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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
3
REVIEW
2
PASS
9
INFO
2

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

Mobile Desktop
30
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
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.

26.14 s

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

3.57 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.

10.27 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.

27.95 s

Page Load Progression

1.1 s
2.2 s
3.3 s
4.4 s
5.5 s
6.6 s
7.7 s
8.8 s
Checks
16
9 PASS 2 REVIEW 3 FIX
F
Page Weight Budget
Action
5.2 MB transferred, 111 requests
FIX
5.2 MB transferred, 111 requests
Critical::
Page weighs 13.3 MB (5.2 MB transferred)
Warning::
Images are 1.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.7 MB
Warning::
JavaScript is 1.5 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.5 MB
Warning::
111 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.1 g CO2 per page load
5.2 MB / 2.4 MB budget
5.2 MB transferred
111 requests
1.1 g CO2 per page load
Images 1.7 MiB 32%
Other 1.7 MiB 32%
JavaScript 1.5 MiB 30%
HTML 124.2 KiB 2%
Fonts 107.9 KiB 2%
Other 51.3 KiB 1%
Other 21.2 KiB 0%
Other 1.0 KiB 0%
CSS 494 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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

F
JS Execution Cost
Action
73240ms total JS execution
FIX
73240ms total JS execution
Warning::
https://www.databricks.com/en-website-assets/320c7...: 43213ms CPU time
Warning::
https://www.databricks.com/: 20455ms CPU time
Warning::
https://www.databricks.com/en-website-assets/app-c...: 4438ms CPU time
Warning::
Unattributable: 2313ms CPU time
Warning::
https://www.databricks.com/en-website-assets/09e28...: 1044ms CPU time
Info::
Third-party scripts: 3663ms (5% of total)

Main Thread Breakdown

Other 37% Script Evaluation 27% Rendering 18% Style & Layout 16%
ScriptTotalScriptingParse/CompileParty
https://www.databricks.com/en-website-assets/320c792b-f0a06de50e1fcff148e6.js43213ms13520ms36ms1st
https://www.databricks.com/20455ms294ms26ms1st
https://www.databricks.com/en-website-assets/app-c4450c99660bffa0d15a.js4438ms3571ms28ms1st
Unattributable2313ms45ms0ms3rd
https://www.databricks.com/en-website-assets/09e28184553ed2519de7ca45fec366af00a90c0e-7d6196f37f3aa0eaabde.js1044ms836ms99ms1st
https://www.databricks.com/en-website-assets/c8f7fe3b0e41be846d5687592cf2018ff6e22687-7ad1797c312a9bb0cb5d.js371ms25ms19ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-TWTKQQ335ms234ms52ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-369195016&cx=c&gtm=4e6460255ms211ms42ms3rd
https://www.googletagmanager.com/gtag/js?id=DC-10510347&cx=c&gtm=4e6460236ms133ms33ms3rd
https://js-agent.newrelic.com/nr-spa-1.290.0.min.js219ms176ms13ms3rd

Showing top 10 of 13 scripts

F
JS Bundles
Action
29 scripts, 777 KB unused
FIX
29 scripts, 777 KB unused
Warning::
https://www.databricks.com/en-website-assets/09e28...: 245 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-TWT...: 82 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-369...: 65 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=DC-155...: 64 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=DC-105...: 63 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 777 KB
777 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.databricks.com/en-website-assets/09e28184553ed2519de7ca45fec366af00a90c0e-7d6196f37f3aa0eaabde.js301 KB245 KB (82%)✓1st
https://www.googletagmanager.com/gtm.js?id=GTM-TWTKQQ181 KB82 KB (45%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-369195016&cx=c&gtm=4e6460145 KB65 KB (45%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-15572922&cx=c&gtm=4e6460129 KB64 KB (50%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-10510347&cx=c&gtm=4e6460130 KB63 KB (49%)✓3rd
https://www.databricks.com/en-website-assets/c8f7fe3b0e41be846d5687592cf2018ff6e22687-7ad1797c312a9bb0cb5d.js61 KB46 KB (76%)✓1st
https://dev.visualwebsiteoptimizer.com/cdn/web/djIkdGU6Ny4wOmFzeW5jJWpxdWVyeQ==/tag-b4b25398f77a667c2eec7cdbdd89aabcbr.js72 KB46 KB (63%)✓3rd
https://www.databricks.com/en-website-assets/320c792b-f0a06de50e1fcff148e6.js77 KB41 KB (54%)✓1st
https://www.databricks.com/en-website-assets/2760db51e6f8366a4f18618ca34f89087d05b949-51bc69a0ef9aa4447f22.js45 KB35 KB (77%)✓1st
https://www.databricks.com/en-website-assets/74cfde4e-bf7a8735c413b1734424.js39 KB34 KB (87%)✓1st

