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.
15.33 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
24.33 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.30 s
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.
15.33 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.
29.97 s
Page Load Progression
FPage Weight BudgetAction28.8 MB transferred, 63 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
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction10007ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://wac-web.prod-east.frontend.public.atl-paas.net/assets/404.d7674a48.js | 6179ms | 5451ms | 30ms | 3rd |
| Unattributable | 2560ms | 127ms | 0ms | 3rd |
| https://www.atlassian.com/ | 898ms | 36ms | 30ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 262ms | 165ms | 83ms | 3rd |
| https://atl-onetrust-wrapper.atlassian.com/assets/atl-onetrust-wrapper.min.js | 108ms | 76ms | 26ms | 3rd |
FJS BundlesAction22 scripts, 1.6 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://wac-web.prod-east.frontend.public.atl-paas.net/assets/404.d7674a48.js | 1811 KB | 1052 KB (58%) | ✓ | 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://wac-web.prod-east.frontend.public.atl-paas.net/assets/home.139975db.js | 57 KB | 23 KB (43%) | ✓ | 3rd |
| https://wac-web.prod-east.frontend.public.atl-paas.net/assets/create-post-interaction-log-payload.a836ef9c.js | 6 KB | — | ✓ | 3rd |
| https://www.recaptcha.net/recaptcha/enterprise.js?render=6Le9VxMnAAAAALKRlj8jmKwUYmFTZWcF0y4o9QeD | 2 KB | — | ✓ | 3rd |
| https://wac-web.prod-east.frontend.public.atl-paas.net/assets/dev.87b06fdf.js | 9 KB | — | ✓ | 3rd |
| https://wac-web.prod-east.frontend.public.atl-paas.net/assets/create-payload.a39ee377.js | 6 KB | — | ✓ | 3rd |
| https://wac-web.prod-east.frontend.public.atl-paas.net/assets/create-payload.7bbdf96a.js | 18 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 InventoryAction63 resources · 28.8 MB · 1.6 MB savings availableFIX
~1.6 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 63 resources | 28.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction10 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
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 Loading10 fonts (314 KB)PASS
Web fonts
10
314 KB total
Render-blocking
0
of 10
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall63 requests over 4569msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
wac-web.prod-east.frontend.public.atl-paas.net wac-web.prod-east.frontend.public.atl-paas.net | Other | 6179ms | 1811 KB | 58% | €99/mo | Costly |
Unattributable Unattributable | Other | 2560ms | 0 KB | — | €41/mo | Costly |
www.atlassian.com www.atlassian.com | Other | 898ms | 142 KB | — | €14/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 262ms | 0 KB | 49% | €4/mo | Costly |
atl-onetrust-wrapper.atlassian.com atl-onetrust-wrapper.atlassian.com | Other | 108ms | 28 KB | — | €2/mo | Optional |
These scripts may cost more than they're worth
- wac-web.prod-east.frontend.public.atl-paas.net adds 6179ms and costs ~€99/month
- Unattributable adds 2560ms and costs ~€41/month
- www.atlassian.com adds 898ms and costs ~€14/month
- www.gstatic.com adds 262ms and costs ~€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
wac-web.prod-east.frontend.public.atl-paas.net takes 6179ms 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
58% of wac-web.prod-east.frontend.public.atl-paas.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
Unattributable takes 2560ms 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.atlassian.com takes 898ms 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 262ms 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