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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
3
REVIEW
5
PASS
7
INFO
2

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

Mobile Desktop
65
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.
81
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.

2.61 s

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

4.58 s

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

569 ms

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

0.000

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

3.30 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.

11.89 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
7 PASS 5 REVIEW 3 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 (1.4 MiB of 1.4 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2892ms total JS execution
FIX
2892ms total JS execution
Warning::
https://www.computer.org/: 697ms CPU time
Warning::
https://www.computer.org/_next/static/chunks/7023-...: 600ms CPU time
Warning::
https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-a...: 403ms CPU time
Warning::
Unattributable: 337ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-N778...: 230ms CPU time
Warning::
Third-party scripts: 2892ms (100% of total)

Main Thread Breakdown

Script Evaluation 56% Other 19% Style & Layout 9% Script Parsing & Compilation 8% Parse HTML & CSS 4% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.computer.org/697ms55ms45ms3rd
https://www.computer.org/_next/static/chunks/7023-de08e90fe6034213.js600ms471ms23ms3rd
https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/osano.js403ms352ms10ms3rd
Unattributable337ms28ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-N7782B0VN4&cx=c&gtm=4e64h1230ms192ms36ms3rd
https://www.computer.org/_next/static/chunks/fd9d1056-4895dfff47e87bd7.js204ms170ms12ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PPQ37HW189ms149ms32ms3rd
https://cdn.feathr.co/js/boomerang.min.js125ms106ms9ms3rd
https://connect.facebook.net/en_US/fbevents.js107ms83ms24ms3rd
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.

B
Page Weight Budget
1.4 MB transferred, 80 requests
REVIEW
1.4 MB transferred, 80 requests
Info::
Page weighs 4.0 MB (1.4 MB transferred)
Warning::
JavaScript is 814 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 814 KB
Info::
80 HTTP requests
Info::
Estimated 0.28 g CO2 per page load
1.4 MB / 2.4 MB budget
1.4 MB transferred
80 requests
0.28 g CO2 per page load
JavaScript 814.0 KiB 59%
Other 155.6 KiB 11%
Fonts 130.7 KiB 9%
Images 127.4 KiB 9%
HTML 120.8 KiB 9%
CSS 18.1 KiB 1%
Other 10.6 KiB 1%
Other 6.1 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Under budget

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

B
Image Optimization
17 images, 0 KB saveable
REVIEW
17 images, 0 KB saveable
Info::
All images are well-optimized
17 images 127 KB
0 oversized -0 KB
4 legacy format
0 missing dimensions CLS risk
C
JS Bundles
Action
38 scripts, 180 KB unused
REVIEW
38 scripts, 180 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-N778...: 73 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PPQ...: 63 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/fbevents.js: 44 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 180 KB
180 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-N7782B0VN4&cx=c&gtm=4e64h1172 KB73 KB (42%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PPQ37HW136 KB63 KB (47%)✓3rd
https://connect.facebook.net/en_US/fbevents.js97 KB44 KB (46%)✓3rd
https://www.computer.org/_next/static/chunks/2333-5f3c5a6d88aaf67e.js16 KB—✓3rd
https://www.computer.org/_next/static/chunks/app/layout-3db7c002fe58c697.js14 KB—✓3rd
https://www.computer.org/_next/static/chunks/main-app-70fb7231193511ce.js1 KB—✓3rd
https://www.computer.org/_next/static/chunks/app/global-error-70363a7844e983ef.js3 KB—✓3rd
https://www.computer.org/_next/static/chunks/998-4bc3ad25ed52586d.js10 KB—✓3rd
https://www.computer.org/_next/static/chunks/6164-9f27c05a522a8294.js7 KB—✓3rd
https://www.computer.org/_next/static/chunks/231-5d380eb9d70f48bb.js7 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

C
Page Weight Inventory
Action
80 resources · 1.4 MB · 180 KB savings available
REVIEW
80 resources · 1.4 MB · 180 KB savings available
Warning::
Page weight 359 KB over 1MB target
Got: 1.4 MB Expected: ≤ 1 MB
Info::
~180 KB of savings available
Warning::
79 third-party resources (100% of weight)
80 resources · 1.4 MiB · 79 third-party 359.4 KiB over 1MB target
JavaScript 59% · 814.0 KiB
Other 12% · 163.0 KiB
Image 10% · 136.8 KiB
Font 9% · 130.7 KiB
Document 9% · 120.8 KiB
CSS 1% · 18.1 KiB

