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Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
2
REVIEW
6
PASS
15
INFO
2

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

Mobile Desktop
87
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
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.

1.49 s

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

2.26 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

125 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.002

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

14.89 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.

7.61 s

Page Load Progression

1.2 s
2.4 s
3.6 s
4.8 s
6.0 s
7.3 s
8.5 s
9.7 s
Checks
25
15 PASS 6 REVIEW 2 FIX
D
Page Weight Budget
Action
2.1 MB transferred, 26 requests
FIX
2.1 MB transferred, 26 requests
Info::
Page weighs 3.1 MB (2.1 MB transferred)
Warning::
Images are 1.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.9 MB
Info::
26 HTTP requests
Info::
Estimated 0.45 g CO2 per page load
2.1 MB / 2.4 MB budget
2.1 MB transferred
26 requests
0.45 g CO2 per page load
Images 1.9 MiB 90%
Fonts 104.4 KiB 5%
HTML 103.6 KiB 5%
JavaScript 11.6 KiB 1%
Other 2.8 KiB 0%
Other 568 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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.

No Cache-Control header

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

C
Image Optimization
Action
16 images, 0 KB saveable
REVIEW
16 images, 0 KB saveable
Warning::
https://codesigningstore.com/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://codesigningstore.com/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
16 images 1.9 MB
0 oversized -0 KB
13 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

C
JS Execution Cost
Action
1179ms total JS execution
REVIEW
1179ms total JS execution
Warning::
https://codesigningstore.com/: 537ms CPU time
Warning::
Unattributable: 382ms CPU time
Warning::
https://codesigningstore.com/cdn-cgi/challenge-pla...: 260ms CPU time

Main Thread Breakdown

Other 34% Script Evaluation 33% Style & Layout 20% Parse HTML & CSS 7% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://codesigningstore.com/537ms109ms6ms1st
Unattributable382ms30ms0ms1st
https://codesigningstore.com/cdn-cgi/challenge-platform/scripts/jsd/main.js260ms251ms2ms1st
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
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
Page Weight Inventory
Action
26 resources · 2.1 MB · 0 KB savings available
REVIEW
26 resources · 2.1 MB · 0 KB savings available
Warning::
Page weight 2.1 MB exceeds 1 MB target by 1.1 MB
Got: 2.1 MB Expected: ≤ 1 MB
Info::
1 resources over 200KB
26 resources · 2.1 MiB · 0 third-party 1.1 MiB over 1MB target
Image 90% · 1.9 MiB
Font 5% · 104.4 KiB
Document 5% · 103.6 KiB
JavaScript 1% · 11.6 KiB
Other 0% · 709 B
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+
Font Loading
4 fonts (104 KB)
PASS
4 fonts (104 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

104 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 1.5 s LCP 2.3 shttps://codesigningstore.com/wp-content/themes/twentytwentyone-child/assets/custom-fonts/inter.woff2inter.woff2 https://codesigningstore.com/wp-content/themes/twentytwentyone-child/assets/custom-fonts/inter.woff2 — 47.7 KiB — 28 ms — font-display: swaphttps://codesigningstore.com/wp-content/themes/twentytwentyone-child/assets/custom-fonts/longcang.woff2longcang.woff2 https://codesigningstore.com/wp-content/themes/twentytwentyone-child/assets/custom-fonts/longcang.woff2 — 12.4 KiB — 30 ms — font-display: swaphttps://codesigningstore.com/wp-content/cache/w3-cache/fonts/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2JL7SUc.woff2UcC73FwrK3iLTeHuS_nVMrM... https://codesigningstore.com/wp-content/cache/w3-cache/fonts/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2JL7SUc.woff2 — 25.7 KiB — 33 ms — font-display: swaphttps://codesigningstore.com/wp-content/cache/w3-cache/fonts/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa0ZL7SUc.woff2UcC73FwrK3iLTeHuS_nVMrM... https://codesigningstore.com/wp-content/cache/w3-cache/fonts/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa0ZL7SUc.woff2 — 18.6 KiB — 31 ms — font-display: swap
inter.woff2 woff2 swap
Size 48 KB
Load time 28 ms
Start 9.3 s
Risk FOUT — text flashes from fallback to web font
longcang.woff2 woff2 swap
Size 12 KB
Load time 30 ms
Start 9.3 s
Risk FOUT — text flashes from fallback to web font
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 26 KB
Load time 33 ms
Start 9.3 s
Risk FOUT — text flashes from fallback to web font
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 19 KB
Load time 31 ms
Start 9.3 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
2 scripts, 0 KB unused
PASS
2 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://codesigningstore.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js1 KB—✓1st
https://codesigningstore.com/cdn-cgi/challenge-platform/h/g/scripts/jsd/8fc8ed1d8752/main.js?11 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+
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+
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::
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+
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
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

