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https://lunahub.ca

Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
94
GRADE
A
FIX
1
REVIEW
6
PASS
16
INFO
3

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

Mobile Desktop
93
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.

2.64 s

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

2.64 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.

0.001

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

2.77 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.

2.64 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
26
16 PASS 6 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
JS Execution Cost
587ms total JS execution
REVIEW
587ms total JS execution
Warning::
https://lunahub.ca/: 322ms CPU time
Warning::
Unattributable: 266ms CPU time

Main Thread Breakdown

Other 56% Style & Layout 31% Rendering 6% Script Evaluation 5%
ScriptTotalScriptingParse/CompileParty
https://lunahub.ca/322ms14ms2ms1st
Unattributable266ms5ms0ms1st
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
542 KB transferred, 11 requests
PASS
542 KB transferred, 11 requests
Info::
Page weighs 629 KB (542 KB transferred)
Info::
11 HTTP requests
Info::
Estimated 0.11 g CO2 per page load
542 KB / 2.4 MB budget
542 KB transferred
11 requests
0.11 g CO2 per page load
Images 492.8 KiB 91%
Fonts 23.9 KiB 4%
CSS 13.0 KiB 2%
HTML 9.8 KiB 2%
JavaScript 2.4 KiB 0%
Other 248 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
5% third-party, 0 ms blocking
PASS
5% third-party, 0 ms blocking
Info::
Third-party code accounts for 5% of page weight (25.1 KiB of 542.1 KiB)
Info::
Third-party blocking time is low (0 ms)
95%
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 493 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
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 1.5 s 2.0 s 2.5 s FCP 2.6 s LCP 2.6 shttps://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 2.4 s
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
3 hints, 0 missing preconnects
PASS
3 hints, 0 missing preconnects
Info::
Page uses 3 resource hint(s)

Current Resource Hints

preconnect
2
preload
1
dns-prefetch
—
prefetch
—

3 resource hints configured

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
11 resources · 542 KB · 0 KB savings available
PASS
11 resources · 542 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 542 KB
Info::
2 third-party resources (5% of weight)
Info::
1 resources over 200KB
11 resources · 542.1 KiB · 2 third-party Within 1MB page-weight target
Image 91% · 492.8 KiB
Font 4% · 23.9 KiB
CSS 2% · 13.0 KiB
Document 2% · 10.0 KiB
JavaScript 0% · 2.4 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
JavaScript Blocking
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
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
11 requests over 2684ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.6 s LCP 2.6 shttps://lunahub.ca// https://lunahub.ca/ — 200 — 5.5 KiB — 166 ms — h2https://lunahub.ca/z0f76a1d14fd21a8fb5fd0d03e0fdc3d3cedae52f?wsidchk=13158549&pdata=https%253A%252F%252Flunahub.ca&id=7fa3b767c460b54a2be4d49030b349c7&ts=1794616997&cttl=0/z0f76a1d14fd21a8fb5fd0d03e0fdc3d3c... https://lunahub.ca/z0f76a1d14fd21a8fb5fd0d03e0fdc3d3cedae52f?wsidchk=13158549&pdata=https%253A%252F%252Flunahub.ca&id=7fa3b767c460b54a2be4d49030b349c7&ts=1794616997&cttl=0 — 302 — 248 B — 136 ms — h2https://lunahub.ca// https://lunahub.ca/ — 200 — 4.2 KiB — 127 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 — 93 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 — 179 ms — h2https://lunahub.ca/assets/css/site.css/assets/css/site.css https://lunahub.ca/assets/css/site.css — 200 — 11.8 KiB — 852 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 — 100 B — 1.2 s — h2https://lunahub.ca/assets/js/site.js/assets/js/site.js https://lunahub.ca/assets/js/site.js — 200 — 2.4 KiB — 121 ms — h2https://lunahub.ca/assets/images/unconventional-egg-bulb.webp/assets/images/unconventional-egg-b... https://lunahub.ca/assets/images/unconventional-egg-bulb.webp — 200 — 216.8 KiB — 54 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 — 54 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 — h3
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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