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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
5
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
47
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
80
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

4.04 s

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

12.37 s

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

530 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.

6.85 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.

12.42 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 2 REVIEW 5 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 (1.7 MiB of 1.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2198ms total JS execution
FIX
2198ms total JS execution
Warning::
https://www.linux.org/: 432ms CPU time
Warning::
https://fundingchoicesmessages.google.com/f/AGSKWx...: 302ms CPU time
Warning::
Unattributable: 302ms CPU time
Info::
https://www.linux.org/cdn-cgi/challenge-platform/s...: 222ms CPU time
Info::
https://fundingchoicesmessages.google.com/i/ca-pub...: 195ms CPU time
Warning::
Third-party scripts: 2198ms (100% of total)

Main Thread Breakdown

Script Evaluation 51% Style & Layout 17% Other 16% Script Parsing & Compilation 10% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.linux.org/432ms46ms5ms3rd
https://fundingchoicesmessages.google.com/f/AGSKWxVGsclzdCZjGiq7u9_FqaVRgzsblrWefVJihslX_1V6zpY8ny2qL704agqf_TXLFwiUZa7x5YmGlYzBshYMjuMeitht3MlqnnY6SlShRzXetidpX6ZIT-nm2ATCrTa3ivoD1TD9PA==?fccs=W251bGwsbnVsbCxudWxsLG51bGwsbnVsbCxudWxsLFsxNzc2ODE0NDI4LDc0MTAwMDAwMF0sbnVsbCxudWxsLG51bGwsW251bGwsWzcsMTldXSwiaHR0cHM6Ly93d3cubGludXgub3JnLyIsbnVsbCxbWzgsIkRzS0dOLXFxZnJRIl0sWzksImVuLVVTIl0sWzE4LCJbW1tudWxsLDgyMV1dXSJdLFszNSwiMTc3NjgxNDQyOCJdLFsxOSwiMSJdLFsxNywiWzBdIl0sWzI0LCIiXSxbMjksImZhbHNlIl1dXQ302ms133ms38ms3rd
Unattributable302ms10ms0ms3rd
https://www.linux.org/cdn-cgi/challenge-platform/scripts/jsd/main.js222ms210ms4ms3rd
https://fundingchoicesmessages.google.com/i/ca-pub-4059641217434021?href=https%3A%2F%2Fwww.linux.org&ers=2195ms176ms16ms3rd
https://www.googletagmanager.com/gtag/js?id=G-HTNW3VXTNH&cx=c&gtm=4e64h1189ms154ms34ms3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js169ms103ms51ms3rd
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy2021.js?bust=31097971153ms111ms40ms3rd
https://www.googletagmanager.com/gtag/js?id=UA-3314314-270130ms105ms24ms3rd
https://www.linux.org/js/xf/preamble.min.js?_v=96f78a6e104ms76ms1ms3rd
D
JS Bundles
Action
15 scripts, 370 KB unused
FIX
15 scripts, 370 KB unused
Warning::
https://pagead2.googlesyndication.com/pagead/manag...: 147 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=UA-331...: 64 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-HTNW...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.linux.org/js/xf/core-compiled.js?_v=96...: 38 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://fundingchoicesmessages.google.com/i/ca-pub...: 36 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 370 KB
370 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy2021.js?bust=31097971178 KB147 KB (83%)✓3rd
https://www.googletagmanager.com/gtag/js?id=UA-3314314-270125 KB64 KB (51%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-HTNW3VXTNH&cx=c&gtm=4e64h1146 KB63 KB (43%)✓3rd
https://www.linux.org/js/xf/core-compiled.js?_v=96f78a6e54 KB38 KB (72%)✓3rd
https://fundingchoicesmessages.google.com/i/ca-pub-4059641217434021?href=https%3A%2F%2Fwww.linux.org&ers=270 KB36 KB (52%)✓3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js55 KB22 KB (40%)✓3rd
https://www.linux.org/js/8wayrun/porta/portal.min.js?_v=96f78a6e3 KB—✓3rd
https://www.linux.org/js/8wayrun/porta/images.min.js?_v=96f78a6e2 KB—✓3rd
https://analytics.ahrefs.com/analytics.js3 KB—✓3rd
https://www.linux.org/js/xf/tooltip.min.js?_v=96f78a6e_mt=undefined1 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

