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.
1.02 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.74 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1 ms
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.
1.71 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.
1.75 s
Page Load Progression
FPage Weight BudgetAction4.3 MB transferred, 131 requestsFIX
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DPage Weight InventoryAction131 resources · 4.3 MB · 93 KB savings availableFIX
~93.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 131 resources | 4.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction22 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
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
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
CJS Execution CostAction1091ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://business.adobe.com/products/commerce.html | 354ms | 6ms | 1ms | 3rd |
| Unattributable | 329ms | 82ms | 0ms | 3rd |
| https://business.adobe.com/libs/blocks/global-navigation/utilities/utilities.js | 130ms | 97ms | 0ms | 3rd |
| https://business.adobe.com/libs/utils/decorate.js | 119ms | 52ms | 1ms | 3rd |
| https://business.adobe.com/marketingtech/d4d114c60e50/a0e989131fd5/launch-5dd5dd2177e6.min.js | 98ms | 79ms | 17ms | 3rd |
| https://business.adobe.com/libs/utils/utils.js | 61ms | 45ms | 3ms | 3rd |
BJS Bundles53 scripts, 93 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://business.adobe.com/marketingtech/d4d114c60e50/a0e989131fd5/launch-5dd5dd2177e6.min.js | 164 KB | 93 KB (57%) | ✓ | 3rd |
| https://business.adobe.com/scripts/scripts.js | 4 KB | — | ✓ | 3rd |
| https://business.adobe.com/libs/utils/utils.js | 26 KB | — | ✗ | 3rd |
| https://business.adobe.com/libs/utils/decorate.js | 7 KB | — | ✓ | 3rd |
| https://business.adobe.com/akam/13/2668dd73 | 9 KB | — | ✓ | 3rd |
| https://business.adobe.com/libs/martech/helpers.js | 12 KB | — | ✗ | 3rd |
| https://business.adobe.com/libs/deps/imslib.min.js | 20 KB | — | ✓ | 3rd |
| https://business.adobe.com/libs/martech/martech.js | 3 KB | — | ✓ | 3rd |
| https://business.adobe.com/libs/features/personalization/personalization.js | 16 KB | — | ✗ | 3rd |
| https://business.adobe.com/marketingtech/main.standard.min.js | 2 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
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 Loading2 fonts (124 KB)PASS
Web fonts
2
124 KB total
Render-blocking
0
of 2
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 HintsNo optimization neededPASS
Network Waterfall131 requests over 4442msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
business.adobe.com business.adobe.com | Other | 354ms | 15 KB | — | $5/mo | Costly |
Unattributable Unattributable | Other | 329ms | 0 KB | — | $4/mo | Costly |
business.adobe.com business.adobe.com | Other | 130ms | 13 KB | — | $2/mo | Optional |
business.adobe.com business.adobe.com | Other | 119ms | 7 KB | — | $2/mo | Optional |
business.adobe.com business.adobe.com | Other | 98ms | 164 KB | 57% | $1/mo | Optional |
business.adobe.com business.adobe.com | Other | 61ms | 26 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- business.adobe.com adds 354ms and costs ~$5/month
- Unattributable adds 329ms 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
business.adobe.com takes 354ms 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 329ms 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
57% of business.adobe.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