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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
4
REVIEW
3
PASS
8
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
43
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

4.78 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

6.43 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

774 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.111

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

5.26 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.

14.94 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
8 PASS 3 REVIEW 4 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.0 MiB of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
3380ms total JS execution
FIX
3380ms total JS execution
Warning::
https://www.computerworld.com/: 1015ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-NN4...: 488ms CPU time
Warning::
Unattributable: 434ms CPU time
Warning::
https://cmpv2.computerworld.com/Notice.8f529.js: 353ms CPU time
Warning::
https://cmpv2.computerworld.com/unified/wrapperMes...: 326ms CPU time
Warning::
Third-party scripts: 3380ms (100% of total)

Main Thread Breakdown

Script Evaluation 48% Style & Layout 17% Other 16% Script Parsing & Compilation 9% Parse HTML & CSS 5% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.computerworld.com/1015ms147ms29ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NN43QC7W488ms373ms81ms3rd
Unattributable434ms19ms0ms3rd
https://cmpv2.computerworld.com/Notice.8f529.js353ms280ms39ms3rd
https://cmpv2.computerworld.com/unified/wrapperMessagingWithoutDetection.js326ms281ms12ms3rd
https://www.googletagmanager.com/gtag/js?id=G-BYS55606V0&cx=c&gtm=4e64k0h2144ms109ms34ms3rd
https://cmpv2.computerworld.com/unified/4.40.1/usnat.f12613136193900e32e2.bundle.js124ms91ms33ms3rd
https://js-agent.newrelic.com/nr-rum-1.313.1.min.js92ms76ms4ms3rd
https://www.computerworld.com/_static/??-eJylkN0OgjAMRl/IOpVkXBmfpfsRhmMsawF5ewcXRBOJCV41+ZJz+rVijKC7wDaw0N7lAW0P0feVCyScqYBrlwxETDwJ44gF6eQik7inhTOgEgYTO2JQvtOPY0MH8abl2raWhB5BXRTo2nkDS/apwwafvkMDFbLNC7OPNlRzrdmlkOw3leqD8XYnvPb4p8EqsUOm9loGTBNo1PXWLT9/GuNOcokye2uv57KUhZQnWTQvxeTN6g==85ms65ms19ms3rd
https://www.computerworld.com/_static/??-eJydj90KwjAMRl/IrOqguxKfpT9hy2i72qSMvf2KOtArQQh8ED5OTtSawS1JMIlygVpArJBDHSmxIj+CTFQ8ZFNkU55YFLtCWVjNaw5mw9LNfFL/Y3JBSx6M5wNEyYXqsV1o86hYtnd0kdLPEkQaixH8LB9qMmHEl4+9WrCGEZ67byVXWZbYPghCjAGdNNA93i7DoHutz7qfd0B+dEY=84ms68ms14ms3rd

Showing top 10 of 14 scripts

D
Page Weight Inventory
Action
66 resources · 2.0 MB · 289 KB savings available
FIX
66 resources · 2.0 MB · 289 KB savings available
Warning::
Page weight 1.0 MB over 1MB target
Got: 2.0 MB Expected: ≤ 1 MB
Info::
~289 KB of savings available
Warning::
65 third-party resources (100% of weight)
Info::
2 resources over 200KB
66 resources · 2.0 MiB · 65 third-party 1.0 MiB over 1MB target
JavaScript 40% · 817.1 KiB
Font 32% · 668.2 KiB
Image 18% · 376.7 KiB
CSS 5% · 101.3 KiB
Document 4% · 77.9 KiB
Other 1% · 17.9 KiB

~289.4 KiB of savings available

Remove unused JavaScript: 289.4 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Page Weight Budget
Action
2.0 MB transferred, 66 requests
REVIEW
2.0 MB transferred, 66 requests
Info::
Page weighs 5.4 MB (2.0 MB transferred)
Warning::
JavaScript is 817 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 817 KB
Info::
Fonts are 668 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 668 KB
Info::
66 HTTP requests
Info::
Estimated 0.42 g CO2 per page load
2.0 MB / 2.4 MB budget
2.0 MB transferred
66 requests
0.42 g CO2 per page load
JavaScript 816.5 KiB 40%
Fonts 668.2 KiB 32%
Images 373.3 KiB 18%
CSS 101.3 KiB 5%
HTML 77.8 KiB 4%
Other 13.2 KiB 1%
Other 5.1 KiB 0%
Other 3.1 KiB 0%
Other 669 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

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.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

