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https://grc.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
5
REVIEW
3
PASS
7
INFO
2

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

Mobile Desktop
82
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
88
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.

2.21 s

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

3.99 s

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

194 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.

2.21 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.

5.46 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 3 REVIEW 5 FIX
F
Page Weight Budget
Action
4.1 MB transferred, 47 requests
FIX
4.1 MB transferred, 47 requests
Critical::
Page weighs 4.8 MB (4.1 MB transferred)
Info::
47 HTTP requests
Info::
Estimated 0.86 g CO2 per page load
4.1 MB / 2.4 MB budget
4.1 MB transferred
47 requests
0.86 g CO2 per page load
Other 3.6 MiB 89%
JavaScript 332.7 KiB 8%
Images 82.6 KiB 2%
CSS 22.2 KiB 1%
Other 15.4 KiB 0%
HTML 10.1 KiB 0%
Other 7.9 KiB 0%
Other 3.4 KiB 0%
Other 546 B 0%
0 2.4 MB 4.9 MB
Over budget
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 (4.1 MiB of 4.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2042ms total JS execution
FIX
2042ms total JS execution
Warning::
https://www.grc.com/intro.htm: 727ms CPU time
Warning::
Unattributable: 568ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-GS3M...: 411ms CPU time
Info::
https://cse.google.com/cse.js?cx=00006455229118198...: 190ms CPU time
Info::
https://cse.google.com/adsense/search/async-ads.js: 76ms CPU time
Warning::
Third-party scripts: 2042ms (100% of total)

Main Thread Breakdown

Other 39% Script Evaluation 30% Style & Layout 18% Rendering 6% Script Parsing & Compilation 5%
ScriptTotalScriptingParse/CompileParty
https://www.grc.com/intro.htm727ms7ms2ms3rd
Unattributable568ms19ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-GS3MK15LN5411ms352ms48ms3rd
https://cse.google.com/cse.js?cx=000064552291181981813:y8yi5go2xza190ms133ms1ms3rd
https://cse.google.com/adsense/search/async-ads.js76ms46ms19ms3rd
https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D71ms33ms36ms3rd
D
Page Weight Inventory
Action
47 resources · 4.1 MB · 144 KB savings available
FIX
47 resources · 4.1 MB · 144 KB savings available
Warning::
Page weight 3.1 MB over 1MB target
Got: 4.1 MB Expected: ≤ 1 MB
Info::
~144 KB of savings available
Warning::
46 third-party resources (100% of weight)
Info::
1 resources over 200KB
47 resources · 4.1 MiB · 46 third-party 3.1 MiB over 1MB target
Media 89% · 3.6 MiB
JavaScript 8% · 332.7 KiB
Image 2% · 97.6 KiB
CSS 1% · 22.2 KiB
Document 0% · 13.5 KiB
Other 0% · 8.7 KiB

~143.5 KiB of savings available

Remove unused JavaScript: 143.5 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.

