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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
65
GRADE
D
FIX
4
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
25
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
88
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

14.03 s

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

22.43 s

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

4.32 s

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.

14.03 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.

30.90 s

Page Load Progression

966 ms
1.9 s
2.9 s
3.9 s
4.8 s
5.8 s
6.8 s
7.7 s
Checks
14
5 PASS 3 REVIEW 4 FIX
F
Page Weight Budget
Action
30.7 MB transferred, 76 requests
FIX
30.7 MB transferred, 76 requests
Critical::
Page weighs 41.0 MB (30.7 MB transferred)
Warning::
JavaScript is 2.9 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.9 MB
Warning::
Images are 1.6 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.6 MB
Info::
Fonts are 314 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 314 KB
Info::
76 HTTP requests
Info::
Estimated 6.4 g CO2 per page load
30.7 MB / 2.4 MB budget
30.7 MB transferred
76 requests
6.4 g CO2 per page load
Other 25.6 MiB 83%
JavaScript 2.9 MiB 9%
Images 1.6 MiB 5%
Fonts 313.8 KiB 1%
HTML 173.5 KiB 1%
Other 57.8 KiB 0%
CSS 57.7 KiB 0%
Other 3.8 KiB 0%
Other 2.8 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

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.

Why this matters

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.

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

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (30.6 MiB of 30.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
16105ms total JS execution
FIX
16105ms total JS execution
Warning::
https://wac-web.prod-east.frontend.public.atl-paas...: 10511ms CPU time
Warning::
Unattributable: 3067ms CPU time
Warning::
https://www.atlassian.com/: 1003ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5RJ...: 548ms CPU time
Warning::
https://cdn.cookielaw.org/scripttemplates/202503.2...: 436ms CPU time
Warning::
Third-party scripts: 15102ms (94% of total)

Main Thread Breakdown

Script Evaluation 62% Other 21% Style & Layout 8%
ScriptTotalScriptingParse/CompileParty
https://wac-web.prod-east.frontend.public.atl-paas.net/assets/404.e73ccca2.js10511ms8559ms38ms3rd
Unattributable3067ms171ms0ms3rd
https://www.atlassian.com/1003ms61ms38ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-5RJSBR548ms453ms89ms3rd
https://cdn.cookielaw.org/scripttemplates/202503.2.0/otBannerSdk.js436ms317ms62ms3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js372ms221ms133ms3rd
https://atl-onetrust-wrapper.atlassian.com/assets/atl-onetrust-wrapper.min.js106ms71ms30ms3rd
https://cdn.cookielaw.org/consent/1ef16389-2e72-4349-ad86-ea904db9373b/otSDKStub.js63ms57ms4ms3rd
F
JS Bundles
Action
21 scripts, 1.6 MB unused
FIX
21 scripts, 1.6 MB unused
Warning::
https://wac-web.prod-east.frontend.public.atl-paas...: 972 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5RJ...: 74 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.6 MB
1667 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://wac-web.prod-east.frontend.public.atl-paas.net/assets/404.e73ccca2.js1725 KB972 KB (57%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js0 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5RJSBR187 KB74 KB (39%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202503.2.0/otBannerSdk.js117 KB61 KB (52%)✓3rd
https://wac-web.prod-east.frontend.public.atl-paas.net/assets/home.5ef29f96.js57 KB23 KB (43%)✓3rd
https://wac-web.prod-east.frontend.public.atl-paas.net/assets/home.fc269b1c.js20 KB—✓3rd
https://cdn.cookielaw.org/consent/1ef16389-2e72-4349-ad86-ea904db9373b/otSDKStub.js10 KB—✓3rd
https://wac-web.prod-east.frontend.public.atl-paas.net/assets/create-post-interaction-log-payload.03ec4be3.js6 KB—✓3rd

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

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

C
Image Optimization
Action
15 images, 0 KB saveable
REVIEW
15 images, 0 KB saveable
Warning::
https://dam-cdn.atl.orangelogic.com/AssetLink/a8yv... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAA... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
15 images 1.6 MB
0 oversized -0 KB
12 legacy format
2 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