D
Page Weight Inventory
Action
52 resources · 1.7 MB · 370 KB savings available
FIX
52 resources · 1.7 MB · 370 KB savings available
Warning::
Page weight 757 KB over 1MB target
Got: 1.7 MB Expected: ≤ 1 MB
Info::
~370 KB of savings available
Warning::
51 third-party resources (100% of weight)
Info::
2 resources over 200KB
52 resources · 1.7 MiB · 51 third-party 756.8 KiB over 1MB target
Image 51% · 916.8 KiB
JavaScript 42% · 744.9 KiB
CSS 3% · 48.1 KiB
Font 2% · 42.1 KiB
Document 1% · 26.6 KiB
Other 0% · 2.3 KiB

~370.1 KiB of savings available

Remove unused JavaScript: 370.1 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
1.7 MB transferred, 52 requests
REVIEW
1.7 MB transferred, 52 requests
Info::
Page weighs 3.9 MB (1.7 MB transferred)
Warning::
JavaScript is 745 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 745 KB
Info::
52 HTTP requests
Info::
Estimated 0.36 g CO2 per page load
1.7 MB / 2.4 MB budget
1.7 MB transferred
52 requests
0.36 g CO2 per page load
JavaScript 744.9 KiB 42%
Images 669.2 KiB 38%
Other 248.7 KiB 14%
CSS 48.1 KiB 3%
Fonts 42.1 KiB 2%
HTML 26.0 KiB 1%
Other 1.3 KiB 0%
Other 548 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

C
Image Optimization
Action
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://www.linux.org/images/logo.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.linux.org/images/linux-org_shirt_adver... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.linux.org/images/linux-youtube-300x100... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 669 KB
0 oversized -0 KB
18 legacy format
3 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

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
1 fonts (42 KB)
PASS
1 fonts (42 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