B
Image Optimization
22 images, 0 KB saveable
REVIEW
22 images, 0 KB saveable
Info::
All images are well-optimized
22 images 83 KB
0 oversized -0 KB
18 legacy format
0 missing dimensions CLS risk
B
JS Bundles
6 scripts, 144 KB unused
REVIEW
6 scripts, 144 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-GS3M...: 63 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.google.com/cse/static/element/b33cba58...: 49 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cse.google.com/adsense/search/async-ads.js: 32 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 144 KB
144 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-GS3MK15LN5157 KB63 KB (40%)✓3rd
https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D98 KB49 KB (49%)✓3rd
https://cse.google.com/adsense/search/async-ads.js44 KB32 KB (73%)✓3rd
https://cse.google.com/cse.js?cx=000064552291181981813:y8yi5go2xza4 KB—✓3rd
https://ep2.adtrafficquality.google/sodar/sodar2.js8 KB—✓3rd
https://pagead2.googlesyndication.com/bg/gHgVpHNo6dn0XHhe-kL49krin5JQn9VQtx09w0rxLvA.js22 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
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
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
47 requests over 1910ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.2 s LCP 4.0 shttps://grc.com// https://grc.com/ — 301 — 292 B — 287 ms — http/1.1https://www.grc.com/intro.htmwww.grc.com/intro.htm https://www.grc.com/intro.htm — 200 — 4.4 KiB — 100 ms — http/1.1https://www.grc.com/grc.css?3www.grc.com/grc.css?3 https://www.grc.com/grc.css?3 — 200 — 3.9 KiB — 97 ms — http/1.1https://www.grc.com/search.csswww.grc.com/search.css https://www.grc.com/search.css — 200 — 836 B — 102 ms — http/1.1https://www.grc.com/mainmenu.css?2www.grc.com/mainmenu.css?2 https://www.grc.com/mainmenu.css?2 — 200 — 3.6 KiB — 112 ms — http/1.1https://www.grc.com/webfonts.csswww.grc.com/webfonts.css https://www.grc.com/webfonts.css — 200 — 1.5 KiB — 114 ms — http/1.1https://www.grc.com/image/walkthrough.pngwww.grc.com/image/walkthrough.png https://www.grc.com/image/walkthrough.png — 200 — 44.2 KiB — 156 ms — http/1.1https://www.grctech.com/_d0hpwi4bqy3th_/image/su2blackglow.gifwww.grctech.com/_d0hpwi4bqy3th_/ima... https://www.grctech.com/_d0hpwi4bqy3th_/image/su2blackglow.gif — 200 — 13.7 KiB — 255 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-GS3MK15LN5www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-GS3MK15LN5 — 200 — 157.2 KiB — 102 ms — h2https://www.grc.com/mh-logo.gifwww.grc.com/mh-logo.gif https://www.grc.com/mh-logo.gif — 200 — 3.2 KiB — 118 ms — http/1.1https://cse.google.com/cse.js?cx=000064552291181981813:y8yi5go2xzacse.google.com/cse.js?cx=0000645522... https://cse.google.com/cse.js?cx=000064552291181981813:y8yi5go2xza — 200 — 3.7 KiB — 71 ms — h2https://www.grc.com/manifest.jsonwww.grc.com/manifest.json https://www.grc.com/manifest.json — 404 — 1.7 KiB — 92 ms — http/1.1https://www.grc.com/mh-focus.gifwww.grc.com/mh-focus.gif https://www.grc.com/mh-focus.gif — 200 — 5.6 KiB — 21 ms — http/1.1https://www.grc.com/image/email-subscriptions.pngwww.grc.com/image/email-subscriptio... https://www.grc.com/image/email-subscriptions.png — 200 — 2.4 KiB — 19 ms — http/1.1https://www.grc.com/mb-home.gifwww.grc.com/mb-home.gif https://www.grc.com/mb-home.gif — 200 — 1004 B — 18 ms — http/1.1https://www.grc.com/mb_products.gifwww.grc.com/mb_products.gif https://www.grc.com/mb_products.gif — 200 — 1.3 KiB — 22 ms — http/1.1https://www.grc.com/mb-services.gifwww.grc.com/mb-services.gif https://www.grc.com/mb-services.gif — 200 — 1.4 KiB — 21 ms — http/1.1https://www.grc.com/mb-freeware.gifwww.grc.com/mb-freeware.gif https://www.grc.com/mb-freeware.gif — 200 — 1.1 KiB — 34 ms — http/1.1https://www.grc.com/mb-research.gifwww.grc.com/mb-research.gif https://www.grc.com/mb-research.gif — 200 — 1.4 KiB — 29 ms — http/1.1https://www.grc.com/mb-other.gifwww.grc.com/mb-other.gif