~180.3 KiB of savings available

Remove unused JavaScript: 180.3 KiB
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+
Font Loading
4 fonts (131 KB)
PASS
4 fonts (131 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

131 KB total

Render-blocking

0

of 4

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 FCP 2.6 s LCP 4.6 shttps://www.computer.org/_next/static/media/02743a8d10a3d186-s.p.woff202743a8d10a3d186-s.p.woff2 https://www.computer.org/_next/static/media/02743a8d10a3d186-s.p.woff2 — 41.2 KiB — 37 ms — font-display: swaphttps://www.computer.org/_next/static/media/1e41be92c43b3255-s.p.woff21e41be92c43b3255-s.p.woff2 https://www.computer.org/_next/static/media/1e41be92c43b3255-s.p.woff2 — 37.0 KiB — 29 ms — font-display: swaphttps://www.computer.org/_next/static/media/b3f718d64f9a6dea-s.woff2b3f718d64f9a6dea-s.woff2 https://www.computer.org/_next/static/media/b3f718d64f9a6dea-s.woff2 — 16.7 KiB — 21 ms — font-display: swaphttps://www.computer.org/_next/static/media/970d71e7dcbc144d-s.woff2970d71e7dcbc144d-s.woff2 https://www.computer.org/_next/static/media/970d71e7dcbc144d-s.woff2 — 35.8 KiB — 20 ms — font-display: swap
02743a8d10a3d186-s.p.woff2 woff2 swap
Size 41 KB
Load time 37 ms
Start 374 ms
Risk FOUT — text flashes from fallback to web font
1e41be92c43b3255-s.p.woff2 woff2 swap
Size 37 KB
Load time 29 ms
Start 374 ms
Risk FOUT — text flashes from fallback to web font
b3f718d64f9a6dea-s.woff2 woff2 swap
Size 17 KB
Load time 21 ms
Start 483 ms
Risk FOUT — text flashes from fallback to web font
970d71e7dcbc144d-s.woff2 woff2 swap
Size 36 KB
Load time 20 ms
Start 559 ms
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
80 requests over 2002ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.6 s LCP 4.6 shttps://computer.org// https://computer.org/ — 302 — 129 B — 292 ms — http/1.0https://www.computer.org/www.computer.org/ https://www.computer.org/ — 200 — 120.8 KiB — 104 ms — h2https://www.computer.org/_next/static/media/02743a8d10a3d186-s.p.woff2www.computer.org/_next/static/media... https://www.computer.org/_next/static/media/02743a8d10a3d186-s.p.woff2 — 200 — 41.2 KiB — 37 ms — h2https://www.computer.org/_next/static/media/1e41be92c43b3255-s.p.woff2www.computer.org/_next/static/media... https://www.computer.org/_next/static/media/1e41be92c43b3255-s.p.woff2 — 200 — 37.0 KiB — 29 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-media%2F2023%2F05%2F25093946%2Fhero-jobs-1920x424-1.jpg&w=750&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-media%2F2023%2F05%2F25093946%2Fhero-jobs-1920x424-1.jpg&w=750&q=75 — 200 — 9.0 KiB — 31 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-content%2Fuploads%2F2026%2F03%2F2026-80th-800x521-1.jpg&w=750&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-content%2Fuploads%2F2026%2F03%2F2026-80th-800x521-1.jpg&w=750&q=75 — 200 — 14.5 KiB — 366 ms — h2https://www.computer.org/_next/static/css/2640df50022dd0d8.csswww.computer.org/_next/static/css/2... https://www.computer.org/_next/static/css/2640df50022dd0d8.css — 200 — 15.5 KiB — 32 ms — h2https://www.computer.org/_next/static/css/a77c76e42deae623.csswww.computer.org/_next/static/css/a... https://www.computer.org/_next/static/css/a77c76e42deae623.css — 200 — 2.7 KiB — 29 ms — h2https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/osano.jscmp.osano.com/AzyzptTmRlqVd2LRf/dc1... https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/osano.js — 200 — 39.4 KiB — 322 ms — h3https://www.googletagmanager.com/gtm.js?id=GTM-PPQ37HWwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-PPQ37HW — 200 — 136.1 KiB — 158 ms — h2https://www.computer.org/_next/static/chunks/webpack-3077ecc363fa9ad6.