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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
2
REVIEW
5
PASS
5
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
40
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

1.79 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

5.33 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

721 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.399

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.79 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.

15.13 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
14
5 PASS 5 REVIEW 2 FIX
F
JS Execution Cost
Action
4570ms total JS execution
FIX
4570ms total JS execution
Warning::
https://www.microsoft.com/echo/etc.clientlibs/micr...: 1101ms CPU time
Warning::
https://www.microsoft.com/pt-br: 855ms CPU time
Warning::
Unattributable: 679ms CPU time
Warning::
https://www.microsoft.com/echo/etc.clientlibs/micr...: 331ms CPU time
Warning::
https://www.microsoft.com/onerfstatics/marketingsi...: 313ms CPU time
Info::
Third-party scripts: 1319ms (29% of total)

Main Thread Breakdown

Script Evaluation 48% Other 22% Script Parsing & Compilation 13% Style & Layout 9% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/structure/page/clientlibs/custom-oneds.ACSHASHbf880242325f20f5b8644293f4586135.min.js1101ms599ms337ms1st
https://www.microsoft.com/pt-br855ms33ms8ms1st
Unattributable679ms8ms0ms3rd
https://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/clientlib-mwf-new/main-light.ACSHASHf8a6ecd849f93a3e5d989c0cee0ceb80.min.js331ms179ms70ms1st
https://www.microsoft.com/onerfstatics/marketingsites-eus-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=1313ms239ms19ms1st
https://scripts.clarity.ms/0.8.59/clarity.js283ms268ms11ms3rd
https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/clientlibs/clientlib-base.ACSHASH019977c9939720784a32eb40d3774d9c.min.js217ms139ms27ms1st
https://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/cookie-compliance-manager.ACSHASHd471cafc5d23f4577f5cf2676dcc276a.min.js172ms165ms1ms1st
https://mem.gfx.ms/scripts/me/MeControl/10.25136.1/pt-BR/meBoot.min.js171ms113ms36ms3rd
https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/clientlibs/clientlib-jquery.ACSHASH75d0cb3e9ff9fee40f5ce5fd93c17fb2.min.js158ms137ms14ms1st

Showing top 10 of 13 scripts

F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Page Weight Budget
Action
2.0 MB transferred, 101 requests
REVIEW
2.0 MB transferred, 101 requests
Info::
Page weighs 5.4 MB (2.0 MB transferred)
Warning::
JavaScript is 1.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.3 MB
Info::
Fonts are 206 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 206 KB
Warning::
101 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.42 g CO2 per page load
2.0 MB / 2.4 MB budget
2.0 MB transferred
101 requests
0.42 g CO2 per page load
JavaScript 1.3 MiB 65%
Images 353.0 KiB 17%
Fonts 205.9 KiB 10%
CSS 88.0 KiB 4%
HTML 44.7 KiB 2%
Other 24.3 KiB 1%
Other 3.6 KiB 0%
Other 281 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

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.

Why this matters

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.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

B
Third-Party Impact
47% third-party, 0 ms blocking
REVIEW
47% third-party, 0 ms blocking
Info::
Third-party code accounts for 47% of page weight (950.8 KiB of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
53%
47%
First-party Third-party
C
Image Optimization
Action
22 images, 0 KB saveable
REVIEW
22 images, 0 KB saveable
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://uhf.microsoft.com/images/microsoft/RE1Mu3b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn-dynmedia-1.microsoft.com/is/image/micr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
22 images 353 KB
0 oversized -0 KB
5 legacy format
12 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
JS Bundles
Action
36 scripts, 124 KB unused
REVIEW
36 scripts, 124 KB unused
Warning::
https://www.microsoft.com/echo/etc.clientlibs/micr...: 64 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.microsoft.com/echo/etc.clientlibs/micr...: unminified — 47 KB could be saved
Warning::
https://www.microsoft.com/echo/etc.clientlibs/casc...: 40 KB unused (70%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.microsoft.com/echo/etc.clientlibs/casc...: unminified — 9 KB could be saved
Warning::
https://www.microsoft.com/onerfstatics/marketingsi...: 21 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 124 KB
124 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/clientlib-mwf-new/main-light.ACSHASHf8a6ecd849f93a3e5d989c0cee0ceb80.min.js113 KB64 KB (57%)✗1st
https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/clientlibs/clientlib-base.ACSHASH019977c9939720784a32eb40d3774d9c.min.js57 KB40 KB (70%)✗1st
https://www.microsoft.com/onerfstatics/marketingsites-eus-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=137 KB21 KB (57%)✓1st
https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/content/back-to-top-button/v1/back-to-top-button/clientlibs/sites.ACSHASH148bbe2eead6c5832c56691afb23e496.min.js1 KB—✓1st
https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/clientlibs/clientlib-jquery.ACSHASH75d0cb3e9ff9fee40f5ce5fd93c17fb2.min.js33 KB—✓1st
https://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/exp-cookiecomp/v1.ACSHASHa238861e6209e4e02576ddf5d1749c8b.min.js2 KB—✓1st
https://www.microsoft.com/echo/etc.clientlibs/cascade.component.authoring/dynamicclientsidelibs/handlerscripts/v1.ACSHASH6734c5d7a732130b83c7d4a6ba54dcec.min.js1 KB—✓1st
https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/content/universalheader/v1/universalheader/clientlibs/site.ACSHASH69d585e01cb601a02e396b34fdcab8c4.min.js7 KB—✓1st
https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/content/dynamic-price/v1/dynamic-price/clientlibs/sites.ACSHASHa26d031bf8c00f082570666bfff25659.min.js1 KB—✓1st
https://www.microsoft.com/echo/etc.clientlibs/microsoft/components/content/calltoaction/v1/calltoaction/clientlibs/site.ACSHASH6069c9c4123345cb32954882a5e52e8d.min.js1 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
7 fonts (206 KB)
PASS
7 fonts (206 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

