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https://www.kraken.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
0
PASS
8
INFO
2

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

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
74
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.

1.08 s

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

1.30 s

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

1.51 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.

1.54 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.

4.37 s

Page Load Progression

822 ms
1.6 s
2.5 s
3.3 s
4.1 s
4.9 s
5.8 s
6.6 s
Checks
14
8 PASS 4 FIX
F
Page Weight Budget
Action
4.1 MB transferred, 132 requests
FIX
4.1 MB transferred, 132 requests
Critical::
Page weighs 9.4 MB (4.1 MB transferred)
Warning::
JavaScript is 993 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 993 KB
Info::
Fonts are 213 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 213 KB
Warning::
132 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.86 g CO2 per page load
4.1 MB / 2.4 MB budget
4.1 MB transferred
132 requests
0.86 g CO2 per page load
Other 1.9 MiB 45%
JavaScript 992.9 KiB 24%
Images 775.1 KiB 18%
HTML 217.1 KiB 5%
Fonts 213.2 KiB 5%
CSS 111.3 KiB 3%
Other 7.3 KiB 0%
Other 2.3 KiB 0%
Other 0 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

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

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 (2.6 MiB of 4.1 MiB)
Info::
Third-party blocking time is low (0 ms)
36%
64%
First-party Third-party
F
JS Execution Cost
Action
4457ms total JS execution
FIX
4457ms total JS execution
Warning::
https://www.kraken.com/_static/js/e0b2bdd3.js: 2970ms CPU time
Warning::
https://www.kraken.com/: 1020ms CPU time
Info::
Unattributable: 248ms CPU time
Info::
https://www.kraken.com/_static/js/a1801c53.js: 219ms CPU time
Info::
Third-party scripts: 248ms (6% of total)

Main Thread Breakdown

Script Evaluation 59% Other 13% Style & Layout 12% Parse HTML & CSS 6% Rendering 3% Garbage Collection 3% Script Parsing & Compilation 3%
ScriptTotalScriptingParse/CompileParty
https://www.kraken.com/_static/js/e0b2bdd3.js2970ms2407ms5ms1st
https://www.kraken.com/1020ms31ms77ms1st
Unattributable248ms41ms0ms3rd
https://www.kraken.com/_static/js/a1801c53.js219ms164ms26ms1st
D
JS Bundles
Action
62 scripts, 387 KB unused
FIX
62 scripts, 387 KB unused
Warning::
https://www.kraken.com/_static/js/a1801c53.js: 179 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.kraken.com/_static/js/async/de47aef5.j...: 81 KB unused (86%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.kraken.com/_static/js/e5fbbb7f.js: 78 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.kraken.com/_static/js/async/ad9a5896.j...: 24 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.kraken.com/_static/js/e0b2bdd3.js: 24 KB unused (36%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 387 KB
387 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.kraken.com/_static/js/a1801c53.js405 KB179 KB (44%)✓1st
https://www.kraken.com/_static/js/async/de47aef5.js95 KB81 KB (86%)✓1st
https://www.kraken.com/_static/js/e5fbbb7f.js170 KB78 KB (46%)✓1st
https://www.kraken.com/_static/js/async/ad9a5896.js33 KB24 KB (72%)✓1st
https://www.kraken.com/_static/js/e0b2bdd3.js67 KB24 KB (36%)✓1st
https://www.kraken.com/js/_seg.ced38012.js0 KB—✓1st
https://www.kraken.com/_static/js/async/6aba3c8c.js7 KB—✓1st
https://www.kraken.com/_static/js/async/6999667a.js8 KB—✓1st
https://www.kraken.com/_static/js/async/28a495b3.js7 KB—✓1st
https://www.kraken.com/_static/js/async/023fa222.js6 KB—✓1st

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

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
51 images, 0 KB saveable
PASS
51 images, 0 KB saveable
Warning::
https://assets-cms.kraken.com/images/51n36hrp/faca... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets-cms.kraken.com/images/51n36hrp/faca... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets-cms.kraken.com/images/51n36hrp/faca... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets-cms.kraken.com/images/51n36hrp/faca... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
51 images 775 KB
0 oversized -0 KB
0 legacy format
4 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

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

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

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+
Font Loading
5 fonts (213 KB)
PASS
5 fonts (213 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

213 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 1.1 s LCP 1.3 shttps://www.kraken.com/_assets/fonts/Kraken-Product-Regular.woff2Kraken-Product-Regular.... https://www.kraken.com/_assets/fonts/Kraken-Product-Regular.woff2 — 36.3 KiB — 0 ms — font-display: swaphttps://www.kraken.com/_assets/fonts/Kraken-Product-Medium.woff2Kraken-Product-Medium.w... https://www.kraken.com/_assets/fonts/Kraken-Product-Medium.woff2 — 36.4 KiB — 0 ms — font-display: swaphttps://www.kraken.com/_assets/fonts/Kraken-Brand-Bold.otfKraken-Brand-Bold.otf https://www.kraken.com/_assets/fonts/Kraken-Brand-Bold.otf — 52.6 KiB — 0 ms — font-display: swaphttps://www.kraken.com/_assets/fonts/Kraken-Brand-Regular.otfKraken-Brand-Regular.otf https://www.kraken.com/_assets/fonts/Kraken-Brand-Regular.otf — 51.6 KiB — 0 ms — font-display: swaphttps://www.kraken.com/_assets/fonts/Kraken-Product-Bold.woff2Kraken-Product-Bold.woff2 https://www.kraken.com/_assets/fonts/Kraken-Product-Bold.woff2 — 36.4 KiB — 0 ms — font-display: swap
Kraken-Product-Regular.... woff2 swap
Size 36 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Kraken-Product-Medium.w... woff2 swap
Size 36 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Kraken-Brand-Bold.otf otf swap
Size 53 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Kraken-Brand-Regular.otf otf swap
Size 52 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Kraken-Product-Bold.woff2 woff2 swap
Size 36 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)

Fixing the unchecked items could save ~31 KB and ~62 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+
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=300 (5 minutes)
PASS
max-age=300 (5 minutes)
Info::
Cache-Control header is set
Got: max-age=300, public, stale-if-error=604800, stale-while-revalidate=86400
Info::
Effective TTL: 5 minutes (max-age=300)
Info::
Last-Modified header present
Cache-Control

max-age=300, public, stale-if-error=604800, stale-while-revalidate=86400

DirectiveValueMeaning
max-age300Cache for 5 minutes
public—Any cache may store this response
stale-if-error604800
stale-while-revalidate86400Serve stale for 1 day while fetching fresh
Effective TTL: 300 seconds
Network Waterfall
132 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
6% of JavaScript execution is third-party
First-party Third-party 248ms · 0KB · €4/mo
Unattributable
Other
Costly
Execution 248ms
Transfer 0 KB
Monthly Cost €4/mo

These scripts may cost more than they're worth

  • Unattributable adds 248ms and costs ~€4/month

Unattributable takes 248ms 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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