C
JS Bundles
Action
22 scripts, 289 KB unused
REVIEW
22 scripts, 289 KB unused
Warning::
https://cmpv2.computerworld.com/Notice.8f529.js: 61 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-BYS5...: 61 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-NN4...: 58 KB unused (28%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.computerworld.com/_static/??-eJydj90Kw...: 37 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.computerworld.com/_static/??-eJylkN0Og...: 29 KB unused (56%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 289 KB
289 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cmpv2.computerworld.com/Notice.8f529.js91 KB61 KB (67%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-BYS55606V0&cx=c&gtm=4e64k0h2145 KB61 KB (42%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NN43QC7W209 KB58 KB (28%)✓3rd
https://www.computerworld.com/_static/??-eJydj90KwjAMRl/IrOqguxKfpT9hy2i72qSMvf2KOtArQQh8ED5OTtSawS1JMIlygVpArJBDHSmxIj+CTFQ8ZFNkU55YFLtCWVjNaw5mw9LNfFL/Y3JBSx6M5wNEyYXqsV1o86hYtnd0kdLPEkQaixH8LB9qMmHEl4+9WrCGEZ67byVXWZbYPghCjAGdNNA93i7DoHutz7qfd0B+dEY=63 KB37 KB (59%)✓3rd
https://www.computerworld.com/_static/??-eJylkN0OgjAMRl/IOpVkXBmfpfsRhmMsawF5ewcXRBOJCV41+ZJz+rVijKC7wDaw0N7lAW0P0feVCyScqYBrlwxETDwJ44gF6eQik7inhTOgEgYTO2JQvtOPY0MH8abl2raWhB5BXRTo2nkDS/apwwafvkMDFbLNC7OPNlRzrdmlkOw3leqD8XYnvPb4p8EqsUOm9loGTBNo1PXWLT9/GuNOcokye2uv57KUhZQnWTQvxeTN6g==53 KB29 KB (56%)✓3rd
https://macro.adnami.io/macro/gen/adsm.macro.rmb.js25 KB22 KB (88%)✓3rd
https://www.computerworld.com/wp-content/client-mu-plugins/idg-third-party/dist/scripts/index.js?ver=177636606338 KB22 KB (57%)✓3rd
https://cp.computerworld.com/now.js35 KB—✓3rd
https://cmpv2.computerworld.com/mms/v2/get_site_data?hasCsp=true&href=https%3A%2F%2Fwww.computerworld.com%2F&account_id=1461 KB—✓3rd
https://www.computerworld.com/_static/??-eJylzzELwkAMBeA/5DW2gu0iDg5OXUTcc208U66XowmK/96i4K5dw3sfL/DIrpNklAzsRiMpcB+cr7zzqOTeN4jsQbuJsyl0MmZJc95dRYymYtAV/K5EVC2OZC0mDMuUE2HfykR/Gt9/Et45oLGkJWvOEkKkw6d5YWXPke05k/txV9b1tmw266oZXlaliqE=12 KB—✗3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Info::
All images are well-optimized
4 images 373 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
13 fonts (668 KB)
PASS
13 fonts (668 KB)
Info::
13 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

