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https://www.databricks.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
3
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
58
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.

512 ms

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

2.21 s

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

579 ms

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

0.043

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

3.11 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.

4.23 s

Page Load Progression

1.1 s
2.2 s
3.4 s
4.5 s
5.6 s
6.7 s
7.8 s
9.0 s
Checks
14
7 PASS 2 REVIEW 3 FIX
F
Page Weight Budget
Action
5.4 MB transferred, 118 requests
FIX
5.4 MB transferred, 118 requests
Critical::
Page weighs 13.6 MB (5.4 MB transferred)
Warning::
Images are 1.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.9 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::
118 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
5.4 MB / 2.4 MB budget
5.4 MB transferred
118 requests
1.1 g CO2 per page load
Images 1.9 MiB 35%
Other 1.7 MiB 31%
JavaScript 1.5 MiB 28%
HTML 124.3 KiB 2%
Fonts 108.0 KiB 2%
Other 49.7 KiB 1%
Other 21.1 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
21184ms total JS execution
FIX
21184ms total JS execution
Warning::
https://www.databricks.com/: 6765ms CPU time
Warning::
https://www.databricks.com/en-website-assets/09e28...: 6181ms CPU time
Warning::
https://www.databricks.com/en-website-assets/320c7...: 5958ms CPU time
Warning::
https://www.databricks.com/en-website-assets/app-c...: 1208ms CPU time
Warning::
Unattributable: 625ms CPU time
Info::
Third-party scripts: 974ms (5% of total)

Main Thread Breakdown

Other 35% Script Evaluation 26% Rendering 19% Style & Layout 17%
ScriptTotalScriptingParse/CompileParty
https://www.databricks.com/6765ms96ms7ms1st
https://www.databricks.com/en-website-assets/09e28184553ed2519de7ca45fec366af00a90c0e-7d6196f37f3aa0eaabde.js6181ms351ms26ms1st
https://www.databricks.com/en-website-assets/320c792b-f0a06de50e1fcff148e6.js5958ms3523ms9ms1st
https://www.databricks.com/en-website-assets/app-c4450c99660bffa0d15a.js1208ms998ms8ms1st
Unattributable625ms14ms0ms3rd
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516140ms89ms1ms3rd
https://www.databricks.com/en-website-assets/0434d2dad8b0064360a78ff53f1fc2cc8b836245-df7e889fda39182d27c2.js99ms81ms12ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-TWTKQQ83ms68ms14ms3rd
https://www.googletagmanager.com/gtag/js?id=AW-369195016&cx=c&gtm=4e646066ms54ms11ms3rd
https://js-agent.newrelic.com/nr-spa-1.290.0.min.js59ms51ms3ms3rd
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-105...: 64 KB unused (49%)
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.
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-10510347&cx=c&gtm=4e6460130 KB64 KB (49%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-15572922&cx=c&gtm=4e6460129 KB64 KB (50%)✓3rd
https://www.databricks.com/en-website-assets/c8f7fe3b0e41be846d5687592cf2018ff6e22687-7ad1797c312a9bb0cb5d.js61 KB46 KB (76%)✓1st
https://dev.visualwebsiteoptimizer.com/cdn/7.0/va-b03330a3ea5efc60ce22670d4eb2c598br.js72 KB46 KB (63%)✓3rd
https://www.databricks.com/en-website-assets/320c792b-f0a06de50e1fcff148e6.js76 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
47 images, 0 KB saveable
REVIEW
47 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::
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.
47 images 1.9 MB
0 oversized -0 KB
46 legacy format
12 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

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 (751.1 KiB of 5.4 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 500 ms 1.0 s 1.5 s 2.0 s FCP 512 ms LCP 2.2 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 — 23.2 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 — 23.2 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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
118 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 974ms · 370KB · $3/mo
Unattributable
Other
Costly
Execution 625ms
Transfer 0 KB
Monthly Cost $2/mo
static.cloudflareinsights.com
Other
Optional
Execution 140ms
Transfer 11 KB
Monthly Cost $0/mo
Google Tag Manager
Tag Manager
Optional
Execution 83ms
Transfer 181 KB
Unused 45%
Monthly Cost $0/mo
Google Tag Manager
Tag Manager
Optional
Execution 66ms
Transfer 145 KB
Unused 45%
Monthly Cost $0/mo
js-agent.newrelic.com
Other
Optional
Execution 59ms
Transfer 33 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • Unattributable adds 625ms and costs ~$2/month

Unattributable takes 625ms 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

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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