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.
3.56 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
13.67 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.42 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.003
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.82 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.
13.80 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction4619ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://developer.adobe.com/ | 1375ms | 27ms | 4ms | 3rd |
| Unattributable | 738ms | 137ms | 0ms | 3rd |
| https://developer.adobe.com/dev-site-assets/579e4e6714746dfa0bf9.js | 600ms | 428ms | 143ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202501.1.0/otBannerSdk.js | 543ms | 338ms | 120ms | 3rd |
| https://developer.adobe.com/dev-site-assets/65e24a379ffe2cb5e96c.js | 364ms | 358ms | 2ms | 3rd |
| https://developer.adobe.com/dev-site-assets/46dea5da3fcac0f680e4.js | 342ms | 297ms | 3ms | 3rd |
| https://auth.services.adobe.com/imslib/imslib.min.js | 197ms | 183ms | 8ms | 3rd |
| https://assets.adobedtm.com/d4d114c60e50/a0e989131fd5/launch-5dd5dd2177e6.min.js | 187ms | 148ms | 36ms | 3rd |
| https://developer.adobe.com/search-frame | 120ms | 2ms | 1ms | 3rd |
| https://www.adobe.com/etc.clientlibs/globalnav/clientlibs/base/privacy-standalone.js | 84ms | 52ms | 21ms | 3rd |
Showing top 10 of 11 scripts
FJS BundlesAction40 scripts, 528 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://developer.adobe.com/dev-site-assets/579e4e6714746dfa0bf9.js | 424 KB | 303 KB (72%) | ✓ | 3rd |
| https://assets.adobedtm.com/d4d114c60e50/a0e989131fd5/launch-5dd5dd2177e6.min.js | 162 KB | 98 KB (60%) | ✓ | 3rd |
| https://developer.adobe.com/dev-site-assets/a3902d0e94a17a9b8e94.js | 75 KB | 65 KB (87%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202501.1.0/otBannerSdk.js | 113 KB | 62 KB (55%) | ✓ | 3rd |
| https://developer.adobe.com/dev-site-assets/274f8aba0a86abcf4d6d.js | 3 KB | — | ✓ | 3rd |
| https://developer.adobe.com/dev-site-assets/a0159e71413886fc02ab.js | 3 KB | — | ✓ | 3rd |
| https://developer.adobe.com/dev-site-assets/5ed457e89c5ce2ce3632.js | 2 KB | — | ✓ | 3rd |
| https://developer.adobe.com/dev-site-assets/1deb5aa0037c02017802.js | 2 KB | — | ✓ | 3rd |
| https://developer.adobe.com/dev-site-assets/eb7b7eee257069255f1c.js | 5 KB | — | ✓ | 3rd |
| https://developer.adobe.com/dev-site-assets/3c7a7e7e0a2b013abd27.js | 4 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
FPage Weight InventoryAction89 resources · 1.4 MB · 528 KB savings availableFIX
~528.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 89 resources | 1.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.4 MB transferred, 89 requestsREVIEW
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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
AImage Optimization13 images, 0 KB saveablePASS
A+Font Loading6 fonts (182 KB)PASS
Web fonts
6
182 KB total
Render-blocking
0
of 6
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
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall89 requests over 4511msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
developer.adobe.com developer.adobe.com | Other | 1375ms | 92 KB | — | $4/mo | Costly |
Unattributable Unattributable | Other | 738ms | 0 KB | — | $2/mo | Costly |
developer.adobe.com developer.adobe.com | Other | 600ms | 424 KB | 72% | $2/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 543ms | 113 KB | 55% | $2/mo | Essential |
developer.adobe.com developer.adobe.com | Other | 364ms | 2 KB | — | $1/mo | Costly |
developer.adobe.com developer.adobe.com | Other | 342ms | 10 KB | — | $1/mo | Costly |
auth.services.adobe.com auth.services.adobe.com | Other | 197ms | 21 KB | — | $1/mo | Optional |
assets.adobedtm.com assets.adobedtm.com | Other | 187ms | 162 KB | 60% | $1/mo | Optional |
developer.adobe.com developer.adobe.com | Other | 120ms | 79 KB | — | $0/mo | Optional |
www.adobe.com www.adobe.com | Other | 84ms | 13 KB | — | $0/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 69ms | 9 KB | — | $0/mo | Essential |
These scripts may cost more than they're worth
- developer.adobe.com adds 1375ms and costs ~$4/month
- Unattributable adds 738ms and costs ~$2/month
- developer.adobe.com adds 600ms and costs ~$2/month
- developer.adobe.com adds 364ms and costs ~$1/month
- developer.adobe.com adds 342ms and costs ~$1/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
developer.adobe.com takes 1375ms 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 738ms 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
developer.adobe.com takes 600ms 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
72% of developer.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
55% of OneTrust'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
developer.adobe.com takes 364ms 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
developer.adobe.com takes 342ms 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
60% of assets.adobedtm.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