13

668 KB total

Render-blocking

0

of 13

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 4.8 s LCP 6.4 shttps://www.computerworld.com/wp-content/themes/idg-b2b-base-theme/dist/static/assets/fonts/cio/graphik-400.woff2graphik-400.woff2 https://www.computerworld.com/wp-content/themes/idg-b2b-base-theme/dist/static/assets/fonts/cio/graphik-400.woff2 — 38.2 KiB — 6 ms — font-display: swaphttps://www.computerworld.com/wp-content/themes/idg-b2b-base-theme/dist/static/assets/fonts/cio/graphik-500.woff2graphik-500.woff2 https://www.computerworld.com/wp-content/themes/idg-b2b-base-theme/dist/static/assets/fonts/cio/graphik-500.woff2 — 42.2 KiB — 8 ms — font-display: swaphttps://use.typekit.net/af/92b869/00000000000000007735e7d3/30/l?fvd=n5&primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&v=3l https://use.typekit.net/af/92b869/00000000000000007735e7d3/30/l?fvd=n5&primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&v=3 — 19.4 KiB — 18 ms — font-display: swaphttps://use.typekit.net/af/334c28/00000000000000007735e7dc/30/l?fvd=n5&primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&v=3l https://use.typekit.net/af/334c28/00000000000000007735e7dc/30/l?fvd=n5&primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&v=3 — 29.5 KiB — 29 ms — font-display: swaphttps://use.typekit.net/af/18ce07/00000000000000007735e7e6/30/l?fvd=n4&primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&v=3l https://use.typekit.net/af/18ce07/00000000000000007735e7e6/30/l?fvd=n4&primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&v=3 — 19.1 KiB — 24 ms — font-display: swaphttps://use.typekit.net/af/b75561/00000000000000007735e7d9/30/l?fvd=n5&primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&v=3l https://use.typekit.net/af/b75561/00000000000000007735e7d9/30/l?fvd=n5&primer=7fa3915bdafdf03041871920a205bef951d72bf64dd4c4460fb992e3ecc3a862&v=3 — 19.3 KiB — 27 ms — font-display: swaphttps://use.typekit.net/af/5eb48e/00000000000000007735e7d8/30/l?fvd=n4&primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&v=3l https://use.typekit.net/af/5eb48e/00000000000000007735e7d8/30/l?fvd=n4&primer=7cdcb44be4a7db8877ffa5c0007b8dd865b3bbc383831fe2ea177f62257a9191&v=3 — 28.8 KiB — 3 ms — font-display: swaphttps://use.typekit.net/af/f28e6a/00000000000000007735e7dc/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n5&v=3l https://use.typekit.net/af/f28e6a/00000000000000007735e7dc/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n5&v=3 — 82.2 KiB — 24 ms — font-display: swaphttps://use.typekit.net/af/de3451/00000000000000007735e7e6/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n4&v=3l https://use.typekit.net/af/de3451/00000000000000007735e7e6/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n4&v=3 — 81.2 KiB — 17 ms — font-display: swaphttps://use.typekit.net/af/2dd387/00000000000000007735e7d3/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n5&v=3l https://use.typekit.net/af/2dd387/00000000000000007735e7d3/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n5&v=3 — 83.6 KiB — 26 ms — font-display: swaphttps://use.typekit.net/af/cb23cc/00000000000000007735e7d9/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n5&v=3l https://use.typekit.net/af/cb23cc/00000000000000007735e7d9/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n5&v=3 — 82.3 KiB — 28 ms — font-display: swaphttps://use.typekit.net/af/8fd457/00000000000000007735e7d8/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n4&v=3l https://use.typekit.net/af/8fd457/00000000000000007735e7d8/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n4&v=3 — 80.4 KiB — 28 ms — font-display: swaphttps://use.typekit.net/af/e34097/00000000000000007735bc72/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n4&v=3l https://use.typekit.net/af/e34097/00000000000000007735bc72/31/l?primer=f592e0a4b9356877842506ce344308576437e4f677d7c9b78ca2162e6cad991a&fvd=n4&v=3 — 62.0 KiB — 27 ms — font-display: swap
graphik-400.woff2 woff2 swap
Size 38 KB
Load time 6 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
graphik-500.woff2 woff2 swap
Size 42 KB
Load time 8 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 19 KB
Load time 18 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 29 KB
Load time 29 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 19 KB
Load time 24 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 19 KB
Load time 27 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 29 KB
Load time 3 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 82 KB
Load time 24 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 81 KB
Load time 17 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 84 KB
Load time 26 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 82 KB
Load time 28 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 80 KB
Load time 28 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
l woff2 swap
Size 62 KB
Load time 27 ms
Start 1.5 s
Risk FOUT — text flashes from fallback to web font
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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
66 requests over 2624ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 4.8 s LCP 6.4 shttps://computerworld.com// https://computerworld.com/ — 301 — 153 B — 131 ms — h2https://www.computerworld.com/www.computerworld.com/ https://www.computerworld.com/ — 200 — 75.5 KiB — 1.0 s — h2https://www.computerworld.com/wp-includes/css/dist/block-library/style.min.css?ver=6.8.5www.computerworld.com/wp-includes/c... https://www.computerworld.com/wp-includes/css/dist/block-library/style.min.css?ver=6.8.5 — 200 — 15.5 KiB — 25 ms — h2https://www.computerworld.com/wp-content/mu-plugins/search/elasticpress/dist/css/related-posts-block-styles.min.css?ver=4.2.2www.computerworld.com/wp-content/mu... https://www.computerworld.com/wp-content/mu-plugins/search/elasticpress/dist/css/related-posts-block-styles.min.css?ver=4.2.2 — 200 — 498 B — 16 ms — h2https://www.computerworld.com/wp-content/client-mu-plugins/idg-editions/dist/styles/main.css?ver=0.1.0www.computerworld.com/wp-content/cl... 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h3https://cmpv2.computerworld.com/index.html?hasCsp=true&message_id=1467382&consentUUID=null&consent_origin=https%3A%2F%2Fcmpv2.computerworld.com%2Fconsent%2Ftcfv2&preload_message=true&version=v1cmpv2.computerworld.com/index.html?... https://cmpv2.computerworld.com/index.html?hasCsp=true&message_id=1467382&consentUUID=null&consent_origin=https%3A%2F%2Fcmpv2.computerworld.com%2Fconsent%2Ftcfv2&preload_message=true&version=v1 — 200 — 2.3 KiB — 5 ms — h2https://cmpv2.computerworld.com/Notice.30929.csscmpv2.computerworld.com/Notice.3092... https://cmpv2.computerworld.com/Notice.30929.css — 200 — 6.7 KiB — 10 ms — h2https://cmpv2.computerworld.com/polyfills.01516.jscmpv2.computerworld.com/polyfills.0... https://cmpv2.computerworld.com/polyfills.01516.js — 200 — 2.3 KiB — 8 ms — h2https://cmpv2.computerworld.com/Notice.8f529.jscmpv2.computerworld.com/Notice.8f52... https://cmpv2.computerworld.com/Notice.8f529.js — 200 — 91.3 KiB — 20 ms — h2https://cmpv2.computerworld.com/consent/tcfv2/vendor-list/categories?siteId=3919cmpv2.computerworld.com/consent/tcf... https://cmpv2.computerworld.com/consent/tcfv2/vendor-list/categories?siteId=3919 — 200 — 1.3 KiB — 121 ms — h2https://bam.nr-data.net/events/1/NRJS-33ee5661ee99207a676?a=721291048&v=1.313.1&to=MVBUYksCDEdWUUVRWAgad1VNCg1aGFpeVVIWVFFT&rst=2099&ck=0&s=853642f3dbcb1998&ref=https://www.computerworld.com/&ptid=353e0591234f3537bam.nr-data.net/events/1/NRJS-33ee5... https://bam.nr-data.net/events/1/NRJS-33ee5661ee99207a676?a=721291048&v=1.313.1&to=MVBUYksCDEdWUUVRWAgad1VNCg1aGFpeVVIWVFFT&rst=2099&ck=0&s=853642f3dbcb1998&ref=https://www.computerworld.com/&ptid=353e0591234f3537 — 200 — 423 B — 525 ms — http/1.1https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600&display=swapfonts.googleapis.com/css2?family=Mo... https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600&display=swap — 200 — 1.0 KiB — 98 ms — h2https://cmpv2.computerworld.com/consent/tcfv2/vendor-list/categories?siteId=3919&consentLanguage=encmpv2.computerworld.com/consent/tcf... https://cmpv2.computerworld.com/consent/tcfv2/vendor-list/categories?siteId=3919&consentLanguage=en — 200 — 1.3 KiB — 74 ms — h2https://www.computerworld.com/wp-content/uploads/2025/06/Logo-CW-black.pngwww.computerworld.com/wp-content/up... https://www.computerworld.com/wp-content/uploads/2025/06/Logo-CW-black.png — 200 — 5.6 KiB — 3 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 3380ms · 864KB · $58/mo
www.computerworld.com
Other
Costly
Execution 1015ms
Transfer 76 KB
Monthly Cost $18/mo
Google Tag Manager
Tag Manager
Costly
Execution 488ms
Transfer 209 KB
Unused 28%
Monthly Cost $8/mo
Unattributable
Other
Costly
Execution 434ms
Transfer 0 KB
Monthly Cost $7/mo
cmpv2.computerworld.com
Other
Costly
Execution 353ms
Transfer 91 KB
Unused 67%
Monthly Cost $6/mo
cmpv2.computerworld.com
Other
Costly
Execution 326ms
Transfer 42 KB
Monthly Cost $6/mo
Google Tag Manager
Tag Manager
Optional
Execution 144ms
Transfer 145 KB
Unused 42%
Monthly Cost $2/mo
cmpv2.computerworld.com
Other
Optional
Execution 124ms
Transfer 33 KB
Monthly Cost $2/mo
js-agent.newrelic.com
Other
Optional
Execution 92ms
Transfer 19 KB
Monthly Cost $2/mo
www.computerworld.com
Other
Optional
Execution 85ms
Transfer 53 KB
Unused 56%
Monthly Cost $1/mo
www.computerworld.com
Other
Optional
Execution 84ms
Transfer 63 KB
Unused 59%
Monthly Cost $1/mo
www.computerworld.com
Other
Optional
Execution 77ms
Transfer 12 KB
Monthly Cost $1/mo
www.computerworld.com
Other
Optional
Execution 56ms
Transfer 38 KB
Unused 57%
Monthly Cost $1/mo
www.computerworld.com
Other
Optional
Execution 53ms
Transfer 59 KB
Monthly Cost $1/mo
cmpv2.computerworld.com
Other
Optional
Execution 51ms
Transfer 24 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.computerworld.com adds 1015ms and costs ~$18/month
  • Google Tag Manager adds 488ms and costs ~$8/month
  • Unattributable adds 434ms and costs ~$7/month
  • cmpv2.computerworld.com adds 353ms and costs ~$6/month
  • cmpv2.computerworld.com adds 326ms and costs ~$6/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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.computerworld.com takes 1015ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 488ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 434ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

cmpv2.computerworld.com takes 353ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

67% of cmpv2.computerworld.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

cmpv2.computerworld.com takes 326ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

56% of www.computerworld.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

59% of www.computerworld.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

57% of www.computerworld.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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