUMwfSJ9www.gd.com/API/Global/NavigationSea... https://www.gd.com/API/Global/NavigationSearch?request=eyJzdGFydFBhdGgiOiJ7QzRBQzAwNzctNTIzQy00NEI2LUEwQkQtRTc2M0M4QjI3NUMwfSJ9 — 200 — 2.0 KiB — 39 ms — h2https://www.gd.com/API/Global/ArticleSearch?request=eyJwYWdlU2l6ZSI6Niwic3RhcnRQYXRoIjoiMDJlZmNhODEtNmM0MC00MjEzLThhNmMtZTY5NjhmODM4ZmE1IiwidGFncyI6W10sInR5cGVzIjpbXX0%3Dwww.gd.com/API/Global/ArticleSearch... https://www.gd.com/API/Global/ArticleSearch?request=eyJwYWdlU2l6ZSI6Niwic3RhcnRQYXRoIjoiMDJlZmNhODEtNmM0MC00MjEzLThhNmMtZTY5NjhmODM4ZmE1IiwidGFncyI6W10sInR5cGVzIjpbXX0%3D — 200 — 3.1 KiB — 37 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
80% of JavaScript execution is third-party
First-party Third-party 908ms · 412KB · $12/mo
www.gd.com
Other
Costly
Execution 398ms
Transfer 110 KB
Unused 52%
Monthly Cost $5/mo
Google Tag Manager
Tag Manager
Costly
Execution 239ms
Transfer 165 KB
Unused 43%
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 167ms
Transfer 127 KB
Unused 49%
Monthly Cost $2/mo
www.gd.com
Other
Optional
Execution 103ms
Transfer 10 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.gd.com adds 398ms and costs ~$5/month
  • Google Tag Manager adds 239ms and costs ~$3/month

80% 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.gd.com takes 398ms 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 www.gd.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

Google Tag Manager takes 239ms 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

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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