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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
3
REVIEW
4
PASS
6
INFO
2

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

95
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
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.

972 ms

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

1.25 s

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

18 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.

1.06 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.

2.40 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
15
6 PASS 4 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 (2.0 MiB of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
110 resources · 2.0 MB · 136 KB savings available
FIX
110 resources · 2.0 MB · 136 KB savings available
Warning::
Page weight 1004 KB over 1MB target
Got: 2.0 MB Expected: ≤ 1 MB
Info::
~136 KB of savings available
Warning::
109 third-party resources (100% of weight)
110 resources · 2.0 MiB · 109 third-party 1003.7 KiB over 1MB target
Image 41% · 825.7 KiB
JavaScript 31% · 638.4 KiB
Other 14% · 293.9 KiB
Font 6% · 130.7 KiB
Document 6% · 120.8 KiB
CSS 1% · 18.1 KiB

~136.1 KiB of savings available

Remove unused JavaScript: 136.1 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, 110 requests
REVIEW
2.0 MB transferred, 110 requests
Info::
Page weighs 4.7 MB (2.0 MB transferred)
Warning::
JavaScript is 638 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 638 KB
Warning::
110 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.42 g CO2 per page load
2.0 MB / 2.4 MB budget
2.0 MB transferred
110 requests
0.42 g CO2 per page load
Images 816.4 KiB 40%
JavaScript 638.4 KiB 31%
Other 290.9 KiB 14%
Fonts 130.7 KiB 6%
HTML 120.8 KiB 6%
CSS 18.1 KiB 1%
Other 9.8 KiB 0%
Other 2.6 KiB 0%
Other 0 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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

B
JS Execution Cost
856ms total JS execution
REVIEW
856ms total JS execution
Warning::
https://www.computer.org/: 266ms CPU time
Info::
Unattributable: 148ms CPU time
Info::
https://www.computer.org/_next/static/chunks/7023-...: 128ms CPU time
Info::
https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-a...: 113ms CPU time
Info::
https://www.computer.org/_next/static/chunks/fd9d1...: 72ms CPU time
Warning::
Third-party scripts: 856ms (100% of total)

Main Thread Breakdown

Script Evaluation 51% Other 25% Style & Layout 10% Script Parsing & Compilation 7% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.computer.org/266ms43ms12ms3rd
Unattributable148ms8ms0ms3rd
https://www.computer.org/_next/static/chunks/7023-de08e90fe6034213.js128ms111ms7ms3rd
https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/osano.js113ms98ms3ms3rd
https://www.computer.org/_next/static/chunks/fd9d1056-4895dfff47e87bd7.js72ms47ms6ms3rd
https://www.googletagmanager.com/gtag/js?id=G-N7782B0VN4&cx=c&gtm=4e64h170ms57ms12ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PPQ37HW58ms51ms7ms3rd
B
JS Bundles
29 scripts, 136 KB unused
REVIEW
29 scripts, 136 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.
Info::
Total unused JavaScript: 136 KB
136 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://www.computer.org/_next/static/chunks/5223-3dd61149aa470874.js3 KB3rd
blob:https://www.computer.org/ed1bafa5-a340-47fb-9700-e36c9070cece-0 KB3rd
https://www.computer.org/_next/static/chunks/7023-de08e90fe6034213.js31 KB3rd
https://www.computer.org/_next/static/chunks/main-app-70fb7231193511ce.js1 KB3rd
https://www.computer.org/_next/static/chunks/app/global-error-70363a7844e983ef.js3 KB3rd
https://www.computer.org/_next/static/chunks/998-4bc3ad25ed52586d.js10 KB3rd
https://www.computer.org/_next/static/chunks/6164-9f27c05a522a8294.js7 KB3rd
https://www.computer.org/_next/static/chunks/231-5d380eb9d70f48bb.js7 KB3rd

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
51 images, 0 KB saveable
PASS
51 images, 0 KB saveable
Info::
All images are well-optimized
51 images 816 KB
0 oversized -0 KB
2 legacy format
0 missing dimensions CLS risk
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 500 ms 1.0 s FCP 972 ms LCP 1.2 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 — 33 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 — 37 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 — 29 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 — 24 ms — font-display: swap
02743a8d10a3d186-s.p.woff2 woff2 swap
Size 41 KB
Load time 33 ms
Start 371 ms
Risk FOUT — text flashes from fallback to web font
1e41be92c43b3255-s.p.woff2 woff2 swap
Size 37 KB
Load time 37 ms
Start 371 ms
Risk FOUT — text flashes from fallback to web font
b3f718d64f9a6dea-s.woff2 woff2 swap
Size 17 KB
Load time 29 ms
Start 481 ms
Risk FOUT — text flashes from fallback to web font
970d71e7dcbc144d-s.woff2 woff2 swap
Size 36 KB
Load time 24 ms
Start 594 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
Network Waterfall
110 requests over 3502ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 972 ms LCP 1.2 shttps://computer.org// https://computer.org/ — 302 — 129 B — 305 ms — http/1.0https://www.computer.org/www.computer.org/ https://www.computer.org/ — 200 — 120.8 KiB — 92 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 — 33 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 — 37 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=1920&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=1920&q=75 — 200 — 33.1 KiB — 41 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=1920&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=1920&q=75 — 200 — 15.4 KiB — 367 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 — 15.4 KiB — 53 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 — 2.6 KiB — 38 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 — 69 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 — 167 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 — 34 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 — 68 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 — 31.4 KiB — 61 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 — 864 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 — 59 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 — 35 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 — 37 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 — 40 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 — 38 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 — 55 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 — 64 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 — 37 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 — 46 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 — 58 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 — 60 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 — 56 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 — 62 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 — 62 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=32&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=32&q=75 — 200 — 1.4 KiB — 296 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 972 ms LCP 1.2 shttps://computer.org// https://computer.org/ — 302 — 129 B — 305 ms — http/1.0https://www.computer.org/www.computer.org/ https://www.computer.org/ — 200 — 120.8 KiB — 92 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 — 33 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 — 37 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=1920&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=1920&q=75 — 200 — 33.1 KiB — 41 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=1920&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=1920&q=75 — 200 — 15.4 KiB — 367 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 — 15.4 KiB — 53 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 — 2.6 KiB — 38 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 — 69 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 — 167 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 — 34 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 — 68 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 — 31.4 KiB — 61 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 — 864 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 — 59 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 — 35 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 — 37 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 — 40 ms — h2https://www.computer.org/_next/static/chunks/5167-fe28a2f8c0c393ad.jswww.computer.org/_next/static/chunk... 