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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
5
REVIEW
1
PASS
8
INFO
2

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

Mobile Desktop
11
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
98
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.

3.17 s

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

16.94 s

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

3.19 s

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

0.849

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

5.98 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.

21.71 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
16
8 PASS 1 REVIEW 5 FIX
F
Page Weight Budget
Action
2.9 MB transferred, 131 requests
FIX
2.9 MB transferred, 131 requests
Warning::
Page weighs 11.9 MB (2.9 MB transferred)
Warning::
JavaScript is 2.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.0 MB
Info::
Fonts are 274 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 274 KB
Warning::
131 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.60 g CO2 per page load
2.9 MB / 2.4 MB budget
2.9 MB transferred
131 requests
0.60 g CO2 per page load
JavaScript 2.0 MiB 69%
Images 301.2 KiB 10%
Fonts 274.0 KiB 9%
Other 141.5 KiB 5%
HTML 84.0 KiB 3%
Other 60.2 KiB 2%
CSS 35.9 KiB 1%
Other 3.0 KiB 0%
Other 1.2 KiB 0%
Other 350 B 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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

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.

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
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.9 MiB of 2.9 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
10058ms total JS execution
FIX
10058ms total JS execution
Warning::
https://marketing-assets.calendly.com/_next/static...: 4139ms CPU time
Warning::
https://calendly.com/: 3060ms CPU time
Warning::
Unattributable: 985ms CPU time
Warning::
https://marketing-assets.calendly.com/_next/static...: 483ms CPU time
Warning::
https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketc...: 408ms CPU time
Warning::
Third-party scripts: 10058ms (100% of total)

Main Thread Breakdown

Script Evaluation 39% Other 22% Style & Layout 18% Script Parsing & Compilation 10% Parse HTML & CSS 6% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://marketing-assets.calendly.com/_next/static/chunks/0wcez47q7d~ix.js4139ms2890ms18ms3rd
https://calendly.com/3060ms12ms34ms3rd
Unattributable985ms76ms0ms3rd
https://marketing-assets.calendly.com/_next/static/chunks/03~y8y.mm.187.js483ms15ms454ms3rd
https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js408ms280ms126ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W3RGHP8358ms284ms54ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-725106552&cx=c&gtm=4e6460210ms161ms28ms3rd
https://marketing-assets.calendly.com/_next/static/chunks/09jveylm1qq.y.js181ms5ms162ms3rd
https://js.navattic.com/sdk.js?key=pkey_cm34kdcx100f3rs3bgnka6ct0136ms131ms2ms3rd
https://ws.zoominfo.com/pixel/62d762a3bfe14c008f0eec2d100ms80ms6ms3rd
F
JS Bundles
Action
26 scripts, 1.3 MB unused
FIX
26 scripts, 1.3 MB unused
Warning::
https://marketing-assets.calendly.com/_next/static...: 686 KB unused (92%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://marketing-assets.calendly.com/_next/static...: 249 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketc...: 157 KB unused (61%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-W3R...: 79 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-725...: 63 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.3 MB
1304 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://marketing-assets.calendly.com/_next/static/chunks/03~y8y.mm.187.js747 KB686 KB (92%)✓3rd
https://marketing-assets.calendly.com/_next/static/chunks/09jveylm1qq.y.js381 KB249 KB (65%)✓3rd
https://cdn.ketchjs.com/ketchtag/stable/v2.12/ketch-sdk.js257 KB157 KB (61%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W3RGHP8167 KB79 KB (47%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-725106552&cx=c&gtm=4e6460144 KB63 KB (44%)✓3rd
https://marketing-assets.calendly.com/_next/static/chunks/0magscpdntu-h.js26 KB25 KB (98%)✓3rd
https://marketing-assets.calendly.com/_next/static/chunks/0wcez47q7d~ix.js69 KB24 KB (35%)✓3rd
https://marketing-assets.calendly.com/_next/static/chunks/0dpzkd19qq3rb.js37 KB21 KB (57%)✓3rd
https://marketing-assets.calendly.com/_next/static/chunks/134y3i3gfugxs.js15 KB—✓3rd
https://snippet.maze.co/maze-universal-loader.js?apiKey=f7d8a032-7fe8-4549-a433-ecbaf290cbaa3 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

