Skip to content
https://www.ghost.io

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
3
REVIEW
2
PASS
9
INFO
2

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

Mobile Desktop
82
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
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.

1.88 s

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

4.57 s

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

118 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.

1.88 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.

26.88 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
16
9 PASS 2 REVIEW 3 FIX
F
Page Weight Budget
Action
5.1 MB transferred, 71 requests
FIX
5.1 MB transferred, 71 requests
Critical::
Page weighs 5.4 MB (5.1 MB transferred)
Info::
Fonts are 4.6 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 4.6 MB
Info::
71 HTTP requests
Info::
Estimated 1.1 g CO2 per page load
5.1 MB / 2.4 MB budget
5.1 MB transferred
71 requests
1.1 g CO2 per page load
Fonts 4.6 MiB 89%
Images 478.4 KiB 9%
JavaScript 50.5 KiB 1%
CSS 20.5 KiB 0%
HTML 18.5 KiB 0%
Other 4.0 KiB 0%
Other 467 B 0%
Other 306 B 0%
0 2.4 MB 4.9 MB
Over 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

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (5.1 MiB of 5.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
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.

C
JS Execution Cost
Action
1350ms total JS execution
REVIEW
1350ms total JS execution
Warning::
https://ghost.org/: 658ms CPU time
Warning::
Unattributable: 573ms CPU time
Info::
https://ghost.org/js/app.min.js: 118ms CPU time
Warning::
Third-party scripts: 1350ms (100% of total)

Main Thread Breakdown

Other 43% Style & Layout 33% Script Evaluation 14% Parse HTML & CSS 5% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://ghost.org/658ms25ms2ms3rd
Unattributable573ms7ms0ms3rd
https://ghost.org/js/app.min.js118ms102ms15ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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
21 images, 0 KB saveable
PASS
21 images, 0 KB saveable
Info::
All images are well-optimized
21 images 478 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
38 fonts (4688 KB)
PASS
38 fonts (4688 KB)
Info::
38 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

