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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
4
REVIEW
1
PASS
7
INFO
3

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

Mobile Desktop
31
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
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.

5.06 s

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

15.37 s

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

2.19 s

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

0.001

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

7.07 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.

15.54 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
15
7 PASS 1 REVIEW 4 FIX
D
Page Weight Budget
Action
2.2 MB transferred, 96 requests
FIX
2.2 MB transferred, 96 requests
Info::
Page weighs 5.9 MB (2.2 MB transferred)
Warning::
JavaScript is 1.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.1 MB
Info::
96 HTTP requests
Info::
Estimated 0.45 g CO2 per page load
2.2 MB / 2.4 MB budget
2.2 MB transferred
96 requests
0.45 g CO2 per page load
JavaScript 1.1 MiB 53%
Images 722.9 KiB 33%
Other 109.7 KiB 5%
Other 88.0 KiB 4%
HTML 47.0 KiB 2%
Fonts 38.9 KiB 2%
Other 26.3 KiB 1%
CSS 6.9 KiB 0%
Other 1.1 KiB 0%
Other 562 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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
64% third-party, 0 ms blocking
FIX
64% third-party, 0 ms blocking
Warning::
Third-party code accounts for 64% of page weight (1.4 MiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
36%
64%
First-party Third-party
F
JS Execution Cost
Action
8358ms total JS execution
FIX
8358ms total JS execution
Warning::
https://www.notebookcheck.net/: 2235ms CPU time
Warning::
Unattributable: 1332ms CPU time
Warning::
https://cdn.snigelweb.com/prebid/9.43.0/prebid.js?...: 548ms CPU time
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 540ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-XLBG...: 475ms CPU time
Warning::
Third-party scripts: 5657ms (68% of total)

Main Thread Breakdown

Script Evaluation 52% Style & Layout 17% Other 16% Script Parsing & Compilation 9%
ScriptTotalScriptingParse/CompileParty
https://www.notebookcheck.net/2235ms388ms52ms1st
Unattributable1332ms98ms0ms3rd
https://cdn.snigelweb.com/prebid/9.43.0/prebid.js?v=18266-1774866111347548ms433ms113ms3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604020101/pubads_impl.js?cb=31097618540ms428ms96ms3rd
https://www.googletagmanager.com/gtag/js?id=G-XLBGPKWB3N475ms373ms97ms3rd
https://www.notebookcheck.net/cdn-cgi/challenge-platform/scripts/jsd/main.js466ms450ms4ms1st
https://fundingchoicesmessages.google.com/i/pub-9885689965057708?ers=1417ms332ms37ms3rd
https://c.amazon-adsystem.com/aax2/apstag.js348ms274ms55ms3rd
https://html-load.com/loader.min.js317ms221ms28ms3rd
https://adengine.snigelweb.com/notebookcheck.net/18266-1774866111347/adngin.js315ms273ms36ms3rd

Showing top 10 of 21 scripts

F
JS Bundles
Action
28 scripts, 661 KB unused
FIX
28 scripts, 661 KB unused
Warning::
https://cdn.snigelweb.com/prebid/9.43.0/prebid.js?...: 149 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 129 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://fundingchoicesmessages.google.com/i/221527...: 65 KB unused (95%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-XLBG...: 64 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://c.amazon-adsystem.com/aax2/apstag.js: 50 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 661 KB
661 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.snigelweb.com/prebid/9.43.0/prebid.js?v=18266-1774866111347197 KB149 KB (76%)✓3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604020101/pubads_impl.js?cb=31097618183 KB129 KB (71%)✓3rd
https://fundingchoicesmessages.google.com/i/22152718?ers=369 KB65 KB (95%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-XLBGPKWB3N172 KB64 KB (37%)✓3rd
https://c.amazon-adsystem.com/aax2/apstag.js90 KB50 KB (56%)✓3rd
https://cdn.snigelweb.com/intentiq/IIQAgent.js46 KB39 KB (86%)✓3rd
https://adengine.snigelweb.com/notebookcheck.net/18266-1774866111347/adngin.js66 KB36 KB (55%)✓3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js54 KB35 KB (65%)✓3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js0 KB35 KB (65%)✓3rd
https://fundingchoicesmessages.google.com/i/pub-9885689965057708?ers=170 KB35 KB (51%)✓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

B
Image Optimization
38 images, 0 KB saveable
REVIEW
38 images, 0 KB saveable
Warning::
https://www.notebookcheck.net/fileadmin/templates/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
38 images 723 KB
0 oversized -0 KB
24 legacy format
1 missing dimensions CLS 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 (39 KB)
PASS
2 fonts (39 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

