Performance
· 15 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.
635 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.98 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
346 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.014
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.25 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.
6.46 s
Page Load Progression
FPage Weight BudgetAction4.6 MB transferred, 210 requestsFIX
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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
FJS BundlesAction70 scripts, 1.7 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://adelaide.edu.au/etc.clientlibs/adelaideuniversity/clientlibs/clientlib-common.lc-d9d5b582dd34d7adaf0ef1c20c2a0ba3-lc.min.js | 295 KB | 236 KB (80%) | ✗ | 1st |
| https://adelaide.edu.au/etc.clientlibs/adelaideuniversity/clientlibs/clientlib-website.lc-a5d21b54d217c735512bb0457eea093b-lc.min.js | 424 KB | 212 KB (50%) | ✓ | 1st |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://t.contentsquare.net/uxa/9fe0d40f5d1d5.js | 138 KB | 109 KB (79%) | ✓ | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js | 110 KB | 84 KB (77%) | ✓ | 3rd |
| https://adelaide.edu.au/etc.clientlibs/core/fd/af-clientlibs/core-forms-components-runtime-all.lc-60494d950101b96925cc2fa59419dac5-lc.min.js | 117 KB | 74 KB (64%) | ✗ | 1st |
| https://www.googletagmanager.com/gtag/js?id=AW-16577573883 | 144 KB | 62 KB (43%) | ✓ | 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 InventoryAction210 resources · 4.6 MB · 1.7 MB savings availableFIX
~1.7 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 210 resources | 4.6 MiB | ||||||
BThird-Party Impact51% third-party, 0 ms blockingREVIEW
BImage Optimization47 images, 0 KB saveableREVIEW
CJS Execution CostAction1717ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://assets.adobedtm.com/be58e65e508a/0b9fe534cc0d/launch-57963a17723e.min.js | 368ms | 319ms | 19ms | 3rd |
| https://adelaide.edu.au/ | 261ms | 8ms | 1ms | 1st |
| Unattributable | 252ms | 27ms | 0ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 209ms | 175ms | 25ms | 3rd |
| https://adelaide.edu.au/etc.clientlibs/adelaideuniversity/clientlibs/clientlib-website.lc-a5d21b54d217c735512bb0457eea093b-lc.min.js | 130ms | 84ms | 44ms | 1st |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwOQ.js | 123ms | 100ms | 15ms | 3rd |
| https://adelaide.edu.au/etc.clientlibs/core/fd/af-clientlibs/core-forms-components-runtime-all.lc-60494d950101b96925cc2fa59419dac5-lc.min.js | 84ms | 64ms | 12ms | 1st |
| https://www.redditstatic.com/ads/pixel.js | 68ms | 63ms | 1ms | 3rd |
| https://adelaide.edu.au/etc.clientlibs/adelaideuniversity/clientlibs/clientlib-common.lc-d9d5b582dd34d7adaf0ef1c20c2a0ba3-lc.min.js | 61ms | 32ms | 23ms | 1st |
| https://connect.facebook.net/signals/config/878493097453016?v=2.9.303&r=stable&domain=adelaide.edu.au&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168 | 57ms | 52ms | 4ms | 3rd |
Showing top 10 of 12 scripts
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 Loading9 fonts (513 KB)PASS
Web fonts
9
513 KB total
Render-blocking
0
of 9
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~253 KB and ~506 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
AHTTP Cachingmax-age=300 (5 minutes)PASS
max-age=300,stale-while-revalidate=3600
| Directive | Value | Meaning |
|---|---|---|
| max-age | 300 | Cache for 5 minutes |
| stale-while-revalidate | 3600 | Serve stale for 1 hour while fetching fresh |
Network Waterfall210 requests over 3680msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
assets.adobedtm.com assets.adobedtm.com | Other | 368ms | 186 KB | 16% | A$10/mo | Costly |
Unattributable Unattributable | Other | 252ms | 0 KB | — | A$7/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 209ms | 0 KB | 49% | A$6/mo | Costly |
analytics.tiktok.com analytics.tiktok.com | Other | 123ms | 122 KB | 50% | A$3/mo | Optional |
www.redditstatic.com www.redditstatic.com | Other | 68ms | 19 KB | — | A$2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 57ms | 47 KB | — | A$2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 53ms | 147 KB | 35% | A$1/mo | Optional |
sc-static.net sc-static.net | Other | 51ms | 25 KB | — | A$1/mo | Optional |
These scripts may cost more than they're worth
- assets.adobedtm.com adds 368ms and costs ~A$10/month
- Unattributable adds 252ms and costs ~A$7/month
- www.gstatic.com adds 209ms and costs ~A$6/month
69% of JavaScript execution time comes from third-party scripts.
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
assets.adobedtm.com takes 368ms 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
Unattributable takes 252ms 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.gstatic.com takes 209ms 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