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.
1.06 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.84 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
8 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.079
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.65 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.
2.12 s
Page Load Progression
FPage Weight BudgetAction4.3 MB transferred, 73 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
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.
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.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction17 scripts, 338 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://player.admiralcloud.com/acplayer.js | 379 KB | 160 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WN9297K | 139 KB | 85 KB (61%) | ✓ | 3rd |
| https://cdn.continental.com/typo3temp/assets/compressed/merged-ab3e2c348a9d120cc02ea2ebd73d11a5-e6caf4e3dc08a0206b567e4865621664.js?1771406502 | 82 KB | 54 KB (68%) | ✓ | 3rd |
| https://cdn.consentmanager.net/delivery/js/cmp_final.min.js?t=2026-4-22 | 101 KB | 39 KB (38%) | ✓ | 3rd |
| https://cdn.consentmanager.net/delivery/customdata/bV8xLndfNDI2MTkucl9HRFBSLmxfZW4uZF8zNjgwNC54XzE1Ni52LnAudF8zNjgwNC54dF84OA.js | 12 KB | — | ✓ | 3rd |
| https://d.delivery.consentmanager.net/delivery/cmp.php?&cdid=f893648c4ce4&h=https%3A%2F%2Fwww.continental.com%2Fen%2F&&l=en&ls=EN_EN_EN&lp=EN_EN&o=1776898076453 | 1 KB | — | ✓ | 3rd |
| https://d.delivery.consentmanager.net/delivery/cmp.php?__cmpcc=1&id=42619&o=1776898076&h=https%3A%2F%2Fwww.continental.com%2Fen%2F&&l=en&odw=0&dlt=1&l=en&lp=EN_EN | 1 KB | — | ✓ | 3rd |
| https://d.delivery.consentmanager.net/delivery/cmp.php?__cmpcc=2&__cmpfcc=1&id=42619&o=1776898076&h=https%3A%2F%2Fwww.continental.com%2Fen%2F&&l=en&odw=0&dlt=1&l=en&lp=EN_EN | 3 KB | — | ✓ | 3rd |
| https://www.continental.com/_assets/1ea205344a72e174bb6103d4cfe6e63c/JavaScript/ipRedirectBanner.min.js?1771406424 | 4 KB | — | ✓ | 3rd |
| https://charts3.equitystory.com/widget/loader.js | 22 KB | — | ✓ | 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
DPage Weight InventoryAction73 resources · 4.3 MB · 338 KB savings availableFIX
~338.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 73 resources | 4.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization20 images, 0 KB saveableREVIEW
BJS Execution Cost881ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.continental.com/en/ | 413ms | 38ms | 1ms | 3rd |
| https://player.admiralcloud.com/acplayer.js | 328ms | 188ms | 28ms | 3rd |
| Unattributable | 141ms | 2ms | 0ms | 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 Loading9 fonts (447 KB)PASS
Web fonts
9
447 KB total
Render-blocking
0
of 9
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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 ~1 KB and ~2 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall73 requests over 2239msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.continental.com www.continental.com | Other | 413ms | 33 KB | — | €4/mo | Costly |
player.admiralcloud.com player.admiralcloud.com | Other | 328ms | 379 KB | 42% | €4/mo | Costly |
Unattributable Unattributable | Other | 141ms | 0 KB | — | €2/mo | Optional |
These scripts may cost more than they're worth
- www.continental.com adds 413ms and costs ~€4/month
- player.admiralcloud.com adds 328ms and costs ~€4/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.continental.com takes 413ms 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
player.admiralcloud.com takes 328ms 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