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

Performance

Accessibility

Best Practices

SEO

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

716 ms

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

716 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.

0.020

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

716 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.

716 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 5 REVIEW 1 FIX

Third-Party Impact

Action

70% third-party, 0 ms blocking

FIX

70% third-party, 0 ms blocking

Third-party code accounts for 70% of page weight (32.4 KiB of 46.6 KiB)

Third-party blocking time is low (0 ms)

30%

70%

First-party Third-party

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.

Main HTML Cache-Control

Main HTML max-age=600 (~10min)

REVIEW

Main HTML max-age=600 (~10min)

Main HTML cached for 10 minutes -- mild staleness risk

Got: max-age=600

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

A+

Page Weight Budget

47 KB transferred, 4 requests

PASS

47 KB transferred, 4 requests

Page weighs 75 KB (47 KB transferred)

4 HTTP requests

Estimated 0.01 g CO2 per page load

47 KB transferred

4 requests

0.01 g CO2 per page load

Fonts 31.5 KiB 68%

HTML 9.0 KiB 19%

Other 5.2 KiB 11%

CSS 921 B 2%

0 2.4 MB 4.9 MB

Under budget

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Image Optimization

No images on this page

PASS

No images on this page

0 images 0 KB

0 oversized -0 KB

0 legacy format

0 missing dimensions CLS risk

A+

JS Execution Cost

280ms total JS execution

PASS

280ms total JS execution

https://feeziai72172.github.io/new/: 280ms CPU time

Main Thread Breakdown

Other 35% Style & Layout 33% Rendering 30%

Script	Total	Scripting	Parse/Compile	Party
https://feeziai72172.github.io/new/	280ms	2ms	1ms	1st

A+

Font Loading

1 fonts (32 KB)

PASS

1 fonts (32 KB)

1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

32 KB total

Render-blocking

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

QGYvz_MVcBeNP4NJtEtqUYL... woff2 swap

Size 32 KB

Load time 25 ms

Start 146 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+

JS Bundles

No JavaScript

PASS

No JavaScript

No JavaScript bundles

No JavaScript files loaded.

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+

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).

Both `ETag` and `Last-Modified` present -- efficient revalidation supported

The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).

Page Weight Inventory

4 resources · 47 KB · 0 KB savings available

PASS

4 resources · 47 KB · 0 KB savings available

Within 1MB page-weight target

Got: 47 KB

2 third-party resources (70% of weight)

4 resources · 46.6 KiB · 2 third-party Within 1MB page-weight target

Font 68% · 31.5 KiB

Document 30% · 14.2 KiB

CSS 2% · 921 B

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

4 resources			46.6 KiB

A+

HTTP Caching

max-age=600 (10 minutes)

PASS

max-age=600 (10 minutes)

Cache-Control header is set

Got: max-age=600

Effective TTL: 10 minutes (max-age=600)

ETag present — enables conditional (304) responses

Last-Modified header present

Cache-Control

max-age=600

Directive	Value	Meaning
max-age	600	Cache for 10 minutes

Effective TTL: 600 seconds

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

4 requests over 202ms

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.