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.
3.64 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.40 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
65 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.83 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.
8.77 s
Page Load Progression
DThird-Party ImpactAction75% third-party, 0 ms blockingFIX
DJS Execution CostAction2585ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://flippingbook.com/ | 1361ms | 25ms | 5ms | 1st |
| Unattributable | 563ms | 64ms | 0ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js | 261ms | 169ms | 58ms | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/4829-bundle.js | 133ms | 98ms | 2ms | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/6854-bundle.js | 105ms | 91ms | 14ms | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/1949-bundle.js | 89ms | 51ms | 5ms | 3rd |
| https://bat.bing.com/p/insights/s/0.8.59 | 73ms | 61ms | 7ms | 3rd |
BImage Optimization25 images, 0 KB saveableREVIEW
BJS Bundles33 scripts, 123 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.cookielaw.org/scripttemplates/202603.1.0/otBannerSdk.js | 130 KB | 69 KB (53%) | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/6854-bundle.js | 38 KB | 33 KB (88%) | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/4286-bundle.js | 22 KB | 20 KB (95%) | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/3132-bundle.js | 12 KB | — | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/5515-bundle.js | 3 KB | — | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/2810-bundle.js | 4 KB | — | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/front-page-bundle.js | 8 KB | — | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/8417-bundle.js | 6 KB | — | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/1357-bundle.js | 5 KB | — | ✓ | 3rd |
| https://d1qwl4ymp6qhug.cloudfront.net/Release/R10188/9436-bundle.js | 10 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP CachingprivateREVIEW
private
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
APage Weight Budget1.0 MB transferred, 85 requestsPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (49 KB)PASS
Web fonts
2
49 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 Hints8 hints, 0 missing preconnectsPASS
Current Resource Hints
8 resource hints configured
APage Weight Inventory85 resources · 1.0 MB · 123 KB savings availablePASS
~122.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 85 resources | 1.0 MiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall85 requests over 1631msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 563ms | 0 KB | — | €3/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 261ms | 130 KB | 53% | €1/mo | Essential |
d1qwl4ymp6qhug.cloudfront.net d1qwl4ymp6qhug.cloudfront.net | Other | 133ms | 6 KB | — | €1/mo | Optional |
d1qwl4ymp6qhug.cloudfront.net d1qwl4ymp6qhug.cloudfront.net | Other | 105ms | 38 KB | 88% | €1/mo | Optional |
d1qwl4ymp6qhug.cloudfront.net d1qwl4ymp6qhug.cloudfront.net | Other | 89ms | 18 KB | — | €0/mo | Optional |
Bing UET bat.bing.com | Advertising | 73ms | 16 KB | — | €0/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 563ms and costs ~€3/month
47% of JavaScript execution time comes from third-party scripts.
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
Unattributable takes 563ms 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 OneTrust'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
88% of d1qwl4ymp6qhug.cloudfront.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