Adding a Cache-Control header can significantly improve repeat-visit performance.
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
18 images, 0 KB saveable
PASS
18 images, 0 KB saveable
Info::
✓
All images are well-optimized
18images67 KB
0oversized-0 KB
3legacy format
0missing dimensionsCLS risk
A+
Font Loading
5 fonts (352 KB)
PASS
5 fonts (352 KB)
Info::
i
5 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
5
352 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
d859cbb66446191425f0.d8...woff2swap
Size82 KB
Load time27 ms
Start1.8 s
RiskFOUT — text flashes from fallback to web font
355eece7fa95947e67a5.35...woff2swap
Size86 KB
Load time30 ms
Start1.8 s
RiskFOUT — text flashes from fallback to web font
da8cb24f5ee5a1b23cae.da...woff2swap
Size83 KB
Load time31 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
assets-management-icons...woffswap
Size14 KB
Load time31 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
6ac1346381a2191cec73.6a...woff2swap
Size87 KB
Load time32 ms
Start1.9 s
RiskFOUT — 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)
Fixing the unchecked items could save ~4 KB and ~8 ms
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+
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
129 requests over 6880ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100%of JavaScript execution is third-party
First-party Third-party12081ms · 3100KB · $160/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.spaceship.com
www.spaceship.com
Other
3592ms
287 KB
—
$48/mo
Costly
spaceship-cdn.com
spaceship-cdn.com
Other
2514ms
276 KB
34%
$33/mo
Costly
spaceship-cdn.com
spaceship-cdn.com
Other
1202ms
367 KB
34%
$16/mo
Costly
spaceship-cdn.com
spaceship-cdn.com
Other
714ms
322 KB
37%
$9/mo
Costly
Unattributable
Unattributable
Other
699ms
0 KB
—
$9/mo
Costly
spaceship-cdn.com
spaceship-cdn.com
Other
481ms
52 KB
—
$6/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
476ms
178 KB
37%
$6/mo
Costly
js-agent.newrelic.com
js-agent.newrelic.com
Other
330ms
26 KB
—
$4/mo
Costly
spaceship-cdn.com
spaceship-cdn.com
Other
281ms
229 KB
56%
$4/mo
Costly
spaceship-cdn.com
spaceship-cdn.com
Other
256ms
166 KB
59%
$3/mo
Costly
Stripe
js.stripe.com
Payment
256ms
225 KB
73%
$3/mo
Essential
Google Tag Manager
www.googletagmanager.com
Tag Manager
254ms
161 KB
42%
$3/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
196ms
145 KB
48%
$3/mo
Optional
spaceship-cdn.com
spaceship-cdn.com
Other
174ms
92 KB
39%
$2/mo
Optional
spaceship-cdn.com
spaceship-cdn.com
Other
114ms
83 KB
35%
$2/mo
Optional
spaceship-cdn.com
spaceship-cdn.com
Other
105ms
59 KB
40%
$1/mo
Optional
spaceship-cdn.com
spaceship-cdn.com
Other
96ms
83 KB
44%
$1/mo
Optional
spaceship-cdn.com
spaceship-cdn.com
Other
83ms
49 KB
47%
$1/mo
Optional
spaceship-cdn.com
spaceship-cdn.com
Other
72ms
47 KB
44%
$1/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
69ms
161 KB
69%
$1/mo
Optional
spaceship-cdn.com
spaceship-cdn.com
Other
65ms
79 KB
—
$1/mo
Optional
Twitter/X Pixel
static.ads-twitter.com
Advertising
53ms
13 KB
—
$1/mo
Optional
www.spaceship.com
Other
Costly
Execution3592ms
Transfer287 KB
Monthly Cost$48/mo
spaceship-cdn.com
Other
Costly
Execution2514ms
Transfer276 KB
Unused34%
Monthly Cost$33/mo
spaceship-cdn.com
Other
Costly
Execution1202ms
Transfer367 KB
Unused34%
Monthly Cost$16/mo
spaceship-cdn.com
Other
Costly
Execution714ms
Transfer322 KB
Unused37%
Monthly Cost$9/mo
Unattributable
