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

Performance

100

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.

727 ms

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

727 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.

727 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

15 PASS 4 REVIEW

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, max-age=0

REVIEW

private, max-age=0

Cache-Control header is set

Got: private, max-age=0

ETag present — enables conditional (304) responses

Last-Modified header present

Cache-Control

private, max-age=0

Directive	Value	Meaning
private	—	Only browser cache, not CDN/proxy
max-age	0	Cache for 0 seconds

A+

Page Weight Budget

251 KB transferred, 6 requests

PASS

251 KB transferred, 6 requests

Page weighs 780 KB (251 KB transferred)

6 HTTP requests

Estimated 0.05 g CO2 per page load

251 KB transferred

6 requests

0.05 g CO2 per page load

HTML 192.4 KiB 77%

JavaScript 52.8 KiB 21%

Other 6.0 KiB 2%

Other 119 B 0%

Images 0 B 0%

0 2.4 MB 4.9 MB

Under budget

Third-Party Impact

21% third-party, 0 ms blocking

PASS

21% third-party, 0 ms blocking

Third-party code accounts for 21% of page weight (52.8 KiB of 251.3 KiB)

Third-party blocking time is low (0 ms)

79%

21%

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

1 images, 0 KB saveable

PASS

1 images, 0 KB saveable

All images are well-optimized

1 images 0 KB

0 oversized -0 KB

0 legacy format

0 missing dimensions CLS risk

A+

JS Execution Cost

356ms total JS execution

PASS

356ms total JS execution

https://www.creatorstoolshub.site/: 302ms CPU time

Unattributable: 54ms CPU time

Main Thread Breakdown

Other 57% Script Parsing & Compilation 13% Style & Layout 12% Parse HTML & CSS 8% Script Evaluation 8%

Script	Total	Scripting	Parse/Compile	Party
https://www.creatorstoolshub.site/	302ms	20ms	41ms	1st
Unattributable	54ms	2ms	0ms	1st

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, 40 KB unused

PASS

1 scripts, 40 KB unused

https://www.blogger.com/static/v1/widgets/39617324...: 40 KB unused (76%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 40 KB

40 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.blogger.com/static/v1/widgets/3961732468-widgets.js	53 KB	40 KB (76%)	✓	3rd

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 max-age=0 (≤ 5min) is appropriate

PASS

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

Got: private, max-age=0

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

Compressed response missing `Vary` header

The page is served with `Content-Encoding: gzip` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.

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).

A+

Page Weight Inventory

6 resources · 251 KB · 40 KB savings available

PASS

6 resources · 251 KB · 40 KB savings available

Within 1MB page-weight target

Got: 251 KB

2 third-party resources (21% of weight)

6 resources · 251.3 KiB · 2 third-party Within 1MB page-weight target

Document 77% · 192.6 KiB

JavaScript 21% · 52.8 KiB

Image 2% · 6.0 KiB

~39.8 KiB of savings available

Remove unused JavaScript: 39.8 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

6 resources			251.3 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: Google Cloud

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

6 requests over 668ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Image Optimization

2 images, 0 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

0 KB

Oversized

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