Performance
· 17 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.
2.52 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
58.64 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.36 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.065
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
9.37 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.
59.87 s
Page Load Progression
FPage Weight BudgetAction13.7 MB transferred, 108 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 CostAction10830ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://players.brightcove.net/800000612001/zgcyiKu6s_default/index.min.js | 3672ms | 2274ms | 187ms | 3rd |
| https://www.boeing.com/ | 1977ms | 52ms | 5ms | 3rd |
| Unattributable | 1665ms | 212ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-T6NQQT | 968ms | 496ms | 410ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MH9RR8X>m=4e64h1 | 682ms | 582ms | 78ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 597ms | 398ms | 113ms | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/clientlibs/clientlib-version2.min.js | 420ms | 277ms | 27ms | 3rd |
| https://www.boeing.com/etc.clientlibs/core/wcm/components/commons/datalayer/v2/clientlibs/core.wcm.components.commons.datalayer.v2.min.js | 351ms | 298ms | 1ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/otSDKStub.js | 190ms | 170ms | 7ms | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/components/card-carousel/clientlibs/swiper.min.js | 122ms | 16ms | 67ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction21 scripts, 460 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 | 181 KB | 77 KB (42%) | ✓ | 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=4e64h1 | 141 KB | 62 KB (44%) | ✓ | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/components/card-carousel/clientlibs/swiper.min.js | 63 KB | 41 KB (66%) | ✗ | 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-version2.min.js | 51 KB | 31 KB (63%) | ✓ | 3rd |
| https://www.boeing.com/etc.clientlibs/theboeingcompany/clientlibs/clientlib-jquery.min.js | 31 KB | 22 KB (71%) | ✓ | 3rd |
| https://www.boeing.com/etc.clientlibs/core/wcm/components/commons/site/clientlibs/container.min.js | 1 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 InventoryAction108 resources · 13.7 MB · 460 KB savings availableFIX
~459.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 108 resources | 13.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization53 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
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+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall108 requests over 3302msINFO
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 | 3672ms | 295 KB | 44% | $49/mo | Costly |
www.boeing.com www.boeing.com | Other | 1977ms | 31 KB | — | $26/mo | Costly |
Unattributable Unattributable | Other | 1665ms | 0 KB | — | $22/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 968ms | 181 KB | 42% | $13/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 682ms | 141 KB | 44% | $9/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 597ms | 124 KB | 53% | $8/mo | Essential |
www.boeing.com www.boeing.com | Other | 420ms | 51 KB | 63% | $6/mo | Costly |
www.boeing.com www.boeing.com | Other | 351ms | 1 KB | — | $5/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 190ms | 9 KB | — | $3/mo | Essential |
www.boeing.com www.boeing.com | Other | 122ms | 63 KB | 66% | $2/mo | Optional |
www.boeing.com www.boeing.com | Other | 74ms | 31 KB | 71% | $1/mo | Optional |
www.boeing.com www.boeing.com | Other | 59ms | 20 KB | — | $1/mo | Optional |
www.boeing.com www.boeing.com | Other | 53ms | 44 KB | 76% | $1/mo | Optional |
These scripts may cost more than they're worth
- players.brightcove.net adds 3672ms and costs ~$49/month
- www.boeing.com adds 1977ms and costs ~$26/month
- Unattributable adds 1665ms and costs ~$22/month
- Google Tag Manager adds 968ms and costs ~$13/month
- Google Tag Manager adds 682ms and costs ~$9/month
- www.boeing.com adds 420ms and costs ~$6/month
- www.boeing.com adds 351ms and costs ~$5/month
100% 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 3672ms 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 1977ms 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
Unattributable takes 1665ms 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 968ms 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 682ms 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 420ms 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
63% 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
www.boeing.com takes 351ms 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
66% 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
71% 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
76% 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