Performance

· 23 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

100

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.

475 ms

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

531 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.

0.003

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

475 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.

531 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

14 PASS 5 REVIEW

JS Bundles

5 scripts, 73 KB unused

REVIEW

5 scripts, 73 KB unused

https://www.googletagmanager.com/gtag/js?id=GT-NGK...: 73 KB unused (41%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 73 KB

73 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=GT-NGK593CV	177 KB	73 KB (41%)	✓	3rd
https://nelgossip.it/wp-content/themes/nelgossip-theme/assets/editorial-analytics.js?ver=4.165.46	2 KB	—	✓	1st
https://nelgossip.it/wp-content/plugins/google-site-kit/dist/assets/js/googlesitekit-events-provider-content-events-90bacb156ab34fa090db.js	3 KB	—	✓	1st
blob:https://nelgossip.it/ddf9ef21-c471-468d-9931-ec639dc69f02	-0 KB	—	✓	3rd
https://nelgossip.it/wp-includes/js/wp-emoji-release.min.js?ver=7.1.4	5 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

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.

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

Page Weight Budget

729 KB transferred, 45 requests

PASS

729 KB transferred, 45 requests

Page weighs 1.3 MB (729 KB transferred)

45 HTTP requests

Estimated 0.15 g CO2 per page load

729 KB transferred

45 requests

0.15 g CO2 per page load

Images 399.3 KiB 55%

JavaScript 187.4 KiB 26%

Fonts 92.1 KiB 13%

HTML 24.5 KiB 3%

CSS 15.4 KiB 2%

Other 9.8 KiB 1%

Other 546 B 0%

0 2.4 MB 4.9 MB

Under budget

Third-Party Impact

28% third-party, 0 ms blocking

PASS

28% third-party, 0 ms blocking

Third-party code accounts for 28% of page weight (204.2 KiB of 729.1 KiB)

Third-party blocking time is low (0 ms)

72%

28%

First-party Third-party

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

Image Optimization

33 images, 0 KB saveable

PASS

33 images, 0 KB saveable

All images are well-optimized

33 images 399 KB

0 oversized -0 KB

2 legacy format

0 missing dimensions CLS risk

A+

JS Execution Cost

238ms total JS execution

PASS

238ms total JS execution

https://nelgossip.it/: 121ms CPU time

https://www.googletagmanager.com/gtag/js?id=GT-NGK...: 62ms CPU time

Unattributable: 54ms CPU time

Third-party scripts: 62ms (26% of total)

Main Thread Breakdown

Other 32% Script Evaluation 30% Style & Layout 22% Rendering 8% Script Parsing & Compilation 5% Parse HTML & CSS 4%

Script	Total	Scripting	Parse/Compile	Party
https://nelgossip.it/	121ms	13ms	1ms	1st
https://www.googletagmanager.com/gtag/js?id=GT-NGK593CV	62ms	51ms	10ms	3rd
Unattributable	54ms	2ms	0ms	1st

A+

Font Loading

3 fonts (92 KB)

PASS

3 fonts (92 KB)

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

Web fonts

92 KB total

Render-blocking

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

barlow-condensed-700.woff2 woff2 swap

Size 22 KB

Load time 43 ms

Start 144 ms

Risk FOUT — text flashes from fallback to web font

inter-latin.woff2 woff2 swap

Size 48 KB

Load time 44 ms

Start 254 ms

Risk FOUT — text flashes from fallback to web font

barlow-condensed-800.woff2 woff2 swap

Size 22 KB

Load time 43 ms

Start 254 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+

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=3 (≤ 5min) is appropriate

PASS

Main HTML max-age=3 (≤ 5min) is appropriate

Got: max-age=3, must-revalidate

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: Accept-Encoding,Cookie

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

45 resources · 729 KB · 73 KB savings available

PASS

45 resources · 729 KB · 73 KB savings available

Within 1MB page-weight target

Got: 729 KB

~73 KB of savings available

5 third-party resources (28% of weight)

45 resources · 729.1 KiB · 5 third-party Within 1MB page-weight target

Image 56% · 409.2 KiB

JavaScript 26% · 187.4 KiB

Font 13% · 92.1 KiB

Document 3% · 24.5 KiB

CSS 2% · 15.4 KiB

Other 0% · 546 B

~73.2 KiB of savings available

Remove unused JavaScript: 73.2 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

45 resources			729.1 KiB

HTTP Caching

max-age=3 (3 seconds)

PASS

max-age=3 (3 seconds)

Cache-Control header is set

Got: max-age=3, must-revalidate

Effective TTL: 3 seconds (max-age=3)

No ETag or Last-Modified header

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

Cache-Control

max-age=3, must-revalidate

Directive	Value	Meaning
max-age	3	Cache for 3 seconds
must-revalidate	—	Must recheck with server after expiry

Effective TTL: 3 seconds

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

45 requests over 1240ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

26% of JavaScript execution is third-party

First-party Third-party 62ms · 177KB · €1/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Google Tag Manager www.googletagmanager.com	Tag Manager	62ms	177 KB	41%	€1/mo	Optional

Google Tag Manager

Tag Manager

Optional

Execution 62ms

Transfer 177 KB

Unused 41%

Monthly Cost €1/mo

How third-party costs are calculated

Image Optimization

67 images, 53 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

53 KB

4 missing lazy loading

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