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https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fta.jpg&w=256&q=75 — 200 — 26.9 KiB — 701 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fai.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fai.jpg&w=256&q=75 — 200 — 11.2 KiB — 653 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fbd.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fbd.jpg&w=256&q=75 — 200 — 12.0 KiB — 673 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fcc.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fcc.jpg&w=256&q=75 — 200 — 8.4 KiB — 128 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftb.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftb.jpg&w=256&q=75 — 200 — 13.9 KiB — 645 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fci.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fci.jpg&w=256&q=75 — 200 — 22.8 KiB — 740 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftc.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftc.jpg&w=256&q=75 — 200 — 7.8 KiB — 654 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftq.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftq.jpg&w=256&q=75 — 200 — 8.8 KiB — 662 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fec.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fec.jpg&w=256&q=75 — 200 — 11.8 KiB — 617 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fth.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fth.jpg&w=256&q=75 — 200 — 6.6 KiB — 667 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftk.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftk.jpg&w=256&q=75 — 200 — 15.3 KiB — 752 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Flt.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Flt.jpg&w=256&q=75 — 200 — 8.6 KiB — 659 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftm.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Ftm.jpg&w=256&q=75 — 200 — 11.6 KiB — 653 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fmc.jpg&w=256&q=75www.computer.org/_next/image?url=ht... https://www.computer.org/_next/image?url=https%3A%2F%2Fcsdl-images.ieeecomputer.org%2Fwebsite%2Fdefault-covers%2Ftrans%2Fmc.jpg&w=256&q=75 — 200 — 12.6 KiB — 662 ms — h2https://www.computer.org/api/auth/sessionwww.computer.org/api/auth/session https://www.computer.org/api/auth/session — 200 — 583 B — 331 ms — h2blob:https://www.computer.org/df2b6562-e32d-4e9b-b9a4-c1e55c8b1060www.computer.org/df2b6562-e32d-4e9b... blob:https://www.computer.org/df2b6562-e32d-4e9b-b9a4-c1e55c8b1060 — 200 — -1 B — 73 ms — blobhttps://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/osano-ui.jscmp.osano.com/AzyzptTmRlqVd2LRf/dc1... https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/osano-ui.js — 200 — 25.0 KiB — 29 ms — h3https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/en.jsoncmp.osano.com/AzyzptTmRlqVd2LRf/dc1... https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/en.json — 200 — 0 B — 294 ms — h3https://www.googletagmanager.com/gtag/js?id=G-N7782B0VN4&cx=c&gtm=4e64h1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-N7782B0VN4&cx=c&gtm=4e64h1 — 200 — 172.1 KiB — 62 ms — h2https://cdn.feathr.co/js/boomerang.min.jscdn.feathr.co/js/boomerang.min.js https://cdn.feathr.co/js/boomerang.min.js — 200 — 41.9 KiB — 96 ms — h2https://www.computer.org/volunteering/boards-and-committees/standards-activities/home?_rsc=1wtp7www.computer.org/volunteering/board... https://www.computer.org/volunteering/boards-and-committees/standards-activities/home?_rsc=1wtp7 — 200 — 829 B — 24 ms — h2https://www.computer.org/about?_rsc=1wtp7www.computer.org/about?_rsc=1wtp7 https://www.computer.org/about?_rsc=1wtp7 — 200 — 790 B — 25 ms — h2https://www.computer.org/resources/newsletters?source=utility&_rsc=1wtp7www.computer.org/resources/newslett... https://www.computer.org/resources/newsletters?source=utility&_rsc=1wtp7 — 200 — 818 B — 33 ms — h2https://www.computer.org/?_rsc=1iwkqwww.computer.org/?_rsc=1iwkq https://www.computer.org/?_rsc=1iwkq — 200 — 34.7 KiB — 34 ms — h2https://www.computer.org/membership?_rsc=1iwkqwww.computer.org/membership?_rsc=1i... https://www.computer.org/membership?_rsc=1iwkq — 200 — 12.5 KiB — 29 ms — h2https://www.computer.org/conferences?_rsc=1iwkqwww.computer.org/conferences?_rsc=1... https://www.computer.org/conferences?_rsc=1iwkq — 200 — 24.3 KiB — 31 ms — h2https://www.computer.org/publications?