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
41 images, 0 KB saveable
REVIEW
41 images, 0 KB saveable
Warning::
!
https://storage.googleapis.com/marketing.thingiver... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
41images4.2 MB
0oversized-0 KB
22legacy format
1missing dimensionsCLS 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+
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
2 fonts (31 KB)
PASS
2 fonts (31 KB)
Info::
i
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
31 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
7cHpv4kjgoGqM7E_DMs5yng...woff2swap
Size15 KB
Load time26 ms
Start672 ms
RiskFOUT — text flashes from fallback to web font
7cHqv4kjgoGqM7E30-8s51o...woff2swap
Size15 KB
Load time34 ms
Start673 ms
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)
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
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
116 requests over 4855ms
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-party12964ms · 1672KB · $172/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
consent.cookiebot.com
consent.cookiebot.com
Other
6874ms
294 KB
—
$91/mo
Costly
consent.cookiebot.com
consent.cookiebot.com
Other
1201ms
36 KB
—
$16/mo
Costly
Unattributable
Unattributable
Other
900ms
0 KB
—
$12/mo
Costly
cdn.thingiverse.com
cdn.thingiverse.com
Other
821ms
165 KB
67%
$11/mo
Costly
cdn.confiant-integrations.net
cdn.confiant-integrations.net
Other
727ms
142 KB
57%
$10/mo
Costly
www.thingiverse.com
www.thingiverse.com
Other
555ms
3 KB
—
$7/mo
Costly
cdn.fuseplatform.net
cdn.fuseplatform.net
Other
375ms
110 KB
29%
$5/mo
Costly
cdn.thingiverse.com
cdn.thingiverse.com
Other
294ms
91 KB
57%
$4/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
250ms
188 KB
69%
$3/mo
Costly
www.thingiverse.com
www.thingiverse.com
Other
202ms
0 KB
—
$3/mo
Costly
cdn.fuseplatform.net
cdn.fuseplatform.net
Other
164ms
203 KB
80%
$2/mo
Optional
c.amazon-adsystem.com
c.amazon-adsystem.com
Other
113ms
91 KB
55%
$1/mo
Optional
consent.cookiebot.com
consent.cookiebot.com
Other
108ms
88 KB
73%
$1/mo
Optional
cdn.thingiverse.com
cdn.thingiverse.com
Other
83ms
9 KB
—
$1/mo
Optional
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
72ms
34 KB
—
$1/mo
Optional
visitors.thingiverse.com
visitors.thingiverse.com
Other
59ms
35 KB
—
$1/mo
Optional
cdn.thingiverse.com
cdn.thingiverse.com
Other
56ms
102 KB
59%
$1/mo
Optional
scaredslip.com
scaredslip.com
Other
56ms
36 KB
—
$1/mo
Optional
cdn.fuseplatform.net
cdn.fuseplatform.net
Other
55ms
45 KB
47%
$1/mo
Optional
consent.cookiebot.com
Other
Costly
Execution6874ms
Transfer294 KB
Monthly Cost$91/mo
consent.cookiebot.com
Other
Costly
Execution1201ms
Transfer36 KB
Monthly Cost$16/mo
Unattributable
Other
Costly
Execution900ms
Transfer0 KB
Monthly Cost$12/mo
cdn.thingiverse.com
Other
Costly
Execution821ms
Transfer165 KB
Unused67%
Monthly Cost$11/mo
cdn.confiant-integrations.net
Other
Costly
Execution727ms
Transfer142 KB
Unused57%
Monthly Cost$10/mo
www.thingiverse.com
Other
Costly
Execution555ms
Transfer3 KB
Monthly Cost$7/mo
cdn.fuseplatform.net
Other
Costly
Execution375ms
Transfer110 KB
Unused29%
Monthly Cost$5/mo
cdn.thingiverse.com
Other
Costly
Execution294ms
Transfer91 KB
Unused57%
Monthly Cost$4/mo
securepubads.g.doubleclick.net
Other
Costly
Execution250ms
Transfer188 KB
Unused69%
Monthly Cost$3/mo
www.thingiverse.com
Other
Costly
Execution202ms
Transfer0 KB
Monthly Cost$3/mo
cdn.fuseplatform.net
Other
Optional
Execution164ms
Transfer203 KB
Unused80%
Monthly Cost$2/mo
c.amazon-adsystem.com
Other
Optional
Execution113ms
Transfer91 KB
Unused55%
Monthly Cost$1/mo
consent.cookiebot.com
Other
Optional
Execution108ms
Transfer88 KB
Unused73%
Monthly Cost$1/mo
cdn.thingiverse.com
Other
Optional
Execution83ms
Transfer9 KB
Monthly Cost$1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution72ms
Transfer34 KB
Monthly Cost$1/mo
visitors.thingiverse.com
Other
Optional
Execution59ms
Transfer35 KB
Monthly Cost$1/mo
cdn.thingiverse.com
Other
Optional
Execution56ms
Transfer102 KB
Unused59%
Monthly Cost$1/mo
scaredslip.com
Other
Optional
Execution56ms
Transfer36 KB
Monthly Cost$1/mo
cdn.fuseplatform.net
Other
Optional
Execution55ms
Transfer45 KB
Unused47%
Monthly Cost$1/mo
These scripts may cost more than they're worth
consent.cookiebot.com adds 6874ms and costs ~$91/month
consent.cookiebot.com adds 1201ms and costs ~$16/month
Unattributable adds 900ms and costs ~$12/month
cdn.thingiverse.com adds 821ms and costs ~$11/month
cdn.confiant-integrations.net adds 727ms and costs ~$10/month
www.thingiverse.com adds 555ms and costs ~$7/month
cdn.fuseplatform.net adds 375ms and costs ~$5/month
cdn.thingiverse.com adds 294ms and costs ~$4/month
securepubads.g.doubleclick.net adds 250ms and costs ~$3/month
www.thingiverse.com adds 202ms 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
consent.cookiebot.com takes 6874ms 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
consent.cookiebot.com takes 1201ms 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 900ms 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
cdn.thingiverse.com takes 821ms 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
67% of cdn.thingiverse.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
cdn.confiant-integrations.net takes 727ms 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
57% of cdn.confiant-integrations.net'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
www.thingiverse.com takes 555ms 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
cdn.fuseplatform.net takes 375ms 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
cdn.thingiverse.com takes 294ms 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
57% of cdn.thingiverse.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
securepubads.g.doubleclick.net takes 250ms 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 securepubads.g.doubleclick.net'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
www.thingiverse.com takes 202ms 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
80% of cdn.fuseplatform.net'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
55% of c.amazon-adsystem.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 consent.cookiebot.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
59% of cdn.thingiverse.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.