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Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
84
GRADE
B
FIX
1
REVIEW
12
PASS
10
INFO
3

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
65
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
73
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.68 s

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

8.41 s

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

135 ms

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

0.016

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

5.75 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.

8.41 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
26
10 PASS 12 REVIEW 1 FIX
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
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.

B
Page Weight Budget
1.4 MB transferred, 42 requests
REVIEW
1.4 MB transferred, 42 requests
Info::
Page weighs 2.3 MB (1.4 MB transferred)
Info::
Fonts are 363 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 363 KB
Info::
42 HTTP requests
Info::
Estimated 0.30 g CO2 per page load
1.4 MB / 2.4 MB budget
1.4 MB transferred
42 requests
0.30 g CO2 per page load
Images 648.0 KiB 45%
Fonts 362.9 KiB 25%
JavaScript 355.7 KiB 24%
CSS 45.8 KiB 3%
HTML 38.6 KiB 3%
Other 2.0 KiB 0%
Other 548 B 0%
0 2.4 MB 4.9 MB
Under budget

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

B
Image Optimization
13 images, 0 KB saveable
REVIEW
13 images, 0 KB saveable
Warning::
https://aquadec.com.au/wp-content/uploads/2017/11/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
13 images 648 KB
0 oversized -0 KB
13 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
JS Execution Cost
Action
1530ms total JS execution
REVIEW
1530ms total JS execution
Warning::
https://aquadec.com.au/: 462ms CPU time
Warning::
https://aquadec.com.au/wp-content/plugins/mastersl...: 311ms CPU time
Info::
Unattributable: 221ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-XKMS...: 218ms CPU time
Info::
https://aquadec.com.au/wp-includes/js/jquery/jquer...: 160ms CPU time
Info::
Third-party scripts: 218ms (14% of total)

Main Thread Breakdown

Script Evaluation 38% Other 28% Style & Layout 21% Script Parsing & Compilation 5% Rendering 5% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://aquadec.com.au/462ms24ms8ms1st
https://aquadec.com.au/wp-content/plugins/masterslider/public/assets/js/masterslider.min.js?ver=3.7.8311ms121ms12ms1st
Unattributable221ms6ms0ms1st
https://www.googletagmanager.com/gtag/js?id=G-XKMSBW7TN1218ms176ms34ms3rd
https://aquadec.com.au/wp-includes/js/jquery/jquery.min.js?ver=3.7.1160ms137ms6ms1st
https://aquadec.com.au/wp-content/themes/Divi/js/scripts.min.js?ver=4.27.4158ms102ms17ms1st
C
JS Bundles
Action
9 scripts, 165 KB unused
REVIEW
9 scripts, 165 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-XKMS...: 69 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://aquadec.com.au/wp-content/themes/Divi/js/s...: 62 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://aquadec.com.au/wp-content/plugins/mastersl...: 34 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 165 KB
165 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-XKMSBW7TN1152 KB69 KB (45%)✓3rd
https://aquadec.com.au/wp-content/themes/Divi/js/scripts.min.js?ver=4.27.496 KB62 KB (65%)✓1st
https://aquadec.com.au/wp-content/plugins/masterslider/public/assets/js/masterslider.min.js?ver=3.7.854 KB34 KB (63%)✓1st
https://use.fontawesome.com/ba6692f8c3.js4 KB—✓3rd
https://aquadec.com.au/wp-includes/js/jquery/jquery.min.js?ver=3.7.138 KB—✓1st
https://aquadec.com.au/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.15 KB—✓1st
https://aquadec.com.au/wp-content/themes/Divi/core/admin/js/common.js?ver=4.27.41 KB—✓1st
https://aquadec.com.au/wp-content/plugins/masterslider/public/assets/js/jquery.easing.min.js?ver=3.7.82 KB—✓1st
https://aquadec.com.au/wp-content/plugins/google-analytics-for-wordpress/assets/js/frontend-gtag.min.js?ver=9.9.04 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

