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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
0
REVIEW
5
PASS
7
INFO
2

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

Mobile Desktop
95
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.
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.

450 ms

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

1.08 s

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

154 ms

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.

657 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.57 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
14
7 PASS 5 REVIEW
B
Page Weight Budget
1.2 MB transferred, 92 requests
REVIEW
1.2 MB transferred, 92 requests
Info::
Page weighs 2.4 MB (1.2 MB transferred)
Info::
92 HTTP requests
Info::
Estimated 0.24 g CO2 per page load
1.2 MB / 2.4 MB budget
1.2 MB transferred
92 requests
0.24 g CO2 per page load
JavaScript 458.3 KiB 39%
Other 352.5 KiB 30%
Images 319.3 KiB 27%
CSS 35.7 KiB 3%
HTML 14.2 KiB 1%
Other 879 B 0%
Other 546 B 0%
Other 445 B 0%
0 2.4 MB 4.9 MB
Under budget
B
Image Optimization
23 images, 0 KB saveable
REVIEW
23 images, 0 KB saveable
Warning::
https://docusaurus.io/img/meta_opensource_logo_neg... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
23 images 319 KB
0 oversized -0 KB
19 legacy format
1 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

C
JS Execution Cost
Action
1030ms total JS execution
REVIEW
1030ms total JS execution
Warning::
https://docusaurus.io/assets/js/main.59adb867.js: 482ms CPU time
Warning::
https://docusaurus.io/: 256ms CPU time
Info::
Unattributable: 174ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-E5CR...: 119ms CPU time
Info::
Third-party scripts: 292ms (28% of total)

Main Thread Breakdown

Script Evaluation 49% Other 23% Style & Layout 14% Script Parsing & Compilation 7% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://docusaurus.io/assets/js/main.59adb867.js482ms383ms56ms1st
https://docusaurus.io/256ms14ms1ms1st
Unattributable174ms2ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-E5CR2Q1NRE119ms106ms12ms3rd
B
JS Bundles
57 scripts, 113 KB unused
REVIEW
57 scripts, 113 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-E5CR...: 65 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://docusaurus.io/assets/js/main.59adb867.js: 48 KB unused (20%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 113 KB
113 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-E5CR2Q1NRE154 KB65 KB (42%)✓3rd
https://docusaurus.io/assets/js/main.59adb867.js238 KB48 KB (20%)✓1st
https://docusaurus.io/assets/js/runtime~main.6a7a07bc.js35 KB—✓1st
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 KB—✓3rd
https://api.github.com/repos/facebook/docusaurus?callback=callback3 KB—✓3rd
https://docusaurus.io/assets/js/81457.e8822172.js3 KB—✓1st
https://docusaurus.io/assets/js/1df93b7f.dd3ca37b.js14 KB—✓1st
https://docusaurus.io/assets/js/a7456010.ec36ca5f.js1 KB—✓1st
https://docusaurus.io/assets/js/5e95c892.426b9abd.js1 KB—✓1st
https://docusaurus.io/assets/js/aba21aa0.638474d1.js1 KB—✓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

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::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
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
37% third-party, 0 ms blocking
PASS
37% third-party, 0 ms blocking
Info::
Third-party code accounts for 37% of page weight (435.4 KiB of 1.2 MiB)
Info::
Third-party blocking time is low (0 ms)
63%
37%
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
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
92 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
28% of JavaScript execution is third-party
First-party Third-party 292ms · 154KB · $4/mo
Unattributable
Other
Optional
Execution 174ms
Transfer 0 KB
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 119ms
Transfer 154 KB
Unused 42%
Monthly Cost $2/mo

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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