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.
6.73 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
17.41 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.71 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.021
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
9.47 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.
19.46 s
Page Load Progression
FPage Weight BudgetAction2.8 MB transferred, 148 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
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
FJS Execution CostAction10769ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.analog.com/media/infographic/webflow.js | 1998ms | 954ms | 142ms | 3rd |
| https://www.analog.com/sk7y_M/Uw/oX/VOGa/f4auf5oFtSZUI/ShYOb4Yafu/NWB0Q0Z-JAw/A3NlDl1/5PDYQAg?v=ea4ec602-0d51-a5a5-7040-5747837f170b | 1684ms | 1397ms | 46ms | 3rd |
| Unattributable | 1626ms | 404ms | 0ms | 3rd |
| https://www.analog.com/sk7y_M/Uw/oX/VOGa/f4auf5oFtSZUI/YpYOb4V0kGrzQ8k3/VSVqQ0Z-JAw/GG5nHWR/GCDAB | 1003ms | 893ms | 54ms | 3rd |
| https://assets2.analog.com/cms-assets/js/pages/scripts/common.bundle.js | 773ms | 581ms | 37ms | 3rd |
| https://www.analog.com/en/index.html | 578ms | 153ms | 9ms | 3rd |
| https://assets.adobedtm.com/bc68b7886092/25785b612092/launch-715705770daf.min.js | 555ms | 396ms | 124ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202307.1.0/otBannerSdk.js | 472ms | 259ms | 49ms | 3rd |
| https://assets2.analog.com/cms-assets/js/pages/scripts/analog-vendor.js | 466ms | 260ms | 56ms | 3rd |
| https://assets2.analog.com/header-footer/index.js | 434ms | 295ms | 3ms | 3rd |
Showing top 10 of 19 scripts
FJS BundlesAction45 scripts, 898 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://players.brightcove.net/706011717001/AQ1ZKQZJE_default/index.min.js | 306 KB | 236 KB (77%) | ✓ | 3rd |
| https://assets2.analog.com/cms-assets/js/pages/scripts/common.bundle.js | 124 KB | 105 KB (85%) | ✓ | 3rd |
| https://assets2.analog.com/cms-assets/js/pages/scripts/analog-vendor.js | 148 KB | 94 KB (64%) | ✓ | 3rd |
| https://assets2.analog.com/cms-assets/js/pages/scripts/searchresultspage.bundle.js | 98 KB | 87 KB (89%) | ✓ | 3rd |
| https://assets2.analog.com/cms-assets/js/legacy/scripts/legacy-plugin.bundle.js | 64 KB | 64 KB (100%) | ✓ | 3rd |
| https://assets2.analog.com/header-footer/index.js | 146 KB | 58 KB (40%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202307.1.0/otBannerSdk.js | 98 KB | 50 KB (52%) | ✓ | 3rd |
| https://assets.adobedtm.com/bc68b7886092/25785b612092/launch-715705770daf.min.js | 169 KB | 35 KB (21%) | ✓ | 3rd |
| https://www.analog.com/sk7y_M/Uw/oX/VOGa/f4auf5oFtSZUI/YpYOb4V0kGrzQ8k3/VSVqQ0Z-JAw/GG5nHWR/GCDAB | 173 KB | 33 KB (19%) | ✓ | 3rd |
| https://js.appboycdn.com/web-sdk/6.3/braze.min.js | 64 KB | 33 KB (52%) | ✓ | 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 InventoryAction148 resources · 2.8 MB · 898 KB savings availableFIX
~898.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 148 resources | 2.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction29 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
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 Loading5 fonts (132 KB)PASS
Web fonts
5
132 KB total
Render-blocking
0
of 5
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 Waterfall148 requests over 6620msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.analog.com www.analog.com | Other | 1998ms | 89 KB | — | €22/mo | Costly |
www.analog.com www.analog.com | Other | 1684ms | 157 KB | 19% | €18/mo | Costly |
Unattributable Unattributable | Other | 1626ms | 0 KB | — | €18/mo | Costly |
www.analog.com www.analog.com | Other | 1003ms | 1 KB | 19% | €11/mo | Costly |
assets2.analog.com assets2.analog.com | Other | 773ms | 124 KB | 85% | €8/mo | Costly |
www.analog.com www.analog.com | Other | 578ms | 28 KB | — | €6/mo | Costly |
assets.adobedtm.com assets.adobedtm.com | Other | 555ms | 169 KB | 21% | €6/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 472ms | 98 KB | 52% | €5/mo | Essential |
assets2.analog.com assets2.analog.com | Other | 466ms | 148 KB | 64% | €5/mo | Costly |
assets2.analog.com assets2.analog.com | Other | 434ms | 146 KB | 40% | €5/mo | Costly |
siteintercept.qualtrics.com siteintercept.qualtrics.com | Other | 367ms | 36 KB | 60% | €4/mo | Costly |
players.brightcove.net players.brightcove.net | Other | 350ms | 306 KB | 77% | €4/mo | Costly |
assets2.analog.com assets2.analog.com | Other | 85ms | 57 KB | — | €1/mo | Optional |
assets2.analog.com assets2.analog.com | Other | 79ms | 98 KB | 89% | €1/mo | Optional |
js.appboycdn.com js.appboycdn.com | Other | 64ms | 64 KB | 52% | €1/mo | Optional |
siteintercept.qualtrics.com siteintercept.qualtrics.com | Other | 63ms | 31 KB | 70% | €1/mo | Optional |
assets2.analog.com assets2.analog.com | Other | 60ms | 14 KB | — | €1/mo | Optional |
assets.adobedtm.com assets.adobedtm.com | Other | 56ms | 1 KB | — | €1/mo | Optional |
assets2.analog.com assets2.analog.com | Other | 54ms | 42 KB | 74% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.analog.com adds 1998ms and costs ~€22/month
- www.analog.com adds 1684ms and costs ~€18/month
- Unattributable adds 1626ms and costs ~€18/month
- www.analog.com adds 1003ms and costs ~€11/month
- assets2.analog.com adds 773ms and costs ~€8/month
- www.analog.com adds 578ms and costs ~€6/month
- assets.adobedtm.com adds 555ms and costs ~€6/month
- assets2.analog.com adds 466ms and costs ~€5/month
- assets2.analog.com adds 434ms and costs ~€5/month
- siteintercept.qualtrics.com adds 367ms and costs ~€4/month
- players.brightcove.net adds 350ms 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
www.analog.com takes 1998ms 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.analog.com takes 1684ms 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 1626ms 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.analog.com takes 1003ms 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
assets2.analog.com takes 773ms 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
85% of assets2.analog.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
www.analog.com takes 578ms 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
assets.adobedtm.com takes 555ms 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
52% 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
assets2.analog.com takes 466ms 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
64% of assets2.analog.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
assets2.analog.com takes 434ms 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
siteintercept.qualtrics.com takes 367ms 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 siteintercept.qualtrics.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
players.brightcove.net takes 350ms 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
77% of players.brightcove.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
89% of assets2.analog.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
52% of js.appboycdn.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
70% of siteintercept.qualtrics.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
74% of assets2.analog.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