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.
1.20 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.12 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
27 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.056
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.50 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.
4.43 s
Page Load Progression
610 ms 1.2 s 1.8 s
2.4 s 3.0 s
3.7 s
4.3 s
4.9 sFPage Weight BudgetAction3.0 MB transferred, 172 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
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 BundlesAction52 scripts, 333 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://static.hsappstatic.net/conversations-visitor-ui/static-1.28763/bundles/visitor.js | 344 KB | 149 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N5LT88 | 212 KB | 67 KB (31%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X&cx=c>m=4e64k0h2 | 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-1.9171/whisper-core-entry.js | 37 KB | 27 KB (74%) | ✓ | 3rd |
| https://static.hsappstatic.net/affiliates-landing-embed/ex/referral.js | 2 KB | — | ✓ | 3rd |
| https://www.hubspot.com/hubfs/hub_generated/module_assets/1/190737726287/1754330251072/module_Breeze_Agents_-_Multi-Column_Content.min.js | 1 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/template_assets/1/196759365909/1760630163614/template_scrollingText.min.js | 2 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
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 InventoryAction172 resources · 3.0 MB · 333 KB savings availableFIX
~332.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 172 resources | 3.0 MiB | ||||||
BImage Optimization27 images, 0 KB saveableREVIEW
CJS Execution CostAction1124ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.hubspot.com/ | 282ms | 6ms | 1ms | 3rd |
| Unattributable | 209ms | 8ms | 0ms | 3rd |
| https://js.hs-analytics.net/analytics/1776819900000/53.js | 166ms | 128ms | 3ms | 3rd |
| https://static.hsappstatic.net/conversations-visitor-ui/static-1.28763/bundles/visitor.js | 115ms | 83ms | 22ms | 3rd |
| https://ob.greencolumnart.com/i/2269cb35d68742ffa3ba89c23cfa9948.js | 103ms | 81ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N5LT88 | 101ms | 77ms | 14ms | 3rd |
| https://static.hsappstatic.net/head-dlb/static-1.4921/bundle.production.js | 94ms | 88ms | 1ms | 3rd |
| https://www.hubspot.com/wt-assets/static-files/mktg-analytics/latest/bundle.min.js | 53ms | 31ms | 1ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (1113 KB)PASS
Web fonts
7
1113 KB total
Render-blocking
0
of 7
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)
Fixing the unchecked items could save ~479 KB and ~958 ms
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
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 Waterfall172 requests over 5182msINFO
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 | 282ms | 104 KB | — | €3/mo | Costly |
Unattributable Unattributable | Other | 209ms | 0 KB | — | €2/mo | Costly |
HubSpot Analytics js.hs-analytics.net | Analytics | 166ms | 51 KB | — | €2/mo | Optional |
static.hsappstatic.net static.hsappstatic.net | Other | 115ms | 344 KB | 43% | €1/mo | Optional |
ob.greencolumnart.com ob.greencolumnart.com | Other | 103ms | 45 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 101ms | 212 KB | 31% | €1/mo | Optional |
static.hsappstatic.net static.hsappstatic.net | Other | 94ms | 20 KB | — | €1/mo | Optional |
www.hubspot.com www.hubspot.com | Other | 53ms | 8 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.hubspot.com adds 282ms and costs ~€3/month
- Unattributable adds 209ms 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 282ms 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 209ms 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