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https://www.wasabi.com

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
74
GRADE
C
FIX
5
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
36
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

3.12 s

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

15.82 s

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

1.74 s

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

0.078

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

6.08 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.

19.74 s

Page Load Progression

512 ms
1.0 s
1.5 s
2.0 s
2.6 s
3.1 s
3.6 s
4.1 s
Checks
16
7 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
2.8 MB transferred, 90 requests
FIX
2.8 MB transferred, 90 requests
Warning::
Page weighs 7.8 MB (2.8 MB transferred)
Warning::
JavaScript is 1.6 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.6 MB
Info::
90 HTTP requests
Info::
Estimated 0.58 g CO2 per page load
2.8 MB / 2.4 MB budget
2.8 MB transferred
90 requests
0.58 g CO2 per page load
JavaScript 1.6 MiB 59%
Images 922.7 KiB 33%
Other 138.3 KiB 5%
HTML 55.5 KiB 2%
Fonts 34.8 KiB 1%
Other 8.4 KiB 0%
CSS 4.7 KiB 0%
Other 818 B 0%
Other 554 B 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

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 (2.8 MiB of 2.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5158ms total JS execution
FIX
5158ms total JS execution
Warning::
https://wasabi.com/_next/static/chunks/framework-6...: 1230ms CPU time
Warning::
https://wasabi.com/_next/static/chunks/pages/_app-...: 1074ms CPU time
Warning::
Unattributable: 549ms CPU time
Warning::
https://wasabi.com/: 543ms CPU time
Warning::
https://www.googletagmanager.com/gtag/destination?...: 369ms CPU time
Warning::
Third-party scripts: 5158ms (100% of total)

Main Thread Breakdown

Script Evaluation 60% Other 14% Style & Layout 10% Script Parsing & Compilation 9%
ScriptTotalScriptingParse/CompileParty
https://wasabi.com/_next/static/chunks/framework-63d16ff2f5e08230.js1230ms1044ms10ms3rd
https://wasabi.com/_next/static/chunks/pages/_app-8d0f6b178c065ffd.js1074ms551ms184ms3rd
Unattributable549ms21ms0ms3rd
https://wasabi.com/543ms9ms0ms3rd
https://www.googletagmanager.com/gtag/destination?id=G-JE5RX701S0&cx=c&gtm=4e6460369ms316ms50ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PLB3PMW306ms236ms59ms3rd
https://cdn.optimizely.com/js/5552864383205376.js300ms269ms25ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-853928254&cx=c&gtm=4e6460186ms155ms30ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-11367212055&cx=c&gtm=4e6460163ms133ms30ms3rd
https://www.googletagmanager.com/gtag/js?id=DC-9955201&cx=c&gtm=4e6460160ms132ms25ms3rd

Showing top 10 of 13 scripts

F
JS Bundles
Action
20 scripts, 653 KB unused
FIX
20 scripts, 653 KB unused
Warning::
https://wasabi.com/_next/static/chunks/pages/_app-...: 223 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PLB...: 76 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/destination?...: 69 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-113...: 62 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-853...: 61 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 653 KB
653 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://wasabi.com/_next/static/chunks/pages/_app-8d0f6b178c065ffd.js552 KB223 KB (40%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PLB3PMW180 KB76 KB (42%)✓3rd
https://www.googletagmanager.com/gtag/destination?id=G-JE5RX701S0&cx=c&gtm=4e6460178 KB69 KB (39%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-11367212055&cx=c&gtm=4e6460144 KB62 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-853928254&cx=c&gtm=4e6460144 KB61 KB (42%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-8316818&cx=c&gtm=4e6460129 KB60 KB (47%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-9955201&cx=c&gtm=4e6460131 KB60 KB (46%)✓3rd
https://cdn.optimizely.com/js/5552864383205376.js96 KB43 KB (44%)✓3rd
https://wasabi.com/.netlify/scripts/rum4 KB—✓3rd
https://wasabi.com/_next/static/chunks/pages/index-1ab2ca1ac178127d.js3 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

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

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

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

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

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
43 images, 0 KB saveable
REVIEW
43 images, 0 KB saveable
Info::
All images are well-optimized
43 images 923 KB
0 oversized -0 KB
13 legacy format
0 missing dimensions CLS risk
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+
Font Loading
1 fonts (35 KB)
PASS
1 fonts (35 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

35 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 3.1 s LCP 15.8 shttps://wasabi.com/_next/static/media/904be59b21bd51cb-s.p.woff2904be59b21bd51cb-s.p.woff2 https://wasabi.com/_next/static/media/904be59b21bd51cb-s.p.woff2 — 34.8 KiB — 0 ms — font-display: swap
904be59b21bd51cb-s.p.woff2 woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
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+
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
3 hints, 0 missing preconnects
PASS
3 hints, 0 missing preconnects
Info::
Page uses 3 resource hint(s)

Current Resource Hints

preconnect
—
preload
2
dns-prefetch
—
prefetch
1

3 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
90 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 5158ms · 1702KB · €90/mo
wasabi.com
Other
Costly
Execution 1230ms
Transfer 43 KB
Monthly Cost €21/mo
wasabi.com
Other
Costly
Execution 1074ms
Transfer 552 KB
Unused 40%
Monthly Cost €19/mo
Unattributable
Other
Costly
Execution 549ms
Transfer 0 KB
Monthly Cost €10/mo
wasabi.com
Other
Costly
Execution 543ms
Transfer 54 KB
Monthly Cost €9/mo
Google Tag Manager
Tag Manager
Costly
Execution 369ms
Transfer 178 KB
Unused 39%
Monthly Cost €6/mo
Google Tag Manager
Tag Manager
Costly
Execution 306ms
Transfer 180 KB
Unused 42%
Monthly Cost €5/mo
Optimizely
A/B Testing
Costly
Execution 300ms
Transfer 96 KB
Unused 44%
Monthly Cost €5/mo
Google Tag Manager
Tag Manager
Optional
Execution 186ms
Transfer 144 KB
Unused 42%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Optional
Execution 163ms
Transfer 144 KB
Unused 43%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Optional
Execution 160ms
Transfer 131 KB
Unused 46%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Optional
Execution 138ms
Transfer 129 KB
Unused 47%
Monthly Cost €2/mo
wasabi.com
Other
Optional
Execution 89ms
Transfer 32 KB
Monthly Cost €2/mo
www.redditstatic.com
Other
Optional
Execution 50ms
Transfer 19 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • wasabi.com adds 1230ms and costs ~€21/month
  • wasabi.com adds 1074ms and costs ~€19/month
  • Unattributable adds 549ms and costs ~€10/month
  • wasabi.com adds 543ms and costs ~€9/month
  • Google Tag Manager adds 369ms and costs ~€6/month
  • Google Tag Manager adds 306ms and costs ~€5/month
  • Optimizely adds 300ms and costs ~€5/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

wasabi.com takes 1230ms 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

wasabi.com takes 1074ms 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 549ms 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

wasabi.com takes 543ms 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 369ms 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 306ms 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

Optimizely takes 300ms 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

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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