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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
82
GRADE
B
FIX
3
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
88
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
75
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.
82
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.

1.28 s

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

1.64 s

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

0 ms

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

0.027

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

1.73 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.

1.65 s

Page Load Progression

510 ms
1.0 s
1.5 s
2.0 s
2.6 s
3.1 s
3.6 s
4.1 s
Checks
14
6 PASS 3 REVIEW 3 FIX
F
Page Weight Budget
Action
4.9 MB transferred, 167 requests
FIX
4.9 MB transferred, 167 requests
Critical::
Page weighs 7.9 MB (4.9 MB transferred)
Warning::
Images are 3.4 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.4 MB
Warning::
JavaScript is 835 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 835 KB
Info::
Fonts are 464 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 464 KB
Warning::
167 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.0 g CO2 per page load
4.9 MB / 2.4 MB budget
4.9 MB transferred
167 requests
1.0 g CO2 per page load
Images 3.4 MiB 69%
JavaScript 835.3 KiB 17%
Fonts 464.0 KiB 9%
CSS 96.7 KiB 2%
Other 39.3 KiB 1%
HTML 36.4 KiB 1%
Other 36.0 KiB 1%
Other 9.4 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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
98% third-party, 0 ms blocking
FIX
98% third-party, 0 ms blocking
Warning::
Third-party code accounts for 98% of page weight (4.8 MiB of 4.9 MiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
D
JS Execution Cost
Action
2049ms total JS execution
FIX
2049ms total JS execution
Warning::
https://www.transfermarkt.com/: 1513ms CPU time
Warning::
Unattributable: 269ms CPU time
Info::
https://tmsi.akamaized.net/js/svelte-components/mo...: 189ms CPU time
Info::
https://cdn.privacy-mgmt.com/wrapperMessagingWitho...: 79ms CPU time
Info::
Third-party scripts: 536ms (26% of total)

Main Thread Breakdown

Other 42% Style & Layout 28% Script Evaluation 18% Rendering 6% Script Parsing & Compilation 3%
ScriptTotalScriptingParse/CompileParty
https://www.transfermarkt.com/1513ms23ms2ms1st
Unattributable269ms19ms0ms3rd
https://tmsi.akamaized.net/js/svelte-components/most-viewed-players/bundle.js189ms109ms12ms3rd
https://cdn.privacy-mgmt.com/wrapperMessagingWithoutDetection.js79ms65ms6ms3rd
C
Image Optimization
Action
99 images, 0 KB saveable
REVIEW
99 images, 0 KB saveable
Warning::
https://tmssl.akamaized.net//images/logo/homepageS... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageN... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageS... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageW... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.transfermarkt.com/static/singlepicture... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/logo/homepageS... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://tmssl.akamaized.net//images/wappen/homepag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
99 images 3.4 MB
0 oversized -0 KB
75 legacy format
17 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

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

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

Performance issues directly impact user engagement and conversion rates.

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

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

C
JS Bundles
Action
29 scripts, 211 KB unused
REVIEW
29 scripts, 211 KB unused
Warning::
https://tmssl.akamaized.net/ads/tisoomi.com.min.js...: 63 KB unused (93%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://tmsi.akamaized.net/js/svelte-components/mo...: 52 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://tmsi.akamaized.net/js/svelte-components/ga...: 48 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://tmsi.akamaized.net/js/svelte-components/us...: 25 KB unused (25%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.privacy-mgmt.com/wrapperMessagingWitho...: 23 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 211 KB
211 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://tmssl.akamaized.net/ads/tisoomi.com.min.js?lm=177559290268 KB63 KB (93%)✓3rd
https://tmsi.akamaized.net/js/svelte-components/most-viewed-players/bundle.js108 KB52 KB (48%)✓3rd
https://tmsi.akamaized.net/js/svelte-components/game-teaser/bundle.js59 KB48 KB (82%)✓3rd
https://tmsi.akamaized.net/js/svelte-components/userbox/bundle.js98 KB25 KB (25%)✓3rd
https://cdn.privacy-mgmt.com/wrapperMessagingWithoutDetection.js54 KB23 KB (43%)✓3rd
https://tmsi.akamaized.net/js/svelte-components/competition-tables/bundle.js27 KB—✓3rd
https://tmsi.akamaized.net/js/svelte-components/video-playlist/bundle.js50 KB—✓3rd
https://tmssl.akamaized.net/js/functions.js?lm=17755727212 KB—✓3rd
https://tmssl.akamaized.net/js/main_desktop.js?lm=17755727211 KB—✓3rd
https://tmssl.akamaized.net/js/chosen.jquery.js?lm=17755727218 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