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

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
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.
B
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
REVIEW
Main response uses gzip; brotli would be ~20% smaller
Info::
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.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
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.
C
Page Weight Inventory
Action
42 resources · 1.4 MB · 165 KB savings available
REVIEW
42 resources · 1.4 MB · 165 KB savings available
Warning::
Page weight 1.4 MB exceeds 1 MB target by 430 KB
Got: 1.4 MB Expected: ≤ 1 MB
Info::
~165 KB of savings available
Info::
9 third-party resources (22% of weight)
Info::
1 resources over 200KB
42 resources · 1.4 MiB · 9 third-party 429.5 KiB over 1MB target
Image 45% · 650.0 KiB
Font 25% · 362.9 KiB
JavaScript 24% · 355.7 KiB
CSS 3% · 45.8 KiB
Document 3% · 38.6 KiB
Other 0% · 548 B

~165.1 KiB of savings available

Remove unused JavaScript: 165.1 KiB
B
JavaScript Blocking
1 JS blocking issue(s) detected
REVIEW
1 JS blocking issue(s) detected
Warning::
7 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
B
CSS Performance Depth
2 CSS depth issue(s) detected
REVIEW
2 CSS depth issue(s) detected
Warning::
7 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Warning::
2 `@font-face` rule(s) without `font-display` -- causes FOIT
An `@font-face` rule without `font-display` causes Flash of Invisible Text (FOIT): the browser hides the styled text for up to 3 seconds while the custom font downloads, then either swaps to fallback (Chrome / Firefox) or stays invisible (older Safari). Add `font-display: swap` (shows fallback immediately, swaps in the custom font when ready) or `font-display: optional` (uses fallback if the font isn't ready in 100ms; never causes visible swap). Either eliminates FOIT outright.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Third-Party Impact
22% third-party, 0 ms blocking
PASS
22% third-party, 0 ms blocking
Info::
Third-party code accounts for 22% of page weight (314.5 KiB of 1.4 MiB)
Info::
Third-party blocking time is low (0 ms)
78%
22%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
9 fonts (363 KB)
PASS
9 fonts (363 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

363 KB total

Render-blocking

0

of 9

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 2.7 s LCP 8.4 shttp://aquadec.com.au/wp-content/uploads/et-fonts/ProximaNova-Regular.otfProximaNova-Regular.otf http://aquadec.com.au/wp-content/uploads/et-fonts/ProximaNova-Regular.otf — 0 B — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVI.woff2memSYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVI.woff2 — 24.1 KiB — 65 ms — font-display: swaphttps://aquadec.com.au/wp-content/themes/Divi/core/admin/fonts/modules/all/modules.woffmodules.woff https://aquadec.com.au/wp-content/themes/Divi/core/admin/fonts/modules/all/modules.woff — 90.0 KiB — 495 ms — font-display: swaphttps://aquadec.com.au/wp-content/themes/divi-child/font/ProximaNova-Semibold.otfProximaNova-Semibold.otf https://aquadec.com.au/wp-content/themes/divi-child/font/ProximaNova-Semibold.otf — 61.7 KiB — 487 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVI.woff2memSYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVI.woff2 — 24.9 KiB — 68 ms — font-display: swaphttps://aquadec.com.au/wp-content/themes/divi-child/font/ProximaNova-Regular.otfProximaNova-Regular.otf https://aquadec.com.au/wp-content/themes/divi-child/font/ProximaNova-Regular.otf — 61.5 KiB — 487 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVI.woff2memSYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVI.woff2 — 24.8 KiB — 73 ms — font-display: swaphttp://aquadec.com.au/wp-content/uploads/et-fonts/ProximaNova-Regular.otfProximaNova-Regular.otf http://aquadec.com.au/wp-content/uploads/et-fonts/ProximaNova-Regular.otf — 0 B — 0 ms — font-display: swaphttps://use.fontawesome.com/releases/v4.7.0/fonts/fontawesome-webfont.woff2fontawesome-webfont.woff2 https://use.fontawesome.com/releases/v4.7.0/fonts/fontawesome-webfont.woff2 — 75.9 KiB — 180 ms — font-display: swap
ProximaNova-Regular.otf otf swap
Size 0 KB
Load time 0 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
memSYaGs126MiZpBA-UvWbX... woff2 swap
Size 24 KB
Load time 65 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
modules.woff woff swap
Size 90 KB
Load time 495 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
ProximaNova-Semibold.otf otf swap
Size 62 KB
Load time 487 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
memSYaGs126MiZpBA-UvWbX... woff2 swap
Size 25 KB
Load time 68 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
ProximaNova-Regular.otf otf swap
Size 61 KB
Load time 487 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
memSYaGs126MiZpBA-UvWbX... woff2 swap
Size 25 KB
Load time 73 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
ProximaNova-Regular.otf otf swap
Size 0 KB
Load time 0 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fontawesome-webfont.woff2 woff2 swap
Size 76 KB
Load time 180 ms
Start 2.2 s
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)

