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.
1.15 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.15 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
62 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.048
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.17 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.
4.44 s
Page Load Progression
673 ms 1.3 s 2.0 s 2.7 s
3.4 s 4.0 s
4.7 s
5.4 sFPage Weight BudgetAction9.1 MB transferred, 183 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=4e64k0 | 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-1.9180/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/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
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 InventoryAction183 resources · 9.1 MB · 333 KB savings availableFIX
~332.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 183 resources | 9.1 MiB | ||||||
BImage Optimization24 images, 0 KB saveableREVIEW
CJS Execution CostAction1372ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.hubspot.com/home-b | 306ms | 7ms | 1ms | 3rd |
| Unattributable | 259ms | 11ms | 0ms | 3rd |
| https://static.hsappstatic.net/head-dlb/static-1.4921/bundle.production.js | 188ms | 180ms | 2ms | 3rd |
| https://js.hs-analytics.net/analytics/1776894000000/53.js | 184ms | 148ms | 4ms | 3rd |
| https://static.hsappstatic.net/conversations-visitor-ui/static-1.28763/bundles/visitor.js | 131ms | 96ms | 25ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-N5LT88 | 110ms | 94ms | 14ms | 3rd |
| https://ob.greencolumnart.com/i/2269cb35d68742ffa3ba89c23cfa9948.js | 86ms | 66ms | 3ms | 3rd |
| https://www.hubspot.com/wt-assets/static-files/mktg-analytics/latest/bundle.min.js | 59ms | 39ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-X&cx=c>m=4e64k0 | 52ms | 42ms | 9ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (1115 KB)PASS
Web fonts
7
1115 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
AHTTP Cachingmax-age=120 (2 minutes)PASS
no-transform, max-age=120
| Directive | Value | Meaning |
|---|---|---|
| no-transform | — | |
| max-age | 120 | Cache for 2 minutes |
Network Waterfall183 requests over 7057msINFO
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 | 306ms | 104 KB | — | €3/mo | Costly |
Unattributable Unattributable | Other | 259ms | 0 KB | — | €3/mo | Costly |
static.hsappstatic.net static.hsappstatic.net | Other | 188ms | 20 KB | — | €2/mo | Optional |
HubSpot Analytics js.hs-analytics.net | Analytics | 184ms | 51 KB | — | €2/mo | Optional |
static.hsappstatic.net static.hsappstatic.net | Other | 131ms | 344 KB | 43% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 110ms | 212 KB | 31% | €1/mo | Optional |
ob.greencolumnart.com ob.greencolumnart.com | Other | 86ms | 45 KB | — | €1/mo | Optional |
www.hubspot.com www.hubspot.com | Other | 59ms | 9 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 52ms | 137 KB | 46% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.hubspot.com adds 306ms and costs ~€3/month
- Unattributable adds 259ms 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.hubspot.com takes 306ms 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 259ms 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