Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
6.20 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
9.66 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
456 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.
7.39 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.
9.66 s
Page Load Progression
FPage Weight BudgetAction33.3 MB transferred, 58 requestsFIX
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction3102ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1408ms | 14ms | 0ms | 1st |
| https://www.rtx.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 577ms | 559ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KTM8HMD | 398ms | 323ms | 56ms | 3rd |
| https://www.rtx.com/ | 252ms | 59ms | 5ms | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/themes/raytheon-technologies/rtx-shared/rtx-theme/scripts/pre-optimized-min.js?rev=424d4a60b5604533b675d952783fc1b1&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260206T150058Z&hash=ACD37A6B44CC065EA416CACE42CAE5E9 | 243ms | 69ms | 3ms | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/base-themes/rtx-core-libraries/scripts/optimized-min.js?rev=4303a737bfcb4f3ca0de89bfd64711ed&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260603T041749Z&hash=8BBED628A0B1AD0C74EC1CA8AC8816E8 | 223ms | 159ms | 49ms | 3rd |
DPage Weight InventoryAction58 resources · 33.3 MB · 263 KB savings availableFIX
~263.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 58 resources | 33.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization15 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CJS BundlesAction13 scripts, 263 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://prd-sc102-cdn.rtx.com/-/media/base-themes/rtx-core-libraries/scripts/optimized-min.js?rev=4303a737bfcb4f3ca0de89bfd64711ed&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260603T041749Z&hash=8BBED628A0B1AD0C74EC1CA8AC8816E8 | 189 KB | 148 KB (79%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KTM8HMD | 145 KB | 67 KB (46%) | ✓ | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/base-themes/rtx-third-party-components-themes/scripts/optimized-min.js?rev=d481a0c91391457b915ee6fb8a80eb00&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260603T041753Z&hash=EDE93899D7A561ADE7C0287AB4B9B0C1 | 63 KB | 48 KB (78%) | ✓ | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/base-themes/scroll-lock/scripts/optimized-min.js?rev=0dbb744c2e794485a1fffec816f738c0&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260603T041752Z&hash=839B660AEC06EBC8F95A1FA3E8E29E1A | 6 KB | — | ✓ | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/base-themes/sc-main-theme-js/scripts/optimized-min.js?rev=34718a84fd96488d9a8367f0bf59ad7b&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260603T041751Z&hash=1FA7D2690986424619DB3641C4B5A807 | 3 KB | — | ✓ | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/base-themes/xa-api/scripts/optimized-min.js?rev=eb099950967444d792198f916d9930f4&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260603T041753Z&hash=97FDA5921C767B30EF35CB48CEB0A5E0 | 2 KB | — | ✓ | 3rd |
| https://www.rtx.com/layouts/system/VisitorIdentification.js | 1 KB | — | ✓ | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/base-themes/rtx-gdpr/scripts/optimized-min.js?rev=35b607dfa52e40629d60cafc896cab26&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260603T041750Z&hash=C7C6F12656992A157A8045A4A95A6792 | 5 KB | — | ✓ | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/themes/raytheon-technologies/rtx-shared/rtx-theme/scripts/pre-optimized-min.js?rev=424d4a60b5604533b675d952783fc1b1&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20260206T150058Z&hash=ACD37A6B44CC065EA416CACE42CAE5E9 | 10 KB | — | ✓ | 3rd |
| https://prd-sc102-cdn.rtx.com/-/media/base-themes/news-template/scripts/pre-optimized-min.js?rev=149b99b68df343b5bd12a21910c39864&rid=fe5d7fdf89c04d999aa3b5fbd009c9f3&t=20230816T105112Z&hash=5F19B63364195BB6D6C68E9D62DDDD02 | 1 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BJavaScript Blocking1 JS blocking issue(s) detectedREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (293 KB)PASS
Web fonts
7
293 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
Optimization checklist
- Preload critical fonts (priority=high)
- Use woff2 format for all fonts
- Set font-display to swap, optional, or fallback
- Subset large fonts (≤100 KB each)
Fixing the unchecked items could save ~24 KB and ~48 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints5 hints, 0 missing preconnectsPASS
Current Resource Hints
5 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server-Timing Observability2 Server-Timing entries advertisedPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall58 requests over 3126msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.rtx.com www.rtx.com | Other | 577ms | 0 KB | — | €9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 398ms | 145 KB | 46% | €6/mo | Costly |
www.rtx.com www.rtx.com | Other | 252ms | 14 KB | — | €4/mo | Costly |
prd-sc102-cdn.rtx.com prd-sc102-cdn.rtx.com | Other | 243ms | 10 KB | — | €4/mo | Costly |
prd-sc102-cdn.rtx.com prd-sc102-cdn.rtx.com | Other | 223ms | 189 KB | 79% | €4/mo | Costly |
These scripts may cost more than they're worth
- www.rtx.com adds 577ms and costs ~€9/month
- Google Tag Manager adds 398ms and costs ~€6/month
- www.rtx.com adds 252ms and costs ~€4/month
- prd-sc102-cdn.rtx.com adds 243ms and costs ~€4/month
- prd-sc102-cdn.rtx.com adds 223ms and costs ~€4/month
55% of JavaScript execution time comes from third-party scripts.
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
www.rtx.com takes 577ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 398ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.rtx.com takes 252ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
prd-sc102-cdn.rtx.com takes 243ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
prd-sc102-cdn.rtx.com takes 223ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
79% of prd-sc102-cdn.rtx.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Image Optimization13 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
13
Total Size
0 KB