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https://pepecoinguide.carrd.co

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
0
REVIEW
5
PASS
14
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.
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.

566 ms

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

825 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.

0.000

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

990 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.

825 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
14 PASS 5 REVIEW
B
Third-Party Impact
49% third-party, 0 ms blocking
REVIEW
49% third-party, 0 ms blocking
Info::
Third-party code accounts for 49% of page weight (31.2 KiB of 63.8 KiB)
Info::
Third-party blocking time is low (0 ms)
51%
49%
First-party Third-party
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
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.
B
HTTP Caching
max-age=0
REVIEW
max-age=0
Info::
Cache-Control header is set
Got: max-age=0
Info::
Last-Modified header present
Cache-Control

max-age=0

DirectiveValueMeaning
max-age0Cache for 0 seconds
A+
Page Weight Budget
64 KB transferred, 7 requests
PASS
64 KB transferred, 7 requests
Info::
Page weighs 150 KB (64 KB transferred)
Info::
7 HTTP requests
Info::
Estimated 0.01 g CO2 per page load
64 KB / 2.4 MB budget
64 KB transferred
7 requests
0.01 g CO2 per page load
Fonts 30.0 KiB 47%
HTML 16.4 KiB 26%
Images 15.5 KiB 24%
CSS 1.1 KiB 2%
Other 827 B 1%
0 2.4 MB 4.9 MB
Under budget
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
2 images, 0 KB saveable
PASS
2 images, 0 KB saveable
Warning::
https://pepecoinguide.carrd.co/assets/images/image... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
2 images 15 KB
0 oversized -0 KB
1 legacy format
1 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

A+
JS Execution Cost
168ms total JS execution
PASS
168ms total JS execution
Info::
https://pepecoinguide.carrd.co/: 168ms CPU time

Main Thread Breakdown

Other 42% Style & Layout 39% Rendering 9% Script Evaluation 7%
ScriptTotalScriptingParse/CompileParty
https://pepecoinguide.carrd.co/168ms11ms2ms1st
A+
Font Loading
2 fonts (30 KB)
PASS
2 fonts (30 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

30 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 566 ms LCP 825 mshttps://fonts.gstatic.com/s/unbounded/v12/Yq6F-LOTXCb04q32xlpat-6uR42XTqtG6__244rNgdyOV0c1bQ.woff2Yq6F-LOTXCb04q32xlpat-6... https://fonts.gstatic.com/s/unbounded/v12/Yq6F-LOTXCb04q32xlpat-6uR42XTqtG6__244rNgdyOV0c1bQ.woff2 — 20.7 KiB — 28 ms — font-display: swaphttps://fonts.gstatic.com/s/spacemono/v17/i7dPIFZifjKcF5UAWdDRYEF8RXi4EwQ.woff2i7dPIFZifjKcF5UAWdDRYEF... https://fonts.gstatic.com/s/spacemono/v17/i7dPIFZifjKcF5UAWdDRYEF8RXi4EwQ.woff2 — 9.3 KiB — 24 ms — font-display: swap
Yq6F-LOTXCb04q32xlpat-6... woff2 swap
Size 21 KB
Load time 28 ms
Start 414 ms
Risk FOUT — text flashes from fallback to web font
i7dPIFZifjKcF5UAWdDRYEF... woff2 swap
Size 9 KB
Load time 24 ms
Start 414 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
No JavaScript
PASS
No JavaScript
Info::
No JavaScript bundles
No JavaScript files loaded.
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+
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: max-age=0
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
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::
`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
7 resources · 64 KB · 0 KB savings available
PASS
7 resources · 64 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 64 KB
Warning::
4 third-party resources (49% of weight)
7 resources · 63.8 KiB · 4 third-party Within 1MB page-weight target
Font 47% · 30.0 KiB
Document 27% · 17.2 KiB
Image 24% · 15.5 KiB
CSS 2% · 1.1 KiB
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

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
7 requests over 476ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 566 ms LCP 825 mshttps://pepecoinguide.carrd.co// https://pepecoinguide.carrd.co/ — 200 — 16.4 KiB — 393 ms — h2https://fonts.googleapis.com/css2?display=swap&family=Unbounded:ital,wght@0,700;1,700&family=Space+Mono:ital,wght@0,400;1,400fonts.googleapis.com/css2?display=s... https://fonts.googleapis.com/css2?display=swap&family=Unbounded:ital,wght@0,700;1,700&family=Space+Mono:ital,wght@0,400;1,400 — 200 — 1.1 KiB — 63 ms — h2data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewB…data:image/svg+xml;charset=utf8,%3C... data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewB… — 200 — 0 B — 0 ms — datahttps://pepecoinguide.carrd.co/assets/images/image01.jpg?v=8c47275c/assets/images/image01.jpg?v=8c4727... https://pepecoinguide.carrd.co/assets/images/image01.jpg?v=8c47275c — 200 — 15.5 KiB — 30 ms — h2https://fonts.gstatic.com/s/unbounded/v12/Yq6F-LOTXCb04q32xlpat-6uR42XTqtG6__244rNgdyOV0c1bQ.woff2fonts.gstatic.com/s/unbounded/v12/Y... https://fonts.gstatic.com/s/unbounded/v12/Yq6F-LOTXCb04q32xlpat-6uR42XTqtG6__244rNgdyOV0c1bQ.woff2 — 200 — 20.7 KiB — 28 ms — h3https://fonts.gstatic.com/s/spacemono/v17/i7dPIFZifjKcF5UAWdDRYEF8RXi4EwQ.woff2fonts.gstatic.com/s/spacemono/v17/i... https://fonts.gstatic.com/s/spacemono/v17/i7dPIFZifjKcF5UAWdDRYEF8RXi4EwQ.woff2 — 200 — 9.3 KiB — 24 ms — h3https://pepecoinguide.carrd.co/favicon.ico/favicon.ico https://pepecoinguide.carrd.co/favicon.ico — 404 — 827 B — 23 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
1 images, 15 KB total, 14 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

15 KB

Oversized

1

Wasted

14 KB

1 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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