Performance

· 25 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

Performance

100

Accessibility

100

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.

1.11 s

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

3.81 s

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

1.08 s

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

0.053

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

2.62 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.

3.82 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

20 PASS 1 REVIEW 2 FIX

JS Execution Cost

Action

2126ms total JS execution

FIX

2126ms total JS execution

Unattributable: 1179ms CPU time

https://seedaud.io/: 585ms CPU time

https://seedaud.io/_next/static/chunks/1255-d3883c...: 362ms CPU time

Main Thread Breakdown

Other 56% Script Evaluation 20% Style & Layout 16% Script Parsing & Compilation 3%

Script	Total	Scripting	Parse/Compile	Party
Unattributable	1179ms	10ms	0ms	1st
https://seedaud.io/	585ms	24ms	17ms	1st
https://seedaud.io/_next/static/chunks/1255-d3883c8c37639c14.js	362ms	344ms	11ms	1st

HTTP Caching

Action

no-store (uncacheable)

FIX

no-store (uncacheable)

Cache-Control: no-store prevents all caching

Intentional for dynamic content, but increases server load for every page view.

Got: private, no-cache, no-store, max-age=0, must-revalidate

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

private, no-cache, no-store, max-age=0, must-revalidate

Directive	Value	Meaning
private	—	Only browser cache, not CDN/proxy
no-cache	—	Cache but always revalidate first
no-store	—	Never cache this response
max-age	0	Cache for 0 seconds
must-revalidate	—	Must recheck with server after expiry

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.

A+

Page Weight Budget

444 KB transferred, 29 requests

PASS

444 KB transferred, 29 requests

Page weighs 1.3 MB (444 KB transferred)

29 HTTP requests

Estimated 0.09 g CO2 per page load

444 KB transferred

29 requests

0.09 g CO2 per page load

JavaScript 241.9 KiB 55%

Images 108.5 KiB 24%

HTML 41.5 KiB 9%

CSS 25.4 KiB 6%

Other 23.9 KiB 5%

Other 1.7 KiB 0%

Other 938 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

5 images, 0 KB saveable

PASS

5 images, 0 KB saveable

All images are well-optimized

5 images 108 KB

0 oversized -0 KB

0 legacy format

0 missing dimensions CLS risk

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+

JS Bundles

17 scripts, 0 KB unused

PASS

17 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://seedaud.io/_next/static/chunks/webpack-465502ff01416a5c.js	3 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/4bd1b696-100b9d70ed4e49c1.js	55 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/1255-d3883c8c37639c14.js	46 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/main-app-d3db650e94392b97.js	1 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/6091-a55273ae15dc9db7.js	13 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/4707-3852af688f7a6ffd.js	6 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/1910-e3c2af0a9d7004a4.js	6 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/6199-0eedc70699454325.js	3 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/6477-e05f06137785847e.js	3 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/5889-ffb931142bdcda70.js	9 KB	—	✓	1st

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

2 hints, 0 missing preconnects

PASS

2 hints, 0 missing preconnects

Page uses 2 resource hint(s)

Current Resource Hints

preconnect

—

preload

dns-prefetch

—

prefetch

—

2 resource hints configured

A+

HTTP/3 (QUIC)

HTTP/3 advertised via Alt-Svc

PASS

HTTP/3 advertised via Alt-Svc

HTTP/3 (QUIC) is supported

First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.

A+

Compression Algorithm

Main response uses brotli

PASS

Main response uses brotli

Main HTML response uses brotli (Content-Encoding: br)

Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.

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-store -- correct for sensitive/dynamic content

PASS

Main HTML uses no-store -- correct for sensitive/dynamic content

Got: private, no-cache, no-store, max-age=0, must-revalidate

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch

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).

No `ETag` or `Last-Modified` -- conditional GET not supported

Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.

A+

Page Weight Inventory

29 resources · 444 KB · 0 KB savings available

PASS

29 resources · 444 KB · 0 KB savings available

Within 1MB page-weight target

Got: 444 KB

29 resources · 443.6 KiB · 0 third-party Within 1MB page-weight target

JavaScript 55% · 241.9 KiB

Image 30% · 132.0 KiB

Document 9% · 41.5 KiB

CSS 6% · 25.4 KiB

Other 1% · 3.0 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

29 resources			443.6 KiB

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

JavaScript Blocking

1 JS blocking issue(s) detected

PASS

1 JS blocking issue(s) detected

1 render-blocking <script src> tag(s) without async/defer

Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.

A+

CSS Performance Depth

No CSS performance depth issues detected

PASS

No CSS performance depth issues 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

29 requests over 1428ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Image Optimization

41 images, 46 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

46 KB

4 missing dimensions 1 missing lazy loading

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