39 KB total

Render-blocking

0

of 2

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 5.1 s LCP 15.4 shttps://cdn.snigelweb.com/resources/fonts/roboto-bold-webfont.woff2roboto-bold-webfont.woff2 https://cdn.snigelweb.com/resources/fonts/roboto-bold-webfont.woff2 — 19.6 KiB — 0 ms — font-display: swaphttps://cdn.snigelweb.com/resources/fonts/roboto-regular-webfont.woff2roboto-regular-webfont.... https://cdn.snigelweb.com/resources/fonts/roboto-regular-webfont.woff2 — 19.3 KiB — 0 ms — font-display: swap
roboto-bold-webfont.woff2 woff2 swap
Size 20 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
roboto-regular-webfont.... woff2 swap
Size 19 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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

A+
HTTP Caching
max-age=1800 (30 minutes)
PASS
max-age=1800 (30 minutes)
Info::
Cache-Control header is set
Got: max-age=1800
Info::
Effective TTL: 30 minutes (max-age=1800)
Info::
Last-Modified header present
Cache-Control

max-age=1800

DirectiveValueMeaning
max-age1800Cache for 30 minutes
Effective TTL: 1800 seconds
Network Waterfall
96 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
68% of JavaScript execution is third-party
First-party Third-party 5657ms · 1096KB · €17/mo
Unattributable
Other
Costly
Execution 1332ms
Transfer 0 KB
Monthly Cost €4/mo
cdn.snigelweb.com
Other
Costly
Execution 548ms
Transfer 197 KB
Unused 76%
Monthly Cost €2/mo
securepubads.g.doubleclick.net
Other
Costly
Execution 540ms
Transfer 183 KB
Unused 71%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 475ms
Transfer 172 KB
Unused 37%
Monthly Cost €1/mo
fundingchoicesmessages.google.com
Other
Costly
Execution 417ms
Transfer 70 KB
Unused 51%
Monthly Cost €1/mo
c.amazon-adsystem.com
Other
Costly
Execution 348ms
Transfer 90 KB
Unused 56%
Monthly Cost €1/mo
html-load.com
Other
Costly
Execution 317ms
Transfer 47 KB
Monthly Cost €1/mo
adengine.snigelweb.com
Other
Costly
Execution 315ms
Transfer 66 KB
Unused 55%
Monthly Cost €1/mo
cdn.snigelweb.com
Other
Costly
Execution 295ms
Transfer 14 KB
Monthly Cost €1/mo
cdn.snigelweb.com
Other
Costly
Execution 206ms
Transfer 11 KB
Monthly Cost €1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution 151ms
Transfer 34 KB
Monthly Cost €0/mo
pagead2.googlesyndication.com
Other
Optional
Execution 117ms
Transfer 0 KB
Unused 65%
Monthly Cost €0/mo
config.aps.amazon-adsystem.com
Other
Optional
Execution 112ms
Transfer 7 KB
Monthly Cost €0/mo
secure.cdn.fastclick.net
Other
Optional
Execution 91ms
Transfer 22 KB
Monthly Cost €0/mo
cdn1.anonymised.io
Other
Optional
Execution 88ms
Transfer 24 KB
Monthly Cost €0/mo
cdn.snigelweb.com
Other
Optional
Execution 81ms
Transfer 46 KB
Unused 86%
Monthly Cost €0/mo
static.cloudflareinsights.com
Other
Optional
Execution 81ms
Transfer 11 KB
Monthly Cost €0/mo
fundingchoicesmessages.google.com
Other
Optional
Execution 76ms
Transfer 69 KB
Unused 95%
Monthly Cost €0/mo
cdn.id5-sync.com
Other
Optional
Execution 66ms
Transfer 35 KB
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • Unattributable adds 1332ms and costs ~€4/month
  • cdn.snigelweb.com adds 548ms and costs ~€2/month
  • securepubads.g.doubleclick.net adds 540ms and costs ~€2/month
  • Google Tag Manager adds 475ms and costs ~€1/month
  • fundingchoicesmessages.google.com adds 417ms and costs ~€1/month
  • c.amazon-adsystem.com adds 348ms and costs ~€1/month
  • html-load.com adds 317ms and costs ~€1/month
  • adengine.snigelweb.com adds 315ms and costs ~€1/month
  • cdn.snigelweb.com adds 295ms and costs ~€1/month
  • cdn.snigelweb.com adds 206ms and costs ~€1/month

68% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Unattributable takes 1332ms 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.snigelweb.com takes 548ms 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

76% of cdn.snigelweb.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 540ms 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

71% 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

Google Tag Manager takes 475ms 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

fundingchoicesmessages.google.com takes 417ms 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

51% of fundingchoicesmessages.google.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

c.amazon-adsystem.com takes 348ms 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 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

html-load.com takes 317ms 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

adengine.snigelweb.com takes 315ms 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

55% of adengine.snigelweb.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.snigelweb.com takes 295ms 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.snigelweb.com takes 206ms 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

65% of pagead2.googlesyndication.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

86% of cdn.snigelweb.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

95% of fundingchoicesmessages.google.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

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-03-07 — 2026-04-03)

LCP (p75)

924 ms

95% good

INP (p75)

63 ms

96% good

CLS (p75)

0.000

97% good

FCP (p75)

682 ms

TTFB (p75)

321 ms

This origin passes Core Web Vitals assessment
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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