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Performance

· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
3
PASS
15
INFO
2

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

Mobile Desktop
90
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.
100
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.

1.22 s

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

1.44 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.

0.087

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

1.39 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.

1.44 s

Page Load Progression

535 ms
1.1 s
1.6 s
2.1 s
2.7 s
3.2 s
3.7 s
4.3 s
Checks
21
15 PASS 3 REVIEW 1 FIX
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: no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

no-store

DirectiveValueMeaning
no-store—Never cache this response
B
Image Optimization
2 images, 0 KB saveable
REVIEW
2 images, 0 KB saveable
Warning::
https://nu11cyber.com/nu11-logo-transparent.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.dmca.com/Badges/dmca_protected_8_12... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
2 images 54 KB
0 oversized -0 KB
2 legacy format
2 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

B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
182 KB transferred, 17 requests
PASS
182 KB transferred, 17 requests
Info::
Page weighs 394 KB (182 KB transferred)
Info::
17 HTTP requests
Info::
Estimated 0.04 g CO2 per page load
182 KB / 2.4 MB budget
182 KB transferred
17 requests
0.04 g CO2 per page load
JavaScript 85.6 KiB 47%
Images 54.4 KiB 30%
Other 26.4 KiB 14%
CSS 12.8 KiB 7%
Other 1.7 KiB 1%
HTML 1.5 KiB 1%
0 2.4 MB 4.9 MB
Under budget
A
Third-Party Impact
30% third-party, 0 ms blocking
PASS
30% third-party, 0 ms blocking
Info::
Third-party code accounts for 30% of page weight (54.1 KiB of 182.4 KiB)
Info::
Third-party blocking time is low (0 ms)
70%
30%
First-party Third-party
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+
JS Execution Cost
266ms total JS execution
PASS
266ms total JS execution
Info::
https://nu11cyber.com/assets/index-C1nYXaiv.js: 206ms CPU time
Info::
https://nu11cyber.com/: 61ms CPU time

Main Thread Breakdown

Other 50% Script Evaluation 29% Style & Layout 16% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://nu11cyber.com/assets/index-C1nYXaiv.js206ms65ms0ms1st
https://nu11cyber.com/61ms1ms0ms1st
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+
JS Bundles
4 scripts, 26 KB unused
PASS
4 scripts, 26 KB unused
Warning::
https://nu11cyber.com/assets/index-C1nYXaiv.js: 26 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 26 KB
26 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://nu11cyber.com/assets/index-C1nYXaiv.js38 KB26 KB (71%)✓1st
https://images.dmca.com/Badges/DMCABadgeHelper.min.js1 KB—✓3rd
https://unpkg.com/react@18.3.1/umd/react.production.min.js5 KB—✓3rd
https://unpkg.com/react-dom@18.3.1/umd/react-dom.production.min.js42 KB—✓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

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+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
PASS
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: no-store
A
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+
Page Weight Inventory
17 resources · 182 KB · 26 KB savings available
PASS
17 resources · 182 KB · 26 KB savings available
Info::
Within 1MB page-weight target
Got: 182 KB
Info::
6 third-party resources (30% of weight)
17 resources · 182.4 KiB · 6 third-party Within 1MB page-weight target
JavaScript 47% · 85.6 KiB
Image 44% · 80.2 KiB
CSS 7% · 12.8 KiB
Other 1% · 2.3 KiB
Document 1% · 1.5 KiB

~26.3 KiB of savings available

Remove unused JavaScript: 26.3 KiB
Network Waterfall
17 requests over 2006ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.2 s LCP 1.4 shttps://nu11cyber.com// https://nu11cyber.com/ — 200 — 1.5 KiB — 650 ms — h2https://unpkg.com/react@18/umd/react.production.min.jsunpkg.com/react@18/umd/react.produc... https://unpkg.com/react@18/umd/react.production.min.js — 302 — 308 B — 141 ms — h3https://unpkg.com/react-dom@18/umd/react-dom.production.min.jsunpkg.com/react-dom@18/umd/react-do... https://unpkg.com/react-dom@18/umd/react-dom.production.min.js — 302 — 279 B — 208 ms — h3https://nu11cyber.com/assets/index-C1nYXaiv.js/assets/index-C1nYXaiv.js https://nu11cyber.com/assets/index-C1nYXaiv.js — 200 — 37.9 KiB — 629 ms — h2https://nu11cyber.com/assets/style-DdtoMpod.css/assets/style-DdtoMpod.css https://nu11cyber.com/assets/style-DdtoMpod.css — 200 — 12.8 KiB — 421 ms — h2https://images.dmca.com/Badges/dmca_protected_8_120.png?ID=61bc9d91-68a2-4ea3-9c0d-2ecad6b5f54bimages.dmca.com/Badges/dmca_protect... https://images.dmca.com/Badges/dmca_protected_8_120.png?ID=61bc9d91-68a2-4ea3-9c0d-2ecad6b5f54b — 200 — 5.8 KiB — 81 ms — h2https://images.dmca.com/Badges/DMCABadgeHelper.min.jsimages.dmca.com/Badges/DMCABadgeHel... https://images.dmca.com/Badges/DMCABadgeHelper.min.js — 200 — 805 B — 83 ms — h2https://unpkg.com/react@18.3.1/umd/react.production.min.jsunpkg.com/react@18.3.1/umd/react.pr... https://unpkg.com/react@18.3.1/umd/react.production.min.js — 200 — 4.6 KiB — 76 ms — h3https://unpkg.com/react-dom@18.3.1/umd/react-dom.production.min.jsunpkg.com/react-dom@18.3.1/umd/reac... https://unpkg.com/react-dom@18.3.1/umd/react-dom.production.min.js — 200 — 42.3 KiB — 72 ms — h3https://nu11cyber.com/nu11-logo-transparent.png/nu11-logo-transparent.png https://nu11cyber.com/nu11-logo-transparent.png — 200 — 48.6 KiB — 223 ms — h2https://nu11cyber.com/n1Cy/v1/auth/refresh/n1Cy/v1/auth/refresh https://nu11cyber.com/n1Cy/v1/auth/refresh — 401 — 763 B — 213 ms — h2https://nu11cyber.com/nu11-favicon.png/nu11-favicon.png https://nu11cyber.com/nu11-favicon.png — 200 — 25.8 KiB — 364 ms — h2https://nu11cyber.com/n1Cy/v1/members/n1Cy/v1/members https://nu11cyber.com/n1Cy/v1/members — 200 — 122 B — 233 ms — h2https://nu11cyber.com/n1Cy/v1/research/n1Cy/v1/research https://nu11cyber.com/n1Cy/v1/research — 200 — 553 B — 246 ms — h2https://nu11cyber.com/n1Cy/v1/announcements/n1Cy/v1/announcements https://nu11cyber.com/n1Cy/v1/announcements — 200 — 89 B — 235 ms — h2https://nu11cyber.com/n1Cy/v1/bookmarks/n1Cy/v1/bookmarks https://nu11cyber.com/n1Cy/v1/bookmarks — 401 — 101 B — 226 ms — h2https://nu11cyber.com/n1Cy/v1/auth/refresh/n1Cy/v1/auth/refresh https://nu11cyber.com/n1Cy/v1/auth/refresh — 401 — 100 B — 220 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
3 images, 97 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

3

Total Size

97 KB

3 missing dimensions 1 missing lazy loading
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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