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
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0, s-maxage=1200, stale-while-revalidate=1200, stale-if-error=1200, no-cache="Set-Cookie"
REVIEW
max-age=0, s-maxage=1200, stale-while-revalidate=1200, stale-if-error=1200, no-cache="Set-Cookie"
Info::
Cache-Control header is set
Got: max-age=0, s-maxage=1200, stale-while-revalidate=1200, stale-if-error=1200, no-cache="Set-Cookie"
Info::
CDN TTL: 20 minutes (s-maxage=1200)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=0, s-maxage=1200, stale-while-revalidate=1200, stale-if-error=1200, no-cache="Set-Cookie"

DirectiveValueMeaning
max-age0Cache for 0 seconds
s-maxage1200CDN caches for 20 minutes
stale-while-revalidate1200Serve stale for 20 minutes while fetching fresh
stale-if-error1200
no-cache"Set-Cookie"Cache but always revalidate first
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
10 fonts (314 KB)
PASS
10 fonts (314 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

314 KB total

Render-blocking

0

of 10

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s FCP 14.0 s LCP 22.4 shttps://ds-cdn.prod-east.frontend.public.atl-paas.net/assets/fonts/atlassian-sans/v4/AtlassianSans-latin.woff2AtlassianSans-latin.woff2 https://ds-cdn.prod-east.frontend.public.atl-paas.net/assets/fonts/atlassian-sans/v4/AtlassianSans-latin.woff2 — 71.9 KiB — 0 ms — font-display: swaphttps://assets.ctfassets.net/rz1oowkt5gyp/41EruTPEOU9hcBwH94UVuZ/73ac40404d750278b451bf2adf186b1b/Charlie_Text-Regular.woff2Charlie_Text-Regular.woff2 https://assets.ctfassets.net/rz1oowkt5gyp/41EruTPEOU9hcBwH94UVuZ/73ac40404d750278b451bf2adf186b1b/Charlie_Text-Regular.woff2 — 25.3 KiB — 0 ms — font-display: swaphttps://assets.ctfassets.net/rz1oowkt5gyp/55uCHq9XzIzIG8yO7WRqfM/b62779fff17f06743e490f6d98a2001a/Charlie_Display-Bold.woff2Charlie_Display-Bold.woff2 https://assets.ctfassets.net/rz1oowkt5gyp/55uCHq9XzIzIG8yO7WRqfM/b62779fff17f06743e490f6d98a2001a/Charlie_Display-Bold.woff2 — 27.1 KiB — 0 ms — font-display: swaphttps://assets.ctfassets.net/rz1oowkt5gyp/2d4nxzJwX8hfIqUN71D4OD/5e2c0c2a3677d935e91dd46635d5149d/Charlie_Text-Semibold.woff2Charlie_Text-Semibold.w... https://assets.ctfassets.net/rz1oowkt5gyp/2d4nxzJwX8hfIqUN71D4OD/5e2c0c2a3677d935e91dd46635d5149d/Charlie_Text-Semibold.woff2 — 25.6 KiB — 0 ms — font-display: swaphttps://assets.ctfassets.net/rz1oowkt5gyp/6nq3flI8NfgICrz3jZjLyD/81918253d594b7bb77eb898a468d4328/Charlie_Display-Regular.woff2Charlie_Display-Regular... https://assets.ctfassets.net/rz1oowkt5gyp/6nq3flI8NfgICrz3jZjLyD/81918253d594b7bb77eb898a468d4328/Charlie_Display-Regular.woff2 — 24.7 KiB — 0 ms — font-display: swaphttps://assets.ctfassets.net/rz1oowkt5gyp/2QtjA2B9aCIa8HvyZcNWqL/886e02c2b15732bc62dc9550078d991c/Charlie_Display-Black.woff2Charlie_Display-Black.w... https://assets.ctfassets.net/rz1oowkt5gyp/2QtjA2B9aCIa8HvyZcNWqL/886e02c2b15732bc62dc9550078d991c/Charlie_Display-Black.woff2 — 27.6 KiB — 0 ms — font-display: swaphttps://assets.ctfassets.net/rz1oowkt5gyp/6fvn66mVrRz4Yw3gQoPaJJ/458e6a69f0036d1e566e028fcbc26a50/Charlie_Text-Bold.woff2Charlie_Text-Bold.woff2 https://assets.ctfassets.net/rz1oowkt5gyp/6fvn66mVrRz4Yw3gQoPaJJ/458e6a69f0036d1e566e028fcbc26a50/Charlie_Text-Bold.woff2 — 26.2 KiB — 0 ms — font-display: swaphttps://assets.ctfassets.net/rz1oowkt5gyp/8JLDocv5sujCQIY4WEZsz/ebe26b857bf93efe919a72c3697afa82/Charlie_Display-Light.woff2Charlie_Display-Light.w... https://assets.ctfassets.net/rz1oowkt5gyp/8JLDocv5sujCQIY4WEZsz/ebe26b857bf93efe919a72c3697afa82/Charlie_Display-Light.woff2 — 25.6 KiB — 0 ms — font-display: swaphttps://assets.ctfassets.net/rz1oowkt5gyp/3KRSiun937K2pXBPYiUwgB/17f578e7699c12924de360e09c018c7c/Charlie_Display-Semibold.woff2Charlie_Display-Semibol... https://assets.ctfassets.net/rz1oowkt5gyp/3KRSiun937K2pXBPYiUwgB/17f578e7699c12924de360e09c018c7c/Charlie_Display-Semibold.woff2 — 26.0 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 0 ms — font-display: swap
AtlassianSans-latin.woff2 woff2 swap
Size 72 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Charlie_Text-Regular.woff2 woff2 swap
Size 25 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Charlie_Display-Bold.woff2 woff2 swap
Size 27 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Charlie_Text-Semibold.w... woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Charlie_Display-Regular... woff2 swap
Size 25 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Charlie_Display-Black.w... woff2 swap
Size 28 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Charlie_Text-Bold.woff2 woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Charlie_Display-Light.w... woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
Charlie_Display-Semibol... woff2 swap
Size 26 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 0 ms
Start 0 ms
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)
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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
1
preload
1
dns-prefetch
—
prefetch
—

