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https://lunahub.ca

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
94
GRADE
A
FIX
1
REVIEW
5
PASS
13
INFO
3

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

Mobile Desktop
99
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
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.
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.

834 ms

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

834 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.

0.004

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

834 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.

834 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
13 PASS 5 REVIEW 1 FIX
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.
Info::
Last-Modified header present

No Cache-Control header

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

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
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
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
619 KB transferred, 10 requests
PASS
619 KB transferred, 10 requests
Info::
Page weighs 683 KB (619 KB transferred)
Info::
10 HTTP requests
Info::
Estimated 0.13 g CO2 per page load
619 KB / 2.4 MB budget
619 KB transferred
10 requests
0.13 g CO2 per page load
Images 572.8 KiB 93%
Fonts 23.9 KiB 4%
CSS 13.0 KiB 2%
HTML 4.4 KiB 1%
JavaScript 2.3 KiB 0%
Other 2.3 KiB 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
4% third-party, 0 ms blocking
PASS
4% third-party, 0 ms blocking
Info::
Third-party code accounts for 4% of page weight (25.1 KiB of 618.7 KiB)
Info::
Third-party blocking time is low (0 ms)
96%
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+
Image Optimization
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Info::
All images are well-optimized
4 images 573 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
203ms total JS execution
PASS
203ms total JS execution
Info::
https://lunahub.ca/: 203ms CPU time

Main Thread Breakdown

Other 57% Style & Layout 27% Rendering 12%
ScriptTotalScriptingParse/CompileParty
https://lunahub.ca/203ms1ms0ms1st
A+
Font Loading
1 fonts (24 KB)
PASS
1 fonts (24 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

24 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 834 ms LCP 834 mshttps://fonts.gstatic.com/s/manrope/v23/xn7gYHE41ni1AdIRggexSvfedN4.woff2xn7gYHE41ni1AdIRggexSvf... https://fonts.gstatic.com/s/manrope/v23/xn7gYHE41ni1AdIRggexSvfedN4.woff2 — 23.9 KiB — 29 ms — font-display: swap
xn7gYHE41ni1AdIRggexSvf... woff2 swap
Size 24 KB
Load time 29 ms
Start 253 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)
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://lunahub.ca/assets/js/site.js2 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+
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+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: User-Agent
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::
`Last-Modified` present -- timestamp-based conditional GET supported
Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.
A+
Page Weight Inventory
10 resources · 619 KB · 0 KB savings available
PASS
10 resources · 619 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 619 KB
Info::
2 third-party resources (4% of weight)
Info::
1 resources over 200KB
10 resources · 618.7 KiB · 2 third-party Within 1MB page-weight target
Image 93% · 575.1 KiB
Font 4% · 23.9 KiB
CSS 2% · 13.0 KiB
Document 1% · 4.4 KiB
JavaScript 0% · 2.3 KiB
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
10 requests over 605ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 834 ms LCP 834 mshttps://lunahub.ca// https://lunahub.ca/ — 200 — 4.4 KiB — 163 ms — h2https://fonts.googleapis.com/css2?family=Manrope:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400;1,500;1,600;1,700;1,800&display=swapfonts.googleapis.com/css2?family=Ma... https://fonts.googleapis.com/css2?family=Manrope:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400;1,500;1,600;1,700;1,800&display=swap — 200 — 1.2 KiB — 79 ms — h2https://lunahub.ca/assets/images/lunahub-homepage-background.webp/assets/images/lunahub-homepage-bac... https://lunahub.ca/assets/images/lunahub-homepage-background.webp — 200 — 108.4 KiB — 76 ms — h2https://lunahub.ca/assets/css/site.css/assets/css/site.css https://lunahub.ca/assets/css/site.css — 200 — 11.8 KiB — 73 ms — h2https://lunahub.ca/assets/images/lunahub-logo-light.png/assets/images/lunahub-logo-light.p... https://lunahub.ca/assets/images/lunahub-logo-light.png — 200 — 80.1 KiB — 306 ms — h2https://lunahub.ca/assets/js/site.js/assets/js/site.js https://lunahub.ca/assets/js/site.js — 200 — 2.3 KiB — 69 ms — h2https://fonts.gstatic.com/s/manrope/v23/xn7gYHE41ni1AdIRggexSvfedN4.woff2fonts.gstatic.com/s/manrope/v23/xn7... https://fonts.gstatic.com/s/manrope/v23/xn7gYHE41ni1AdIRggexSvfedN4.woff2 — 200 — 23.9 KiB — 29 ms — h3https://lunahub.ca/assets/images/unconventional-egg-bulb.webp/assets/images/unconventional-egg-b... https://lunahub.ca/assets/images/unconventional-egg-bulb.webp — 200 — 216.9 KiB — 43 ms — h2https://lunahub.ca/assets/images/storytelling-typewriter.webp/assets/images/storytelling-typewri... https://lunahub.ca/assets/images/storytelling-typewriter.webp — 200 — 167.5 KiB — 43 ms — h2https://lunahub.ca/assets/images/favicon.png/assets/images/favicon.png https://lunahub.ca/assets/images/favicon.png — 200 — 2.3 KiB — 122 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
4 images, 160 KB total, 77 KB wasted
INFO

Image Optimization Audit

Total Images

4

Total Size

160 KB

Oversized

1

Wasted

77 KB

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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