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https://lambent-blini-9cc521.netlify.app

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
97
GRADE
A+
FIX
0
REVIEW
4
PASS
15
INFO
3

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

Mobile Desktop
100
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.
100
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.

306 ms

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

311 ms

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.

0.001

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

306 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

311 ms

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
22
15 PASS 4 REVIEW
B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
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

B
HTTP Caching
no-cache
REVIEW
no-cache
Info::
Cache-Control header is set
Got: no-cache
Info::
ETag present — enables conditional (304) responses
Cache-Control

no-cache

DirectiveValueMeaning
no-cache—Cache but always revalidate first
A+
Page Weight Budget
44 KB transferred, 6 requests
PASS
44 KB transferred, 6 requests
Info::
Page weighs 149 KB (44 KB transferred)
Info::
6 HTTP requests
Info::
Estimated 0.01 g CO2 per page load
44 KB / 2.4 MB budget
44 KB transferred
6 requests
0.01 g CO2 per page load
HTML 31.8 KiB 72%
JavaScript 10.6 KiB 24%
Other 1.3 KiB 3%
Images 688 B 2%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-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+
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 1 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
54ms total JS execution
PASS
54ms total JS execution
Info::
https://lambent-blini-9cc521.netlify.app/: 54ms CPU time

Main Thread Breakdown

Other 38% Style & Layout 36% Script Evaluation 11% Script Parsing & Compilation 6% Parse HTML & CSS 6% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://lambent-blini-9cc521.netlify.app/54ms5ms5ms1st
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
1 scripts, 0 KB unused
PASS
1 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://lambent-blini-9cc521.netlify.app/.netlify/scripts/hud?variant=public11 KB—✓1st
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+
Document Compression
Document response uses brotli
PASS
Document 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-cache -- safe revalidate-on-request policy
PASS
Main HTML uses no-cache -- safe revalidate-on-request policy
Info::
Main HTML uses no-cache -- safe revalidate-on-request policy
Got: no-cache
A+
Server Response Intelligence
3 server-response signal(s) detected
PASS
3 server-response signal(s) detected
Info::
`Cache-Status` header present (RFC 9211): "Netlify Edge"; fwd=miss; fwd-status=200; stored
The page returns a `Cache-Status` header -- the standardized way for CDNs and caches to communicate per-hop cache state to debugging tools. Format: `Cache-Status: cdn-name; hit; ttl=300` (or `; fwd=miss` / `; fwd=stale`). Standard alternative to vendor-specific `X-Cache` patterns each CDN had historically. Cloudflare, Fastly, and Akamai all support emitting it.
Info::
`Vary` header declared: Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
`ETag` present -- conditional GET supported
A+
Page Weight Inventory
6 resources · 44 KB · 0 KB savings available
PASS
6 resources · 44 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 44 KB
6 resources · 44.4 KiB · 0 third-party Within 1MB page-weight target
Document 72% · 31.8 KiB
JavaScript 24% · 10.6 KiB
Other 3% · 1.3 KiB
Image 2% · 688 B
Asset Compression
No text asset hosts to measure
INFO
No text asset hosts to measure
Info::
No third-party or subdomain host served enough text assets to measure
Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.
Network Waterfall
6 requests over 406ms
INFO
0 ms 200 ms 400 ms FCP 306 ms LCP 311 mshttps://lambent-blini-9cc521.netlify.app// https://lambent-blini-9cc521.netlify.app/ — 200 — 31.8 KiB — 221 ms — h2https://lambent-blini-9cc521.netlify.app/icon.svg/icon.svg https://lambent-blini-9cc521.netlify.app/icon.svg — 200 — 688 B — 131 ms — h2https://lambent-blini-9cc521.netlify.app/manifest.webmanifest/manifest.webmanifest https://lambent-blini-9cc521.netlify.app/manifest.webmanifest — 200 — 1.3 KiB — 193 ms — h2https://lambent-blini-9cc521.netlify.app/.netlify/scripts/hud?variant=public/.netlify/scripts/hud?variant=publi... https://lambent-blini-9cc521.netlify.app/.netlify/scripts/hud?variant=public — 200 — 10.6 KiB — 27 ms — h2https://lambent-blini-9cc521.netlify.app/icon.svg/icon.svg https://lambent-blini-9cc521.netlify.app/icon.svg — 200 — 0 B — 1 ms — h2https://lambent-blini-9cc521.netlify.app/icon.svg/icon.svg https://lambent-blini-9cc521.netlify.app/icon.svg — 200 — 0 B — 1 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
2 images, 1 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

2

Total Size

1 KB

2 missing dimensions
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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