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

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.

2.94 s

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

5.19 s

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

349 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.

2.95 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.

5.19 s

Page Load Progression

480 ms

961 ms

1.4 s

1.9 s

2.4 s

2.9 s

3.4 s

3.8 s

Checks

16 PASS 7 REVIEW

Third-Party Impact

55% third-party, 0 ms blocking

REVIEW

55% third-party, 0 ms blocking

Third-party code accounts for 55% of page weight (228.9 KiB of 419.3 KiB)

Third-party blocking time is low (0 ms)

45%

55%

First-party Third-party

JS Execution Cost

Action

1571ms total JS execution

REVIEW

1571ms total JS execution

https://www.creatorstoolshub.site/?m=1: 599ms CPU time

https://www.googletagmanager.com/gtag/js?id=G-M995...: 520ms CPU time

Unattributable: 453ms CPU time

Third-party scripts: 520ms (33% of total)

Main Thread Breakdown

Script Evaluation 33% Other 30% Style & Layout 15% Script Parsing & Compilation 13% Parse HTML & CSS 8%

Script	Total	Scripting	Parse/Compile	Party
https://www.creatorstoolshub.site/?m=1	599ms	68ms	117ms	1st
https://www.googletagmanager.com/gtag/js?id=G-M995VX1F19	520ms	430ms	78ms	3rd
Unattributable	453ms	9ms	0ms	1st

JS Bundles

2 scripts, 111 KB unused

REVIEW

2 scripts, 111 KB unused

https://www.googletagmanager.com/gtag/js?id=G-M995...: 71 KB unused (41%)

Consider code splitting or tree shaking to reduce unused code.

https://www.blogger.com/static/v1/widgets/95010190...: 40 KB unused (76%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 111 KB

111 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=G-M995VX1F19	176 KB	71 KB (41%)	✓	3rd
https://www.blogger.com/static/v1/widgets/950101909-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

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, 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

419 KB transferred, 28 requests

PASS

419 KB transferred, 28 requests

Page weighs 1.2 MB (419 KB transferred)

28 HTTP requests

Estimated 0.09 g CO2 per page load

419 KB transferred

28 requests

0.09 g CO2 per page load

JavaScript 228.4 KiB 54%

HTML 182.4 KiB 43%

Other 7.3 KiB 2%

Other 1.3 KiB 0%

Images 0 B 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

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+

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, 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).

Page Weight Inventory

28 resources · 419 KB · 111 KB savings available

PASS

28 resources · 419 KB · 111 KB savings available

Within 1MB page-weight target

Got: 419 KB

~111 KB of savings available

4 third-party resources (55% of weight)

28 resources · 419.3 KiB · 4 third-party Within 1MB page-weight target

JavaScript 54% · 228.4 KiB

Document 44% · 184.3 KiB

Image 1% · 6.0 KiB

Other 0% · 555 B

~111.2 KiB of savings available

Remove unused JavaScript: 111.2 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

28 resources			419.3 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: 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

28 requests over 1517ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

33% of JavaScript execution is third-party

First-party Third-party 520ms · 176KB · $7/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Google Tag Manager www.googletagmanager.com	Tag Manager	520ms	176 KB	41%	$7/mo	Costly

Google Tag Manager

Tag Manager

Costly

Execution 520ms

Transfer 176 KB

Unused 41%

Monthly Cost $7/mo

These scripts may cost more than they're worth

Google Tag Manager adds 520ms and costs ~$7/month

Google Tag Manager takes 520ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

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.