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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
3
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
94
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.
91
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.

1.06 s

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

1.37 s

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

32 ms

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

0.000

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

1.06 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.

1.37 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
15
8 PASS 2 REVIEW 3 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (617.6 KiB of 617.9 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
1 scripts, 375 KB unused
FIX
1 scripts, 375 KB unused
Warning::
https://witty-sand-06796de1e.2.azurestaticapps.net...: 375 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 375 KB
375 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://witty-sand-06796de1e.2.azurestaticapps.net/assets/index-DY3CJ8XB.js598 KB375 KB (63%)✓3rd

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

D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: max-age=0, no-cache, no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, no-cache, no-store

DirectiveValueMeaning
max-age0Cache for 0 seconds
no-cache—Cache but always revalidate first
no-store—Never cache this response
B
Page Weight Inventory
10 resources · 618 KB · 375 KB savings available
REVIEW
10 resources · 618 KB · 375 KB savings available
Info::
Within 1MB page-weight target
Got: 618 KB
Info::
~375 KB of savings available
Warning::
9 third-party resources (100% of weight)
Info::
1 resources over 200KB
10 resources · 617.9 KiB · 9 third-party Within 1MB page-weight target
JavaScript 97% · 598.5 KiB
Image 3% · 16.9 KiB
Other 0% · 1.8 KiB
Document 0% · 664 B
CSS 0% · 113 B

~374.9 KiB of savings available

Remove unused JavaScript: 374.9 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
618 KB transferred, 10 requests
PASS
618 KB transferred, 10 requests
Info::
Page weighs 2.0 MB (618 KB transferred)
Warning::
JavaScript is 598 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 598 KB
Info::
10 HTTP requests
Info::
Estimated 0.13 g CO2 per page load
618 KB / 2.4 MB budget
618 KB transferred
10 requests
0.13 g CO2 per page load
JavaScript 598.5 KiB 97%
Other 17.2 KiB 3%
Other 1.3 KiB 0%
HTML 664 B 0%
Other 166 B 0%
CSS 113 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget

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

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+
Image Optimization
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
236ms total JS execution
PASS
236ms total JS execution
Info::
https://witty-sand-06796de1e.2.azurestaticapps.net...: 144ms CPU time
Info::
Unattributable: 92ms CPU time
Warning::
Third-party scripts: 236ms (100% of total)

Main Thread Breakdown

Script Evaluation 54% Other 35% Style & Layout 9%
ScriptTotalScriptingParse/CompileParty
https://witty-sand-06796de1e.2.azurestaticapps.net/assets/index-DY3CJ8XB.js144ms134ms2ms3rd
Unattributable92ms10ms0ms3rd
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
10 requests over 1042ms
INFO
0 ms 500 ms 1.0 s FCP 1.1 s LCP 1.4 shttps://aka.ms// https://aka.ms/ — 302 — 379 B — 10 ms — http/1.1https://witty-sand-06796de1e.2.azurestaticapps.net/links?host=1witty-sand-06796de1e.2.azurestatica... https://witty-sand-06796de1e.2.azurestaticapps.net/links?host=1 — 200 — 664 B — 124 ms — h2https://witty-sand-06796de1e.2.azurestaticapps.net/assets/index-DY3CJ8XB.jswitty-sand-06796de1e.2.azurestatica... https://witty-sand-06796de1e.2.azurestaticapps.net/assets/index-DY3CJ8XB.js — 200 — 598.5 KiB — 223 ms — h2https://witty-sand-06796de1e.2.azurestaticapps.net/assets/index-Bp00V-Dr.csswitty-sand-06796de1e.2.azurestatica... https://witty-sand-06796de1e.2.azurestaticapps.net/assets/index-Bp00V-Dr.css — 200 — 113 B — 31 ms — h2https://js.monitor.azure.com/scripts/b/ai.config.1.cfg.jsonjs.monitor.azure.com/scripts/b/ai.c... https://js.monitor.azure.com/scripts/b/ai.config.1.cfg.json — 200 — 1.3 KiB — 54 ms — h2https://akalinkmanager.trafficmanager.net/am/redirection/home?set=enableReadOnlyLinksakalinkmanager.trafficmanager.net/a... https://akalinkmanager.trafficmanager.net/am/redirection/home?set=enableReadOnlyLinks — -1 — 0 B — 50 ms — https://akalinkmanager.trafficmanager.net/am/redirection/home?set=enableReadOnlyLinksakalinkmanager.trafficmanager.net/a... https://akalinkmanager.trafficmanager.net/am/redirection/home?set=enableReadOnlyLinks — 403 — 0 B — 47 ms — http/1.1https://witty-sand-06796de1e.2.azurestaticapps.net/assets/favicon-C_Ub-jv0.icowitty-sand-06796de1e.2.azurestatica... https://witty-sand-06796de1e.2.azurestaticapps.net/assets/favicon-C_Ub-jv0.ico — 200 — 16.9 KiB — 30 ms — h2https://westus2-2.in.applicationinsights.azure.com/v2/trackwestus2-2.in.applicationinsights.az... https://westus2-2.in.applicationinsights.azure.com/v2/track — 204 — 0 B — 130 ms — h2https://westus2-2.in.applicationinsights.azure.com/v2/trackwestus2-2.in.applicationinsights.az... https://westus2-2.in.applicationinsights.azure.com/v2/track — 200 — 166 B — 221 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 236ms · 598KB · $3/mo
witty-sand-06796de1e.2.azurestaticapps.net
Other
Optional
Execution 144ms
Transfer 598 KB
Unused 63%
Monthly Cost $2/mo
Unattributable
Other
Optional
Execution 92ms
Transfer 0 KB
Monthly Cost $1/mo

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

63% of witty-sand-06796de1e.2.azurestaticapps.net's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

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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