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.
2.02 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
17.93 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.19 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.127
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
7.24 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.
32.82 s
Page Load Progression
FPage Weight BudgetAction4.2 MB transferred, 188 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 Execution CostAction7020ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://assets.adobedtm.com/be58e65e508a/0b9fe534cc0d/launch-57963a17723e.min.js | 1237ms | 1091ms | 68ms | 3rd |
| Unattributable | 986ms | 156ms | 0ms | 3rd |
| https://adelaide.edu.au/ | 722ms | 20ms | 3ms | 1st |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 712ms | 604ms | 71ms | 3rd |
| https://adelaide.edu.au/etc.clientlibs/adelaideuniversity/clientlibs/clientlib-website.lc-a5d21b54d217c735512bb0457eea093b-lc.min.js | 569ms | 339ms | 165ms | 1st |
| https://adelaide.edu.au/etc.clientlibs/core/fd/af-clientlibs/core-forms-components-runtime-all.lc-60494d950101b96925cc2fa59419dac5-lc.min.js | 441ms | 339ms | 43ms | 1st |
| https://www.redditstatic.com/ads/pixel.js | 372ms | 350ms | 4ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 268ms | 241ms | 6ms | 3rd |
| https://adelaide.edu.au/etc.clientlibs/adelaideuniversity/clientlibs/clientlib-common.lc-d9d5b582dd34d7adaf0ef1c20c2a0ba3-lc.min.js | 222ms | 120ms | 82ms | 1st |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js | 210ms | 172ms | 33ms | 3rd |
Showing top 10 of 21 scripts
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 | 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://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.MWE0ZWQ3ZWQwOQ.js | 122 KB | 93 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 | 61 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 InventoryAction188 resources · 4.2 MB · 1.7 MB savings availableFIX
~1.7 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 188 resources | 4.2 MiB | ||||||
BThird-Party Impact55% third-party, 0 ms blockingREVIEW
BImage Optimization38 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 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 Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
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 Waterfall188 requests over 4749msINFO
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 | 1237ms | 186 KB | 16% | A$33/mo | Costly |
Unattributable Unattributable | Other | 986ms | 0 KB | — | A$26/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 712ms | 0 KB | 49% | A$19/mo | Costly |
www.redditstatic.com www.redditstatic.com | Other | 372ms | 19 KB | — | A$10/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 268ms | 26 KB | — | A$7/mo | Costly |
analytics.tiktok.com analytics.tiktok.com | Other | 210ms | 110 KB | 51% | A$6/mo | Costly |
sc-static.net sc-static.net | Other | 166ms | 25 KB | — | A$4/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 157ms | 147 KB | 36% | A$4/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 144ms | 97 KB | 32% | A$4/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 136ms | 47 KB | — | A$4/mo | Optional |
s.pinimg.com s.pinimg.com | Other | 135ms | 27 KB | — | A$4/mo | Optional |
t.contentsquare.net t.contentsquare.net | Other | 125ms | 138 KB | 79% | A$3/mo | Optional |
analytics.tiktok.com analytics.tiktok.com | Other | 111ms | 122 KB | 77% | A$3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 90ms | 144 KB | 43% | A$2/mo | Optional |
js.adsrvr.org js.adsrvr.org | Other | 84ms | 12 KB | — | A$2/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 81ms | 19 KB | — | A$2/mo | Optional |
These scripts may cost more than they're worth
- assets.adobedtm.com adds 1237ms and costs ~A$33/month
- Unattributable adds 986ms and costs ~A$26/month
- www.gstatic.com adds 712ms and costs ~A$19/month
- www.redditstatic.com adds 372ms and costs ~A$10/month
- Microsoft Clarity adds 268ms and costs ~A$7/month
- analytics.tiktok.com adds 210ms and costs ~A$6/month
71% 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
assets.adobedtm.com takes 1237ms 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 986ms 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 712ms 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.redditstatic.com takes 372ms 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
Microsoft Clarity takes 268ms 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
analytics.tiktok.com takes 210ms 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 analytics.tiktok.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
79% of t.contentsquare.net'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
77% of analytics.tiktok.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