https://stationery.wiki/Stationery_Wiki:Mechanical_Pencil_Day_Contest

Performance

· 27 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.

1.57 s

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

1.57 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

31 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.022

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

2.90 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.

3.13 s

Page Load Progression

393 ms

786 ms

1.2 s

1.6 s

2.0 s

2.4 s

2.8 s

3.1 s

Checks

16 PASS 7 REVIEW

Image Optimization

12 images, 0 KB saveable

REVIEW

12 images, 0 KB saveable

All images are well-optimized

12 images 53 KB

0 oversized -0 KB

7 legacy format

0 missing dimensions CLS risk

JS Execution Cost

Action

1923ms total JS execution

REVIEW

1923ms total JS execution

https://stationery.wiki/Stationery_Wiki:Mechanical...: 1240ms CPU time

Unattributable: 295ms CPU time

https://stationery.wiki/load.php?lang=en-gb&module...: 221ms CPU time

https://stationery.wiki/load.php?lang=en-gb&module...: 167ms CPU time

Main Thread Breakdown

Rendering 29% Other 27% Script Evaluation 22% Style & Layout 16% Script Parsing & Compilation 4%

Script	Total	Scripting	Parse/Compile	Party
https://stationery.wiki/Stationery_Wiki:Mechanical_Pencil_Day_Contest	1240ms	19ms	4ms	1st
Unattributable	295ms	7ms	0ms	1st
https://stationery.wiki/load.php?lang=en-gb&modules=startup&only=scripts&raw=1&skin=vector-2022	221ms	146ms	6ms	1st
https://stationery.wiki/load.php?lang=en-gb&modules=ext.jquery.async%7Cext.smw%7Cext.smw.purge%2Cstyles%7Cjquery%2Csite%7Cjquery.client%7Cmediawiki.String%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Cstorage%2Ctoc%2Cuser%2Cutil%7Cmediawiki.action.view.redirect%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cskins.vector.clientPreferences%2Cjs%7Cskins.vector.icons.js%7Csmw.entityexaminer&skin=vector-2022&version=1gya7	167ms	102ms	49ms	1st

JS Bundles

4 scripts, 107 KB unused

REVIEW

4 scripts, 107 KB unused

https://stationery.wiki/load.php?lang=en-gb&module...: 56 KB unused (83%)

Consider code splitting or tree shaking to reduce unused code.

https://stationery.wiki/load.php?lang=en-gb&module...: 51 KB unused (47%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 107 KB

107 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://stationery.wiki/load.php?lang=en-gb&modules=skins.vector.search.codex.scripts%7Cvue&skin=vector-2022&version=38uqh	68 KB	56 KB (83%)	✓	1st
https://stationery.wiki/load.php?lang=en-gb&modules=ext.jquery.async%7Cext.smw%7Cext.smw.purge%2Cstyles%7Cjquery%2Csite%7Cjquery.client%7Cmediawiki.String%2CTitle%2Capi%2Cbase%2Ccldr%2Ccookie%2Cexperiments%2CjqueryMsg%2Clanguage%2Cstorage%2Ctoc%2Cuser%2Cutil%7Cmediawiki.action.view.redirect%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.media%2Cready%7Cmediawiki.page.watch.ajax%7Cskins.vector.clientPreferences%2Cjs%7Cskins.vector.icons.js%7Csmw.entityexaminer&skin=vector-2022&version=1gya7	110 KB	51 KB (47%)	✓	1st
https://stationery.wiki/load.php?lang=en-gb&modules=startup&only=scripts&raw=1&skin=vector-2022	12 KB	—	✓	1st
https://stationery.wiki/load.php?lang=en-gb&modules=ext.smw.tooltip%7Cext.smw.tooltip.styles&skin=vector-2022&version=19ns0	19 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

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

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.

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.

HTTP Caching

private, must-revalidate, max-age=0

REVIEW

private, must-revalidate, max-age=0

Cache-Control header is set

Got: private, must-revalidate, max-age=0

Last-Modified header present

Cache-Control

private, must-revalidate, max-age=0

Directive	Value	Meaning
private	—	Only browser cache, not CDN/proxy
must-revalidate	—	Must recheck with server after expiry
max-age	0	Cache for 0 seconds

A+

Page Weight Budget

304 KB transferred, 24 requests

PASS

304 KB transferred, 24 requests

Page weighs 1000 KB (304 KB transferred)

24 HTTP requests

Estimated 0.06 g CO2 per page load

304 KB transferred

24 requests

0.06 g CO2 per page load

JavaScript 208.1 KiB 69%

Images 53.2 KiB 18%

CSS 19.6 KiB 6%

Other 12.2 KiB 4%

HTML 10.0 KiB 3%

Other 494 B 0%

0 2.4 MB 4.9 MB

Under budget

A+

Third-Party Impact

3% third-party, 0 ms blocking

PASS

3% third-party, 0 ms blocking

Third-party code accounts for 3% of page weight (9.3 KiB of 303.7 KiB)

Third-party blocking time is low (0 ms)

97%

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+

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+

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 max-age=0 (≤ 5min) is appropriate

PASS

Main HTML max-age=0 (≤ 5min) is appropriate

Got: private, must-revalidate, max-age=0

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: Accept-Encoding,Cookie,User-Agent

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).

`Last-Modified` present -- timestamp-based conditional GET supported

Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.

A+

Page Weight Inventory

24 resources · 304 KB · 107 KB savings available

PASS

24 resources · 304 KB · 107 KB savings available

Within 1MB page-weight target

Got: 304 KB

~107 KB of savings available

6 third-party resources (3% of weight)

24 resources · 303.7 KiB · 6 third-party Within 1MB page-weight target

JavaScript 69% · 208.1 KiB

Image 18% · 53.2 KiB

Document 7% · 22.2 KiB

CSS 6% · 19.6 KiB

Other 0% · 494 B

~107.1 KiB of savings available

Remove unused JavaScript: 107.1 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

24 resources			303.7 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: ALL-INKL.COM

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

24 requests over 2808ms

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 (2026-09-21 — 2026-10-18)

LCP (p75)

1213 ms

97% good

INP (p75)

0 ms

0% good

CLS (p75)

0.020

90% good

FCP (p75)

1211 ms

TTFB (p75)

0 ms

Image Optimization

9 images, 2 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

2 KB

6 missing alt text 6 missing lazy loading

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