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.
3.50 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.66 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.44 s
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.
6.34 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.
18.05 s
Page Load Progression
493 ms
987 ms 1.5 s 2.0 s
2.5 s
3.0 s
3.5 s
3.9 sDThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5958ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.hubspot.com/ | 886ms | 29ms | 5ms | 3rd |
| https://js.hs-analytics.net/analytics/1776359700000/53.js | 833ms | 650ms | 13ms | 3rd |
| Unattributable | 813ms | 36ms | 0ms | 3rd |
| https://static.hsappstatic.net/conversations-visitor-ui/static-1.28580/bundles/visitor.js | 501ms | 388ms | 92ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N5LT88 | 446ms | 364ms | 60ms | 3rd |
| https://ob.greencolumnart.com/i/2269cb35d68742ffa3ba89c23cfa9948.js | 440ms | 362ms | 9ms | 3rd |
| https://static.hsappstatic.net/head-dlb/static-1.4884/bundle.production.js | 266ms | 241ms | 5ms | 3rd |
| https://www.hubspot.com/wt-assets/static-files/mktg-analytics/latest/bundle.min.js | 218ms | 156ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X&cx=c>m=4e64f0 | 197ms | 154ms | 41ms | 3rd |
| https://tags.pw.adn.cloud/V9WA75/activation.js | 182ms | 128ms | 21ms | 3rd |
Showing top 10 of 23 scripts
DJS BundlesAction53 scripts, 342 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://static.hsappstatic.net/conversations-visitor-ui/static-1.28580/bundles/visitor.js | 342 KB | 159 KB (47%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N5LT88 | 212 KB | 66 KB (31%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X&cx=c>m=4e64f0 | 137 KB | 63 KB (46%) | ✓ | 3rd |
| https://tags.pw.adn.cloud/V9WA75/activation.js | 44 KB | 27 KB (63%) | ✓ | 3rd |
| https://static.hsappstatic.net/whisper-core/static-1.9098/whisper-core-entry.js | 37 KB | 27 KB (74%) | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/template_assets/1/184970967646/1775052615730/template_fixed-elements.load.min.js | 4 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/template_assets/1/201647315568/1772616056360/template_cl-carousel.mount.min.js | 7 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hs/hsstatic/cos-i18n/static-1.53/bundles/project.js | 2 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/template_assets/1/206749040455/1775052649814/template_cl-icon.mount.min.js | 7 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/template_assets/1/207928094069/1776130426655/template_header.min.js | 11 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
DPage Weight InventoryAction165 resources · 2.0 MB · 342 KB savings availableFIX
~342.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 165 resources | 2.0 MiB | ||||||
CPage Weight BudgetAction2.0 MB transferred, 165 requestsREVIEW
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
BImage Optimization21 images, 0 KB saveableREVIEW
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (130 KB)PASS
Web fonts
5
130 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
AHTTP Cachingmax-age=3600 (1 hour)PASS
max-age=3600
| Directive | Value | Meaning |
|---|---|---|
| max-age | 3600 | Cache for 1 hour |
Network Waterfall165 requests over 5310msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.hubspot.com www.hubspot.com | Other | 886ms | 105 KB | — | €10/mo | Costly |
HubSpot Analytics js.hs-analytics.net | Analytics | 833ms | 51 KB | — | €9/mo | Costly |
Unattributable Unattributable | Other | 813ms | 0 KB | — | €9/mo | Costly |
static.hsappstatic.net static.hsappstatic.net | Other | 501ms | 342 KB | 47% | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 446ms | 212 KB | 31% | €5/mo | Costly |
ob.greencolumnart.com ob.greencolumnart.com | Other | 440ms | 45 KB | — | €5/mo | Costly |
static.hsappstatic.net static.hsappstatic.net | Other | 266ms | 20 KB | — | €3/mo | Costly |
www.hubspot.com www.hubspot.com | Other | 218ms | 8 KB | — | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 197ms | 137 KB | 46% | €2/mo | Optional |
tags.pw.adn.cloud tags.pw.adn.cloud | Other | 182ms | 44 KB | 63% | €2/mo | Optional |
js.hubspot.com js.hubspot.com | Other | 165ms | 16 KB | — | €2/mo | Optional |
js.hs-banner.com js.hs-banner.com | Other | 131ms | 141 KB | — | €1/mo | Optional |
app.hubspot.com app.hubspot.com | Other | 126ms | 18 KB | — | €1/mo | Optional |
www.hubspot.com www.hubspot.com | Other | 109ms | 11 KB | — | €1/mo | Optional |
obs.greencolumnart.com obs.greencolumnart.com | Other | 102ms | 2 KB | — | €1/mo | Optional |
static.hsappstatic.net static.hsappstatic.net | Other | 99ms | 1 KB | — | €1/mo | Optional |
js.usemessages.com js.usemessages.com | Other | 82ms | 33 KB | — | €1/mo | Optional |
53.fs1.hubspotusercontent-na1.net 53.fs1.hubspotusercontent-na1.net | Other | 68ms | 0 KB | — | €1/mo | Optional |
js.hubspot.com js.hubspot.com | Other | 66ms | 28 KB | — | €1/mo | Optional |
53.fs1.hubspotusercontent-na1.net 53.fs1.hubspotusercontent-na1.net | Other | 66ms | 0 KB | — | €1/mo | Optional |
53.fs1.hubspotusercontent-na1.net 53.fs1.hubspotusercontent-na1.net | Other | 60ms | 0 KB | — | €1/mo | Optional |
53.fs1.hubspotusercontent-na1.net 53.fs1.hubspotusercontent-na1.net | Other | 52ms | 0 KB | — | €1/mo | Optional |
app.hubspot.com app.hubspot.com | Other | 51ms | 6 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.hubspot.com adds 886ms and costs ~€10/month
- HubSpot Analytics adds 833ms and costs ~€9/month
- Unattributable adds 813ms and costs ~€9/month
- static.hsappstatic.net adds 501ms and costs ~€5/month
- Google Tag Manager adds 446ms and costs ~€5/month
- ob.greencolumnart.com adds 440ms and costs ~€5/month
- static.hsappstatic.net adds 266ms and costs ~€3/month
- www.hubspot.com adds 218ms and costs ~€2/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.hubspot.com takes 886ms 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 833ms 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
Unattributable takes 813ms 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
static.hsappstatic.net 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
Google Tag Manager takes 446ms 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 440ms 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
static.hsappstatic.net takes 266ms 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 218ms 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