Performance

· 22 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

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.

532 ms

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

3.66 s

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.

646 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.

3.75 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

13 PASS 4 REVIEW 2 FIX

Page Weight Budget

Action

4.6 MB transferred, 38 requests

FIX

4.6 MB transferred, 38 requests

Page weighs 5.6 MB (4.6 MB transferred)

Images are 4.1 MB — compress or use modern formats

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

Got: 4.1 MB

38 HTTP requests

Estimated 0.96 g CO2 per page load

4.6 MB transferred

38 requests

0.96 g CO2 per page load

Images 4.1 MiB 91%

JavaScript 319.9 KiB 7%

HTML 50.4 KiB 1%

CSS 29.7 KiB 1%

Other 10.5 KiB 0%

Other 6.1 KiB 0%

Other 869 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

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

Image Optimization

6 images, 0 KB saveable

REVIEW

6 images, 0 KB saveable

All images are well-optimized

6 images 4.1 MB

0 oversized -0 KB

6 legacy format

0 missing dimensions CLS risk

JS Bundles

17 scripts, 72 KB unused

REVIEW

17 scripts, 72 KB unused

https://accounts.google.com/gsi/client: 72 KB unused (75%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 72 KB

72 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://accounts.google.com/gsi/client	97 KB	72 KB (75%)	✓	3rd
https://seedaud.io/_next/static/chunks/4924-dc64fd92a9d76251.js	4 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/4207-0b1db2edbf6010fb.js	7 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/main-app-d7ecdd8ea1b11d21.js	1 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/6091-6bdfcd8c31001171.js	13 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/4707-840002ee52637aa6.js	6 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/1356-e0431919f9b272a7.js	6 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/1255-32f0b2a4c4d3a714.js	46 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/6199-69bf43d3f1b562f8.js	3 KB	—	✓	1st
https://seedaud.io/_next/static/chunks/5889-3802aac086dc2541.js	9 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

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.

Page Weight Inventory

Action

38 resources · 4.6 MB · 72 KB savings available

REVIEW

38 resources · 4.6 MB · 72 KB savings available

Page weight 4.6 MB exceeds 1 MB target by 3.6 MB

Got: 4.6 MB Expected: ≤ 1 MB

~72 KB of savings available

2 third-party resources (2% of weight)

4 resources over 200KB

38 resources · 4.6 MiB · 2 third-party 3.6 MiB over 1MB target

Image 91% · 4.2 MiB

JavaScript 7% · 319.9 KiB

Document 1% · 50.4 KiB

CSS 1% · 29.7 KiB

Other 0% · 8.5 KiB

~72.3 KiB of savings available

Remove unused JavaScript: 72.3 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

38 resources			4.6 MiB

A+

Third-Party Impact

2% third-party, 0 ms blocking

PASS

2% third-party, 0 ms blocking

Third-party code accounts for 2% of page weight (97.3 KiB of 4.6 MiB)

Third-party blocking time is low (0 ms)

98%

First-party Third-party

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

JS Execution Cost

480ms total JS execution

PASS

480ms total JS execution

https://seedaud.io/: 206ms CPU time

Unattributable: 145ms CPU time

https://seedaud.io/_next/static/chunks/1255-32f0b2...: 129ms CPU time

Main Thread Breakdown

Script Evaluation 34% Other 34% Style & Layout 21% Script Parsing & Compilation 6%

Script	Total	Scripting	Parse/Compile	Party
https://seedaud.io/	206ms	7ms	9ms	1st
Unattributable	145ms	5ms	0ms	1st
https://seedaud.io/_next/static/chunks/1255-32f0b2a4c4d3a714.js	129ms	122ms	3ms	1st

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+

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+

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

38 requests over 1368ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Real-User Performance (CrUX)

Field metrics from the Chrome User Experience Report

INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-06-12 — 2026-07-09)

LCP (p75)

2447 ms

77% good

INP (p75)

96 ms

84% good

CLS (p75)

0.000

99% good

FCP (p75)

2322 ms

TTFB (p75)

1603 ms

This origin passes Core Web Vitals assessment

Image Optimization

41 images, 1101 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

1101 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.

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Performance

Page Load Progression

Green Hosting

Chrome User Experience (CrUX)

Image Optimization Audit