_rsc=1iwkqwww.computer.org/publications?_rsc=... https://www.computer.org/publications?_rsc=1iwkq — 200 — 14.0 KiB — 32 ms — h2https://www.computer.org/education?_rsc=1iwkqwww.computer.org/education?_rsc=1iw... https://www.computer.org/education?_rsc=1iwkq — 200 — 29.7 KiB — 28 ms — h2https://www.computer.org/volunteering?_rsc=1iwkqwww.computer.org/volunteering?_rsc=... https://www.computer.org/volunteering?_rsc=1iwkq — 200 — 28.6 KiB — 23 ms — h2https://www.computer.org/membership/join?_rsc=1iwkqwww.computer.org/membership/join?_r... https://www.computer.org/membership/join?_rsc=1iwkq — 200 — 23.3 KiB — 24 ms — h2https://www.computer.org/publications/author-resources?_rsc=1iwkqwww.computer.org/publications/autho... https://www.computer.org/publications/author-resources?_rsc=1iwkq — 200 — 39.6 KiB — 31 ms — h2https://www.computer.org/volunteering/board-of-governors?_rsc=1iwkqwww.computer.org/volunteering/board... https://www.computer.org/volunteering/board-of-governors?_rsc=1iwkq — 200 — 13.1 KiB — 26 ms — h2https://www.computer.org/education/certifications?_rsc=1iwkqwww.computer.org/education/certific... https://www.computer.org/education/certifications?_rsc=1iwkq — 200 — 37.3 KiB — 25 ms — h2https://www.computer.org/publications/tech-news/insider-membership-news/top-30-rogothaman?_rsc=1iwkqwww.computer.org/publications/tech-... https://www.computer.org/publications/tech-news/insider-membership-news/top-30-rogothaman?_rsc=1iwkq — 200 — 16.6 KiB — 22 ms — h2https://www.computer.org/about/80th-anniversary?_rsc=1iwkqwww.computer.org/about/80th-anniver... https://www.computer.org/about/80th-anniversary?_rsc=1iwkq — 200 — 13.6 KiB — 21 ms — h2https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/en.jsoncmp.osano.com/AzyzptTmRlqVd2LRf/dc1... https://cmp.osano.com/AzyzptTmRlqVd2LRf/dc14b2c6-ae04-4497-98f0-2bdbdd2af415/en.json — 200 — 2.6 KiB — 20 ms — h3https://polo.feathr.co/v1/accounts/5cdda43ba3a493000bf82f7f/integrationspolo.feathr.co/v1/accounts/5cdda43b... https://polo.feathr.co/v1/accounts/5cdda43ba3a493000bf82f7f/integrations — 200 — 715 B — 177 ms — h2https://marco.feathr.co/v1/refreshmarco.feathr.co/v1/refresh https://marco.feathr.co/v1/refresh — 200 — 626 B — 320 ms — h2blob:https://www.computer.org/f607faa7-7d27-4aa1-89bd-631bba2f1a89www.computer.org/f607faa7-7d27-4aa1... blob:https://www.computer.org/f607faa7-7d27-4aa1-89bd-631bba2f1a89 — 200 — -1 B — 18 ms — blobblob:https://www.computer.org/ed1bafa5-a340-47fb-9700-e36c9070cecewww.computer.org/ed1bafa5-a340-47fb... blob:https://www.computer.org/ed1bafa5-a340-47fb-9700-e36c9070cece — 200 — -1 B — 15 ms — blobhttps://www.computer.org/favicon.icowww.computer.org/favicon.ico https://www.computer.org/favicon.ico — 301 — 331 B — 23 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 — 645 B — 125 ms — h2https://polo.feathr.co/v1/analytics/match/script.js?a_id=5cdda43ba3a493000bf82f7f&pk=feathrpolo.feathr.co/v1/analytics/match/s... https://polo.feathr.co/v1/analytics/match/script.js?a_id=5cdda43ba3a493000bf82f7f&pk=feathr — 200 — 445 B — 237 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 — 78 ms — h2https://match.adsrvr.org/track/cmf/generic?gdpr=0&ttd_passthrough=a_id%3D5cdda43ba3a493000bf82f7f&ttd_pid=6fgi4r1&ttd_puid=69e81474aceebb2e37fd1c7b&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=69e81474aceebb2e37fd1c7b&ttd_tpi=1 — 200 — 149 B — 107 ms — h2https://www.computer.org/_next/image?url=https%3A%2F%2Fmain-cdn.computer.org%2Fwp-content%2Fuploads%2F2024%2F07%2F19153145%2FIMG_9126-scaled.jpeg&w=1920&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%2F07%2F19153145%2FIMG_9126-scaled.jpeg&w=1920&q=75 — 200 — 174.6 KiB — 23 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 856ms · 553KB · $11/mo
www.computer.org
Other
Costly
Execution 266ms
Transfer 121 KB
Monthly Cost $4/mo
Unattributable
Other
Optional
Execution 148ms
Transfer 0 KB
Monthly Cost $2/mo
www.computer.org
Other
Optional
Execution 128ms
Transfer 31 KB
Monthly Cost $2/mo
cmp.osano.com
Other
Optional
Execution 113ms
Transfer 39 KB
Monthly Cost $2/mo
www.computer.org
Other
Optional
Execution 72ms
Transfer 53 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 70ms
Transfer 172 KB
Unused 42%
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 58ms
Transfer 136 KB
Unused 47%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.computer.org adds 266ms and costs ~$4/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 266ms 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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