F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Image Optimization
Action
45 images, 0 KB saveable
REVIEW
45 images, 0 KB saveable
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/1iXaOfST... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/68QvXpmE... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/5f4urpcD... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/3YVXIhGt... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/6PFPRWMR... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/42drnxHf... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/6fo1ntHs... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/6W5mnZM4... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/2rhQcGrS... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/3x97SWL0... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/7bQs7qA7... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/3L8hrM2H... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/7xVuRmZc... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/42r0sVud... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/nirfrq5t... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://calendly.com/media/googleLogo.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/2APzJ2NN... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/263kzYvo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/Fk2s4fCN... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/6OTuIytC... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/4DaLXMiJ... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/Y595RQBD... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/4AUQ47IN... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/64o3Zzxm... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/k5u1aoWg... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://marketing-assets.calendly.com/media/logo.s... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/4UQZOyPU... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/5iPdwT12... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://images.ctfassets.net/k0lk9kiuza3o/bOnLOncE... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
45 images 273 KB
0 oversized -0 KB
27 legacy format
30 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

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
8 fonts (274 KB)
PASS
8 fonts (274 KB)
Info::
8 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

8

274 KB total

Render-blocking

0

of 8

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 3.2 s LCP 16.9 shttps://marketing-assets.calendly.com/_next/static/media/Gilroy_Bold-s.p.04bhoiwyq-juo.woffGilroy_Bold-s.p.04bhoiw... https://marketing-assets.calendly.com/_next/static/media/Gilroy_Bold-s.p.04bhoiwyq-juo.woff — 40.3 KiB — 0 ms — font-display: swaphttps://marketing-assets.calendly.com/_next/static/media/Gilroy_Bold-s.p.13gv~l_fv7sra.woff2Gilroy_Bold-s.p.13gv~l_... https://marketing-assets.calendly.com/_next/static/media/Gilroy_Bold-s.p.13gv~l_fv7sra.woff2 — 28.9 KiB — 0 ms — font-display: swaphttps://marketing-assets.calendly.com/_next/static/media/Gilroy_Medium-s.p.0qvc.euvgjqei.woff2Gilroy_Medium-s.p.0qvc.... https://marketing-assets.calendly.com/_next/static/media/Gilroy_Medium-s.p.0qvc.euvgjqei.woff2 — 29.5 KiB — 0 ms — font-display: swaphttps://marketing-assets.calendly.com/_next/static/media/Gilroy_Medium-s.p.121f28399vp96.woffGilroy_Medium-s.p.121f2... https://marketing-assets.calendly.com/_next/static/media/Gilroy_Medium-s.p.121f28399vp96.woff — 40.3 KiB — 0 ms — font-display: swaphttps://marketing-assets.calendly.com/_next/static/media/Gilroy_Regular-s.p.01odboa4cxtsh.woff2Gilroy_Regular-s.p.01od... https://marketing-assets.calendly.com/_next/static/media/Gilroy_Regular-s.p.01odboa4cxtsh.woff2 — 27.6 KiB — 0 ms — font-display: swaphttps://marketing-assets.calendly.com/_next/static/media/Gilroy_Regular-s.p.0yn2ngkxudbp~.woffGilroy_Regular-s.p.0yn2... https://marketing-assets.calendly.com/_next/static/media/Gilroy_Regular-s.p.0yn2ngkxudbp~.woff — 38.7 KiB — 0 ms — font-display: swaphttps://marketing-assets.calendly.com/_next/static/media/Gilroy_SemiBold-s.p.08m0br4jnzobt.woff2Gilroy_SemiBold-s.p.08m... https://marketing-assets.calendly.com/_next/static/media/Gilroy_SemiBold-s.p.08m0br4jnzobt.woff2 — 29.0 KiB — 0 ms — font-display: swaphttps://marketing-assets.calendly.com/_next/static/media/Gilroy_SemiBold-s.p.0~ptal6aajru3.woffGilroy_SemiBold-s.p.0~p... https://marketing-assets.calendly.com/_next/static/media/Gilroy_SemiBold-s.p.0~ptal6aajru3.woff — 39.7 KiB — 0 ms — font-display: swap
Gilroy_Bold-s.p.04bhoiw... woff swap
Size 40 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Gilroy_Bold-s.p.13gv~l_... woff2 swap
Size 29 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Gilroy_Medium-s.p.0qvc.... woff2 swap
Size 30 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Gilroy_Medium-s.p.121f2... woff swap
Size 40 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Gilroy_Regular-s.p.01od... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Gilroy_Regular-s.p.0yn2... woff swap
Size 39 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
Gilroy_SemiBold-s.p.08m... woff2 swap
Size 29 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Gilroy_SemiBold-s.p.0~p... woff swap
Size 40 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~48 KB and ~96 ms

