Performance

· 28 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

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.

5.19 s

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

5.46 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.

5.19 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.

5.46 s

Page Load Progression

1.0 s

2.0 s

3.0 s

4.0 s

5.1 s

6.1 s

7.1 s

8.1 s

Checks

14 PASS 8 REVIEW 2 FIX

Third-Party Impact

Action

76% third-party, 0 ms blocking

FIX

76% third-party, 0 ms blocking

Third-party code accounts for 76% of page weight (497.7 KiB of 652.5 KiB)

Third-party blocking time is low (0 ms)

24%

76%

First-party Third-party

JS Execution Cost

Action

29052ms total JS execution

FIX

29052ms total JS execution

https://quarterchart.com/sales-gate: 27813ms CPU time

Unattributable: 1109ms CPU time

https://d10ljhp4s33jqi.cloudfront.net/js/app-metri...: 131ms CPU time

Third-party scripts: 131ms (0% of total)

Main Thread Breakdown

Other 57% Style & Layout 27% Rendering 15%

Script	Total	Scripting	Parse/Compile	Party
https://quarterchart.com/sales-gate	27813ms	33ms	6ms	1st
Unattributable	1109ms	3ms	0ms	1st
https://d10ljhp4s33jqi.cloudfront.net/js/app-metrics.js?v=web-v5	131ms	113ms	2ms	3rd

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.

Asset Compression

Action

1 of 3 asset hosts serve text uncompressed

REVIEW

1 of 3 asset hosts serve text uncompressed

d10ljhp4s33jqi.cloudfront.net serves assets with gzip; brotli would be ~20% smaller (assets: 140)

Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.

Got: d10ljhp4s33jqi.cloudfront.net (text/javascript)

us-assets.i.posthog.com serves assets with brotli (assets: 5)

Got: us-assets.i.posthog.com (application/javascript)

fonts.googleapis.com serves text assets uncompressed (assets: 4)

The sampled response carries a text content type but no Content-Encoding, so the bytes go over the wire raw. Text compression typically removes 70-80% of a JS or CSS payload -- this is the single cheapest transfer win available on this host.

Got: fonts.googleapis.com (text/css)

Main HTML Cache-Control

Cache-Control present but without max-age

REVIEW

Cache-Control present but without max-age

Main HTML Cache-Control has no max-age: public, s-maxage=14400, stale-while-revalidate=3600

Got: public, s-maxage=14400, stale-while-revalidate=3600

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.

JavaScript Blocking

2 JS blocking issue(s) detected

REVIEW

2 JS blocking issue(s) detected

5 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.

Total JS execution time is 29.1 s -- over the 3.5s budget

Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

HTTP Caching

public, s-maxage=14400, stale-while-revalidate=3600

REVIEW

public, s-maxage=14400, stale-while-revalidate=3600

Cache-Control header is set

Got: public, s-maxage=14400, stale-while-revalidate=3600

CDN TTL: 4 hours (s-maxage=14400)

No ETag or Last-Modified header

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

Cache-Control

public, s-maxage=14400, stale-while-revalidate=3600

Directive	Value	Meaning
public	—	Any cache may store this response
s-maxage	14400	CDN caches for 4 hours
stale-while-revalidate	3600	Serve stale for 1 hour while fetching fresh

A+

Page Weight Budget

652 KB transferred, 34 requests

PASS

652 KB transferred, 34 requests

Page weighs 2.1 MB (652 KB transferred)

34 HTTP requests

Estimated 0.13 g CO2 per page load

652 KB transferred

34 requests

0.13 g CO2 per page load

JavaScript 322.3 KiB 49%

HTML 152.8 KiB 23%

Images 120.9 KiB 19%

Fonts 47.3 KiB 7%

Other 4.6 KiB 1%

CSS 2.6 KiB 0%

Other 2.0 KiB 0%

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

14 images, 0 KB saveable

PASS

14 images, 0 KB saveable

All images are well-optimized

14 images 114 KB

0 oversized -0 KB

1 legacy format

0 missing dimensions CLS risk

A+

Font Loading

1 fonts (47 KB)

PASS

1 fonts (47 KB)

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

Web fonts

47 KB total

Render-blocking

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

UcC73FwrK3iLTeHuS_nVMrM... woff2 swap

Size 47 KB

Load time 31 ms

Start 612 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

7 scripts, 0 KB unused

PASS

7 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://d10ljhp4s33jqi.cloudfront.net/frontend/runtime.6f564f07abb9d2e16298.js	3 KB	—	✓	3rd
https://d10ljhp4s33jqi.cloudfront.net/frontend/react-core.26ceb5ad88362447c2b0.js	48 KB	—	✓	3rd
https://d10ljhp4s33jqi.cloudfront.net/frontend/mui-framework.c011c437d4affb1d9bd5.js	118 KB	—	✓	3rd
https://d10ljhp4s33jqi.cloudfront.net/frontend/vendors.3478b8e967c308f85565.js	123 KB	—	✓	3rd
https://d10ljhp4s33jqi.cloudfront.net/frontend/main.b372a5254e6e3ed40e32.js	23 KB	—	✓	3rd
https://d10ljhp4s33jqi.cloudfront.net/js/app-metrics.js?v=web-v5	7 KB	—	✓	3rd
https://d10ljhp4s33jqi.cloudfront.net/js/app-metrics.js?v=web-v5	0 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

9 hints, 0 missing preconnects

PASS

9 hints, 0 missing preconnects

Page uses 9 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

prefetch

—

9 resource hints configured

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: Cookie,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.

Page Weight Inventory

34 resources · 652 KB · 0 KB savings available

PASS

34 resources · 652 KB · 0 KB savings available

Within 1MB page-weight target

Got: 652 KB

28 third-party resources (76% of weight)

34 resources · 652.5 KiB · 28 third-party Within 1MB page-weight target

JavaScript 49% · 322.3 KiB

Document 23% · 152.8 KiB

Image 19% · 125.5 KiB

Font 7% · 47.3 KiB

CSS 0% · 2.6 KiB

Other 0% · 2.0 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

34 resources			652.5 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+

CSS Performance Depth

No CSS performance depth issues detected

PASS

No CSS performance depth issues detected

Network Waterfall

34 requests over 1380ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

0% of JavaScript execution is third-party

First-party Third-party 131ms · 0KB · €1/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
d10ljhp4s33jqi.cloudfront.net d10ljhp4s33jqi.cloudfront.net	Other	131ms	0 KB	—	€1/mo	Optional

d10ljhp4s33jqi.cloudfront.net

Other

Optional

Execution 131ms

Transfer 0 KB

Monthly Cost €1/mo

How third-party costs are calculated

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 (2026-09-01 — 2026-09-28)

LCP (p75)

2277 ms

77% good

INP (p75)

350 ms

57% good

CLS (p75)

0.000

94% good

FCP (p75)

2049 ms

TTFB (p75)

1660 ms

Image Optimization

132 images, 0 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

132

Total Size

0 KB

Oversized

130 missing dimensions 51 missing lazy loading

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