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https://www.crowdstrike.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
70
GRADE
C
FIX
3
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
41
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
78
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
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.

1.04 s

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

6.50 s

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

127 ms

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

1.164

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

2.58 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.

6.55 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
7 PASS 2 REVIEW 3 FIX
F
Page Weight Budget
Action
19.3 MB transferred, 111 requests
FIX
19.3 MB transferred, 111 requests
Critical::
Page weighs 25.1 MB (19.3 MB transferred)
Warning::
Images are 16.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 16.9 MB
Warning::
JavaScript is 1.8 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.8 MB
Info::
Fonts are 337 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 337 KB
Info::
CSS is 202 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 202 KB
Warning::
111 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 4.0 g CO2 per page load
19.3 MB / 2.4 MB budget
19.3 MB transferred
111 requests
4.0 g CO2 per page load
Images 16.9 MiB 88%
JavaScript 1.8 MiB 9%
Fonts 336.9 KiB 2%
CSS 202.0 KiB 1%
HTML 35.2 KiB 0%
Other 10.3 KiB 0%
Other 3.2 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

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

D
Third-Party Impact
Action
86% third-party, 0 ms blocking
FIX
86% third-party, 0 ms blocking
Warning::
Third-party code accounts for 86% of page weight (16.6 MiB of 19.3 MiB)
Info::
Third-party blocking time is low (0 ms)
86%
First-party Third-party
F
JS Bundles
Action
19 scripts, 866 KB unused
FIX
19 scripts, 866 KB unused
Warning::
https://www.crowdstrike.com/etc.clientlibs/crowdst...: 305 KB unused (35%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.crowdstrike.com/etc.clientlibs/crowdst...: 237 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.crowdstrike.com/etc.clientlibs/crowdst...: 79 KB unused (87%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.adobedtm.com/d72cd986aea0/f7467a554...: 59 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.crowdstrike.com/etc.clientlibs/crowdst...: 55 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 866 KB
866 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-common.lc-2a26aeb814935e14966167809fda82d3-lc.min.js866 KB305 KB (35%)✓1st
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-dotcom.lc-edd4934f94004010d7498eeb293882fb-lc.min.js369 KB237 KB (64%)✓1st
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-lottie.lc-59169d2e9977544fd3ae80d885311bce-lc.min.js91 KB79 KB (87%)✓1st
https://assets.adobedtm.com/d72cd986aea0/f7467a554824/launch-d9bfd4283ab8.min.js158 KB59 KB (38%)✓3rd
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-header.lc-7ae736e8f6c72c377fc0aa68b45612b9-lc.min.js71 KB55 KB (78%)✓1st
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-addsearch.lc-20c2e9aa23fb302d407e561f6c0be1c6-lc.min.js67 KB46 KB (70%)✓1st
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-dependencies.lc-39968705ebaffa8af8c834134a4525b2-lc.min.js40 KB31 KB (79%)✓1st
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-animation.lc-012003c5a08ba65bfd2d6d6b777b7f4e-lc.min.js60 KB30 KB (49%)✓1st
https://www.crowdstrike.com/etc.clientlibs/clientlibs/granite/jquery.lc-7842899024219bcbdb5e72c946870b79-lc.min.js35 KB24 KB (68%)✓1st
https://www.crowdstrike.com/.rum/@adobe/helix-rum-js@%5E2/dist/rum-standalone.js3 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

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
Image Optimization
Action
52 images, 0 KB saveable
REVIEW
52 images, 0 KB saveable
Warning::
https://assets.crowdstrike.com/is/image/crowdstrik... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.crowdstrike.com/content/dam/crowdstrik... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.crowdstrike.com/is/image/crowdstrik... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.crowdstrike.com/content/dam/crowdstrik... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.crowdstrike.com/is/image/crowdstrik... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.crowdstrike.com/is/image/crowdstrik... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.crowdstrike.com/is/content/crowdstr... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.crowdstrike.com/is/image/crowdstrik... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.crowdstrike.com/is/image/crowdstrik... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
52 images 16.9 MB
0 oversized -0 KB
32 legacy format
9 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

C
JS Execution Cost
Action
1455ms total JS execution
REVIEW
1455ms total JS execution
Warning::
https://www.crowdstrike.com/etc.clientlibs/crowdst...: 420ms CPU time
Warning::
https://www.crowdstrike.com/etc.clientlibs/crowdst...: 335ms CPU time
Warning::
https://www.crowdstrike.com/en-us/: 250ms CPU time
Info::
Unattributable: 221ms CPU time
Info::
https://assets.adobedtm.com/d72cd986aea0/f7467a554...: 106ms CPU time
Info::
Third-party scripts: 327ms (22% of total)

