Performance

· 14 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.

380 ms

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

905 ms

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

3 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.

578 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.

1.20 s

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

6 PASS 4 REVIEW 2 FIX

Third-Party Impact

Action

98% third-party, 0 ms blocking

FIX

98% third-party, 0 ms blocking

Third-party code accounts for 98% of page weight (2.0 MiB of 2.0 MiB)

Third-party blocking time is low (0 ms)

98%

First-party Third-party

HTTP Caching

Action

No cache headers

FIX

No cache headers

No Cache-Control header found

Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

Page Weight Budget

Action

2.0 MB transferred, 42 requests

REVIEW

2.0 MB transferred, 42 requests

Page weighs 2.7 MB (2.0 MB transferred)

Images are 1.7 MB — compress or use modern formats

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Got: 1.7 MB

42 HTTP requests

Estimated 0.42 g CO2 per page load

2.0 MB transferred

42 requests

0.42 g CO2 per page load

Images 1.7 MiB 83%

JavaScript 303.8 KiB 15%

HTML 31.2 KiB 2%

Other 1.7 KiB 0%

Other 594 B 0%

CSS 553 B 0%

Fonts 138 B 0%

0 2.4 MB 4.9 MB

Approaching limit

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Image Optimization

18 images, 0 KB saveable

REVIEW

18 images, 0 KB saveable

All images are well-optimized

18 images 1.7 MB

0 oversized -0 KB

5 legacy format

0 missing dimensions CLS risk

JS Bundles

10 scripts, 131 KB unused

REVIEW

10 scripts, 131 KB unused

https://www.googletagmanager.com/gtag/js?id=G-CG6G...: 68 KB unused (40%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtm.js?id=GTM-P24...: 64 KB unused (49%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 131 KB

131 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=G-CG6GJ50G8J&cx=c&gtm=4e6431	171 KB	68 KB (40%)	✓	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-P24PF4B	131 KB	64 KB (49%)	✓	3rd
https://wordpress.org/wp-content/mu-plugins/pub-sync/blocks/language-suggest/build/front.js?ver=6f71d5ef610256d46dec	0 KB	—	✓	1st
https://wordpress.org/wp-content/plugins/gutenberg/build/modules/interactivity/index.min.js?ver=4d2a3a72c7410d548881	0 KB	—	✓	1st
https://wordpress.org/wp-content/plugins/gutenberg/build/modules/block-library/navigation/view.min.js?ver=96a846e1d7b789c39ab9-20240308	0 KB	—	✓	1st
https://wordpress.org/wp-content/mu-plugins/pub-sync/blocks/time/build/view.js?ver=385bfe9134bf98c52dda	0 KB	—	✓	1st
https://stats.wp.com/e-202615.js	2 KB	—	✓	3rd
https://wordpress.org/wp-content/mu-plugins/pub-sync/blocks/global-header-footer/js/view.js?ver=1751335906	0 KB	—	✓	1st
blob:https://wordpress.org/9d0022a3-cb84-4b5e-a9a2-861f91995e61	-0 KB	—	✓	3rd
https://wordpress.org/wp-includes/js/wp-emoji-release.min.js?ver=7.1-alpha-62213	0 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

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

JS Execution Cost

171ms total JS execution

PASS

171ms total JS execution

https://wordpress.org/: 60ms CPU time

https://www.googletagmanager.com/gtag/js?id=G-CG6G...: 58ms CPU time

Unattributable: 53ms CPU time

Third-party scripts: 111ms (65% of total)

Main Thread Breakdown

Script Evaluation 40% Other 26% Style & Layout 15% Script Parsing & Compilation 9% Parse HTML & CSS 5%

Script	Total	Scripting	Parse/Compile	Party
https://wordpress.org/	60ms	5ms	1ms	1st
https://www.googletagmanager.com/gtag/js?id=G-CG6GJ50G8J&cx=c&gtm=4e6431	58ms	47ms	10ms	3rd
Unattributable	53ms	2ms	0ms	3rd

A+

Font Loading

2 fonts (0 KB)

PASS

2 fonts (0 KB)

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

Web fonts

0 KB total

Render-blocking

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

Inter-latin.woff2 woff2 swap

Size 0 KB

Load time 0 ms

Start 0 ms

Risk FOUT — text flashes from fallback to web font

EBGaramond-latin.woff2 woff2 swap

Size 0 KB

Load time 0 ms

Start 0 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

Network Waterfall

42 requests over 0ms

INFO

Performance analysis not available for this result.

Third-Party Script Cost

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

INFO

65% of JavaScript execution is third-party

First-party Third-party 111ms · 171KB · $1/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Google Tag Manager www.googletagmanager.com	Tag Manager	58ms	171 KB	40%	$1/mo	Optional
Unattributable Unattributable	Other	53ms	0 KB	—	$1/mo	Optional

Google Tag Manager

Tag Manager

Optional

Execution 58ms

Transfer 171 KB

Unused 40%

Monthly Cost $1/mo

Unattributable

Other

Optional

Execution 53ms

Transfer 0 KB

Monthly Cost $1/mo

65% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

How third-party costs are calculated

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