https://celebrai-ai-event.hatchable.site/?utm_source=chatgpt.com&_hbpvclear=1

Performance

· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

100

Performance

100

Accessibility

Best Practices

100

SEO

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

328 ms

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

328 ms

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

0 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.

497 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.

328 ms

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

13 PASS 6 REVIEW

JS Bundles

6 scripts, 0 KB unused

REVIEW

6 scripts, 0 KB unused

https://celebrai-ai-event.hatchable.site/__hatchab...: unminified — 3 KB could be saved

https://celebrai-ai-event.hatchable.site/core.js?v...: unminified — 3 KB could be saved

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://celebrai-ai-event.hatchable.site/__hatchable/config.js?v=23	7 KB	—	✗	1st
https://celebrai-ai-event.hatchable.site/__hatchable/badge.js?v=23&b=1	1 KB	—	✓	1st
https://celebrai-ai-event.hatchable.site/data.js?v=8e39ee326641	7 KB	—	✓	1st
https://celebrai-ai-event.hatchable.site/core.js?v=7052569668bf	11 KB	—	✗	1st
https://celebrai-ai-event.hatchable.site/strings.js?v=6b42d0824d95	5 KB	—	✓	1st
https://celebrai-ai-event.hatchable.site/app.js?v=6d158c36f125	6 KB	—	✓	1st

HTTP/3 (QUIC)

HTTP/3 not advertised

REVIEW

HTTP/3 not advertised

HTTP/3 (QUIC) is not advertised

HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.

Document Compression

Document response uses gzip; brotli would be ~20% smaller

REVIEW

Document response uses gzip; brotli would be ~20% smaller

Main HTML response uses gzip (brotli would be ~20% smaller)

All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.

Server-Timing Observability

No Server-Timing header found

REVIEW

No Server-Timing header found

Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

HTTP Caching

no-cache, private

REVIEW

no-cache, private

Cache-Control header is set

Got: no-cache, private

ETag present — enables conditional (304) responses

Cache-Control

no-cache, private

Directive	Value	Meaning
no-cache	—	Cache but always revalidate first
private	—	Only browser cache, not CDN/proxy

A+

Page Weight Budget

47 KB transferred, 10 requests

PASS

47 KB transferred, 10 requests

Page weighs 131 KB (47 KB transferred)

10 HTTP requests

Estimated 0.01 g CO2 per page load

47 KB transferred

10 requests

0.01 g CO2 per page load

JavaScript 37.4 KiB 79%

HTML 5.7 KiB 12%

CSS 3.9 KiB 8%

Other 508 B 1%

Images 0 B 0%

0 2.4 MB 4.9 MB

Under budget

A+

Third-Party Impact

No third-party resources

PASS

No third-party resources

No third-party resources detected

No third-party resources detected — all resources are first-party.

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Image Optimization

1 images, 0 KB saveable

PASS

1 images, 0 KB saveable

All images are well-optimized

1 images 0 KB

0 oversized -0 KB

0 legacy format

0 missing dimensions CLS risk

A+

JS Execution Cost

No JS execution data

PASS

No JS execution data

No significant JS execution detected

Main Thread Breakdown

Style & Layout 39% Other 38% Script Evaluation 12% Script Parsing & Compilation 4% Parse HTML & CSS 4% Rendering 3%

A+

Font Loading

No web fonts (system fonts)

PASS

No web fonts (system fonts)

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

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

No optimization needed

PASS

No optimization needed

No resource hint issues

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Main HTML Cache-Control

Main HTML uses no-cache -- safe revalidate-on-request policy

PASS

Main HTML uses no-cache -- safe revalidate-on-request policy

Got: no-cache, private

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: Accept-Encoding

The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).

`ETag` present -- conditional GET supported

A+

Page Weight Inventory

10 resources · 47 KB · 0 KB savings available

PASS

10 resources · 47 KB · 0 KB savings available

Within 1MB page-weight target

Got: 47 KB

1 third-party resources (0% of weight)

10 resources · 47.5 KiB · 1 third-party Within 1MB page-weight target

JavaScript 79% · 37.4 KiB

Document 12% · 5.7 KiB

CSS 8% · 3.9 KiB

Other 1% · 508 B

Image 0% · 0 B

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

10 resources			47.5 KiB

Asset Compression

No text asset hosts to measure

INFO

No text asset hosts to measure

No third-party or subdomain host served enough text assets to measure

Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.

Network Waterfall

10 requests over 755ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

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