Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
3.23 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.26 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
692 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.037
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.23 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.
11.92 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2545ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.wa.gov.au/ | 847ms | 7ms | 1ms | 3rd |
| https://www.wa.gov.au/sites/default/files/js/js_2SQcvlEt6_foTYke8F9KJSBQXQ1t2pYESiYOkP9jY6M.js?scope=footer&delta=4&language=en&theme=wagov&include=eJxdjUEOgzAMBD-U4idF22C5piZGiVvo7-FApZbLamYuO6powFbkaKjdEExsPHONxFuY1ieN7bXAhlOTFPXcGa086IeTuItxDgjJMVcfMGH7j3NaIf4mMb_Dbj0-x4GcsQdCyzfuuNJBcw | 411ms | 295ms | 113ms | 3rd |
| Unattributable | 249ms | 16ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-T9CMS1VVP4&cx=c>m=4e64h1h1 | 230ms | 197ms | 29ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-T6LYWCE37G&cx=c>m=4e64h1 | 187ms | 154ms | 31ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-27204111-1 | 167ms | 134ms | 32ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WGQSNMR | 167ms | 124ms | 41ms | 3rd |
| https://www.wa.gov.au/sites/default/files/js/js_vRIadM6KIamoILtd3vr10pn9Y8VXpe--8_lRRHXJNyo.js?scope=footer&delta=1&language=en&theme=wagov&include=eJxdjUEOgzAMBD-U4idF22C5piZGiVvo7-FApZbLamYuO6powFbkaKjdEExsPHONxFuY1ieN7bXAhlOTFPXcGa086IeTuItxDgjJMVcfMGH7j3NaIf4mMb_Dbj0-x4GcsQdCyzfuuNJBcw | 144ms | 119ms | 13ms | 3rd |
| https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.eNjH1Jo6ldQ.O/am=AAAAAQ/d=1/exm=el_conf/ed=1/rs=AN8SPfq_osd-q7vwQm5aouAQRZibUmx4sg/m=el_main | 143ms | 102ms | 28ms | 3rd |
FJS BundlesAction16 scripts, 591 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.wa.gov.au/sites/default/files/js/js_2SQcvlEt6_foTYke8F9KJSBQXQ1t2pYESiYOkP9jY6M.js?scope=footer&delta=4&language=en&theme=wagov&include=eJxdjUEOgzAMBD-U4idF22C5piZGiVvo7-FApZbLamYuO6powFbkaKjdEExsPHONxFuY1ieN7bXAhlOTFPXcGa086IeTuItxDgjJMVcfMGH7j3NaIf4mMb_Dbj0-x4GcsQdCyzfuuNJBcw | 312 KB | 199 KB (66%) | ✓ | 3rd |
| https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.eNjH1Jo6ldQ.O/am=AAAAAQ/d=1/exm=el_conf/ed=1/rs=AN8SPfq_osd-q7vwQm5aouAQRZibUmx4sg/m=el_main | 119 KB | 94 KB (79%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WGQSNMR | 162 KB | 81 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-T6LYWCE37G&cx=c>m=4e64h1 | 153 KB | 65 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-27204111-1 | 125 KB | 63 KB (51%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-T9CMS1VVP4&cx=c>m=4e64h1h1 | 146 KB | 62 KB (43%) | ✓ | 3rd |
| https://www.wa.gov.au/sites/default/files/js/js_vRIadM6KIamoILtd3vr10pn9Y8VXpe--8_lRRHXJNyo.js?scope=footer&delta=1&language=en&theme=wagov&include=eJxdjUEOgzAMBD-U4idF22C5piZGiVvo7-FApZbLamYuO6powFbkaKjdEExsPHONxFuY1ieN7bXAhlOTFPXcGa086IeTuItxDgjJMVcfMGH7j3NaIf4mMb_Dbj0-x4GcsQdCyzfuuNJBcw | 33 KB | 26 KB (82%) | ✓ | 3rd |
| https://translate.google.com/translate_a/element.js?cb=Drupal.behaviors.googleTranslatorElement.init | 28 KB | — | ✓ | 3rd |
| https://www.wa.gov.au/themes/custom/wagov/js/static.js?taordx | 1 KB | — | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/js-cookie@3.0.5/dist/js.cookie.min.js | 1 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction45 resources · 1.4 MB · 591 KB savings availableFIX
~591.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 45 resources | 1.4 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
no-store, max-age=0
| Directive | Value | Meaning |
|---|---|---|
| no-store | — | Never cache this response |
| max-age | 0 | Cache for 0 seconds |
BPage Weight Budget1.4 MB transferred, 45 requestsREVIEW
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
BImage Optimization9 images, 0 KB saveableREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (80 KB)PASS
Web fonts
5
80 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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 ~2 KB and ~4 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall45 requests over 2190msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.wa.gov.au www.wa.gov.au | Other | 847ms | 76 KB | — | A$15/mo | Costly |
www.wa.gov.au www.wa.gov.au | Other | 411ms | 312 KB | 66% | A$7/mo | Costly |
Unattributable Unattributable | Other | 249ms | 0 KB | — | A$4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 230ms | 146 KB | 43% | A$4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 187ms | 153 KB | 42% | A$3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 167ms | 125 KB | 51% | A$3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 167ms | 162 KB | 50% | A$3/mo | Optional |
www.wa.gov.au www.wa.gov.au | Other | 144ms | 33 KB | 82% | A$2/mo | Optional |
translate.googleapis.com translate.googleapis.com | Other | 143ms | 119 KB | 79% | A$2/mo | Optional |
These scripts may cost more than they're worth
- www.wa.gov.au adds 847ms and costs ~A$15/month
- www.wa.gov.au adds 411ms and costs ~A$7/month
- Unattributable adds 249ms and costs ~A$4/month
- Google Tag Manager adds 230ms and costs ~A$4/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.
Learn more ▾ ▴
Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.
Source: web.dev
www.wa.gov.au takes 847ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.wa.gov.au takes 411ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
66% of www.wa.gov.au's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Unattributable takes 249ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 230ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
51% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
50% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
82% of www.wa.gov.au's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
79% of translate.googleapis.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev