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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
2
PASS
6
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
34
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

3.33 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

8.17 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

2.84 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

6.61 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.

22.11 s

Page Load Progression

522 ms
1.0 s
1.6 s
2.1 s
2.6 s
3.1 s
3.7 s
4.2 s
Checks
14
6 PASS 2 REVIEW 4 FIX
D
Page Weight Budget
Action
2.6 MB transferred, 229 requests
FIX
2.6 MB transferred, 229 requests
Warning::
Page weighs 8.3 MB (2.6 MB transferred)
Warning::
JavaScript is 1.9 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.9 MB
Warning::
229 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.54 g CO2 per page load
2.6 MB / 2.4 MB budget
2.6 MB transferred
229 requests
0.54 g CO2 per page load
JavaScript 1.9 MiB 72%
Images 327.4 KiB 12%
HTML 139.7 KiB 5%
Fonts 129.4 KiB 5%
CSS 63.3 KiB 2%
Other 35.5 KiB 1%
Other 13.2 KiB 1%
Other 6.8 KiB 0%
Other 5.2 KiB 0%
Other 5.1 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

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.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
74% third-party, 0 ms blocking
FIX
74% third-party, 0 ms blocking
Warning::
Third-party code accounts for 74% of page weight (1.9 MiB of 2.6 MiB)
Info::
Third-party blocking time is low (0 ms)
26%
74%
First-party Third-party
F
JS Execution Cost
Action
9538ms total JS execution
FIX
9538ms total JS execution
Warning::
https://www.hubspot.com/: 1322ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-N5L...: 1164ms CPU time
Warning::
Unattributable: 1139ms CPU time
Warning::
https://js.hs-analytics.net/analytics/177532320000...: 843ms CPU time
Warning::
https://static.hsappstatic.net/conversations-visit...: 649ms CPU time
Warning::
Third-party scripts: 7686ms (81% of total)

Main Thread Breakdown

Script Evaluation 56% Other 16% Style & Layout 15% Script Parsing & Compilation 9%
ScriptTotalScriptingParse/CompileParty
https://www.hubspot.com/1322ms68ms8ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-N5LT881164ms991ms106ms3rd
Unattributable1139ms120ms0ms3rd
https://js.hs-analytics.net/analytics/1775323200000/53.js843ms571ms20ms3rd
https://static.hsappstatic.net/conversations-visitor-ui/static-1.28445/bundles/visitor.js649ms486ms135ms3rd
https://www.googletagmanager.com/gtag/js?id=G-LXTM6CQ0XK&cx=c&gtm=4e6411612ms458ms63ms3rd
https://tags.pw.adn.cloud/V9WA75/activation.js383ms348ms20ms3rd
https://static.hsappstatic.net/head-dlb/static-1.4841/bundle.production.js368ms339ms7ms3rd
https://www.googletagmanager.com/gtag/js?id=G-X&cx=c&gtm=4e6411304ms252ms46ms3rd
https://www.googletagmanager.com/gtag/destination?id=DC-11620487&cx=c&gtm=4e6411303ms255ms46ms3rd

Showing top 10 of 29 scripts

D
JS Bundles
Action
71 scripts, 493 KB unused
FIX
71 scripts, 493 KB unused
Warning::
https://static.hsappstatic.net/conversations-visit...: 159 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-LXTM...: 69 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-X&cx...: 60 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/destination?...: 58 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-N5L...: 54 KB unused (26%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 493 KB
493 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://static.hsappstatic.net/conversations-visitor-ui/static-1.28445/bundles/visitor.js341 KB159 KB (47%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-LXTM6CQ0XK&cx=c&gtm=4e6411172 KB69 KB (40%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-X&cx=c&gtm=4e6411135 KB60 KB (44%)✓3rd
https://www.googletagmanager.com/gtag/destination?id=DC-11620487&cx=c&gtm=4e6411130 KB58 KB (45%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-N5LT88209 KB54 KB (26%)✓3rd
https://cdn.intellimize.co/snippet/117964275.js117 KB40 KB (34%)✓3rd
https://tags.pw.adn.cloud/V9WA75/activation.js43 KB27 KB (63%)✓3rd
https://static.hsappstatic.net/whisper-core/static-1.8755/whisper-core-entry.js36 KB26 KB (74%)✓3rd
https://www.hubspot.com/hs/scriptloader/53.js?businessUnitId=01 KB—✓1st
https://js.usemessages.com/conversations-embed.js33 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

B
Image Optimization
34 images, 0 KB saveable
REVIEW
34 images, 0 KB saveable
Info::
All images are well-optimized
34 images 327 KB
0 oversized -0 KB
24 legacy format
0 missing dimensions CLS risk
B
HTTP Caching
s-maxage=0,max-age=0
REVIEW
s-maxage=0,max-age=0
Info::
Cache-Control header is set
Got: s-maxage=0,max-age=0
Info::
Last-Modified header present
Cache-Control

s-maxage=0,max-age=0

DirectiveValueMeaning
s-maxage0CDN caches for 0 seconds
max-age0Cache for 0 seconds
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
5 fonts (129 KB)
PASS
5 fonts (129 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

129 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 3.3 s LCP 8.2 shttps://static2cdn.hubspot.com/hubspot.com/static-1.4200/_hsg-ss/build/icons/hsg-icons.woff2hsg-icons.woff2 https://static2cdn.hubspot.com/hubspot.com/static-1.4200/_hsg-ss/build/icons/hsg-icons.woff2 — 13.2 KiB — 0 ms — font-display: swaphttps://www.hubspot.com/hubfs/assets/hs-components/v4/fonts/hubspot-2025/HubSpotSans-Medium.woff2HubSpotSans-Medium.woff2 https://www.hubspot.com/hubfs/assets/hs-components/v4/fonts/hubspot-2025/HubSpotSans-Medium.woff2 — 27.5 KiB — 0 ms — font-display: swaphttps://www.hubspot.com/hubfs/assets/hs-components/v4/fonts/hubspot-2025/HubSpotSans-Book.woff2HubSpotSans-Book.woff2 https://www.hubspot.com/hubfs/assets/hs-components/v4/fonts/hubspot-2025/HubSpotSans-Book.woff2 — 26.0 KiB — 0 ms — font-display: swaphttps://www.hubspot.com/hubfs/assets/hs-components/v4/fonts/hubspot-2025/HubSpotSerif-Book.woff2HubSpotSerif-Book.woff2 https://www.hubspot.com/hubfs/assets/hs-components/v4/fonts/hubspot-2025/HubSpotSerif-Book.woff2 — 31.2 KiB — 0 ms — font-display: swaphttps://www.hubspot.com/hubfs/assets/hs-components/v4/fonts/hubspot-2025/HubSpotSerif-Medium.woff2HubSpotSerif-Medium.woff2 https://www.hubspot.com/hubfs/assets/hs-components/v4/fonts/hubspot-2025/HubSpotSerif-Medium.woff2 — 31.5 KiB — 0 ms — font-display: swap
hsg-icons.woff2 woff2 swap
Size 13 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
HubSpotSans-Medium.woff2 woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
HubSpotSans-Book.woff2 woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
HubSpotSerif-Book.woff2 woff2 swap
Size 31 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
HubSpotSerif-Medium.woff2 woff2 swap
Size 32 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
13 hints, 0 missing preconnects
PASS
13 hints, 0 missing preconnects
Info::
Page uses 13 resource hint(s)

Current Resource Hints

preconnect
3
preload
1
dns-prefetch
9
prefetch
—

13 resource hints configured

A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
229 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
81% of JavaScript execution is third-party
First-party Third-party 7686ms · 1541KB · €41/mo
Google Tag Manager
Tag Manager
Costly
Execution 1164ms
Transfer 209 KB
Unused 26%
Monthly Cost €6/mo
Unattributable
Other
Costly
Execution 1139ms
Transfer 0 KB
Monthly Cost €6/mo
HubSpot Analytics
Analytics
Costly
Execution 843ms
Transfer 50 KB
Monthly Cost €4/mo
static.hsappstatic.net
Other
Costly
Execution 649ms
Transfer 341 KB
Unused 47%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Costly
Execution 612ms
Transfer 172 KB
Unused 40%
Monthly Cost €3/mo
tags.pw.adn.cloud
Other
Costly
Execution 383ms
Transfer 43 KB
Unused 63%
Monthly Cost €2/mo
static.hsappstatic.net
Other
Costly
Execution 368ms
Transfer 20 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 304ms
Transfer 135 KB
Unused 44%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Costly
Execution 303ms
Transfer 130 KB
Unused 45%
Monthly Cost €2/mo
cdn.intellimize.co
Other
Costly
Execution 256ms
Transfer 117 KB
Unused 34%
Monthly Cost €1/mo
js.hubspot.com
Other
Optional
Execution 177ms
Transfer 17 KB
Monthly Cost €1/mo
js.hs-banner.com
Other
Optional
Execution 165ms
Transfer 141 KB
Monthly Cost €1/mo
static.hsappstatic.net
Other
Optional
Execution 146ms
Transfer 1 KB
Monthly Cost €1/mo
app.hubspot.com
Other
Optional
Execution 139ms
Transfer 18 KB
Monthly Cost €1/mo
53.fs1.hubspotusercontent-na1.net
Other
Optional
Execution 133ms
Transfer 0 KB
Monthly Cost €1/mo
53.fs1.hubspotusercontent-na1.net
Other
Optional
Execution 128ms
Transfer 0 KB
Monthly Cost €1/mo
js.usemessages.com
Other
Optional
Execution 126ms
Transfer 33 KB
Monthly Cost €1/mo
d.impactradius-event.com
Other
Optional
Execution 125ms
Transfer 21 KB
Monthly Cost €1/mo
53.fs1.hubspotusercontent-na1.net
Other
Optional
Execution 121ms
Transfer 0 KB
Monthly Cost €1/mo
LinkedIn Insight
Advertising
Optional
Execution 92ms
Transfer 19 KB
Monthly Cost €0/mo
js.hubspot.com
Other
Optional
Execution 84ms
Transfer 28 KB
Monthly Cost €0/mo
53.fs1.hubspotusercontent-na1.net
Other
Optional
Execution 67ms
Transfer 0 KB
Monthly Cost €0/mo
app.hubspot.com
Other
Optional
Execution 61ms
Transfer 6 KB
Monthly Cost €0/mo
dx.mountain.com
Other
Optional
Execution 52ms
Transfer 5 KB
Monthly Cost €0/mo
static.hsappstatic.net
Other
Optional
Execution 50ms
Transfer 36 KB
Unused 74%
Monthly Cost €0/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 1164ms and costs ~€6/month
  • Unattributable adds 1139ms and costs ~€6/month
  • HubSpot Analytics adds 843ms and costs ~€4/month
  • static.hsappstatic.net adds 649ms and costs ~€3/month
  • Google Tag Manager adds 612ms and costs ~€3/month
  • tags.pw.adn.cloud adds 383ms and costs ~€2/month
  • static.hsappstatic.net adds 368ms and costs ~€2/month
  • Google Tag Manager adds 304ms and costs ~€2/month
  • Google Tag Manager adds 303ms and costs ~€2/month
  • cdn.intellimize.co adds 256ms and costs ~€1/month

81% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

Google Tag Manager takes 1164ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 1139ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

HubSpot Analytics takes 843ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

static.hsappstatic.net takes 649ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 612ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

tags.pw.adn.cloud takes 383ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

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.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

static.hsappstatic.net takes 368ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 304ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 303ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

cdn.intellimize.co takes 256ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

74% of static.hsappstatic.net's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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