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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
25
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
76
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
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.

9.51 s

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

35.40 s

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

5.21 s

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

0.000

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

16.08 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.

40.07 s

Page Load Progression

5.4 s
10.8 s
16.2 s
21.6 s
27.0 s
32.4 s
37.8 s
43.2 s
Checks
16
8 PASS 2 REVIEW 4 FIX
F
Page Weight Budget
Action
6.1 MB transferred, 453 requests
FIX
6.1 MB transferred, 453 requests
Critical::
Page weighs 26.1 MB (6.1 MB transferred)
Warning::
JavaScript is 2.3 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.3 MB
Warning::
453 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.3 g CO2 per page load
6.1 MB / 2.4 MB budget
6.1 MB transferred
453 requests
1.3 g CO2 per page load
JavaScript 2.3 MiB 38%
Other 1.8 MiB 29%
Other 1.0 MiB 17%
Images 705.9 KiB 11%
HTML 141.4 KiB 2%
CSS 127.9 KiB 2%
Fonts 32.3 KiB 1%
Other 5.2 KiB 0%
Other 2.6 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

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
61% third-party, 0 ms blocking
FIX
61% third-party, 0 ms blocking
Warning::
Third-party code accounts for 61% of page weight (3.7 MiB of 6.1 MiB)
Info::
Third-party blocking time is low (0 ms)
39%
61%
First-party Third-party
F
JS Execution Cost
Action
33651ms total JS execution
FIX
33651ms total JS execution
Warning::
https://www.premierleague.com/resources/v1.43.2/sc...: 11580ms CPU time
Warning::
https://sdk.mvp.fan/web-sdk/0.34.2/index.js: 8530ms CPU time
Warning::
Unattributable: 4292ms CPU time
Warning::
https://cdn.optimizely.com/js/5530288147660800.js: 2956ms CPU time
Warning::
https://www.premierleague.com/en: 1045ms CPU time
Warning::
Third-party scripts: 20751ms (62% of total)

Main Thread Breakdown

Script Evaluation 41% Other 28% Style & Layout 20% Script Parsing & Compilation 5% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.premierleague.com/resources/v1.43.2/scripts/bundle-es.min.js11580ms4488ms121ms1st
https://sdk.mvp.fan/web-sdk/0.34.2/index.js8530ms3324ms337ms3rd
Unattributable4292ms494ms0ms3rd
https://cdn.optimizely.com/js/5530288147660800.js2956ms2308ms134ms3rd
https://www.premierleague.com/en1045ms22ms7ms1st
https://static.chartbeat.com/js/chartbeat.js649ms204ms18ms3rd
https://assets.adobedtm.com/e7ad550d4f82/693c01019a2b/launch-a4f579b5dcc4.min.js590ms439ms100ms3rd
https://www.googletagmanager.com/gtag/js?id=GT-WFFZ7FXF&cx=c&gtm=4e6460427ms360ms51ms3rd
https://cdn-ukwest.onetrust.com/scripttemplates/202502.1.0/otBannerSdk.js412ms236ms103ms3rd
https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js400ms259ms59ms3rd

Showing top 10 of 28 scripts

F
JS Bundles
Action
122 scripts, 2.1 MB unused
FIX
122 scripts, 2.1 MB unused
Warning::
https://imasdk.googleapis.com/js/sdkloader/ima3.js: 351 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://imasdk.googleapis.com/js/sdkloader/ima3.js: 351 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 139 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://securepubads.g.doubleclick.net/pagead/mana...: 139 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://sdk.mvp.fan/web-sdk/0.34.2/index.js: 123 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 2.1 MB
2142 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://imasdk.googleapis.com/js/sdkloader/ima3.js145 KB351 KB (76%)✓3rd
https://imasdk.googleapis.com/js/sdkloader/ima3.js0 KB351 KB (76%)✓3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604020101/pubads_impl.js183 KB139 KB (76%)✓3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604020101/pubads_impl.js0 KB139 KB (76%)✓3rd
https://sdk.mvp.fan/web-sdk/0.34.2/index.js0 KB123 KB (62%)✓3rd
https://sdk.mvp.fan/web-sdk/0.34.2/index.js200 KB123 KB (62%)✓3rd
https://sdk.mvp.fan/web-sdk/js/hls.js@1.5.20.js122 KB110 KB (91%)✓3rd
https://www.premierleague.com/resources/v1.43.2/scripts/bundle-es.min.js0 KB97 KB (43%)✓1st
https://www.premierleague.com/resources/v1.43.2/scripts/bundle-es.min.js228 KB97 KB (43%)✓1st
https://www.premierleague.com/resources/v1.43.2/scripts/copilot-thread.js115 KB87 KB (78%)✓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

