Performance
· 15 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.
1.29 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.41 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.006
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.32 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.
1.41 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization10 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
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
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
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
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
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
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
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
BJS Bundles21 scripts, 70 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://support.microsoft.com/lib/ucs/dist/ucsCreativeService.js?v=RNwXI4r6IRH1mrd2dPPGZEYOQnUcs8HAddnyceXlw88 | 171 KB | 70 KB (41%) | ✓ | 3rd |
| https://support.microsoft.com/js/feedback.js?v=vbvaO9lwMf9by3a0J9Ls2cRheSLDhg9mLlH7GKxcxZE | 5 KB | — | ✓ | 3rd |
| https://support.microsoft.com/lib/uhf/dist/uhfbundle.js?v=of4Bk4iHW2lu2zc7UaUcCo47rVLNSJYX0ELAcivbHkg | 33 KB | — | ✓ | 3rd |
| https://support.microsoft.com/js/TabControl.min.js?v=xwEBryftfVeCnZQEcMrHh70Rw7qWo5RBGAM65Ie6n9E | 2 KB | — | ✓ | 3rd |
| https://support.microsoft.com/js/Support.Main.min.js?v=YU-6bvuqYbPuSFcD3H71b99Qvws9rMxWNkcd7L9swS8 | 20 KB | — | ✓ | 3rd |
| https://support.microsoft.com/js/shimmerExperiment.Main.min.js?v=srYmQ6fE_kpOEpNK2BnwKTzAAYG3jYCRr__zYXzrlrE | 1 KB | — | ✓ | 3rd |
| https://support.microsoft.com/js/PromotionBanner.Main.min.js?v=L5uqa_k2RJ-HMTc-1sGuT8cNiSOmXFt-TdJ2y-WkLGI | 2 KB | — | ✓ | 3rd |
| https://support.microsoft.com/lib/oneds/dist/ms.analytics-web-4.0.2.min.js?v=O7wAAOKAVN2-OLLnoh3KjWb9pW6khEi85GWLxrUYqXA | 54 KB | — | ✓ | 3rd |
| https://mem.gfx.ms/meversion?partner=SMCConvergence&market=en-us&uhf=1 | 10 KB | — | ✓ | 3rd |
| https://support.microsoft.com/lib/jquery/dist/jquery.min.js?v=9_aliU8dGd2tb6OSsuzixeV4y_faTqgFtohetphbbj0 | 30 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
APage Weight Budget1.0 MB transferred, 82 requestsPASS
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
A+Text CompressionAll text resources are compressedPASS
A+JS Execution Cost425ms total JS executionPASS
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://support.microsoft.com/en-us/windows/what-does-it-mean-if-windows-isn-t-supported-08f3b92d-7539-671e-1452-2e71cdad18b5 | 165ms | 30ms | 2ms | 3rd |
| https://support.microsoft.com/lib/jquery/dist/jquery.min.js?v=9_aliU8dGd2tb6OSsuzixeV4y_faTqgFtohetphbbj0 | 105ms | 87ms | 4ms | 3rd |
| Unattributable | 83ms | 1ms | 0ms | 3rd |
| https://support.microsoft.com/lib/ucs/dist/ucsCreativeService.js?v=RNwXI4r6IRH1mrd2dPPGZEYOQnUcs8HAddnyceXlw88 | 71ms | 58ms | 10ms | 3rd |
A+Font Loading6 fonts (183 KB)PASS
Web fonts
6
183 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
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 ~8 KB and ~16 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
APage Weight Inventory82 resources · 1.0 MB · 70 KB savings availablePASS
~70.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 82 resources | 1.0 MiB | ||||||
Network Waterfall82 requests over 3815msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
support.microsoft.com support.microsoft.com | Other | 165ms | 156 KB | — | $1/mo | Optional |
support.microsoft.com support.microsoft.com | Other | 105ms | 30 KB | — | $1/mo | Optional |
Unattributable Unattributable | Other | 83ms | 0 KB | — | $0/mo | Optional |
support.microsoft.com support.microsoft.com | Other | 71ms | 171 KB | 41% | $0/mo | Optional |
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