Fixing the unchecked items could save ~64 KB and ~128 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
1
preload
—
dns-prefetch
—
prefetch
—

1 resource hints configured

A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
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).
Info::
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+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
42 requests over 2984ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 2.7 s LCP 8.4 shttps://aquadec.com.au// https://aquadec.com.au/ — 200 — 38.6 KiB — 1.0 s — h2https://www.googletagmanager.com/gtag/js?id=G-XKMSBW7TN1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-XKMSBW7TN1 — 200 — 152.2 KiB — 255 ms — h2https://aquadec.com.au/wp-content/plugins/instagram-feed/css/sbi-styles.min.css?ver=6.10.0/wp-content/plugins/instagram-feed/... https://aquadec.com.au/wp-content/plugins/instagram-feed/css/sbi-styles.min.css?ver=6.10.0 — 200 — 11.9 KiB — 874 ms — h2https://aquadec.com.au/wp-content/et-cache/74/et-divi-dynamic-74.css?ver=1786427122/wp-content/et-cache/74/et-divi-dyn... https://aquadec.com.au/wp-content/et-cache/74/et-divi-dynamic-74.css?ver=1786427122 — 200 — 3.1 KiB — 706 ms — h2https://aquadec.com.au/wp-content/plugins/masterslider/public/assets/css/masterslider.main.css?ver=3.7.8/wp-content/plugins/masterslider/pu... https://aquadec.com.au/wp-content/plugins/masterslider/public/assets/css/masterslider.main.css?ver=3.7.8 — 200 — 19.6 KiB — 1.0 s — h2https://aquadec.com.au/wp-content/uploads/masterslider/custom.css?ver=8.4/wp-content/uploads/masterslider/cu... https://aquadec.com.au/wp-content/uploads/masterslider/custom.css?ver=8.4 — 200 — 1.9 KiB — 703 ms — h2https://aquadec.com.au/wp-content/themes/divi-child/style.css?ver=4.27.4/wp-content/themes/divi-child/style... https://aquadec.com.au/wp-content/themes/divi-child/style.css?ver=4.27.4 — 200 — 414 B — 698 ms — h2https://use.fontawesome.com/ba6692f8c3.jsuse.fontawesome.com/ba6692f8c3.js https://use.fontawesome.com/ba6692f8c3.js — 200 — 4.1 KiB — 215 ms — h2https://aquadec.com.au/wp-content/et-cache/74/et-core-unified-deferred-74.min.css?ver=1786427122/wp-content/et-cache/74/et-core-uni... https://aquadec.com.au/wp-content/et-cache/74/et-core-unified-deferred-74.min.css?ver=1786427122 — 200 — 1.0 KiB — 699 ms — h2https://aquadec.com.au/wp-content/uploads/2017/11/logo1-min.png/wp-content/uploads/2017/11/logo1-m... https://aquadec.com.au/wp-content/uploads/2017/11/logo1-min.png — 200 — 7.2 KiB — 874 ms — h2https://aquadec.com.au/wp-content/plugins/masterslider/public/assets/css/blank.gif/wp-content/plugins/masterslider/pu... https://aquadec.com.au/wp-content/plugins/masterslider/public/assets/css/blank.gif — 200 — 105 B — 1.0 s — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
14% of JavaScript execution is third-party
First-party Third-party 218ms · 152KB · A$1/mo
Google Tag Manager
Tag Manager
Costly
Execution 218ms
Transfer 152 KB
Unused 45%
Monthly Cost A$1/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 218ms and costs ~A$1/month

Google Tag Manager takes 218ms 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
8 images, 498 KB total, 383 KB wasted
INFO

Image Optimization Audit

Total Images

8

Total Size

498 KB

Oversized

3

Wasted

383 KB

4 missing dimensions 3 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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