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

C
Image Optimization
Action
38 images, 0 KB saveable
REVIEW
38 images, 0 KB saveable
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... 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://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.databricks.com/sites/default/files/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
38 images 1.7 MB
0 oversized -0 KB
36 legacy format
14 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

B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
Last-Modified header present
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Third-Party Impact
14% third-party, 0 ms blocking
PASS
14% third-party, 0 ms blocking
Info::
Third-party code accounts for 14% of page weight (751.5 KiB of 5.2 MiB)
Info::
Third-party blocking time is low (0 ms)
86%
First-party Third-party
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
6 fonts (108 KB)
PASS
6 fonts (108 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

108 KB total

Render-blocking

0

of 6

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 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s FCP 3.3 s LCP 26.1 shttps://www.databricks.com/en-website-assets/static/sans_400.woff2sans_400.woff2 https://www.databricks.com/en-website-assets/static/sans_400.woff2 — 22.6 KiB — 0 ms — font-display: swaphttps://www.databricks.com/en-website-assets/static/sans_500.woff2sans_500.woff2 https://www.databricks.com/en-website-assets/static/sans_500.woff2 — 23.1 KiB — 0 ms — font-display: swaphttps://www.databricks.com/en-website-assets/static/sans_700.woff2sans_700.woff2 https://www.databricks.com/en-website-assets/static/sans_700.woff2 — 23.1 KiB — 0 ms — font-display: swaphttps://www.databricks.com/en-website-assets/static/mono_400.woff2mono_400.woff2 https://www.databricks.com/en-website-assets/static/mono_400.woff2 — 14.3 KiB — 0 ms — font-display: swaphttps://www.databricks.com/en-website-assets/static/sans_600.woff2sans_600.woff2 https://www.databricks.com/en-website-assets/static/sans_600.woff2 — 23.6 KiB — 0 ms — font-display: swapdata:font/ttf;base64,AAEAAAALAIAAAwAwT1MvMg8SBbUAAAC8AAAAYGNtYXAXVtKIAAABHAAAAFRnYXNwAAAAEAAAAXAAAA…ttf;base64,AAEAAAALAIAA... data:font/ttf;base64,AAEAAAALAIAAAwAwT1MvMg8SBbUAAAC8AAAAYGNtYXAXVtKIAAABHAAAAFRnYXNwAAAAEAAAAXAAAA… — 1.1 KiB — 0 ms — font-display: swap
sans_400.woff2 woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
sans_500.woff2 woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
sans_700.woff2 woff2 swap
Size 23 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
mono_400.woff2 woff2 swap
Size 14 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
sans_600.woff2 woff2 swap
Size 24 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
ttf;base64,AAEAAAALAIAA... unknown swap
Size 1 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
12 hints, 0 missing preconnects
PASS
12 hints, 0 missing preconnects
Info::
Page uses 12 resource hint(s)

Current Resource Hints

preconnect
7
preload
4
dns-prefetch
1
prefetch
—

12 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
111 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
5% of JavaScript execution is third-party
First-party Third-party 3663ms · 691KB · $12/mo
Unattributable
Other
Costly
Execution 2313ms
Transfer 0 KB
Monthly Cost $7/mo
Google Tag Manager
Tag Manager
Costly
Execution 335ms
Transfer 181 KB
Unused 45%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Costly
Execution 255ms
Transfer 145 KB
Unused 45%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Costly
Execution 236ms
Transfer 130 KB
Unused 49%
Monthly Cost $1/mo
js-agent.newrelic.com
Other
Costly
Execution 219ms
Transfer 33 KB
Monthly Cost $1/mo
dev.visualwebsiteoptimizer.com
Other
Optional
Execution 157ms
Transfer 72 KB
Unused 63%
Monthly Cost $0/mo
Google Tag Manager
Tag Manager
Optional
Execution 148ms
Transfer 129 KB
Unused 50%
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • Unattributable adds 2313ms and costs ~$7/month
  • Google Tag Manager adds 335ms and costs ~$1/month
  • Google Tag Manager adds 255ms and costs ~$1/month
  • Google Tag Manager adds 236ms and costs ~$1/month
  • js-agent.newrelic.com adds 219ms and costs ~$1/month

Unattributable takes 2313ms 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 335ms 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 255ms 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 236ms 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

js-agent.newrelic.com takes 219ms 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 dev.visualwebsiteoptimizer.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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