Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.72 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.96 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
3.43 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.
3.77 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.
22.31 s
Page Load Progression
DPage Weight BudgetAction2.4 MB transferred, 174 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
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.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction9641ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.ladbible.com/_next/static/chunks/1517-7fdef48b9c3f2303.js | 1773ms | 1643ms | 30ms | 3rd |
| Unattributable | 1362ms | 311ms | 0ms | 3rd |
| https://www.ladbible.com/_next/static/chunks/8606-b62fbe487961dfc5.js | 980ms | 427ms | 3ms | 3rd |
| https://www.ladbible.com/ | 690ms | 60ms | 50ms | 3rd |
| https://micro.rubiconproject.com/prebid/dynamic/13128.js | 592ms | 490ms | 85ms | 3rd |
| https://fundingchoicesmessages.google.com/i/106213651?ers=3 | 459ms | 352ms | 29ms | 3rd |
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 356ms | 265ms | 80ms | 3rd |
| https://config.aps.amazon-adsystem.com/configs/3920 | 255ms | 238ms | 6ms | 3rd |
| https://silo66.p7cloud.net/as1.js?uri=https%3A%2F%2Fwww.ladbible.com | 248ms | 184ms | 59ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=G-XXXXXXXXXX&cx=c>m=4e64k1 | 244ms | 191ms | 52ms | 3rd |
Showing top 10 of 31 scripts
FJS BundlesAction66 scripts, 680 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js | 188 KB | 132 KB (70%) | ✓ | 3rd |
| https://micro.rubiconproject.com/prebid/dynamic/13128.js | 182 KB | 97 KB (54%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=G-XXXXXXXXXX&cx=c>m=4e64k1 | 137 KB | 73 KB (53%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/lidar.js?fcd=true | 83 KB | 65 KB (78%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-ZSZ528CV9S | 153 KB | 59 KB (39%) | ✓ | 3rd |
| https://c.amazon-adsystem.com/aax2/apstag.js | 91 KB | 52 KB (57%) | ✓ | 3rd |
| https://www.ladbible.com/_next/static/chunks/bd904a5c-2526fc6ceb6112fc.js | 57 KB | 45 KB (78%) | ✓ | 3rd |
| https://fundingchoicesmessages.google.com/i/106213651?ers=3 | 70 KB | 37 KB (54%) | ✓ | 3rd |
| https://cdn.id5-sync.com/api/1.0/id5-api.js | 34 KB | 31 KB (91%) | ✓ | 3rd |
| https://www.ladbible.com/_next/static/chunks/b536a0f1-d45603aa3caf459b.js | 80 KB | 23 KB (29%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction174 resources · 2.4 MB · 680 KB savings availableFIX
~680.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 174 resources | 2.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization35 images, 0 KB saveableREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (32 KB)PASS
Web fonts
2
32 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints7 hints, 0 missing preconnectsPASS
Current Resource Hints
7 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall174 requests over 5190msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.ladbible.com www.ladbible.com | Other | 1773ms | 45 KB | 49% | €28/mo | Costly |
Unattributable Unattributable | Other | 1362ms | 0 KB | — | €22/mo | Costly |
www.ladbible.com www.ladbible.com | Other | 980ms | 9 KB | — | €16/mo | Costly |
www.ladbible.com www.ladbible.com | Other | 690ms | 62 KB | — | €11/mo | Costly |
micro.rubiconproject.com micro.rubiconproject.com | Other | 592ms | 182 KB | 54% | €9/mo | Costly |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 459ms | 70 KB | 54% | €7/mo | Costly |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 356ms | 188 KB | 70% | €6/mo | Costly |
config.aps.amazon-adsystem.com config.aps.amazon-adsystem.com | Other | 255ms | 2 KB | — | €4/mo | Costly |
silo66.p7cloud.net silo66.p7cloud.net | Other | 248ms | 89 KB | — | €4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 244ms | 137 KB | 53% | €4/mo | Costly |
consent.ladbible.com consent.ladbible.com | Other | 201ms | 42 KB | 51% | €3/mo | Costly |