Main Thread Breakdown

Script Evaluation 40% Style & Layout 22% Other 22% Script Parsing & Compilation 8% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-common.lc-2a26aeb814935e14966167809fda82d3-lc.min.js420ms222ms47ms1st
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-dotcom.lc-edd4934f94004010d7498eeb293882fb-lc.min.js335ms155ms28ms1st
https://www.crowdstrike.com/en-us/250ms4ms1ms1st
Unattributable221ms3ms0ms3rd
https://assets.adobedtm.com/d72cd986aea0/f7467a554824/launch-d9bfd4283ab8.min.js106ms70ms20ms3rd
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-addsearch.lc-20c2e9aa23fb302d407e561f6c0be1c6-lc.min.js72ms62ms4ms1st
https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-header.lc-7ae736e8f6c72c377fc0aa68b45612b9-lc.min.js51ms36ms8ms1st
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
10 fonts (337 KB)
PASS
10 fonts (337 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

337 KB total

Render-blocking

0

of 10

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 6.0 s FCP 1.0 s LCP 6.5 shttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/sans/Crowdstrike_Sharp_Sans/CrowdstrikeSharpSans-Mdm.woff2CrowdstrikeSharpSans-Md... https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/sans/Crowdstrike_Sharp_Sans/CrowdstrikeSharpSans-Mdm.woff2 — 42.3 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasDisplayMedium.ttfNeueHaasDisplayMedium.ttf https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasDisplayMedium.ttf — 36.3 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasDisplayLight.ttfNeueHaasDisplayLight.ttf https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasDisplayLight.ttf — 36.4 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/haas_grot_disp/HaasGrotDisp-65Medium.woff2HaasGrotDisp-65Medium.w... https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/haas_grot_disp/HaasGrotDisp-65Medium.woff2 — 32.3 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/haas_grot_disp/HaasGrotDisp-45Light.woff2HaasGrotDisp-45Light.woff2 https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/haas_grot_disp/HaasGrotDisp-45Light.woff2 — 32.7 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/haas_grot_disp/HaasGrotDisp-55Roman.woff2HaasGrotDisp-55Roman.woff2 https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/haas_grot_disp/HaasGrotDisp-55Roman.woff2 — 31.7 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/sans/Crowdstrike_Sharp_Sans/CrowdstrikeSharpSans-Bold.woff2CrowdstrikeSharpSans-Bo... https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/sans/Crowdstrike_Sharp_Sans/CrowdstrikeSharpSans-Bold.woff2 — 42.9 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasGrotDisp-Medium.woff2NeueHaasGrotDisp-Medium... https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasGrotDisp-Medium.woff2 — 24.1 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasGrotDisp-Roman.woff2NeueHaasGrotDisp-Roman.... https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasGrotDisp-Roman.woff2 — 22.9 KiB — 0 ms — font-display: swaphttps://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasDisplayRoman.ttfNeueHaasDisplayRoman.ttf https://www.crowdstrike.com/etc.clientlibs/crowdstrike/clientlibs/crowdstrike-fonts/resources/fonts/neue_haas_grot_disp_pro/NeueHaasDisplayRoman.ttf — 35.3 KiB — 0 ms — font-display: swap
CrowdstrikeSharpSans-Md... woff2 swap
Size 42 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
NeueHaasDisplayMedium.ttf ttf swap
Size 36 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
NeueHaasDisplayLight.ttf ttf swap
Size 36 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
HaasGrotDisp-65Medium.w... woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
HaasGrotDisp-45Light.woff2 woff2 swap
Size 33 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
HaasGrotDisp-55Roman.woff2 woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
CrowdstrikeSharpSans-Bo... woff2 swap
Size 43 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
NeueHaasGrotDisp-Medium... woff2 swap
Size 24 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
NeueHaasGrotDisp-Roman.... woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
NeueHaasDisplayRoman.ttf ttf swap
Size 35 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
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 ~32 KB and ~64 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

A
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: max-age=3600
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=3600

DirectiveValueMeaning
max-age3600Cache for 1 hour
Effective TTL: 3600 seconds
Network Waterfall
111 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
22% of JavaScript execution is third-party
First-party Third-party 327ms · 158KB · $4/mo
Unattributable
Other
Costly
Execution 221ms
Transfer 0 KB
Monthly Cost $3/mo
assets.adobedtm.com
Other
Optional
Execution 106ms
Transfer 158 KB
Unused 38%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 221ms and costs ~$3/month

Unattributable takes 221ms 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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