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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
2
REVIEW
3
PASS
10
INFO
2

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

Mobile Desktop
76
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
78
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.
83
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.

2.52 s

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

5.52 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.

0.000

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

2.72 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.

5.52 s

Page Load Progression

568 ms
1.1 s
1.7 s
2.3 s
2.8 s
3.4 s
4.0 s
4.5 s
Checks
17
10 PASS 3 REVIEW 2 FIX
D
Third-Party Impact
Action
88% third-party, 0 ms blocking
FIX
88% third-party, 0 ms blocking
Warning::
Third-party code accounts for 88% of page weight (627.0 KiB of 711.2 KiB)
Info::
Third-party blocking time is low (0 ms)
88%
First-party Third-party
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.

B
Image Optimization
5 images, 0 KB saveable
REVIEW
5 images, 0 KB saveable
Info::
All images are well-optimized
5 images 14 KB
0 oversized -0 KB
5 legacy format
0 missing dimensions CLS risk
B
JS Execution Cost
710ms total JS execution
REVIEW
710ms total JS execution
Warning::
https://webkit.org/: 554ms CPU time
Info::
Unattributable: 157ms CPU time
Info::
Third-party scripts: 157ms (22% of total)

Main Thread Breakdown

Other 53% Style & Layout 28% Rendering 12% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://webkit.org/554ms3ms0ms1st
Unattributable157ms4ms0ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Page Weight Budget
711 KB transferred, 18 requests
PASS
711 KB transferred, 18 requests
Info::
Page weighs 815 KB (711 KB transferred)
Info::
Fonts are 622 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 622 KB
Info::
18 HTTP requests
Info::
Estimated 0.15 g CO2 per page load
711 KB / 2.4 MB budget
711 KB transferred
18 requests
0.15 g CO2 per page load
Fonts 621.5 KiB 87%
Other 34.0 KiB 5%
HTML 19.4 KiB 3%
CSS 18.3 KiB 3%
Images 13.7 KiB 2%
JavaScript 4.0 KiB 1%
Other 402 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

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 (622 KB)
PASS
4 fonts (622 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

622 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 FCP 2.5 s LCP 5.5 shttps://www.apple.com/wss/fonts/SF-Pro-Display/v1/sf-pro-display_medium.woff2sf-pro-display_medium.w... https://www.apple.com/wss/fonts/SF-Pro-Display/v1/sf-pro-display_medium.woff2 — 150.9 KiB — 12 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_light.woff2sf-pro-text_light.woff2 https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_light.woff2 — 152.8 KiB — 14 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_regular.woff2sf-pro-text_regular.woff2 https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_regular.woff2 — 152.7 KiB — 17 ms — font-display: swaphttps://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_medium.woff2sf-pro-text_medium.woff2 https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_medium.woff2 — 165.2 KiB — 23 ms — font-display: swap
sf-pro-display_medium.w... woff2 swap
Size 151 KB
Load time 12 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
sf-pro-text_light.woff2 woff2 swap
Size 153 KB
Load time 14 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
sf-pro-text_regular.woff2 woff2 swap
Size 153 KB
Load time 17 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
sf-pro-text_medium.woff2 woff2 swap
Size 165 KB
Load time 23 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)