B
Image Optimization
93 images, 0 KB saveable
REVIEW
93 images, 0 KB saveable
Info::
All images are well-optimized
93 images 649 KB
0 oversized -0 KB
59 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
4 fonts (32 KB)
PASS
4 fonts (32 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

32 KB total

Render-blocking

0

of 4

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 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s FCP 9.5 s LCP 35.4 shttps://www.premierleague.com/resources/v1.43.2/fonts/PremierLeagueW01-Regular.woff2PremierLeagueW01-Regula... https://www.premierleague.com/resources/v1.43.2/fonts/PremierLeagueW01-Regular.woff2 — 16.5 KiB — 0 ms — font-display: swaphttps://www.premierleague.com/resources/v1.43.2/fonts/PremierLeagueW01-Bold.woff2PremierLeagueW01-Bold.w... https://www.premierleague.com/resources/v1.43.2/fonts/PremierLeagueW01-Bold.woff2 — 15.8 KiB — 0 ms — font-display: swaphttps://www.premierleague.com/resources/v1.43.2/fonts/PremierLeagueW01-Regular.woff2PremierLeagueW01-Regula... https://www.premierleague.com/resources/v1.43.2/fonts/PremierLeagueW01-Regular.woff2 — 0 B — 0 ms — font-display: swaphttps://www.premierleague.com/resources/v1.43.2/fonts/PremierLeagueW01-Bold.woff2PremierLeagueW01-Bold.w... https://www.premierleague.com/resources/v1.43.2/fonts/PremierLeagueW01-Bold.woff2 — 0 B — 0 ms — font-display: swap
PremierLeagueW01-Regula... woff2 swap
Size 17 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
PremierLeagueW01-Bold.w... woff2 swap
Size 16 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
PremierLeagueW01-Regula... woff2 swap
Size 0 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
PremierLeagueW01-Bold.w... woff2 swap
Size 0 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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
1
preload
1
dns-prefetch
—
prefetch
—

2 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
A
HTTP Caching
max-age=30 (30 seconds)
PASS
max-age=30 (30 seconds)
Info::
Cache-Control header is set
Got: max-age=30, stale-while-revalidate=600, stale-if-error=86400
Info::
Effective TTL: 30 seconds (max-age=30)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=30, stale-while-revalidate=600, stale-if-error=86400

