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.
732 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.31 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
198 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.
2.31 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.
2.67 s
Page Load Progression
597 ms
1.2 s
1.8 s
2.4 s
3.0 s 3.6 s
4.2 s
4.8 sFPage Weight BudgetAction3.6 MB transferred, 137 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
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 Execution CostAction2256ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 456ms | 39ms | 0ms | 3rd |
| https://fast.wistia.com/assets/external/E-v1.js | 434ms | 329ms | 36ms | 3rd |
| https://www.zend.com/ | 424ms | 4ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PG5L5N | 391ms | 339ms | 31ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 139ms | 117ms | 4ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 118ms | 79ms | 13ms | 3rd |
| https://cdn.jsdelivr.net/npm/alpinejs@3.14.3/dist/cdn.min.js | 112ms | 91ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-06BLZRYZ39&cx=c>m=4e64h1 | 68ms | 55ms | 13ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-959965184&cx=c>m=4e64h1 | 62ms | 39ms | 10ms | 3rd |
| https://j.6sc.co/6si.min.js | 51ms | 41ms | 2ms | 3rd |
FJS BundlesAction47 scripts, 640 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://fast.wistia.com/assets/external/engines/hls_video.js@379dc59f3883ecbd8a4ec99277538cfd8c619ee8 | 159 KB | 122 KB (77%) | ✓ | 3rd |
| https://fast.wistia.com/assets/external/E-v1.js | 162 KB | 71 KB (44%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202601.2.0/otBannerSdk.js | 128 KB | 67 KB (52%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-06BLZRYZ39&cx=c>m=4e64h1 | 172 KB | 63 KB (37%) | ✓ | 3rd |
| https://assets.trendemon.com/tag/trends.min.js | 89 KB | 58 KB (65%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PG5L5N | 174 KB | 57 KB (33%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-959965184&cx=c>m=4e64h1 | 144 KB | 55 KB (38%) | ✓ | 3rd |
| https://resources.perforce.com/js/forms2/js/forms2.min.js | 67 KB | 51 KB (76%) | ✓ | 3rd |
| https://fast.wistia.com/assets/external/captions.js | 43 KB | 29 KB (66%) | ✓ | 3rd |
| https://www.zend.com/sites/default/files/js/js_WAZtGlt7eCNfPJaORXSYgeUJIHAaMCJtgbBJHWvTpH0.js?scope=footer&delta=0&language=en&theme=p4base&include=eJw9iUEOgzAMBD8UyKX_iRxiqIWJI9sI-vuCRLisZnagFBeovwgPjLNK9QAUgdLCkoFDRnfUhGcTw5Jm4kstLlhRr4ynM9U1Ft0b8PhoaJ8MhvGezhNoGWiSOlwkuyH3soGu6PKqZGIcNqx7v5qSbV0OMicI7SsudlC78osjVfJg5HhQwQSM6vH-_teJWms | 38 KB | 26 KB (68%) | ✓ | 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 InventoryAction137 resources · 3.6 MB · 640 KB savings availableFIX
~639.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 137 resources | 3.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction37 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
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 Loading3 fonts (34 KB)PASS
Web fonts
3
34 KB total
Render-blocking
0
of 3
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)
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall137 requests over 4964msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 456ms | 0 KB | — | €5/mo | Costly |
fast.wistia.com fast.wistia.com | Other | 434ms | 162 KB | 44% | €5/mo | Costly |
www.zend.com www.zend.com | Other | 424ms | 24 KB | — | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 391ms | 174 KB | 33% | €4/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 139ms | 26 KB | — | €2/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 118ms | 128 KB | 52% | €1/mo | Essential |
jsDelivr cdn.jsdelivr.net | CDN | 112ms | 17 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 68ms | 172 KB | 37% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 62ms | 144 KB | 38% | €1/mo | Optional |
j.6sc.co j.6sc.co | Other | 51ms | 19 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 456ms and costs ~€5/month
- fast.wistia.com adds 434ms and costs ~€5/month
- www.zend.com adds 424ms and costs ~€5/month
- Google Tag Manager adds 391ms 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
Unattributable takes 456ms 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
fast.wistia.com takes 434ms 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.zend.com takes 424ms 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 391ms 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
52% 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