2 resource hints configured

Network Waterfall
76 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
94% of JavaScript execution is third-party
First-party Third-party 15102ms · 2072KB · €242/mo
wac-web.prod-east.frontend.public.atl-paas.net
Other
Costly
Execution 10511ms
Transfer 1725 KB
Unused 57%
Monthly Cost €168/mo
Unattributable
Other
Costly
Execution 3067ms
Transfer 0 KB
Monthly Cost €49/mo
Google Tag Manager
Tag Manager
Costly
Execution 548ms
Transfer 187 KB
Unused 39%
Monthly Cost €9/mo
OneTrust
Consent
Essential
Execution 436ms
Transfer 117 KB
Unused 52%
Monthly Cost €7/mo
www.gstatic.com
Other
Costly
Execution 372ms
Transfer 0 KB
Unused 49%
Monthly Cost €6/mo
atl-onetrust-wrapper.atlassian.com
Other
Optional
Execution 106ms
Transfer 33 KB
Monthly Cost €2/mo
OneTrust
Consent
Essential
Execution 63ms
Transfer 10 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • wac-web.prod-east.frontend.public.atl-paas.net adds 10511ms and costs ~€168/month
  • Unattributable adds 3067ms and costs ~€49/month
  • Google Tag Manager adds 548ms and costs ~€9/month
  • www.gstatic.com adds 372ms and costs ~€6/month

94% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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 10511ms 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

57% of wac-web.prod-east.frontend.public.atl-paas.net's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Unattributable takes 3067ms 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

Google Tag Manager takes 548ms 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

52% of OneTrust's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

www.gstatic.com takes 372ms 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

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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