42 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 4.0 s LCP 12.4 shttps://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.1 KiB — 88 ms — font-display: swap
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 88 ms
Start 1.2 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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
52 requests over 1524ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 4.0 s LCP 12.4 shttps://linux.org// https://linux.org/ — 301 — 453 B — 144 ms — h2https://www.linux.org/www.linux.org/ https://www.linux.org/ — 200 — 26.0 KiB — 195 ms — h2https://www.linux.org/cdn-cgi/speculationwww.linux.org/cdn-cgi/speculation https://www.linux.org/cdn-cgi/speculation — 200 — 447 B — 20 ms — h2https://analytics.ahrefs.com/analytics.jsanalytics.ahrefs.com/analytics.js https://analytics.ahrefs.com/analytics.js — 200 — 3.0 KiB — 80 ms — h3https://www.linux.org/css.php?css=public%3Anormalize.css%2Cpublic%3Afa.css%2Cpublic%3Acore.less%2Cpublic%3Aapp.less&s=1&l=1&d=1774975704&k=8dd9b74a13a25da8f76014dc20b0364433a25f4cwww.linux.org/css.php?css=public%3A... https://www.linux.org/css.php?css=public%3Anormalize.css%2Cpublic%3Afa.css%2Cpublic%3Acore.less%2Cpublic%3Aapp.less&s=1&l=1&d=1774975704&k=8dd9b74a13a25da8f76014dc20b0364433a25f4c — 200 — 34.0 KiB — 131 ms — h2https://www.linux.org/css.php?css=public%3AEWRporta.less%2Cpublic%3AEWRporta_articles.less%2Cpublic%3Amessage.less%2Cpublic%3Astructured_list.less%2Cpublic%3Aextra.less&s=1&l=1&d=1774975704&k=43678531c7e23329f3913872475221a3eaf38716www.linux.org/css.php?css=public%3A... https://www.linux.org/css.php?css=public%3AEWRporta.less%2Cpublic%3AEWRporta_articles.less%2Cpublic%3Amessage.less%2Cpublic%3Astructured_list.less%2Cpublic%3Aextra.less&s=1&l=1&d=1774975704&k=43678531c7e23329f3913872475221a3eaf38716 — 200 — 7.4 KiB — 112 ms — h2https://www.linux.org/js/xf/preamble.min.js?_v=96f78a6ewww.linux.org/js/xf/preamble.min.js... https://www.linux.org/js/xf/preamble.min.js?_v=96f78a6e — 200 — 2.1 KiB — 25 ms — h2https://www.linux.org/images/logo.pngwww.linux.org/images/logo.png https://www.linux.org/images/logo.png — 200 — 4.9 KiB — 25 ms — h2https://www.linux.org/images/linux-org_shirt_advert3.pngwww.linux.org/images/linux-org_shir... https://www.linux.org/images/linux-org_shirt_advert3.png — 200 — 75.2 KiB — 43 ms — h2https://www.linux.org/images/linux-youtube-300x100_3.pngwww.linux.org/images/linux-youtube-... https://www.linux.org/images/linux-youtube-300x100_3.png — 200 — 46.7 KiB — 68 ms — h3https://analytics.ahrefs.com/api/eventanalytics.ahrefs.com/api/event https://analytics.ahrefs.com/api/event — 200 — 307 B — 135 ms — h3https://www.linux.org/js/vendor/vendor-compiled.js?_v=96f78a6ewww.linux.org/js/vendor/vendor-comp... https://www.linux.org/js/vendor/vendor-compiled.js?_v=96f78a6e — 200 — 5.0 KiB — 25 ms — h3https://www.linux.org/js/xf/core-compiled.js?_v=96f78a6ewww.linux.org/js/xf/core-compiled.j... https://www.linux.org/js/xf/core-compiled.js?_v=96f78a6e — 200 — 53.9 KiB — 46 ms — h3https://www.linux.org/js/8wayrun/porta/portal.min.js?_v=96f78a6ewww.linux.org/js/8wayrun/porta/port... https://www.linux.org/js/8wayrun/porta/portal.min.js?_v=96f78a6e — 200 — 2.6 KiB — 32 ms — h3https://www.linux.org/js/8wayrun/porta/images.min.js?_v=96f78a6ewww.linux.org/js/8wayrun/porta/imag... https://www.linux.org/js/8wayrun/porta/images.min.js?