sdk.mrf.io sdk.mrf.io | Other | 198ms | 42 KB | — | €3/mo | Optional |
www.ladbible.com www.ladbible.com | Other | 196ms | 80 KB | 29% | €3/mo | Optional |
cdn.id5-sync.com cdn.id5-sync.com | Other | 191ms | 34 KB | 91% | €3/mo | Optional |
c.amazon-adsystem.com c.amazon-adsystem.com | Other | 188ms | 91 KB | 57% | €3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 170ms | 153 KB | 39% | €3/mo | Optional |
ats.rlcdn.com ats.rlcdn.com | Other | 166ms | 37 KB | — | €3/mo | Optional |
www.ladbible.com www.ladbible.com | Other | 147ms | 3 KB | — | €2/mo | Optional |
securepubads.g.doubleclick.net securepubads.g.doubleclick.net | Other | 131ms | 34 KB | — | €2/mo | Optional |
api.receptivity.io api.receptivity.io | Other | 128ms | 9 KB | — | €2/mo | Optional |
static.chartbeat.com static.chartbeat.com | Other | 119ms | 25 KB | — | €2/mo | Optional |
metrics.rapidedge.io metrics.rapidedge.io | Other | 112ms | 31 KB | — | €2/mo | Optional |
www.ladbible.com www.ladbible.com | Other | 110ms | 52 KB | — | €2/mo | Optional |
cdn1.anonymised.io cdn1.anonymised.io | Other | 105ms | 26 KB | — | €2/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 102ms | 83 KB | 78% | €2/mo | Optional |
consent.ladbible.com consent.ladbible.com | Other | 81ms | 29 KB | — | €1/mo | Optional |
consent.ladbible.com consent.ladbible.com | Other | 77ms | 40 KB | — | €1/mo | Optional |
tags.crwdcntrl.net tags.crwdcntrl.net | Other | 75ms | 14 KB | — | €1/mo | Optional |
cdn.edkt.io cdn.edkt.io | Other | 66ms | 7 KB | — | €1/mo | Optional |
cp.ladbible.com cp.ladbible.com | Other | 63ms | 35 KB | — | €1/mo | Optional |
static.anonymised.io static.anonymised.io | Other | 55ms | 6 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.ladbible.com adds 1773ms and costs ~€28/month
- Unattributable adds 1362ms and costs ~€22/month
- www.ladbible.com adds 980ms and costs ~€16/month
- www.ladbible.com adds 690ms and costs ~€11/month
- micro.rubiconproject.com adds 592ms and costs ~€9/month
- fundingchoicesmessages.google.com adds 459ms and costs ~€7/month
- securepubads.g.doubleclick.net adds 356ms and costs ~€6/month
- config.aps.amazon-adsystem.com adds 255ms and costs ~€4/month
- silo66.p7cloud.net adds 248ms and costs ~€4/month
- Google Tag Manager adds 244ms and costs ~€4/month
- consent.ladbible.com adds 201ms and costs ~€3/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
www.ladbible.com takes 1773ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 1362ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.ladbible.com takes 980ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.ladbible.com takes 690ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
micro.rubiconproject.com takes 592ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
54% of micro.rubiconproject.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
fundingchoicesmessages.google.com takes 459ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
54% of fundingchoicesmessages.google.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
securepubads.g.doubleclick.net takes 356ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
70% of securepubads.g.doubleclick.net's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
config.aps.amazon-adsystem.com takes 255ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
silo66.p7cloud.net takes 248ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 244ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
53% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
consent.ladbible.com takes 201ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
51% of consent.ladbible.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
91% of cdn.id5-sync.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
57% of c.amazon-adsystem.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
78% of pagead2.googlesyndication.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev