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.
3.39 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.06 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
876 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.150
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.10 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.
11.47 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction3849ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.cio.com/ | 1127ms | 122ms | 24ms | 3rd |
| Unattributable | 564ms | 44ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NN43QC7W | 514ms | 427ms | 74ms | 3rd |
| https://cmpv2.cio.com/unified/wrapperMessagingWithoutDetection.js | 383ms | 293ms | 18ms | 3rd |
| https://cmpv2.cio.com/Notice.8f529.js | 355ms | 290ms | 27ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-NW6DGNR3MQ&cx=c>m=4e64h1 | 197ms | 146ms | 50ms | 3rd |
| https://www.cio.com/_static/??-eJylkNsOgjAMhl/IOg8BvDE+S3cQhmNb1oLy9g4uiCYSE71q8iff178V9wgqeDaehXI2D+h6iK6vrSdhdQ3c2KQhYuJRaEssSCUbmcQ1zZwGmdDrGIhBuqBu25Y24kXLjekMCWUDyIME1VinYQ7ffdjiwwXUUCObvDELacU19ZpcEsl8Usnea2d+hJce/zRYJGbI1K+WAdMIClWzdsvXp85Rhi/deV9V5bEoTruyfQKfC7le | 136ms | 84ms | 24ms | 3rd |
| https://cmpv2.cio.com/unified/4.40.1/usnat.f12613136193900e32e2.bundle.js | 119ms | 89ms | 29ms | 3rd |
| https://www.cio.com/_static/??-eJylzzELwkAMBeA/5DUq2OogDg6duoi459p4ptxdShMU/71FwV27hvc+XuAxuFayUTawGyVS4C44v/bOo5J73yCyB21HHkyhlTRInvLuKmI0Fr0u4HclompRkzWYMcxTToRdIyP9aXz/yXjngMaS56w5SwiRjp/mhZU9R7bnRB7SflVV5bLabctN/wJW3Iqu | 101ms | 9ms | 6ms | 3rd |
| https://www.cio.com/_static/??-eJydj90KwjAMRl/IrOrY5o34LP0JW0bb1SZl7O0t6kCvBCHwQfg4OVFrArtEwSjKeqoBoUDyZaTIitwIMlF2kHSWTTliUWwzJWE1r8nrDXMz80H9j0kZDTnQjncQReuLw3qhzr1g3t7RBIo/SxBozFrws7yryYQBXz7mbMBoRnjuvpVsYVlC/cALMXq0UkG3cD0NQ9923eXYzw9Ah3RJ | 98ms | 77ms | 19ms | 3rd |
Showing top 10 of 14 scripts
DJS BundlesAction20 scripts, 311 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cmpv2.cio.com/Notice.8f529.js | 91 KB | 61 KB (67%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-NW6DGNR3MQ&cx=c>m=4e64h1 | 148 KB | 60 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NN43QC7W | 209 KB | 58 KB (28%) | ✓ | 3rd |
| https://www.cio.com/_static/??-eJydj90KwjAMRl/IrOrY5o34LP0JW0bb1SZl7O0t6kCvBCHwQfg4OVFrArtEwSjKeqoBoUDyZaTIitwIMlF2kHSWTTliUWwzJWE1r8nrDXMz80H9j0kZDTnQjncQReuLw3qhzr1g3t7RBIo/SxBozFrws7yryYQBXz7mbMBoRnjuvpVsYVlC/cALMXq0UkG3cD0NQ9923eXYzw9Ah3RJ | 63 KB | 37 KB (59%) | ✓ | 3rd |
| https://www.cio.com/_static/??-eJylkNsOgjAMhl/IOg8BvDE+S3cQhmNb1oLy9g4uiCYSE71q8iff178V9wgqeDaehXI2D+h6iK6vrSdhdQ3c2KQhYuJRaEssSCUbmcQ1zZwGmdDrGIhBuqBu25Y24kXLjekMCWUDyIME1VinYQ7ffdjiwwXUUCObvDELacU19ZpcEsl8Usnea2d+hJce/zRYJGbI1K+WAdMIClWzdsvXp85Rhi/deV9V5bEoTruyfQKfC7le | 52 KB | 30 KB (57%) | ✓ | 3rd |
| https://macro.adnami.io/macro/gen/adsm.macro.rmb.js | 25 KB | 22 KB (88%) | ✓ | 3rd |
| https://www.cio.com/wp-content/client-mu-plugins/idg-third-party/dist/scripts/index.js?ver=1776355806 | 38 KB | 22 KB (57%) | ✓ | 3rd |
| https://cmpv2.cio.com/unified/4.40.1/usnat.f12613136193900e32e2.bundle.js | 42 KB | 21 KB (52%) | ✓ | 3rd |
| https://cmpv2.cio.com/unified/wrapperMessagingWithoutDetection.js | 42 KB | — | ✓ | 3rd |
| https://www.cio.com/_static/??-eJylzzELwkAMBeA/5DUq2OogDg6duoi459p4ptxdShMU/71FwV27hvc+XuAxuFayUTawGyVS4C44v/bOo5J73yCyB21HHkyhlTRInvLuKmI0Fr0u4HclompRkzWYMcxTToRdIyP9aXz/yXjngMaS56w5SwiRjp/mhZU9R7bnRB7SflVV5bLabctN/wJW3Iqu | 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 InventoryAction61 resources · 1.3 MB · 311 KB savings availableFIX
~310.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 61 resources | 1.3 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.3 MB transferred, 61 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
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization5 images, 0 KB saveablePASS
Set explicit width and height to prevent CLS.
Performance issues directly impact user engagement and conversion rates.
A+Font Loading5 fonts (155 KB)PASS
Web fonts
5
155 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 HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall61 requests over 2692msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.cio.com www.cio.com | Other | 1127ms | 69 KB | — | $19/mo | Costly |
Unattributable Unattributable | Other | 564ms | 0 KB | — | $10/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 514ms | 209 KB | 28% | $9/mo | Costly |
cmpv2.cio.com cmpv2.cio.com | Other | 383ms | 42 KB | — | $7/mo | Costly |
cmpv2.cio.com cmpv2.cio.com | Other | 355ms | 91 KB | 67% | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 197ms | 148 KB | 40% | $3/mo | Optional |
www.cio.com www.cio.com | Other | 136ms | 52 KB | 57% | $2/mo | Optional |
cmpv2.cio.com cmpv2.cio.com | Other | 119ms | 42 KB | 52% | $2/mo | Optional |
www.cio.com www.cio.com | Other | 101ms | 12 KB | — | $2/mo | Optional |
www.cio.com www.cio.com | Other | 98ms | 63 KB | 59% | $2/mo | Optional |
cp.cio.com cp.cio.com | Other | 69ms | 35 KB | — | $1/mo | Optional |
www.cio.com www.cio.com | Other | 65ms | 38 KB | 57% | $1/mo | Optional |
www.cio.com www.cio.com | Other | 63ms | 59 KB | — | $1/mo | Optional |
cmpv2.cio.com cmpv2.cio.com | Other | 58ms | 29 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.cio.com adds 1127ms and costs ~$19/month
- Unattributable adds 564ms and costs ~$10/month
- Google Tag Manager adds 514ms and costs ~$9/month
- cmpv2.cio.com adds 383ms and costs ~$7/month
- cmpv2.cio.com adds 355ms and costs ~$6/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.cio.com takes 1127ms 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 564ms 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 514ms 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.cio.com takes 383ms 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.cio.com takes 355ms 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.cio.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.cio.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 cmpv2.cio.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.cio.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.cio.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