_v=96f78a6e — 200 — 2.3 KiB — 31 ms — h3https://www.googletagmanager.com/gtag/js?id=UA-3314314-270www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=UA-3314314-270 — 200 — 125.3 KiB — 144 ms — h2https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.jspagead2.googlesyndication.com/pagea... https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js — 200 — 54.6 KiB — 132 ms — h3https://www.linux.org/data/local/icons/regular.svg?v=1774975704www.linux.org/data/local/icons/regu... https://www.linux.org/data/local/icons/regular.svg?v=1774975704 — 200 — 39.3 KiB — 48 ms — h3https://www.linux.org/styles/fa/regular/bars.svg?v=5.15.3www.linux.org/styles/fa/regular/bar... https://www.linux.org/styles/fa/regular/bars.svg?v=5.15.3 — 200 — 751 B — 30 ms — h3https://www.linux.org/styles/fa/regular/bolt.svg?v=5.15.3www.linux.org/styles/fa/regular/bol... https://www.linux.org/styles/fa/regular/bolt.svg?v=5.15.3 — 200 — 906 B — 33 ms — h3https://www.linux.org/styles/fa/regular/search.svg?v=5.15.3www.linux.org/styles/fa/regular/sea... https://www.linux.org/styles/fa/regular/search.svg?v=5.15.3 — 200 — 858 B — 32 ms — h3https://www.linux.org/styles/fa/regular/chevron-left.svg?v=5.15.3www.linux.org/styles/fa/regular/che... https://www.linux.org/styles/fa/regular/chevron-left.svg?v=5.15.3 — 200 — 781 B — 33 ms — h3https://www.linux.org/articles/attachments/figure-02-jpg.30932/www.linux.org/articles/attachments/... https://www.linux.org/articles/attachments/figure-02-jpg.30932/ — 200 — 98.9 KiB — 134 ms — h3https://www.linux.org/articles/attachments/figure-4-jpg.29238/www.linux.org/articles/attachments/... https://www.linux.org/articles/attachments/figure-4-jpg.29238/ — 200 — 214.3 KiB — 162 ms — h3https://www.linux.org/articles/attachments/figure-2-jpg.29228/www.linux.org/articles/attachments/... https://www.linux.org/articles/attachments/figure-2-jpg.29228/ — 200 — 59.9 KiB — 157 ms — h3https://www.linux.org/articles/attachments/figure-2-jpg.28896/www.linux.org/articles/attachments/... https://www.linux.org/articles/attachments/figure-2-jpg.28896/ — 200 — 8.5 KiB — 138 ms — h3https://www.linux.org/articles/attachments/figure-01-jpg.28885/www.linux.org/articles/attachments/... https://www.linux.org/articles/attachments/figure-01-jpg.28885/ — 200 — 74.1 KiB — 155 ms — h3https://www.linux.org/articles/attachments/figure-01-jpg.28874/www.linux.org/articles/attachments/... https://www.linux.org/articles/attachments/figure-01-jpg.28874/ — 200 — 76.2 KiB — 158 ms — h3https://www.linux.org/styles/fa/solid/caret-right.svg?v=5.15.3www.linux.org/styles/fa/solid/caret... https://www.linux.org/styles/fa/solid/caret-right.svg?v=5.15.3 — 200 — 753 B — 111 ms — h3https://www.linux.org/styles/fa/solid/forward.svg?v=5.15.3www.linux.org/styles/fa/solid/forwa... https://www.linux.org/styles/fa/solid/forward.svg?v=5.15.3 — 200 — 753 B — 30 ms — h3
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 4.0 s LCP 12.4 shttps://linux.org// https://linux.org/ — 301 — 453 B — 144 ms — h2https://www.linux.org/www.linux.org/ https://www.linux.org/ — 200 — 26.0 KiB — 195 ms — h2https://www.linux.org/cdn-cgi/speculationwww.linux.org/cdn-cgi/speculation https://www.linux.org/cdn-cgi/speculation — 200 — 447 B — 20 ms — h2https://analytics.ahrefs.com/analytics.jsanalytics.ahrefs.com/analytics.js https://analytics.ahrefs.com/analytics.js — 200 — 3.0 KiB — 80 ms — h3https://www.linux.org/css.php?css=public%3Anormalize.css%2Cpublic%3Afa.css%2Cpublic%3Acore.less%2Cpublic%3Aapp.less&s=1&l=1&d=1774975704&k=8dd9b74a13a25da8f76014dc20b0364433a25f4cwww.linux.org/css.php?css=public%3A... https://www.linux.org/css.php?css=public%3Anormalize.css%2Cpublic%3Afa.css%2Cpublic%3Acore.less%2Cpublic%3Aapp.less&s=1&l=1&d=1774975704&k=8dd9b74a13a25da8f76014dc20b0364433a25f4c — 200 — 34.0 KiB — 131 ms — h2https://www.linux.org/css.php?css=public%3AEWRporta.less%2Cpublic%3AEWRporta_articles.less%2Cpublic%3Amessage.less%2Cpublic%3Astructured_list.less%2Cpublic%3Aextra.less&s=1&l=1&d=1774975704&k=43678531c7e23329f3913872475221a3eaf38716www.linux.org/css.php?css=public%3A... https://www.linux.org/css.php?css=public%3AEWRporta.less%2Cpublic%3AEWRporta_articles.less%2Cpublic%3Amessage.less%2Cpublic%3Astructured_list.less%2Cpublic%3Aextra.less&s=1&l=1&d=1774975704&k=43678531c7e23329f3913872475221a3eaf38716 — 200 — 7.4 KiB — 112 ms — h2https://www.linux.org/js/xf/preamble.min.js?