DirectiveValueMeaning
max-age30Cache for 30 seconds
stale-while-revalidate600Serve stale for 10 minutes while fetching fresh
stale-if-error86400
Effective TTL: 30 seconds
Network Waterfall
453 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
62% of JavaScript execution is third-party
First-party Third-party 20751ms · 960KB · €360/mo
sdk.mvp.fan
Other
Costly
Execution 8530ms
Transfer 0 KB
Unused 62%
Monthly Cost €148/mo
Unattributable
Other
Costly
Execution 4292ms
Transfer 0 KB
Monthly Cost €75/mo
Optimizely
A/B Testing
Costly
Execution 2956ms
Transfer 0 KB
Unused 43%
Monthly Cost €51/mo
static.chartbeat.com
Other
Costly
Execution 649ms
Transfer 0 KB
Monthly Cost €11/mo
assets.adobedtm.com
Other
Costly
Execution 590ms
Transfer 0 KB
Unused 38%
Monthly Cost €10/mo
Google Tag Manager
Tag Manager
Costly
Execution 427ms
Transfer 143 KB
Unused 39%
Monthly Cost €7/mo
cdn-ukwest.onetrust.com
Other
Costly
Execution 412ms
Transfer 0 KB
Unused 53%
Monthly Cost €7/mo
analytics.tiktok.com
Other
Costly
Execution 400ms
Transfer 110 KB
Unused 51%
Monthly Cost €7/mo
Google Tag Manager
Tag Manager
Costly
Execution 391ms
Transfer 0 KB
Monthly Cost €7/mo
securepubads.g.doubleclick.net
Other
Costly
Execution 336ms
Transfer 0 KB
Unused 76%
Monthly Cost €6/mo
Google Tag Manager
Tag Manager
Costly
Execution 304ms
Transfer 129 KB
Unused 44%
Monthly Cost €5/mo
Google Tag Manager
Tag Manager
Costly
Execution 285ms
Transfer 129 KB
Unused 43%
Monthly Cost €5/mo
securepubads.g.doubleclick.net
Other
Costly
Execution 214ms
Transfer 0 KB
Monthly Cost €4/mo
Facebook Pixel
Advertising
Optional
Execution 159ms
Transfer 95 KB
Unused 36%
Monthly Cost €3/mo
imasdk.googleapis.com
Other
Optional
Execution 129ms
Transfer 145 KB
Unused 76%
Monthly Cost €2/mo
Facebook Pixel
Advertising
Optional
Execution 124ms
Transfer 37 KB
Monthly Cost €2/mo
pagead2.googlesyndication.com
Other
Optional
Execution 107ms
Transfer 0 KB
Monthly Cost €2/mo
pixel.byspotify.com
Other
Optional
Execution 101ms
Transfer 10 KB
Monthly Cost €2/mo
translations.premier-league-prod.pulselive.com
Other
Optional
Execution 81ms
Transfer 0 KB
Monthly Cost €1/mo
sdk.mvp.fan
Other
Optional
Execution 79ms
Transfer 122 KB
Unused 91%
Monthly Cost €1/mo
Twitter/X Embed
Social
Optional
Execution 69ms
Transfer 0 KB
Monthly Cost €1/mo
cdn-ukwest.onetrust.com
Other
Optional
Execution 66ms
Transfer 0 KB
Monthly Cost €1/mo
analytics.tiktok.com
Other
Optional
Execution 52ms
Transfer 40 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • sdk.mvp.fan adds 8530ms and costs ~€148/month
  • Unattributable adds 4292ms and costs ~€75/month
  • Optimizely adds 2956ms and costs ~€51/month
  • static.chartbeat.com adds 649ms and costs ~€11/month
  • assets.adobedtm.com adds 590ms and costs ~€10/month
  • Google Tag Manager adds 427ms and costs ~€7/month
  • cdn-ukwest.onetrust.com adds 412ms and costs ~€7/month
  • analytics.tiktok.com adds 400ms and costs ~€7/month
  • Google Tag Manager adds 391ms and costs ~€7/month
  • securepubads.g.doubleclick.net adds 336ms and costs ~€6/month
  • Google Tag Manager adds 304ms and costs ~€5/month
  • Google Tag Manager adds 285ms and costs ~€5/month
  • securepubads.g.doubleclick.net adds 214ms and costs ~€4/month

62% 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

sdk.mvp.fan takes 8530ms 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

62% of sdk.mvp.fan'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

Unattributable takes 4292ms 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 2956ms 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

static.chartbeat.com takes 649ms 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

assets.adobedtm.com takes 590ms 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 427ms 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-ukwest.onetrust.com takes 412ms 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

53% of cdn-ukwest.onetrust.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

analytics.tiktok.com takes 400ms 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 analytics.tiktok.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

Google Tag Manager takes 391ms 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

securepubads.g.doubleclick.net takes 336ms 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 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 304ms 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 285ms 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

securepubads.g.doubleclick.net takes 214ms 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 imasdk.googleapis.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

91% of sdk.mvp.fan'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

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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