206 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 1.8 s LCP 5.3 shttps://c.s-microsoft.com/static/fonts/segoe-ui/west-european/Semibold/latest.woff2latest.woff2 https://c.s-microsoft.com/static/fonts/segoe-ui/west-european/Semibold/latest.woff2 — 28.9 KiB — 0 ms — font-display: swaphttps://c.s-microsoft.com/static/fonts/segoe-ui/west-european/normal/latest.woff2latest.woff2 https://c.s-microsoft.com/static/fonts/segoe-ui/west-european/normal/latest.woff2 — 33.5 KiB — 0 ms — font-display: swaphttps://c.s-microsoft.com/static/fonts/segoe-ui/west-european/Bold/latest.woff2latest.woff2 https://c.s-microsoft.com/static/fonts/segoe-ui/west-european/Bold/latest.woff2 — 29.6 KiB — 0 ms — font-display: swaphttps://c.s-microsoft.com/static/fonts/segoe-ui/west-european/semilight/latest.woff2latest.woff2 https://c.s-microsoft.com/static/fonts/segoe-ui/west-european/semilight/latest.woff2 — 28.4 KiB — 0 ms — font-display: swaphttps://c.s-microsoft.com/static/fonts/segoe-ui/west-european/light/latest.woff2latest.woff2 https://c.s-microsoft.com/static/fonts/segoe-ui/west-european/light/latest.woff2 — 26.7 KiB — 0 ms — font-display: swaphttps://www.microsoft.com/mwf/_h/v3.54/mwf.app/fonts/mwfmdl2-v3.54.woffmwfmdl2-v3.54.woff https://www.microsoft.com/mwf/_h/v3.54/mwf.app/fonts/mwfmdl2-v3.54.woff — 26.4 KiB — 0 ms — font-display: swaphttps://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/clientlib-mwf-new/resources/fonts/MWFFluentIcons.woff2?v=2.15.3MWFFluentIcons.woff2 https://www.microsoft.com/echo/etc.clientlibs/microsoft/clientlibs/clientlib-mwf-new/resources/fonts/MWFFluentIcons.woff2?v=2.15.3 — 32.3 KiB — 0 ms — font-display: swap
latest.woff2 woff2 swap
Size 29 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
latest.woff2 woff2 swap
Size 33 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
latest.woff2 woff2 swap
Size 30 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
latest.woff2 woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
latest.woff2 woff2 swap
Size 27 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
mwfmdl2-v3.54.woff woff swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
MWFFluentIcons.woff2 woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
37 hints, 0 missing preconnects
PASS
37 hints, 0 missing preconnects
Info::
Page uses 37 resource hint(s)

Current Resource Hints

preconnect
+6
16
preload
5
dns-prefetch
+6
16
prefetch
—

37 resource hints configured

Network Waterfall
101 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
29% of JavaScript execution is third-party
First-party Third-party 1319ms · 371KB · $8/mo
Unattributable
Other
Costly
Execution 679ms
Transfer 0 KB
Monthly Cost $4/mo
Microsoft Clarity
Session Replay
Costly
Execution 283ms
Transfer 26 KB
Monthly Cost $2/mo
mem.gfx.ms
Other
Optional
Execution 171ms
Transfer 61 KB
Monthly Cost $1/mo
mem.gfx.ms
Other
Optional
Execution 110ms
Transfer 10 KB
Monthly Cost $1/mo
wcpstatic.microsoft.com
Other
Optional
Execution 76ms
Transfer 274 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • Unattributable adds 679ms and costs ~$4/month
  • Microsoft Clarity adds 283ms and costs ~$2/month

Unattributable takes 679ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Microsoft Clarity takes 283ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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