_v=96f78a6ewww.linux.org/js/xf/preamble.min.js... https://www.linux.org/js/xf/preamble.min.js?_v=96f78a6e — 200 — 2.1 KiB — 25 ms — h2https://www.linux.org/images/logo.pngwww.linux.org/images/logo.png https://www.linux.org/images/logo.png — 200 — 4.9 KiB — 25 ms — h2https://www.linux.org/images/linux-org_shirt_advert3.pngwww.linux.org/images/linux-org_shir... https://www.linux.org/images/linux-org_shirt_advert3.png — 200 — 75.2 KiB — 43 ms — h2https://www.linux.org/images/linux-youtube-300x100_3.pngwww.linux.org/images/linux-youtube-... https://www.linux.org/images/linux-youtube-300x100_3.png — 200 — 46.7 KiB — 68 ms — h3https://analytics.ahrefs.com/api/eventanalytics.ahrefs.com/api/event https://analytics.ahrefs.com/api/event — 200 — 307 B — 135 ms — h3https://www.linux.org/js/vendor/vendor-compiled.js?_v=96f78a6ewww.linux.org/js/vendor/vendor-comp... https://www.linux.org/js/vendor/vendor-compiled.js?_v=96f78a6e — 200 — 5.0 KiB — 25 ms — h3https://www.linux.org/js/xf/core-compiled.js?_v=96f78a6ewww.linux.org/js/xf/core-compiled.j... https://www.linux.org/js/xf/core-compiled.js?_v=96f78a6e — 200 — 53.9 KiB — 46 ms — h3https://www.linux.org/js/8wayrun/porta/portal.min.js?_v=96f78a6ewww.linux.org/js/8wayrun/porta/port... https://www.linux.org/js/8wayrun/porta/portal.min.js?_v=96f78a6e — 200 — 2.6 KiB — 32 ms — 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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 2198ms · 670KB · $29/mo
www.linux.org
Other
Costly
Execution 432ms
Transfer 26 KB
Monthly Cost $6/mo
fundingchoicesmessages.google.com
Other
Costly
Execution 302ms
Transfer 68 KB
Monthly Cost $4/mo
Unattributable
Other
Costly
Execution 302ms
Transfer 0 KB
Monthly Cost $4/mo
www.linux.org
Other
Costly
Execution 222ms
Transfer 0 KB
Monthly Cost $3/mo
fundingchoicesmessages.google.com
Other
Optional
Execution 195ms
Transfer 70 KB
Unused 52%
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 189ms
Transfer 146 KB
Unused 43%
Monthly Cost $3/mo
pagead2.googlesyndication.com
Other
Optional
Execution 169ms
Transfer 55 KB
Unused 40%
Monthly Cost $2/mo
pagead2.googlesyndication.com
Other
Optional
Execution 153ms
Transfer 178 KB
Unused 83%
Monthly Cost $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 130ms
Transfer 125 KB
Unused 51%
Monthly Cost $2/mo
www.linux.org
Other
Optional
Execution 104ms
Transfer 2 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.linux.org adds 432ms and costs ~$6/month
  • fundingchoicesmessages.google.com adds 302ms and costs ~$4/month
  • Unattributable adds 302ms and costs ~$4/month
  • www.linux.org adds 222ms 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.linux.org takes 432ms 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

fundingchoicesmessages.google.com takes 302ms 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 302ms 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.linux.org takes 222ms 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

52% of fundingchoicesmessages.google.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

83% of pagead2.googlesyndication.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

51% of Google Tag Manager'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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