Other
Costly
Execution699ms
Transfer0 KB
Monthly Cost$9/mo
spaceship-cdn.com
Other
Costly
Execution481ms
Transfer52 KB
Monthly Cost$6/mo
Google Tag Manager
Tag Manager
Costly
Execution476ms
Transfer178 KB
Unused37%
Monthly Cost$6/mo
js-agent.newrelic.com
Other
Costly
Execution330ms
Transfer26 KB
Monthly Cost$4/mo
spaceship-cdn.com
Other
Costly
Execution281ms
Transfer229 KB
Unused56%
Monthly Cost$4/mo
spaceship-cdn.com
Other
Costly
Execution256ms
Transfer166 KB
Unused59%
Monthly Cost$3/mo
Stripe
Payment
Essential
Execution256ms
Transfer225 KB
Unused73%
Monthly Cost$3/mo
Google Tag Manager
Tag Manager
Costly
Execution254ms
Transfer161 KB
Unused42%
Monthly Cost$3/mo
Google Tag Manager
Tag Manager
Optional
Execution196ms
Transfer145 KB
Unused48%
Monthly Cost$3/mo
spaceship-cdn.com
Other
Optional
Execution174ms
Transfer92 KB
Unused39%
Monthly Cost$2/mo
spaceship-cdn.com
Other
Optional
Execution114ms
Transfer83 KB
Unused35%
Monthly Cost$2/mo
spaceship-cdn.com
Other
Optional
Execution105ms
Transfer59 KB
Unused40%
Monthly Cost$1/mo
spaceship-cdn.com
Other
Optional
Execution96ms
Transfer83 KB
Unused44%
Monthly Cost$1/mo
spaceship-cdn.com
Other
Optional
Execution83ms
Transfer49 KB
Unused47%
Monthly Cost$1/mo
spaceship-cdn.com
Other
Optional
Execution72ms
Transfer47 KB
Unused44%
Monthly Cost$1/mo
Google Tag Manager
Tag Manager
Optional
Execution69ms
Transfer161 KB
Unused69%
Monthly Cost$1/mo
spaceship-cdn.com
Other
Optional
Execution65ms
Transfer79 KB
Monthly Cost$1/mo
Twitter/X Pixel
Advertising
Optional
Execution53ms
Transfer13 KB
Monthly Cost$1/mo
These scripts may cost more than they're worth
www.spaceship.com adds 3592ms and costs ~$48/month
spaceship-cdn.com adds 2514ms and costs ~$33/month
spaceship-cdn.com adds 1202ms and costs ~$16/month
spaceship-cdn.com adds 714ms and costs ~$9/month
Unattributable adds 699ms and costs ~$9/month
spaceship-cdn.com adds 481ms and costs ~$6/month
Google Tag Manager adds 476ms and costs ~$6/month
js-agent.newrelic.com adds 330ms and costs ~$4/month
spaceship-cdn.com adds 281ms and costs ~$4/month
spaceship-cdn.com adds 256ms and costs ~$3/month
Google Tag Manager adds 254ms and costs ~$3/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
www.spaceship.com takes 3592ms 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
spaceship-cdn.com takes 2514ms 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
spaceship-cdn.com takes 1202ms 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
spaceship-cdn.com takes 714ms 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 699ms 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
spaceship-cdn.com takes 481ms 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
Google Tag Manager takes 476ms 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
js-agent.newrelic.com takes 330ms 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
spaceship-cdn.com takes 281ms 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
56% of spaceship-cdn.com'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
spaceship-cdn.com takes 256ms 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
59% of spaceship-cdn.com'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
73% of Stripe'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
Google Tag Manager takes 254ms 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
69% of Google Tag Manager'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.