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
30 hints, 0 missing preconnects
PASS
30 hints, 0 missing preconnects
Info::
Page uses 30 resource hint(s)

Current Resource Hints

preconnect
—
preload
+20
30
dns-prefetch
—
prefetch
—

30 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
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
131 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
100% of JavaScript execution is third-party
First-party Third-party 10058ms · 1861KB · €175/mo
marketing-assets.calendly.com
Other
Costly
Execution 4139ms
Transfer 69 KB
Unused 35%
Monthly Cost €72/mo
calendly.com
Other
Costly
Execution 3060ms
Transfer 84 KB
Monthly Cost €53/mo
Unattributable
Other
Costly
Execution 985ms
Transfer 0 KB
Monthly Cost €17/mo
marketing-assets.calendly.com
Other
Costly
Execution 483ms
Transfer 747 KB
Unused 92%
Monthly Cost €8/mo
cdn.ketchjs.com
Other
Costly
Execution 408ms
Transfer 257 KB
Unused 61%
Monthly Cost €7/mo
Google Tag Manager
Tag Manager
Costly
Execution 358ms
Transfer 167 KB
Unused 47%
Monthly Cost €6/mo
Google Tag Manager
Tag Manager
Costly
Execution 210ms
Transfer 144 KB
Unused 44%
Monthly Cost €4/mo
marketing-assets.calendly.com
Other
Optional
Execution 181ms
Transfer 381 KB
Unused 65%
Monthly Cost €3/mo
js.navattic.com
Other
Optional
Execution 136ms
Transfer 10 KB
Monthly Cost €2/mo
ws.zoominfo.com
Other
Optional
Execution 100ms
Transfer 2 KB
Monthly Cost €2/mo

These scripts may cost more than they're worth

  • marketing-assets.calendly.com adds 4139ms and costs ~€72/month
  • calendly.com adds 3060ms and costs ~€53/month
  • Unattributable adds 985ms and costs ~€17/month
  • marketing-assets.calendly.com adds 483ms and costs ~€8/month
  • cdn.ketchjs.com adds 408ms and costs ~€7/month
  • Google Tag Manager adds 358ms and costs ~€6/month
  • Google Tag Manager adds 210ms and costs ~€4/month

100% 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

marketing-assets.calendly.com takes 4139ms 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

calendly.com takes 3060ms 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 985ms 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

marketing-assets.calendly.com takes 483ms 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

92% of marketing-assets.calendly.com'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

cdn.ketchjs.com takes 408ms 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

61% of cdn.ketchjs.com'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

Google Tag Manager takes 358ms 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 210ms 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

65% of marketing-assets.calendly.com'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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