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/webpack-3077ecc363fa9ad6.js — 200 — 2.3 KiB — 31 ms — h2https://www.computer.org/_next/static/chunks/fd9d1056-4895dfff47e87bd7.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/fd9d1056-4895dfff47e87bd7.js — 200 — 52.9 KiB — 52 ms — h2https://www.computer.org/_next/static/chunks/7023-de08e90fe6034213.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/7023-de08e90fe6034213.js — 200 — 31.3 KiB — 46 ms — h2https://www.computer.org/_next/static/chunks/main-app-70fb7231193511ce.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/main-app-70fb7231193511ce.js — 200 — 872 B — 35 ms — h2https://www.computer.org/_next/static/chunks/app/global-error-70363a7844e983ef.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/app/global-error-70363a7844e983ef.js — 200 — 2.8 KiB — 36 ms — h2https://www.computer.org/_next/static/chunks/998-4bc3ad25ed52586d.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/998-4bc3ad25ed52586d.js — 200 — 9.9 KiB — 37 ms — h2https://www.computer.org/_next/static/chunks/6164-9f27c05a522a8294.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/6164-9f27c05a522a8294.js — 200 — 6.9 KiB — 36 ms — h2https://www.computer.org/_next/static/chunks/231-5d380eb9d70f48bb.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/231-5d380eb9d70f48bb.js — 200 — 7.0 KiB — 38 ms — h2https://www.computer.org/_next/static/chunks/5167-fe28a2f8c0c393ad.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/5167-fe28a2f8c0c393ad.js — 200 — 2.9 KiB — 41 ms — h2https://www.computer.org/_next/static/chunks/3463-7ae8e8a4a0fd5648.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/3463-7ae8e8a4a0fd5648.js — 200 — 10.7 KiB — 40 ms — h2https://www.computer.org/_next/static/chunks/8726-9ed9fbf3ad12935d.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/8726-9ed9fbf3ad12935d.js — 200 — 5.6 KiB — 44 ms — h2https://www.computer.org/_next/static/chunks/6079-85577cb98b32ed69.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/6079-85577cb98b32ed69.js — 200 — 22.4 KiB — 50 ms — h2https://www.computer.org/_next/static/chunks/5223-3dd61149aa470874.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/5223-3dd61149aa470874.js — 200 — 2.8 KiB — 46 ms — h2https://www.computer.org/_next/static/chunks/6422-0fd1a6fbd9f71cb2.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/6422-0fd1a6fbd9f71cb2.js — 200 — 9.5 KiB — 47 ms — h2https://www.computer.org/_next/static/chunks/2472-502b1b4b574e8f79.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/2472-502b1b4b574e8f79.js — 200 — 2.4 KiB — 49 ms — h2https://www.computer.org/_next/static/chunks/1026-ad41baf4a33f885d.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/1026-ad41baf4a33f885d.js — 200 — 12.7 KiB — 53 ms — h2https://www.computer.org/_next/static/chunks/2333-5f3c5a6d88aaf67e.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/2333-5f3c5a6d88aaf67e.js — 200 — 15.8 KiB — 55 ms — h2https://www.computer.org/_next/static/chunks/app/%5B...url%5D/page-988957c247cb5788.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/app/%5B...url%5D/page-988957c247cb5788.js — 200 — 10.0 KiB — 51 ms — h2https://www.computer.org/_next/static/chunks/app/layout-3db7c002fe58c697.jswww.computer.org/_next/static/chunk... https://www.computer.org/_next/static/chunks/app/layout-3db7c002fe58c697.js — 200 — 14.0 KiB — 55 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-content%2Fuploads%2F2024%2F11%2Ffacebook_social_icon.png&w=48&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-content%2Fuploads%2F2024%2F11%2Ffacebook_social_icon.png&w=48&q=75 — 200 — 1.7 KiB — 276 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.6 s LCP 4.6 shttps://computer.org// https://computer.org/ — 302 — 129 B — 292 ms — http/1.0https://www.computer.org/www.computer.org/ https://www.computer.org/ — 200 — 120.8 KiB — 104 ms — h2https://www.computer.org/_next/static/media/02743a8d10a3d186-s.p.woff2www.computer.org/_next/static/media... https://www.computer.org/_next/static/media/02743a8d10a3d186-s.p.woff2 — 200 — 41.2 KiB — 37 ms — h2https://www.computer.org/_next/static/media/1e41be92c43b3255-s.p.woff2www.computer.org/_next/static/media... https://www.computer.org/_next/static/media/1e41be92c43b3255-s.p.woff2 — 200 — 37.0 KiB — 29 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-media%2F2023%2F05%2F25093946%2Fhero-jobs-1920x424-1.jpg&w=750&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-media%2F2023%2F05%2F25093946%2Fhero-jobs-1920x424-1.jpg&w=750&q=75 — 200 — 9.0 KiB — 31 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151 ms — h2https://polo.feathr.co/v1/accounts/5cdda43ba3a493000bf82f7f/pixel.js?pk=feathrpolo.feathr.co/v1/accounts/5cdda43b... https://polo.feathr.co/v1/accounts/5cdda43ba3a493000bf82f7f/pixel.js?pk=feathr — 200 — 326 B — 249 ms — h2https://ieeecs-media.computer.org/wp-media/2018/04/27230615/cs-favicon-512x512.pngieeecs-media.computer.org/wp-media/... https://ieeecs-media.computer.org/wp-media/2018/04/27230615/cs-favicon-512x512.png — 200 — 9.4 KiB — 549 ms — h2https://match.adsrvr.org/track/cmf/generic?gdpr=0&ttd_passthrough=a_id%3D5cdda43ba3a493000bf82f7f&ttd_pid=6fgi4r1&ttd_puid=69e8145afa8da5faf5fb195c&ttd_tpi=1match.adsrvr.org/track/cmf/generic?... https://match.adsrvr.org/track/cmf/generic?gdpr=0&ttd_passthrough=a_id%3D5cdda43ba3a493000bf82f7f&ttd_pid=6fgi4r1&ttd_puid=69e8145afa8da5faf5fb195c&ttd_tpi=1 — 200 — 149 B — 124 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 2892ms · 691KB · $38/mo
www.computer.org
Other
Costly
Execution 697ms
Transfer 121 KB
Monthly Cost $9/mo
www.computer.org
Other
Costly
Execution 600ms
Transfer 31 KB
Monthly Cost $8/mo
cmp.osano.com
Other
Costly
Execution 403ms
Transfer 39 KB
Monthly Cost $5/mo
Unattributable
Other
Costly
Execution 337ms
Transfer 0 KB
Monthly Cost $4/mo
Google Tag Manager
Tag Manager
Costly
Execution 230ms
Transfer 172 KB
Unused 42%
Monthly Cost $3/mo
www.computer.org
Other
Costly
Execution 204ms
Transfer 53 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 189ms
Transfer 136 KB
Unused 47%
Monthly Cost $3/mo
cdn.feathr.co
Other
Optional
Execution 125ms
Transfer 42 KB
Monthly Cost $2/mo
Facebook Pixel
Advertising
Optional
Execution 107ms
Transfer 97 KB
Unused 46%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.computer.org adds 697ms and costs ~$9/month
  • www.computer.org adds 600ms and costs ~$8/month
  • cmp.osano.com adds 403ms and costs ~$5/month
  • Unattributable adds 337ms and costs ~$4/month
  • Google Tag Manager adds 230ms and costs ~$3/month
  • www.computer.org adds 204ms and costs ~$3/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.computer.org takes 697ms 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

www.computer.org takes 600ms 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

cmp.osano.com takes 403ms 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 337ms 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 230ms 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

www.computer.org takes 204ms 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

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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