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.
656 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.38 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
42 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.
1.44 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.
3.05 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DPage Weight InventoryAction101 resources · 1.9 MB · 125 KB savings availableFIX
~124.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 101 resources | 1.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.9 MB transferred, 101 requestsREVIEW
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
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
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
CImage OptimizationAction22 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
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
CJS Execution CostAction1080ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/structure/page/clientlibs/custom-oneds.ACSHASHbf880242325f20f5b8644293f4586135.min.js | 259ms | 138ms | 83ms | 3rd |
| https://www.microsoft.com/pt-br | 258ms | 21ms | 2ms | 3rd |
| Unattributable | 162ms | 2ms | 0ms | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/clientlib-mwf-new/main-light.ACSHASHf8a6ecd849f93a3e5d989c0cee0ceb80.min.js | 109ms | 62ms | 18ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 86ms | 81ms | 3ms | 3rd |
| https://www.microsoft.com/onerfstatics/marketingsites-wcus-prod/shell/_scrf/js/themes=default/54-af9f9f/fb-2be034/21-f9d187/b0-50721e/d8-97d509/40-0bd7f9/ea-f1669e/9d-c6ea39/62-a72447/3e-a4ee50/7c-0bd6a1/60-37309a/db-bc0148/dc-7e9864/6d-c07ea1/6f-dafe8c/f6-aa5278/e6-5f3533/6d-1e7ed0/b7-cadaa7/62-2741f0/ca-40b7b0/4e-ee3a55/3e-f5c39b/c3-6454d7/f9-7592d3/d0-e64f3e/92-10345d/79-499886/7e-cda2d3/e7-1fe854/66-9d711a/38-b93a9e/de-884374/1f-100dea/33-abe4df/8f-61bee0?ver=2.0&_cf=02242021_3231&iife=1 | 78ms | 55ms | 5ms | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/clientlibs/clientlib-jquery.ACSHASH75d0cb3e9ff9fee40f5ce5fd93c17fb2.min.js | 65ms | 59ms | 4ms | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/clientlibs/clientlib-base.ACSHASH7e89d60ab495cd79ad67f82f4ceb5b7f.min.js | 62ms | 42ms | 11ms | 3rd |
CJS BundlesAction36 scripts, 125 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/clientlib-mwf-new/main-light.ACSHASHf8a6ecd849f93a3e5d989c0cee0ceb80.min.js | 113 KB | 64 KB (57%) | ✗ | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/clientlibs/clientlib-base.ACSHASH7e89d60ab495cd79ad67f82f4ceb5b7f.min.js | 58 KB | 40 KB (70%) | ✗ | 3rd |
| https://www.microsoft.com/onerfstatics/marketingsites-wcus-prod/shell/_scrf/js/themes=default/54-af9f9f/fb-2be034/21-f9d187/b0-50721e/d8-97d509/40-0bd7f9/ea-f1669e/9d-c6ea39/62-a72447/3e-a4ee50/7c-0bd6a1/60-37309a/db-bc0148/dc-7e9864/6d-c07ea1/6f-dafe8c/f6-aa5278/e6-5f3533/6d-1e7ed0/b7-cadaa7/62-2741f0/ca-40b7b0/4e-ee3a55/3e-f5c39b/c3-6454d7/f9-7592d3/d0-e64f3e/92-10345d/79-499886/7e-cda2d3/e7-1fe854/66-9d711a/38-b93a9e/de-884374/1f-100dea/33-abe4df/8f-61bee0?ver=2.0&_cf=02242021_3231&iife=1 | 37 KB | 21 KB (58%) | ✓ | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/clientlib-httpclient.ACSHASH47f4ec1c9a7d7117c2507e495fe380b9.min.js | 16 KB | — | ✓ | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/structure/page/clientlibs/embed-thirdparty.ACSHASH9d6d11b9c69e8cce8e9a556502a5a537.min.js | 1 KB | — | ✓ | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/dynamicclientsidelibs/handlerscripts/v1.ACSHASH6734c5d7a732130b83c7d4a6ba54dcec.min.js | 1 KB | — | ✓ | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/content/universalheader/v1/universalheader/clientlibs/site.ACSHASH69d585e01cb601a02e396b34fdcab8c4.min.js | 7 KB | — | ✓ | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/content/dynamic-price/v1/dynamic-price/clientlibs/sites.ACSHASHa26d031bf8c00f082570666bfff25659.min.js | 1 KB | — | ✓ | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/content/calltoaction/v1/calltoaction/clientlibs/site.ACSHASH6069c9c4123345cb32954882a5e52e8d.min.js | 1 KB | — | ✓ | 3rd |
| https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/content/highlight/v1/highlight/clientlibs/site.ACSHASH7c85d20692857758ab7de8f4f3875cbd.min.js | 8 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
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 Loading7 fonts (206 KB)PASS
Web fonts
7
206 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 ~8 KB and ~16 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall101 requests over 4117msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.microsoft.com www.microsoft.com | Other | 259ms | 553 KB | — | $1/mo | Costly |
www.microsoft.com www.microsoft.com | Other | 258ms | 30 KB | — | $1/mo | Costly |
Unattributable Unattributable | Other | 162ms | 0 KB | — | $1/mo | Optional |
www.microsoft.com www.microsoft.com | Other | 109ms | 113 KB | 57% | $1/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 86ms | 26 KB | — | $0/mo | Optional |
www.microsoft.com www.microsoft.com | Other | 78ms | 37 KB | 58% | $0/mo | Optional |
www.microsoft.com www.microsoft.com | Other | 65ms | 33 KB | — | $0/mo | Optional |
www.microsoft.com www.microsoft.com | Other | 62ms | 58 KB | 70% | $0/mo | Optional |
These scripts may cost more than they're worth
- www.microsoft.com adds 259ms and costs ~$1/month
- www.microsoft.com adds 258ms and costs ~$1/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
www.microsoft.com takes 259ms 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.microsoft.com takes 258ms 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
57% of www.microsoft.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
58% of www.microsoft.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
70% of www.microsoft.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