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.
2.46 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
52.91 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
824 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.097
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
11.30 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.
54.73 s
Page Load Progression
FPage Weight BudgetAction13.8 MB transferred, 116 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
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
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction6159ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://players.brightcove.net/800000612001/zgcyiKu6s_default/index.min.js | 1832ms | 1063ms | 104ms | 3rd |
| https://www.boeing.com/ | 1279ms | 16ms | 4ms | 3rd |
| Unattributable | 1088ms | 129ms | 0ms | 1st |
| https://www.googletagmanager.com/gtm.js?id=GTM-T6NQQT | 647ms | 453ms | 179ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MH9RR8X>m=4e6781 | 451ms | 371ms | 34ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 321ms | 220ms | 51ms | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/clientlibs/clientlib-version2.min.js | 225ms | 156ms | 16ms | 3rd |
| https://www.boeing.com/etc.clientlibs/core/wcm/components/commons/datalayer/v2/clientlibs/core.wcm.components.commons.datalayer.v2.min.js | 173ms | 151ms | 1ms | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/components/card-carousel/clientlibs/swiper.min.js | 75ms | 8ms | 31ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/otSDKStub.js | 68ms | 58ms | 2ms | 3rd |
FJS BundlesAction21 scripts, 462 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://players.brightcove.net/800000612001/zgcyiKu6s_default/index.min.js | 295 KB | 129 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-T6NQQT | 183 KB | 78 KB (43%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 124 KB | 66 KB (53%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MH9RR8X>m=4e6781 | 143 KB | 60 KB (42%) | ✓ | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/components/card-carousel/clientlibs/swiper.min.js | 63 KB | 42 KB (67%) | ✗ | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/clientlibs/clientlib-version2.min.js | 53 KB | 34 KB (64%) | ✓ | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/clientlibs/clientlib-bootstrap.min.js | 44 KB | 33 KB (76%) | ✗ | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/clientlibs/clientlib-jquery.min.js | 31 KB | 22 KB (71%) | ✓ | 3rd |
| https://rum.hlx.page/.rum/@adobe/helix-rum-js@%5E2/dist/rum-standalone.js | 3 KB | — | ✓ | 3rd |
| https://www.boeing.com/etc.clientlibs/core/wcm/components/commons/datalayer/acdl/core.wcm.components.commons.datalayer.acdl.min.js | 12 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
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
FPage Weight InventoryAction116 resources · 13.8 MB · 462 KB savings availableFIX
~462.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 116 resources | 13.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization61 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
BCSS Performance Depth2 CSS depth issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (4561 KB)PASS
Web fonts
6
4561 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- 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 ~2298 KB and ~4596 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall116 requests over 2617msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
players.brightcove.net players.brightcove.net | Other | 1832ms | 295 KB | 44% | $24/mo | Costly |
www.boeing.com www.boeing.com | Other | 1279ms | 32 KB | — | $17/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 647ms | 183 KB | 43% | $9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 451ms | 143 KB | 42% | $6/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 321ms | 124 KB | 53% | $4/mo | Essential |
www.boeing.com www.boeing.com | Other | 225ms | 53 KB | 64% | $3/mo | Costly |
www.boeing.com www.boeing.com | Other | 173ms | 1 KB | — | $2/mo | Optional |
www.boeing.com www.boeing.com | Other | 75ms | 63 KB | 67% | $1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 68ms | 9 KB | — | $1/mo | Essential |
These scripts may cost more than they're worth
- players.brightcove.net adds 1832ms and costs ~$24/month
- www.boeing.com adds 1279ms and costs ~$17/month
- Google Tag Manager adds 647ms and costs ~$9/month
- Google Tag Manager adds 451ms and costs ~$6/month
- www.boeing.com adds 225ms and costs ~$3/month
82% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
players.brightcove.net takes 1832ms 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.boeing.com takes 1279ms 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 647ms 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 451ms 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
53% of OneTrust'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
www.boeing.com takes 225ms 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
64% of www.boeing.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
67% of www.boeing.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 Optimization75 images, 5872 KB total, 307 KB wastedINFO
Image Optimization Audit
Total Images
75
Total Size
5872 KB
Oversized
2
Wasted
307 KB