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.
3.73 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.08 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
680 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.122
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.01 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.
12.33 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2877ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.infoworld.com/ | 817ms | 147ms | 22ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NN43QC7W | 462ms | 379ms | 70ms | 3rd |
| Unattributable | 363ms | 12ms | 0ms | 3rd |
| https://cmpv2.infoworld.com/Notice.8f529.js | 344ms | 274ms | 34ms | 3rd |
| https://cmpv2.infoworld.com/unified/wrapperMessagingWithoutDetection.js | 204ms | 158ms | 10ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YF8BFFCBPC&cx=c>m=4e64h1h1 | 201ms | 170ms | 29ms | 3rd |
| https://cmpv2.infoworld.com/unified/4.40.1/usnat.f12613136193900e32e2.bundle.js | 115ms | 83ms | 32ms | 3rd |
| https://www.infoworld.com/_static/??-eJyl0NEKwjAMBdAfMlYddE/it7RN3Tq7tjSp07+37mEoOAR9CgTuySViSmBiYBtYGO/qgLFA8qVzgYTDDrh3GSGpzHeBjliQyS4xiXOecwg6q4ApEoP20Vy2A23EC8u9HW21JtAHDaZ3HmHevXNqUDcfFUKn2NaD1aM1qtZ6WlqR/UTpEtDbH8NLj38aLIi91tSq8u0lKdXkaTzu21Y2Uu5kMzwAoUif7w== | 88ms | 61ms | 16ms | 3rd |
| https://www.infoworld.com/_static/??-eJydj90KwjAMRl/IrOqguxKfpT9hy2i72qSMvf2KOtArQQh8ED5OTtSawS1JMIlygVpArJBDHSmxIj+CTFQ8ZFNkU55YFLtCWVjNaw5mw9LNfFL/Y3JBSx6M5wNEyYXqsV1o86hYtnd0kdLPEkQaixH8LB9qMmHEl4+9WrCGEZ67byVXWZbYPghCjAGdNNA93i7DoHutz7qfd0B+dEY= | 81ms | 66ms | 14ms | 3rd |
| https://cp.infoworld.com/now.js | 81ms | 67ms | 7ms | 3rd |
Showing top 10 of 12 scripts
DJS BundlesAction20 scripts, 305 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cmpv2.infoworld.com/Notice.8f529.js | 91 KB | 61 KB (67%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YF8BFFCBPC&cx=c>m=4e64h1h1 | 147 KB | 60 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NN43QC7W | 209 KB | 58 KB (28%) | ✓ | 3rd |
| https://www.infoworld.com/_static/??-eJydj90KwjAMRl/IrOqguxKfpT9hy2i72qSMvf2KOtArQQh8ED5OTtSawS1JMIlygVpArJBDHSmxIj+CTFQ8ZFNkU55YFLtCWVjNaw5mw9LNfFL/Y3JBSx6M5wNEyYXqsV1o86hYtnd0kdLPEkQaixH8LB9qMmHEl4+9WrCGEZ67byVXWZbYPghCjAGdNNA93i7DoHutz7qfd0B+dEY= | 63 KB | 37 KB (59%) | ✓ | 3rd |
| https://www.infoworld.com/_static/??-eJyl0NEKwjAMBdAfMlYddE/it7RN3Tq7tjSp07+37mEoOAR9CgTuySViSmBiYBtYGO/qgLFA8qVzgYTDDrh3GSGpzHeBjliQyS4xiXOecwg6q4ApEoP20Vy2A23EC8u9HW21JtAHDaZ3HmHevXNqUDcfFUKn2NaD1aM1qtZ6WlqR/UTpEtDbH8NLj38aLIi91tSq8u0lKdXkaTzu21Y2Uu5kMzwAoUif7w== | 42 KB | 23 KB (56%) | ✓ | 3rd |
| https://macro.adnami.io/macro/gen/adsm.macro.rmb.js | 25 KB | 22 KB (88%) | ✓ | 3rd |
| https://www.infoworld.com/wp-content/client-mu-plugins/idg-third-party/dist/scripts/index.js?ver=1776366063 | 38 KB | 22 KB (57%) | ✓ | 3rd |
| https://cmpv2.infoworld.com/unified/4.40.1/usnat.f12613136193900e32e2.bundle.js | 42 KB | 21 KB (51%) | ✓ | 3rd |
| https://cmpv2.infoworld.com/unified/wrapperMessagingWithoutDetection.js | 42 KB | — | ✓ | 3rd |
| https://www.infoworld.com/_static/??-eJylzzELwkAMBeA/5DW2gu0iDg5OXUTcc208U66XowmK/96i4K5dw3sfL/DIrpNklAzsRiMpcB+cr7zzqOTeN4jsQbuJsyl0MmZJc95dRYymYtAV/K5EVC2OZC0mDMuUE2HfykR/Gt9/Et45oLGkJWvOEkKkw6d5YWXPke05k/txV9b1tmw266oZXlaliqE= | 12 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
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
DPage Weight InventoryAction59 resources · 1.6 MB · 305 KB savings availableFIX
~305.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 59 resources | 1.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.6 MB transferred, 59 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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization4 images, 0 KB saveablePASS
A+Font Loading5 fonts (403 KB)PASS
Web fonts
5
403 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)
Fixing the unchecked items could save ~130 KB and ~260 ms
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 Waterfall59 requests over 2154msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.infoworld.com www.infoworld.com | Other | 817ms | 62 KB | — | $14/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 462ms | 209 KB | 28% | $8/mo | Costly |
Unattributable Unattributable | Other | 363ms | 0 KB | — | $6/mo | Costly |
cmpv2.infoworld.com cmpv2.infoworld.com | Other | 344ms | 91 KB | 67% | $6/mo | Costly |
cmpv2.infoworld.com cmpv2.infoworld.com | Other | 204ms | 42 KB | — | $4/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 201ms | 147 KB | 41% | $3/mo | Costly |
cmpv2.infoworld.com cmpv2.infoworld.com | Other | 115ms | 42 KB | 51% | $2/mo | Optional |
www.infoworld.com www.infoworld.com | Other | 88ms | 42 KB | 56% | $2/mo | Optional |
www.infoworld.com www.infoworld.com | Other | 81ms | 63 KB | 59% | $1/mo | Optional |
cp.infoworld.com cp.infoworld.com | Other | 81ms | 35 KB | — | $1/mo | Optional |
www.infoworld.com www.infoworld.com | Other | 66ms | 12 KB | — | $1/mo | Optional |
www.infoworld.com www.infoworld.com | Other | 56ms | 38 KB | 57% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.infoworld.com adds 817ms and costs ~$14/month
- Google Tag Manager adds 462ms and costs ~$8/month
- Unattributable adds 363ms and costs ~$6/month
- cmpv2.infoworld.com adds 344ms and costs ~$6/month
- cmpv2.infoworld.com adds 204ms and costs ~$4/month
- Google Tag Manager adds 201ms and costs ~$3/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.infoworld.com takes 817ms 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
Google Tag Manager takes 462ms 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 363ms 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
cmpv2.infoworld.com takes 344ms 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
67% of cmpv2.infoworld.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
cmpv2.infoworld.com takes 204ms 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
Google Tag Manager takes 201ms 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
51% of cmpv2.infoworld.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
56% of www.infoworld.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
59% of www.infoworld.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
57% of www.infoworld.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