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.
3.66 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.12 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
906 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.008
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.32 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.
14.00 s
Page Load Progression
561 ms 1.1 s 1.7 s 2.2 s 2.8 s
3.4 s
3.9 s
4.5 sFPage Weight BudgetAction13.6 MB transferred, 168 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 Execution CostAction4552ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1001ms | 34ms | 0ms | 3rd |
| https://js.hs-analytics.net/analytics/1776819900000/53.js | 818ms | 589ms | 15ms | 3rd |
| https://www.hubspot.com/home-b | 706ms | 21ms | 4ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N5LT88 | 532ms | 442ms | 59ms | 3rd |
| https://ob.greencolumnart.com/i/2269cb35d68742ffa3ba89c23cfa9948.js | 365ms | 297ms | 12ms | 3rd |
| https://www.hubspot.com/wt-assets/static-files/mktg-analytics/latest/bundle.min.js | 185ms | 131ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X&cx=c>m=4e64h1 | 172ms | 143ms | 28ms | 3rd |
| https://tags.pw.adn.cloud/V9WA75/activation.js | 153ms | 128ms | 18ms | 3rd |
| https://js.hs-banner.com/v2/53/banner.js | 129ms | 47ms | 64ms | 3rd |
| https://js.hubspot.com/ut-js/hubspot-dot-com.js | 126ms | 70ms | 4ms | 3rd |
Showing top 10 of 15 scripts
DPage Weight InventoryAction168 resources · 13.6 MB · 155 KB savings availableFIX
~155.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 168 resources | 13.6 MiB | ||||||
BImage Optimization24 images, 0 KB saveableREVIEW
CJS BundlesAction44 scripts, 155 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtm.js?id=GTM-N5LT88 | 213 KB | 65 KB (31%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X&cx=c>m=4e64h1 | 137 KB | 63 KB (46%) | ✓ | 3rd |
| https://tags.pw.adn.cloud/V9WA75/activation.js | 44 KB | 27 KB (63%) | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/module_assets/1/80992206983/1776092570522/module_logoCarousel.min.js | 7 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hs/hsstatic/HubspotToolsMenu/static-1.640/js/index.js | 5 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/template_assets/1/207928094068/1776130430885/template_nav-shared.min.js | 1 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/template_assets/1/207928094060/1776130427701/template_footer.min.js | 2 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/module_assets/1/194032616504/1776095722370/module_WTM_-_WF_-_Page_Header_-_Human.min.js | 1 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/module_assets/1/210962225218/1776708238545/module_WTM_-_Feature_Showcase.min.js | 3 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/template_assets/1/180019264802/1762952720600/template_check-animated-svg.min.js | 1 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (129 KB)PASS
Web fonts
5
129 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 Hints10 hints, 0 missing preconnectsPASS
Current Resource Hints
10 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
A+HTTP Cachingmax-age=120 (2 minutes)PASS
s-maxage=3600,max-age=120
| Directive | Value | Meaning |
|---|---|---|
| s-maxage | 3600 | CDN caches for 1 hour |
| max-age | 120 | Cache for 2 minutes |
Network Waterfall168 requests over 7568msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 1001ms | 0 KB | — | €11/mo | Costly |
HubSpot Analytics js.hs-analytics.net | Analytics | 818ms | 51 KB | — | €9/mo | Costly |
www.hubspot.com www.hubspot.com | Other | 706ms | 104 KB | — | €8/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 532ms | 213 KB | 31% | €6/mo | Costly |
ob.greencolumnart.com ob.greencolumnart.com | Other | 365ms | 45 KB | — | €4/mo | Costly |
www.hubspot.com www.hubspot.com | Other | 185ms | 8 KB | — | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 172ms | 137 KB | 46% | €2/mo | Optional |
tags.pw.adn.cloud tags.pw.adn.cloud | Other | 153ms | 44 KB | 63% | €2/mo | Optional |
js.hs-banner.com js.hs-banner.com | Other | 129ms | 141 KB | — | €1/mo | Optional |
js.hubspot.com js.hubspot.com | Other | 126ms | 17 KB | — | €1/mo | Optional |
obs.greencolumnart.com obs.greencolumnart.com | Other | 116ms | 2 KB | — | €1/mo | Optional |
53.fs1.hubspotusercontent-na1.net 53.fs1.hubspotusercontent-na1.net | Other | 70ms | 0 KB | — | €1/mo | Optional |
www.hubspot.com www.hubspot.com | Other | 67ms | 11 KB | — | €1/mo | Optional |
53.fs1.hubspotusercontent-na1.net 53.fs1.hubspotusercontent-na1.net | Other | 58ms | 0 KB | — | €1/mo | Optional |
js.usemessages.com js.usemessages.com | Other | 56ms | 33 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 1001ms and costs ~€11/month
- HubSpot Analytics adds 818ms and costs ~€9/month
- www.hubspot.com adds 706ms and costs ~€8/month
- Google Tag Manager adds 532ms and costs ~€6/month
- ob.greencolumnart.com adds 365ms 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 1001ms 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
HubSpot Analytics takes 818ms 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.hubspot.com takes 706ms 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 532ms 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
ob.greencolumnart.com takes 365ms 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
63% of tags.pw.adn.cloud'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