https://www.grc.com/mb-other.gif — 200 — 1.0 KiB — 27 ms — http/1.1https://www.grc.com/image/transpixel.gifwww.grc.com/image/transpixel.gif https://www.grc.com/image/transpixel.gif — 200 — 405 B — 27 ms — http/1.1data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPHN2ZyB2ZXJzaW9uPSIxL…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPHN2ZyB2ZXJzaW9uPSIxL… — 200 — 0 B — 0 ms — datahttps://media.grc.com/video/Walkthrough.mp4media.grc.com/video/Walkthrough.mp4 https://media.grc.com/video/Walkthrough.mp4 — 206 — 3.6 MiB — 175 ms — http/1.1data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCEtLSBHZW5lcmF0b3I6I…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCEtLSBHZW5lcmF0b3I6I… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCEtLSBHZW5lcmF0b3I6I…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCEtLSBHZW5lcmF0b3I6I… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd…data:image/svg+xml;base64,PHN2ZyBma... data:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd…data:image/svg+xml;base64,PHN2ZyBma... data:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd…data:image/svg+xml;base64,PHN2ZyBma... data:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd… — 200 — 0 B — 0 ms — datahttps://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3Dwww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D — 200 — 98.5 KiB — 87 ms — h3https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.csswww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.css — 200 — 9.7 KiB — 61 ms — h3
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.2 s LCP 4.0 shttps://grc.com// https://grc.com/ — 301 — 292 B — 287 ms — http/1.1https://www.grc.com/intro.htmwww.grc.com/intro.htm https://www.grc.com/intro.htm — 200 — 4.4 KiB — 100 ms — http/1.1https://www.grc.com/grc.css?3www.grc.com/grc.css?3 https://www.grc.com/grc.css?3 — 200 — 3.9 KiB — 97 ms — http/1.1https://www.grc.com/search.csswww.grc.com/search.css https://www.grc.com/search.css — 200 — 836 B — 102 ms — http/1.1https://www.grc.com/mainmenu.css?2www.grc.com/mainmenu.css?2 https://www.grc.com/mainmenu.css?2 — 200 — 3.6 KiB — 112 ms — http/1.1https://www.grc.com/webfonts.csswww.grc.com/webfonts.css https://www.grc.com/webfonts.css — 200 — 1.5 KiB — 114 ms — http/1.1https://www.grc.com/image/walkthrough.pngwww.grc.com/image/walkthrough.png https://www.grc.com/image/walkthrough.png — 200 — 44.2 KiB — 156 ms — http/1.1https://www.grctech.com/_d0hpwi4bqy3th_/image/su2blackglow.gifwww.grctech.com/_d0hpwi4bqy3th_/ima... https://www.grctech.com/_d0hpwi4bqy3th_/image/su2blackglow.gif — 200 — 13.7 KiB — 255 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-GS3MK15LN5www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-GS3MK15LN5 — 200 — 157.2 KiB — 102 ms — h2https://www.grc.com/mh-logo.gifwww.grc.com/mh-logo.gif https://www.grc.com/mh-logo.gif — 200 — 3.2 KiB — 118 ms — http/1.1https://cse.google.com/cse.js?cx=000064552291181981813:y8yi5go2xzacse.google.com/cse.js?cx=0000645522... https://cse.google.com/cse.js?cx=000064552291181981813:y8yi5go2xza — 200 — 3.7 KiB — 71 ms — h2https://www.grc.com/manifest.jsonwww.grc.com/manifest.json https://www.grc.com/manifest.json — 404 — 1.7 KiB — 92 ms — http/1.1https://www.grc.com/mh-focus.gifwww.grc.com/mh-focus.gif https://www.grc.com/mh-focus.gif — 200 — 5.6 KiB — 21 ms — http/1.1https://www.grc.com/image/email-subscriptions.pngwww.grc.com/image/email-subscriptio... https://www.grc.com/image/email-subscriptions.png — 200 — 2.4 KiB — 19 ms — http/1.1https://www.grc.com/mb-home.gifwww.grc.com/mb-home.gif https://www.grc.com/mb-home.gif — 200 — 1004 B — 18 ms — http/1.1https://www.grc.com/mb_products.gifwww.grc.com/mb_products.gif https://www.grc.com/mb_products.gif — 200 — 1.3 KiB — 22 ms — http/1.1https://www.grc.com/mb-services.gifwww.grc.com/mb-services.gif https://www.grc.com/mb-services.gif — 200 — 1.4 KiB — 21 ms — http/1.1https://www.grc.com/mb-freeware.gifwww.grc.com/mb-freeware.gif https://www.grc.com/mb-freeware.gif — 200 — 1.1 KiB — 34 ms — http/1.1https://www.grc.com/mb-research.gifwww.grc.com/mb-research.gif https://www.grc.com/mb-research.gif — 200 — 1.4 KiB — 29 ms — http/1.1https://www.grc.com/mb-other.gifwww.grc.com/mb-other.gif https://www.grc.com/mb-other.gif — 200 — 1.0 KiB — 27 ms — http/1.1https://www.grc.com/image/transpixel.gifwww.grc.com/image/transpixel.gif https://www.grc.com/image/transpixel.gif — 200 — 405 B — 27 ms — http/1.1data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPHN2ZyB2ZXJzaW9uPSIxL…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPHN2ZyB2ZXJzaW9uPSIxL… — 200 — 0 B — 0 ms — datahttps://media.grc.com/video/Walkthrough.mp4media.grc.com/video/Walkthrough.mp4 https://media.grc.com/video/Walkthrough.mp4 — 206 — 3.6 MiB — 175 ms — http/1.1data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCEtLSBHZW5lcmF0b3I6I…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCEtLSBHZW5lcmF0b3I6I… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCEtLSBHZW5lcmF0b3I6I…data:image/svg+xml;base64,PD94bWwgd... data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCEtLSBHZW5lcmF0b3I6I… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd…data:image/svg+xml;base64,PHN2ZyBma... data:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd…data:image/svg+xml;base64,PHN2ZyBma... data:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd…data:image/svg+xml;base64,PHN2ZyBma... data:image/svg+xml;base64,PHN2ZyBmaWxsPSJXaW5kb3ciIGhlaWdodD0iMjQiIHZpZXdCb3g9IjAgMCAyNCAyNCIgd2lkd… — 200 — 0 B — 0 ms — datahttps://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3Dwww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__en.js?usqp=CAI%3D — 200 — 98.5 KiB — 87 ms — h3https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.csswww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+en.css — 200 — 9.7 KiB — 61 ms — h3https://www.google.com/cse/static/style/look/v6/default.csswww.google.com/cse/static/style/loo... https://www.google.com/cse/static/style/look/v6/default.css — 200 — 1.2 KiB — 34 ms — h3https://www.google-analytics.com/g/collect?v=2&tid=G-GS3MK15LN5&gtm=45je64k1v9194581884za200zd9194581884&_p=1776902000022&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=448926684.1776902000&frm=0&pscdl=noapi&rcb=11&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938468~117266401~117512542&sid=1776902000&sct=1&seg=0&dl=https%3A%2F%2Fwww.grc.com%2Fintro.htm&dt=%C2%A0%C2%A0Home%20of%20Gibson%20Research%20Corporation%C2%A0%C2%A0&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=715www.google-analytics.com/g/collect?... 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— 204 — 17 B — 40 ms — h3
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 2042ms · 307KB · $27/mo
www.grc.com
Other
Costly
Execution 727ms
Transfer 4 KB
Monthly Cost $10/mo
Unattributable
Other
Costly
Execution 568ms
Transfer 0 KB
Monthly Cost $8/mo
Google Tag Manager
Tag Manager
Costly
Execution 411ms
Transfer 157 KB
Unused 40%
Monthly Cost $5/mo
cse.google.com
Other
Optional
Execution 190ms
Transfer 4 KB
Monthly Cost $3/mo
cse.google.com
Other
Optional
Execution 76ms
Transfer 44 KB
Unused 73%
Monthly Cost $1/mo
www.google.com
Other
Optional
Execution 71ms
Transfer 98 KB
Unused 49%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.grc.com adds 727ms and costs ~$10/month
  • Unattributable adds 568ms and costs ~$8/month
  • Google Tag Manager adds 411ms and costs ~$5/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.grc.com takes 727ms 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 568ms 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 411ms 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

73% of cse.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

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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