Skip to content
https://www.atlassian.com

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
33
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.

2.28 s

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

5.01 s

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

822 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.048

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

3.77 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.

7.03 s

Page Load Progression

1.3 s
2.6 s
3.9 s
5.2 s
6.6 s
7.9 s
9.2 s
10.5 s
Checks
14
5 PASS 3 REVIEW 4 FIX
F
Page Weight Budget
Action
35.8 MB transferred, 86 requests
FIX
35.8 MB transferred, 86 requests
Critical::
Page weighs 45.4 MB (35.8 MB transferred)
Warning::
JavaScript is 3.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 3.0 MB
Warning::
Images are 1.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.7 MB
Info::
Fonts are 288 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 288 KB
Info::
86 HTTP requests
Info::
Estimated 7.5 g CO2 per page load
35.8 MB / 2.4 MB budget
35.8 MB transferred
86 requests
7.5 g CO2 per page load
Other 30.5 MiB 85%
JavaScript 3.0 MiB 8%
Images 1.7 MiB 5%
Fonts 288.2 KiB 1%
HTML 174.9 KiB 0%
CSS 57.7 KiB 0%
Other 57.7 KiB 0%
Other 4.3 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 (35.7 MiB of 35.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
5042ms total JS execution
FIX
5042ms total JS execution
Warning::
https://wac-web.prod-east.frontend.public.atl-paas...: 2867ms CPU time
Warning::
Unattributable: 823ms CPU time
Warning::
https://cdnssl.clicktale.net/www/bridge-WR110.js: 471ms CPU time
Warning::
https://www.atlassian.com/: 436ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-5RJ...: 154ms CPU time
Warning::
Third-party scripts: 4606ms (91% of total)

Main Thread Breakdown

Script Evaluation 66% Other 19% Style & Layout 8%
ScriptTotalScriptingParse/CompileParty
https://wac-web.prod-east.frontend.public.atl-paas.net/assets/404.e73ccca2.js2867ms2450ms13ms3rd
Unattributable823ms50ms0ms3rd
https://cdnssl.clicktale.net/www/bridge-WR110.js471ms441ms0ms3rd
https://www.atlassian.com/436ms14ms7ms1st
https://www.googletagmanager.com/gtm.js?id=GTM-5RJSBR154ms127ms24ms3rd
https://cdn.cookielaw.org/scripttemplates/202503.2.0/otBannerSdk.js127ms88ms20ms3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js87ms51ms31ms3rd
https://cdnssl.clicktale.net/www33/ptc/ef81b94c-8498-4f12-b358-eb76a000a247.js77ms59ms16ms3rd
F
JS Bundles
Action
26 scripts, 1.7 MB unused
FIX
26 scripts, 1.7 MB unused
Warning::
https://wac-web.prod-east.frontend.public.atl-paas...: 985 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...: 73 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.7 MB
1729 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 KB985 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 KB73 KB (39%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202503.2.0/otBannerSdk.js117 KB61 KB (52%)✓3rd
https://cdnssl.clicktale.net/www33/ptc/ef81b94c-8498-4f12-b358-eb76a000a247.js122 KB50 KB (41%)✓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.42f83ebf.js15 KB—✓3rd
https://www.recaptcha.net/recaptcha/enterprise/webworker.js?hl=en&v=kUYUkUlSyqkjTSMaN2w3RaOh0 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
19 images, 0 KB saveable
REVIEW
19 images, 0 KB saveable
Warning::
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAA... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://dam-cdn.atl.orangelogic.com/AssetLink/b25n... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
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::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://dam-cdn.atl.orangelogic.com/AssetLink/7273... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
19 images 1.7 MB
0 oversized -0 KB
15 legacy format
5 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

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

Performance issues directly impact user engagement and conversion rates.

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
9 fonts (288 KB)
PASS
9 fonts (288 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

288 KB total

Render-blocking

0

of 9

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.3 s LCP 5.0 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/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-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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
86 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
91% of JavaScript execution is third-party
First-party Third-party 4606ms · 2154KB · €74/mo
wac-web.prod-east.frontend.public.atl-paas.net
Other
Costly
Execution 2867ms
Transfer 1725 KB
Unused 57%
Monthly Cost €46/mo
Unattributable
Other
Costly
Execution 823ms
Transfer 0 KB
Monthly Cost €13/mo
cdnssl.clicktale.net
Other
Costly
Execution 471ms
Transfer 3 KB
Monthly Cost €8/mo
Google Tag Manager
Tag Manager
Optional
Execution 154ms
Transfer 187 KB
Unused 39%
Monthly Cost €2/mo
OneTrust
Consent
Essential
Execution 127ms
Transfer 117 KB
Unused 52%
Monthly Cost €2/mo
www.gstatic.com
Other
Optional
Execution 87ms
Transfer 0 KB
Unused 49%
Monthly Cost €1/mo
cdnssl.clicktale.net
Other
Optional
Execution 77ms
Transfer 122 KB
Unused 41%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • wac-web.prod-east.frontend.public.atl-paas.net adds 2867ms and costs ~€46/month
  • Unattributable adds 823ms and costs ~€13/month
  • cdnssl.clicktale.net adds 471ms and costs ~€8/month

91% 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 2867ms 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 823ms 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

cdnssl.clicktale.net takes 471ms 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

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.

Send Feedback