Fixing the unchecked items could save ~311 KB and ~622 ms

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://shynet.webkit.org/ingress/561b9e53-fb8c-4297-ae4d-bde05e8daa59/script.js2 KB—✓3rd
https://webkit.org/wp-content/themes/webkit/scripts/global.js?ver=1.02 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
Page Weight Inventory
18 resources · 711 KB · 0 KB savings available
PASS
18 resources · 711 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 711 KB
Warning::
9 third-party resources (88% of weight)
18 resources · 711.2 KiB · 9 third-party Within 1MB page-weight target
Font 87% · 621.5 KiB
Image 7% · 47.7 KiB
Document 3% · 19.4 KiB
CSS 3% · 18.3 KiB
JavaScript 1% · 4.0 KiB
Other 0% · 402 B
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
Network Waterfall
18 requests over 2249ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.5 s LCP 5.5 shttps://webkit.org// https://webkit.org/ — 200 — 19.4 KiB — 1.0 s — h2https://webkit.org/wp-content/themes/webkit/style.css?2022100501/wp-content/themes/webkit/style.css... https://webkit.org/wp-content/themes/webkit/style.css?2022100501 — 200 — 15.5 KiB — 198 ms — h2https://www.apple.com/wss/fonts?families=SF+Pro,v1www.apple.com/wss/fonts?families=SF... https://www.apple.com/wss/fonts?families=SF+Pro,v1 — 200 — 1.6 KiB — 82 ms — h2https://www.apple.com/wss/fonts?families=SF+Mono,v2www.apple.com/wss/fonts?families=SF... https://www.apple.com/wss/fonts?families=SF+Mono,v2 — 200 — 1.2 KiB — 84 ms — h2https://shynet.webkit.org/ingress/561b9e53-fb8c-4297-ae4d-bde05e8daa59/script.jsshynet.webkit.org/ingress/561b9e53-... https://shynet.webkit.org/ingress/561b9e53-fb8c-4297-ae4d-bde05e8daa59/script.js — 200 — 2.2 KiB — 626 ms — h2https://webkit.org/wp-content/themes/webkit/scripts/global.js?ver=1.0/wp-content/themes/webkit/scripts/g... https://webkit.org/wp-content/themes/webkit/scripts/global.js?ver=1.0 — 200 — 1.7 KiB — 195 ms — h2https://webkit.org/wp-content/themes/webkit/images/webkit.svg/wp-content/themes/webkit/images/we... https://webkit.org/wp-content/themes/webkit/images/webkit.svg — 200 — 4.6 KiB — 212 ms — h2https://webkit.org/wp-content/themes/webkit/images/menu-down.svg/wp-content/themes/webkit/images/me... https://webkit.org/wp-content/themes/webkit/images/menu-down.svg — 200 — 540 B — 205 ms — h2https://webkit.org/wp-content/themes/webkit/images/template.svg/wp-content/themes/webkit/images/te... https://webkit.org/wp-content/themes/webkit/images/template.svg — 200 — 2.4 KiB — 210 ms — h2https://webkit.org/wp-content/themes/webkit/images/compass.svg/wp-content/themes/webkit/images/co... https://webkit.org/wp-content/themes/webkit/images/compass.svg — 200 — 5.6 KiB — 212 ms — h2https://webkit.org/wp-content/themes/webkit/images/chevron.svg/wp-content/themes/webkit/images/ch... https://webkit.org/wp-content/themes/webkit/images/chevron.svg — 200 — 587 B — 207 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Display/v1/sf-pro-display_medium.woff2www.apple.com/wss/fonts/SF-Pro-Disp... https://www.apple.com/wss/fonts/SF-Pro-Display/v1/sf-pro-display_medium.woff2 — 200 — 150.9 KiB — 12 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_light.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_light.woff2 — 200 — 152.8 KiB — 14 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_regular.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_regular.woff2 — 200 — 152.7 KiB — 17 ms — h2https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_medium.woff2www.apple.com/wss/fonts/SF-Pro-Text... https://www.apple.com/wss/fonts/SF-Pro-Text/v1/sf-pro-text_medium.woff2 — 200 — 165.2 KiB — 23 ms — h2https://shynet.webkit.org/ingress/561b9e53-fb8c-4297-ae4d-bde05e8daa59/script.jsshynet.webkit.org/ingress/561b9e53-... https://shynet.webkit.org/ingress/561b9e53-fb8c-4297-ae4d-bde05e8daa59/script.js — 200 — 0 B — 530 ms — h2https://webkit.org/favicon.ico/favicon.ico https://webkit.org/favicon.ico — 200 — 34.0 KiB — 196 ms — h2https://shynet.webkit.org/ingress/561b9e53-fb8c-4297-ae4d-bde05e8daa59/script.jsshynet.webkit.org/ingress/561b9e53-... https://shynet.webkit.org/ingress/561b9e53-fb8c-4297-ae4d-bde05e8daa59/script.js — 200 — 402 B — 219 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
22% of JavaScript execution is third-party
First-party Third-party 157ms · 0KB · $2/mo
Unattributable
Other
Optional
Execution 157ms
Transfer 0 KB
Monthly Cost $2/mo

How third-party costs are calculated

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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