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.
1.11 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.14 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
6 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.005
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.87 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.
4.00 s
Page Load Progression
FPage Weight BudgetAction3.4 MB transferred, 101 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
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
DJS BundlesAction24 scripts, 489 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://next.ulule.com/_next/static/chunks/9972-b75984b8e81da98a.js | 146 KB | 102 KB (70%) | ✓ | 3rd |
| https://static.axept.io/sdk.js | 183 KB | 74 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PX3JCRM | 167 KB | 70 KB (42%) | ✓ | 3rd |
| https://next.ulule.com/_next/static/chunks/framework-654480df7d3d7253.js | 114 KB | 66 KB (58%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 78 KB | 55 KB (70%) | ✓ | 3rd |
| https://next.ulule.com/_next/static/chunks/pages/_app-130ea874fddd6dba.js | 108 KB | 53 KB (49%) | ✓ | 3rd |
| https://next.ulule.com/_next/static/chunks/main-39455c380c2a3e3c.js | 90 KB | 38 KB (43%) | ✓ | 3rd |
| https://next.ulule.com/_next/static/chunks/pages/ulule/pages/%5Bcountry%5D-8b1d772e13dbb51b.js | 44 KB | 31 KB (69%) | ✓ | 3rd |
| https://next.ulule.com/_next/static/chunks/9068-80046355b344ffa1.js | 10 KB | — | ✓ | 3rd |
| https://widget.trustpilot.com/trustboxes/5419b732fbfb950b10de65e5/main.js | 27 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
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 · 3.4 MB · 489 KB savings availableFIX
~489.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 101 resources | 3.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction36 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CJS Execution CostAction1322ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.ulule.com/ | 501ms | 7ms | 1ms | 3rd |
| https://next.ulule.com/_next/static/chunks/framework-654480df7d3d7253.js | 286ms | 223ms | 7ms | 3rd |
| https://next.ulule.com/_next/static/chunks/main-39455c380c2a3e3c.js | 191ms | 71ms | 7ms | 3rd |
| Unattributable | 108ms | 6ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PX3JCRM | 92ms | 73ms | 11ms | 3rd |
| https://widget.trustpilot.com/bootstrap/v5/tp.widget.bootstrap.min.js | 78ms | 77ms | 1ms | 3rd |
| https://static.axept.io/sdk.js | 65ms | 50ms | 14ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (236 KB)PASS
Web fonts
5
236 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
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall101 requests over 3597msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.ulule.com www.ulule.com | Other | 501ms | 36 KB | — | €5/mo | Costly |
next.ulule.com next.ulule.com | Other | 286ms | 114 KB | 58% | €3/mo | Costly |
next.ulule.com next.ulule.com | Other | 191ms | 90 KB | 43% | €2/mo | Optional |
Unattributable Unattributable | Other | 108ms | 0 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 92ms | 167 KB | 42% | €1/mo | Optional |
widget.trustpilot.com widget.trustpilot.com | Other | 78ms | 8 KB | — | €1/mo | Optional |
static.axept.io static.axept.io | Other | 65ms | 183 KB | 41% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.ulule.com adds 501ms and costs ~€5/month
- next.ulule.com adds 286ms 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.ulule.com takes 501ms 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
next.ulule.com takes 286ms 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
58% of next.ulule.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