Performance
· 15 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.
996 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.54 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
52 ms
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.
1.92 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.
2.76 s
Page Load Progression
FPage Weight BudgetAction2.8 MB transferred, 101 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 BundlesAction49 scripts, 668 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.taboola.com/libtrc/bauermedia-uk-gbp/loader.js | 320 KB | 232 KB (73%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-5HKWZE1LXQ&l=bauerDataLayer&cx=c>m=4e64k1 | 170 KB | 65 KB (38%) | ✓ | 3rd |
| https://cmp.empireonline.com/Notice.8f529.js | 91 KB | 64 KB (70%) | ✓ | 3rd |
| https://browser.covatic.io/sdk/v1/bauer.js | 79 KB | 55 KB (69%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MTKR722&l=bauerDataLayer>m_auth=8HZjVPP4ghKimTy3Lbllmw>m_preview=env-1>m_cookies_win=x | 154 KB | 53 KB (34%) | ✓ | 3rd |
| https://www.google.com/cse/static/element/dc329f57de078f5d/cse_element__en.js?usqp=CAM%3D | 103 KB | 52 KB (50%) | ✓ | 3rd |
| https://cdn.permutive.app/556dcd72-7701-4fcf-99aa-1c623a3718be-web.js | 166 KB | 47 KB (29%) | ✓ | 3rd |
| https://cse.google.com/adsense/search/async-ads.js | 44 KB | 32 KB (73%) | ✓ | 3rd |
| https://www.empireonline.com/_next/static/chunks/449-589ebf9efe51ccec.js | 49 KB | 25 KB (52%) | ✓ | 3rd |
| https://cdn1.anonymised.io/light/auth.js?v=1.8.54 | 28 KB | 23 KB (86%) | ✓ | 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 InventoryAction101 resources · 2.8 MB · 668 KB savings availableFIX
~668.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 101 resources | 2.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization21 images, 0 KB saveableREVIEW
BJS Execution Cost734ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.empireonline.com/_next/static/chunks/framework-64ad27b21261a9ce.js | 149ms | 138ms | 5ms | 3rd |
| Unattributable | 128ms | 2ms | 0ms | 3rd |
| https://www.empireonline.com/ | 111ms | 23ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MTKR722&l=bauerDataLayer>m_auth=8HZjVPP4ghKimTy3Lbllmw>m_preview=env-1>m_cookies_win=x | 97ms | 86ms | 9ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-5HKWZE1LXQ&l=bauerDataLayer&cx=c>m=4e64k1 | 82ms | 72ms | 9ms | 3rd |
| https://cmp.empireonline.com/Notice.8f529.js | 57ms | 48ms | 6ms | 3rd |
| https://cdn.privacy-mgmt.com/unified/wrapperMessagingWithoutDetection.js | 55ms | 41ms | 2ms | 3rd |
| https://cdn.taboola.com/libtrc/bauermedia-uk-gbp/loader.js | 54ms | 28ms | 26ms | 3rd |
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (158 KB)PASS
Web fonts
5
158 KB total
Render-blocking
0
of 5
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 HintsNo optimization neededPASS
Network Waterfall101 requests over 2066msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.empireonline.com www.empireonline.com | Other | 149ms | 42 KB | — | $2/mo | Optional |
Unattributable Unattributable | Other | 128ms | 0 KB | — | $2/mo | Optional |
www.empireonline.com www.empireonline.com | Other | 111ms | 66 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 97ms | 154 KB | 34% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 82ms | 170 KB | 38% | $1/mo | Optional |
cmp.empireonline.com cmp.empireonline.com | Other | 57ms | 91 KB | 70% | $1/mo | Optional |
cdn.privacy-mgmt.com cdn.privacy-mgmt.com | Other | 55ms | 42 KB | — | $1/mo | Optional |
cdn.taboola.com cdn.taboola.com | Other | 54ms | 320 KB | 73% | $1/mo | Optional |
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
70% of cmp.empireonline.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
73% of cdn.taboola.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