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

100

Performance

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.

450 ms

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

450 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.

783 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.

450 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

14 PASS 4 REVIEW 1 FIX

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

No ETag or Last-Modified header

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

Cache-Control

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

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

Image Optimization

22 images, 0 KB saveable

REVIEW

22 images, 0 KB saveable

All images are well-optimized

22 images 20 KB

0 oversized -0 KB

21 legacy format

0 missing dimensions CLS risk

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.

Compression Algorithm

Action

Main response served uncompressed

REVIEW

Main response served uncompressed

Main HTML response has no Content-Encoding (uncompressed)

The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.

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

91 KB transferred, 26 requests

PASS

91 KB transferred, 26 requests

Page weighs 488 KB (91 KB transferred)

26 HTTP requests

Estimated 0.02 g CO2 per page load

91 KB transferred

26 requests

0.02 g CO2 per page load

JavaScript 50.2 KiB 55%

Images 19.7 KiB 22%

HTML 15.2 KiB 17%

CSS 5.9 KiB 6%

Other 270 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+

JS Execution Cost

238ms total JS execution

PASS

238ms total JS execution

https://xivclimbers.com/: 128ms CPU time

Unattributable: 110ms CPU time

Third-party scripts: 110ms (46% of total)

Main Thread Breakdown

Other 39% Style & Layout 27% Script Evaluation 16% Rendering 9% Parse HTML & CSS 8%

Script	Total	Scripting	Parse/Compile	Party
https://xivclimbers.com/	128ms	2ms	0ms	1st
Unattributable	110ms	3ms	0ms	3rd

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

1 scripts, 38 KB unused

PASS

1 scripts, 38 KB unused

https://xivclimbers.com/livewire/livewire.min.js?i...: 38 KB unused (76%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 38 KB

38 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://xivclimbers.com/livewire/livewire.min.js?id=df3a17f2	50 KB	38 KB (76%)	✓	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

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-store -- correct for sensitive/dynamic content

PASS

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

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

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

26 resources · 91 KB · 38 KB savings available

PASS

26 resources · 91 KB · 38 KB savings available

Within 1MB page-weight target

Got: 91 KB

1 third-party resources (0% of weight)

26 resources · 91.4 KiB · 1 third-party Within 1MB page-weight target

JavaScript 55% · 50.2 KiB

Image 22% · 20.0 KiB

Document 17% · 15.2 KiB

CSS 6% · 5.9 KiB

~37.7 KiB of savings available

Remove unused JavaScript: 37.7 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

26 resources			91.4 KiB

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: OVHcloud

Network Waterfall

26 requests over 1259ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

46% of JavaScript execution is third-party

First-party Third-party 110ms · 0KB · €1/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Unattributable Unattributable	Other	110ms	0 KB	—	€1/mo	Optional

Unattributable

Other

Optional

Execution 110ms

Transfer 0 KB

Monthly Cost €1/mo

46% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

How third-party costs are calculated

Image Optimization

200 images, 146 KB total, 73 KB wasted

INFO

Image Optimization Audit

Total Images

200

Total Size

146 KB

Oversized

174

Wasted

73 KB

200 missing dimensions 200 missing lazy loading

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