38

4688 KB total

Render-blocking

0

of 38

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 FCP 1.9 s LCP 4.6 shttps://ghost.org/fonts/InterVariable.woff2InterVariable.woff2 https://ghost.org/fonts/InterVariable.woff2 — 337.8 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterVariable-Italic.woff2InterVariable-Italic.woff2 https://ghost.org/fonts/InterVariable-Italic.woff2 — 373.5 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-Thin.woff2Inter-Thin.woff2 https://ghost.org/fonts/Inter-Thin.woff2 — 104.3 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-ThinItalic.woff2Inter-ThinItalic.woff2 https://ghost.org/fonts/Inter-ThinItalic.woff2 — 110.9 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-ExtraLight.woff2Inter-ExtraLight.woff2 https://ghost.org/fonts/Inter-ExtraLight.woff2 — 107.8 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-ExtraLightItalic.woff2Inter-ExtraLightItalic.... https://ghost.org/fonts/Inter-ExtraLightItalic.woff2 — 113.7 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-Light.woff2Inter-Light.woff2 https://ghost.org/fonts/Inter-Light.woff2 — 107.6 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-LightItalic.woff2Inter-LightItalic.woff2 https://ghost.org/fonts/Inter-LightItalic.woff2 — 114.0 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-Regular.woff2Inter-Regular.woff2 https://ghost.org/fonts/Inter-Regular.woff2 — 106.1 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-Italic.woff2Inter-Italic.woff2 https://ghost.org/fonts/Inter-Italic.woff2 — 112.1 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-Medium.woff2Inter-Medium.woff2 https://ghost.org/fonts/Inter-Medium.woff2 — 109.0 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-MediumItalic.woff2Inter-MediumItalic.woff2 https://ghost.org/fonts/Inter-MediumItalic.woff2 — 116.0 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-SemiBold.woff2Inter-SemiBold.woff2 https://ghost.org/fonts/Inter-SemiBold.woff2 — 109.1 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-SemiBoldItalic.woff2Inter-SemiBoldItalic.woff2 https://ghost.org/fonts/Inter-SemiBoldItalic.woff2 — 115.6 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-Bold.woff2Inter-Bold.woff2 https://ghost.org/fonts/Inter-Bold.woff2 — 108.6 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-BoldItalic.woff2Inter-BoldItalic.woff2 https://ghost.org/fonts/Inter-BoldItalic.woff2 — 115.8 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-ExtraBold.woff2Inter-ExtraBold.woff2 https://ghost.org/fonts/Inter-ExtraBold.woff2 — 108.9 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-ExtraBoldItalic.woff2Inter-ExtraBoldItalic.w... https://ghost.org/fonts/Inter-ExtraBoldItalic.woff2 — 116.0 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-Black.woff2Inter-Black.woff2 https://ghost.org/fonts/Inter-Black.woff2 — 106.4 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/Inter-BlackItalic.woff2Inter-BlackItalic.woff2 https://ghost.org/fonts/Inter-BlackItalic.woff2 — 112.8 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-Thin.woff2InterDisplay-Thin.woff2 https://ghost.org/fonts/InterDisplay-Thin.woff2 — 105.1 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-ThinItalic.woff2InterDisplay-ThinItalic... https://ghost.org/fonts/InterDisplay-ThinItalic.woff2 — 110.8 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-ExtraLight.woff2InterDisplay-ExtraLight... https://ghost.org/fonts/InterDisplay-ExtraLight.woff2 — 107.3 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-ExtraLightItalic.woff2InterDisplay-ExtraLight... https://ghost.org/fonts/InterDisplay-ExtraLightItalic.woff2 — 114.5 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-Light.woff2InterDisplay-Light.woff2 https://ghost.org/fonts/InterDisplay-Light.woff2 — 107.4 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-LightItalic.woff2InterDisplay-LightItali... https://ghost.org/fonts/InterDisplay-LightItalic.woff2 — 114.3 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-Regular.woff2InterDisplay-Regular.woff2 https://ghost.org/fonts/InterDisplay-Regular.woff2 — 103.3 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-Italic.woff2InterDisplay-Italic.woff2 https://ghost.org/fonts/InterDisplay-Italic.woff2 — 110.9 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-Medium.woff2InterDisplay-Medium.woff2 https://ghost.org/fonts/InterDisplay-Medium.woff2 — 107.6 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-MediumItalic.woff2InterDisplay-MediumItal... https://ghost.org/fonts/InterDisplay-MediumItalic.woff2 — 115.0 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-SemiBold.woff2InterDisplay-SemiBold.w... https://ghost.org/fonts/InterDisplay-SemiBold.woff2 — 107.8 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-SemiBoldItalic.woff2InterDisplay-SemiBoldIt... https://ghost.org/fonts/InterDisplay-SemiBoldItalic.woff2 — 114.9 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-Bold.woff2InterDisplay-Bold.woff2 https://ghost.org/fonts/InterDisplay-Bold.woff2 — 107.8 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-BoldItalic.woff2InterDisplay-BoldItalic... https://ghost.org/fonts/InterDisplay-BoldItalic.woff2 — 115.0 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-ExtraBold.woff2InterDisplay-ExtraBold.... https://ghost.org/fonts/InterDisplay-ExtraBold.woff2 — 107.9 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-ExtraBoldItalic.woff2InterDisplay-ExtraBoldI... https://ghost.org/fonts/InterDisplay-ExtraBoldItalic.woff2 — 116.1 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-Black.woff2InterDisplay-Black.woff2 https://ghost.org/fonts/InterDisplay-Black.woff2 — 104.9 KiB — 0 ms — font-display: swaphttps://ghost.org/fonts/InterDisplay-BlackItalic.woff2InterDisplay-BlackItali... https://ghost.org/fonts/InterDisplay-BlackItalic.woff2 — 111.9 KiB — 0 ms — font-display: swap
InterVariable.woff2 woff2 swap
Size 338 KB
Load time 0 ms
Start 0 ms
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
InterVariable-Italic.woff2 woff2 swap
Size 373 KB
Load time 0 ms
Start 0 ms
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
Inter-Thin.woff2 woff2 swap
Size 104 KB
Load time 0 ms
Start 0 ms
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
Inter-ThinItalic.woff2 woff2 swap
Size 111 KB
Load time 0 ms
Start 0 ms
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
Inter-ExtraLight.woff2 woff2 swap
Size 108 KB
Load time 0 ms
Start 0 ms
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
Inter-ExtraLightItalic.... woff2 swap
Size 114 KB
Load time 0 ms
Start 0 ms
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
Inter-Light.woff2 woff2 swap
Size 108 KB
Load time 0 ms
Start 0 ms
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
Inter-LightItalic.woff2 woff2 swap
Size 114 KB
Load time 0 ms
Start 0 ms
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
Inter-Regular.woff2 woff2 swap
Size 106 KB
Load time 0 ms
Start 0 ms
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
Inter-Italic.woff2 woff2 swap
Size 112 KB
Load time 0 ms
Start 0 ms
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
Inter-Medium.woff2 woff2 swap
Size 109 KB
Load time 0 ms
Start 0 ms
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
Inter-MediumItalic.woff2 woff2 swap
Size 116 KB
Load time 0 ms
Start 0 ms
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
Inter-SemiBold.woff2 woff2 swap
Size 109 KB
Load time 0 ms
Start 0 ms
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
Inter-SemiBoldItalic.woff2 woff2 swap
Size 116 KB
Load time 0 ms
Start 0 ms
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
Inter-Bold.woff2 woff2 swap
Size 109 KB
Load time 0 ms
Start 0 ms
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
Inter-BoldItalic.woff2 woff2 swap
Size 116 KB
Load time 0 ms
Start 0 ms
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
Inter-ExtraBold.woff2 woff2 swap
Size 109 KB
Load time 0 ms
Start 0 ms
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
Inter-ExtraBoldItalic.w... woff2 swap
Size 116 KB
Load time 0 ms
Start 0 ms
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
Inter-Black.woff2 woff2 swap
Size 106 KB
Load time 0 ms
Start 0 ms
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
Inter-BlackItalic.woff2 woff2 swap
Size 113 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-Thin.woff2 woff2 swap
Size 105 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-ThinItalic... woff2 swap
Size 111 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-ExtraLight... woff2 swap
Size 107 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-ExtraLight... woff2 swap
Size 115 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-Light.woff2 woff2 swap
Size 107 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-LightItali... woff2 swap
Size 114 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-Regular.woff2 woff2 swap
Size 103 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-Italic.woff2 woff2 swap
Size 111 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-Medium.woff2 woff2 swap
Size 108 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-MediumItal... woff2 swap
Size 115 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-SemiBold.w... woff2 swap
Size 108 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-SemiBoldIt... woff2 swap
Size 115 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-Bold.woff2 woff2 swap
Size 108 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-BoldItalic... woff2 swap
Size 115 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-ExtraBold.... woff2 swap
Size 108 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-ExtraBoldI... woff2 swap
Size 116 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-Black.woff2 woff2 swap
Size 105 KB
Load time 0 ms
Start 0 ms
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
InterDisplay-BlackItali... woff2 swap
Size 112 KB
Load time 0 ms
Start 0 ms
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 ~2344 KB and ~4688 ms