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
7 fonts (464 KB)
PASS
7 fonts (464 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

464 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s FCP 1.3 s LCP 1.6 shttps://tmsi.akamaized.net/fonts/SourceSansPro-Regular400.woff2SourceSansPro-Regular40... https://tmsi.akamaized.net/fonts/SourceSansPro-Regular400.woff2 — 61.5 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/SourceSans3VF-Roman.woff2SourceSans3VF-Roman.woff2 https://tmsi.akamaized.net/fonts/SourceSans3VF-Roman.woff2 — 164.2 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/SourceSansPro-Bold700.woff2SourceSansPro-Bold700.w... https://tmsi.akamaized.net/fonts/SourceSansPro-Bold700.woff2 — 60.3 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/oswald-var.woff2oswald-var.woff2 https://tmsi.akamaized.net/fonts/oswald-var.woff2 — 65.2 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/Oswald-Bold700.woff2Oswald-Bold700.woff2 https://tmsi.akamaized.net/fonts/Oswald-Bold700.woff2 — 35.6 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/Oswald-Regular400.woff2Oswald-Regular400.woff2 https://tmsi.akamaized.net/fonts/Oswald-Regular400.woff2 — 34.7 KiB — 0 ms — font-display: swaphttps://tmsi.akamaized.net/fonts/OpenSans-CondensedLight300.woff2OpenSans-CondensedLight... https://tmsi.akamaized.net/fonts/OpenSans-CondensedLight300.woff2 — 42.5 KiB — 0 ms — font-display: swap
SourceSansPro-Regular40... woff2 swap
Size 61 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
SourceSans3VF-Roman.woff2 woff2 swap
Size 164 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
SourceSansPro-Bold700.w... woff2 swap
Size 60 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
oswald-var.woff2 woff2 swap
Size 65 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Oswald-Bold700.woff2 woff2 swap
Size 36 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Oswald-Regular400.woff2 woff2 swap
Size 35 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
OpenSans-CondensedLight... woff2 swap
Size 42 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 ~82 KB and ~164 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+
HTTP Caching
max-age=120 (2 minutes)
PASS
max-age=120 (2 minutes)
Info::
Cache-Control header is set
Got: public, max-age=120, must-revalidate, stale-while-revalidate=30, stale-if-error=300
Info::
Effective TTL: 2 minutes (max-age=120)
Info::
Last-Modified header present
Cache-Control

public, max-age=120, must-revalidate, stale-while-revalidate=30, stale-if-error=300

DirectiveValueMeaning
public—Any cache may store this response
max-age120Cache for 2 minutes
must-revalidate—Must recheck with server after expiry
stale-while-revalidate30Serve stale for 30 seconds while fetching fresh
stale-if-error300
Effective TTL: 120 seconds
Network Waterfall
167 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
26% of JavaScript execution is third-party
First-party Third-party 536ms · 161KB · €6/mo
Unattributable
Other
Costly
Execution 269ms
Transfer 0 KB
Monthly Cost €3/mo
tmsi.akamaized.net
Other
Optional
Execution 189ms
Transfer 108 KB
Unused 48%
Monthly Cost €2/mo
cdn.privacy-mgmt.com
Other
Optional
Execution 79ms
Transfer 54 KB
Unused 43%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 269ms and costs ~€3/month

Unattributable takes 269ms 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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