Network Waterfall
26 requests over 9661ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 1.5 s LCP 2.3 shttps://codesigningstore.com// https://codesigningstore.com/ — 200 — 103.6 KiB — 9.3 s — h2https://codesigningstore.com/wp-content/themes/twentytwentyone-child/assets/custom-fonts/inter.woff2/wp-content/themes/twentytwentyone-... https://codesigningstore.com/wp-content/themes/twentytwentyone-child/assets/custom-fonts/inter.woff2 — 200 — 47.7 KiB — 28 ms — h2https://codesigningstore.com/wp-content/themes/twentytwentyone-child/assets/custom-fonts/longcang.woff2/wp-content/themes/twentytwentyone-... https://codesigningstore.com/wp-content/themes/twentytwentyone-child/assets/custom-fonts/longcang.woff2 — 200 — 12.4 KiB — 30 ms — h2https://codesigningstore.com/wp-content/cache/w3-cache/fonts/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2JL7SUc.woff2/wp-content/cache/w3-cache/fonts/s/... https://codesigningstore.com/wp-content/cache/w3-cache/fonts/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2JL7SUc.woff2 — 200 — 25.7 KiB — 33 ms — h2https://codesigningstore.com/wp-content/cache/w3-cache/fonts/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa0ZL7SUc.woff2/wp-content/cache/w3-cache/fonts/s/... https://codesigningstore.com/wp-content/cache/w3-cache/fonts/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa0ZL7SUc.woff2 — 200 — 18.6 KiB — 31 ms — h2https://codesigningstore.com/wp-content/uploads/2024/11/my-account-menu.webp/wp-content/uploads/2024/11/my-acco... https://codesigningstore.com/wp-content/uploads/2024/11/my-account-menu.webp — 200 — 886 B — 25 ms — h2https://codesigningstore.com/wp-content/uploads/2024/01/cs-certificates-768x817.webp/wp-content/uploads/2024/01/cs-cert... https://codesigningstore.com/wp-content/uploads/2024/01/cs-certificates-768x817.webp — 200 — 48.5 KiB — 28 ms — h2https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/check.svg/wp-content/themes/twentytwentyone-... https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/check.svg — 200 — 893 B — 27 ms — h2https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/icon-chat-blue.svg/wp-content/themes/twentytwentyone-... https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/icon-chat-blue.svg — 200 — 839 B — 31 ms — h2https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/seal-30days.svg/wp-content/themes/twentytwentyone-... https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/seal-30days.svg — 200 — 11.1 KiB — 37 ms — h2https://codesigningstore.com/wp-content/uploads/2024/11/seal-pricematch.svg/wp-content/uploads/2024/11/seal-pr... https://codesigningstore.com/wp-content/uploads/2024/11/seal-pricematch.svg — 200 — 9.4 KiB — 39 ms — h2https://codesigningstore.com/wp-content/uploads/2023/03/logo-1.svg/wp-content/uploads/2023/03/logo-1.... https://codesigningstore.com/wp-content/uploads/2023/03/logo-1.svg — 200 — 5.4 KiB — 43 ms — h2https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/cart-1.svg/wp-content/themes/twentytwentyone-... https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/cart-1.svg — 200 — 938 B — 66 ms — h2https://codesigningstore.com/wp-content/uploads/2023/07/multi-logo-11.svg/wp-content/uploads/2023/07/multi-l... https://codesigningstore.com/wp-content/uploads/2023/07/multi-logo-11.svg — 200 — 4.7 KiB — 66 ms — h2https://codesigningstore.com/wp-content/uploads/2023/05/cart-1-1.svg/wp-content/uploads/2023/05/cart-1-... https://codesigningstore.com/wp-content/uploads/2023/05/cart-1-1.svg — 200 — 938 B — 65 ms — h2https://codesigningstore.com/wp-content/uploads/2024/11/Picture1-1-768x539.webp/wp-content/uploads/2024/11/Picture... https://codesigningstore.com/wp-content/uploads/2024/11/Picture1-1-768x539.webp — 200 — 12.9 KiB — 55 ms — h2https://codesigningstore.com/wp-content/uploads/2023/03/platforms.svg/wp-content/uploads/2023/03/platfor... https://codesigningstore.com/wp-content/uploads/2023/03/platforms.svg — 200 — 1.8 MiB — 91 ms — h2https://codesigningstore.com/wp-content/uploads/2023/03/tools.svg/wp-content/uploads/2023/03/tools.s... https://codesigningstore.com/wp-content/uploads/2023/03/tools.svg — 200 — 8.1 KiB — 46 ms — h2https://codesigningstore.com/wp-content/uploads/2023/03/ico-pricing.svg/wp-content/uploads/2023/03/ico-pri... https://codesigningstore.com/wp-content/uploads/2023/03/ico-pricing.svg — 200 — 4.5 KiB — 69 ms — h2https://codesigningstore.com/wp-content/uploads/2023/03/ico-issuance.svg/wp-content/uploads/2023/03/ico-iss... https://codesigningstore.com/wp-content/uploads/2023/03/ico-issuance.svg — 200 — 6.1 KiB — 55 ms — h2https://codesigningstore.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js/cdn-cgi/scripts/5c5dd728/cloudflar... https://codesigningstore.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js — 200 — 985 B — 25 ms — h2https://codesigningstore.com/cdn-cgi/challenge-platform/scripts/jsd/main.js/cdn-cgi/challenge-platform/scripts... https://codesigningstore.com/cdn-cgi/challenge-platform/scripts/jsd/main.js — 302 — 141 B — 20 ms — h2https://codesigningstore.com/wp-content/uploads/2023/05/cropped-favicon-ic-300x300-1-100x100.png/wp-content/uploads/2023/05/cropped... https://codesigningstore.com/wp-content/uploads/2023/05/cropped-favicon-ic-300x300-1-100x100.png — 200 — 2.6 KiB — 25 ms — h2https://codesigningstore.com/cdn-cgi/challenge-platform/h/g/scripts/jsd/8fc8ed1d8752/main.js?/cdn-cgi/challenge-platform/h/g/scr... https://codesigningstore.com/cdn-cgi/challenge-platform/h/g/scripts/jsd/8fc8ed1d8752/main.js? — 200 — 10.6 KiB — 24 ms — h2https://codesigningstore.com/cdn-cgi/challenge-platform/h/g/jsd/oneshot/8fc8ed1d8752/0.48319654296811265:1780380019:xW64wi5apcz6CXbYDbzcBjgirR9c6bY5PzsD5RxTyE0/a05456b10c37ca0e/cdn-cgi/challenge-platform/h/g/jsd... https://codesigningstore.com/cdn-cgi/challenge-platform/h/g/jsd/oneshot/8fc8ed1d8752/0.48319654296811265:1780380019:xW64wi5apcz6CXbYDbzcBjgirR9c6bY5PzsD5RxTyE0/a05456b10c37ca0e — 200 — 568 B — 23 ms — h2https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/chat-icon.svg/wp-content/themes/twentytwentyone-... https://codesigningstore.com/wp-content/themes/twentytwentyone-child/images/chat-icon.svg — 200 — 871 B — 26 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-05-04 — 2026-05-31)

LCP (p75)

0 ms

0% good

INP (p75)

0 ms

0% good

CLS (p75)

0.050

92% good

FCP (p75)

1623 ms

TTFB (p75)

0 ms

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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