A+
JS Bundles
6 scripts, 26 KB unused
PASS
6 scripts, 26 KB unused
Warning::
https://ghost.org/js/app.min.js: 26 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 26 KB
26 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://ghost.org/js/app.min.js37 KB26 KB (73%)✓3rd
https://ghost.org/js/script.js2 KB—✓3rd
https://cdn.firstpromoter.com/fpr.js2 KB—✓3rd
https://www.dubcdn.com/analytics/script.js2 KB—✓3rd
https://analytics.ahrefs.com/analytics.js3 KB—✓3rd
https://ghost.org/.netlify/scripts/rum4 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

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
40 hints, 0 missing preconnects
PASS
40 hints, 0 missing preconnects
Info::
Page uses 40 resource hint(s)

Current Resource Hints

preconnect
1
preload
+29
39
dns-prefetch
—
prefetch
—

40 resource hints configured

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
71 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 1350ms · 55KB · £4/mo
ghost.org
Other
Costly
Execution 658ms
Transfer 19 KB
Monthly Cost £2/mo
Unattributable
Other
Costly
Execution 573ms
Transfer 0 KB
Monthly Cost £2/mo
ghost.org
Other
Optional
Execution 118ms
Transfer 37 KB
Unused 73%
Monthly Cost £0/mo

These scripts may cost more than they're worth

  • ghost.org adds 658ms and costs ~£2/month
  • Unattributable adds 573ms and costs ~£2/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

ghost.org takes 658ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 573ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

73% of ghost.org's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

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.

Send Feedback