Performance

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

SCORE

GRADE

A+

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

Performance

Accessibility

100

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.

1.90 s

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

2.23 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.

2.12 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.

2.23 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

21 PASS 2 REVIEW

JS Execution Cost

606ms total JS execution

REVIEW

606ms total JS execution

https://slidd.app/: 409ms CPU time

Unattributable: 130ms CPU time

https://static.cloudflareinsights.com/beacon.min.j...: 67ms CPU time

Third-party scripts: 67ms (11% of total)

Main Thread Breakdown

Other 56% Style & Layout 21% Script Evaluation 12% Rendering 8%

Script	Total	Scripting	Parse/Compile	Party
https://slidd.app/	409ms	6ms	1ms	1st
Unattributable	130ms	8ms	0ms	1st
https://static.cloudflareinsights.com/beacon.min.js/vce701823e78c4301a35b7e07294d87301792088814092	67ms	51ms	0ms	3rd

HTTP Caching

no-cache, private

REVIEW

no-cache, private

Cache-Control header is set

Got: no-cache, private

No ETag or Last-Modified header

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

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

28 KB transferred, 4 requests

PASS

28 KB transferred, 4 requests

Page weighs 100 KB (28 KB transferred)

4 HTTP requests

Estimated 0.01 g CO2 per page load

28 KB transferred

4 requests

0.01 g CO2 per page load

HTML 16.6 KiB 60%

JavaScript 10.2 KiB 37%

Other 477 B 2%

Other 454 B 2%

0 2.4 MB 4.9 MB

Under budget

Third-Party Impact

37% third-party, 0 ms blocking

PASS

37% third-party, 0 ms blocking

Third-party code accounts for 37% of page weight (10.2 KiB of 27.7 KiB)

Third-party blocking time is low (0 ms)

63%

37%

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+

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+

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, 0 KB unused

PASS

1 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://static.cloudflareinsights.com/beacon.min.js/vce701823e78c4301a35b7e07294d87301792088814092	10 KB	—	✓	3rd

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+

Document Compression

Document response uses brotli

PASS

Document 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-cache -- safe revalidate-on-request policy

PASS

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

Got: no-cache, private

A+

Server-Timing Observability

3 Server-Timing entries advertised

PASS

3 Server-Timing entries advertised

Server-Timing header advertises 3 timing entries

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

4 resources · 28 KB · 0 KB savings available

PASS

4 resources · 28 KB · 0 KB savings available

Within 1MB page-weight target

Got: 28 KB

1 third-party resources (37% of weight)

4 resources · 27.7 KiB · 1 third-party Within 1MB page-weight target

Document 60% · 16.6 KiB

JavaScript 37% · 10.2 KiB

Image 2% · 477 B

Other 2% · 454 B

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

4 resources			27.7 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

A+

JavaScript Blocking

No render-blocking JS or document.write usage detected

PASS

No render-blocking JS or document.write usage detected

No JavaScript blocking issues detected

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

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 541ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

11% of JavaScript execution is third-party

First-party Third-party 67ms · 10KB · $1/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
static.cloudflareinsights.com static.cloudflareinsights.com	Other	67ms	10 KB	—	$1/mo	Optional

static.cloudflareinsights.com

Other

Optional

Execution 67ms

Transfer 10 KB

Monthly Cost $1/mo

How third-party costs are calculated

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