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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
82
GRADE
B
FIX
3
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
83
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
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.

790 ms

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

1.20 s

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

0 ms

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

0.264

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

790 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.20 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
8 PASS 2 REVIEW 3 FIX
D
Third-Party Impact
Action
99% third-party, 0 ms blocking
FIX
99% third-party, 0 ms blocking
Warning::
Third-party code accounts for 99% of page weight (898.9 KiB of 905.0 KiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
D
JS Bundles
Action
15 scripts, 326 KB unused
FIX
15 scripts, 326 KB unused
Warning::
https://pagead2.googlesyndication.com/pagead/manag...: 148 KB unused (84%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-STH2...: 63 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/all.js?hash=759...: 52 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://fundingchoicesmessages.google.com/i/ca-pub...: 36 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://pagead2.googlesyndication.com/pagead/js/ad...: 26 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 326 KB
326 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604200101/show_ads_impl_fy2021.js?bust=31098019177 KB148 KB (84%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-STH272KG8X152 KB63 KB (42%)✓3rd
https://connect.facebook.net/en_US/all.js?hash=7591b7065a37fb06402075fc23cb3c5784 KB52 KB (62%)✓3rd
https://fundingchoicesmessages.google.com/i/ca-pub-8461053917062045?href=https%3A%2F%2Fprnt.sc&ers=270 KB36 KB (53%)✓3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js54 KB26 KB (48%)✓3rd
https://www.google-analytics.com/analytics.js21 KB—✓3rd
https://st.prntscr.com/2025/12/17/0541/js/jquery.1.8.2.min.js33 KB—✓3rd
https://connect.facebook.net/en_US/all.js2 KB—✓3rd
https://platform.twitter.com/widgets.js27 KB—✓3rd
https://prntscr.com/twitter.json?callback=twitterProcessJSON0 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

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
15 images, 0 KB saveable
REVIEW
15 images, 0 KB saveable
Warning::
https://st.prntscr.com/2025/12/17/0541/img/footer-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
15 images 27 KB
0 oversized -0 KB
4 legacy format
1 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

B
Page Weight Inventory
50 resources · 905 KB · 326 KB savings available
REVIEW
50 resources · 905 KB · 326 KB savings available
Info::
Within 1MB page-weight target
Got: 905 KB
Info::
~326 KB of savings available
Warning::
48 third-party resources (99% of weight)
50 resources · 905.0 KiB · 48 third-party Within 1MB page-weight target
JavaScript 79% · 717.5 KiB
Document 14% · 129.3 KiB
Image 5% · 43.7 KiB
CSS 1% · 11.3 KiB
Other 0% · 3.1 KiB

~325.8 KiB of savings available

Remove unused JavaScript: 325.8 KiB
A
Page Weight Budget
905 KB transferred, 50 requests
PASS
905 KB transferred, 50 requests
Info::
Page weighs 2.8 MB (905 KB transferred)
Warning::
JavaScript is 718 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 718 KB
Info::
50 HTTP requests
Info::
Estimated 0.19 g CO2 per page load
905 KB / 2.4 MB budget
905 KB transferred
50 requests
0.19 g CO2 per page load
JavaScript 717.5 KiB 79%
HTML 129.2 KiB 14%
Images 27.3 KiB 3%
Other 16.4 KiB 2%
CSS 11.3 KiB 1%
Other 1.6 KiB 0%
Other 863 B 0%
Other 786 B 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

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+
JS Execution Cost
248ms total JS execution
PASS
248ms total JS execution
Info::
https://prnt.sc/: 72ms CPU time
Info::
Unattributable: 66ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-STH2...: 57ms CPU time
Info::
https://pagead2.googlesyndication.com/pagead/js/ad...: 52ms CPU time
Warning::
Third-party scripts: 176ms (71% of total)

Main Thread Breakdown

Script Evaluation 57% Other 19% Script Parsing & Compilation 13% Style & Layout 8%
ScriptTotalScriptingParse/CompileParty
https://prnt.sc/72ms9ms1ms1st
Unattributable66ms3ms0ms3rd
https://www.googletagmanager.com/gtag/js?id=G-STH272KG8X57ms47ms10ms3rd
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js52ms33ms15ms3rd
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+
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
50 requests over 1435ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 790 ms LCP 1.2 shttps://prnt.sc// https://prnt.sc/ — 200 — 5.3 KiB — 135 ms — h3https://st.prntscr.com/2025/12/17/0541/css/main.cssst.prntscr.com/2025/12/17/0541/css/... https://st.prntscr.com/2025/12/17/0541/css/main.css — 200 — 9.1 KiB — 76 ms — h3https://st.prntscr.com/2025/12/17/0541/js/jquery.1.8.2.min.jsst.prntscr.com/2025/12/17/0541/js/j... https://st.prntscr.com/2025/12/17/0541/js/jquery.1.8.2.min.js — 200 — 32.9 KiB — 110 ms — h3https://st.prntscr.com/2025/12/17/0541/js/script.mix.jsst.prntscr.com/2025/12/17/0541/js/s... https://st.prntscr.com/2025/12/17/0541/js/script.mix.js — 200 — 23.9 KiB — 101 ms — h3https://st.prntscr.com/2025/12/17/0541/img/footer-logo.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/footer-logo.png — 200 — 908 B — 56 ms — h3https://st.prntscr.com/2025/12/17/0541/css/jquery.smartbanner.cssst.prntscr.com/2025/12/17/0541/css/... https://st.prntscr.com/2025/12/17/0541/css/jquery.smartbanner.css — 200 — 1.4 KiB — 138 ms — h3https://st.prntscr.com/2025/12/17/0541/js/jquery.smartbanner.jsst.prntscr.com/2025/12/17/0541/js/j... https://st.prntscr.com/2025/12/17/0541/js/jquery.smartbanner.js — 200 — 3.0 KiB — 35 ms — h3https://www.googletagmanager.com/gtag/js?id=G-STH272KG8Xwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-STH272KG8X — 200 — 151.8 KiB — 173 ms — h2https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.jspagead2.googlesyndication.com/pagea... https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js — 200 — 54.2 KiB — 134 ms — h3https://quantcast.mgr.consensu.org/choice/n-ZGqfdsg5894/prnt.sc/choice.jsquantcast.mgr.consensu.org/choice/n... https://quantcast.mgr.consensu.org/choice/n-ZGqfdsg5894/prnt.sc/choice.js — -1 — 0 B — 28 ms — https://www.google-analytics.com/analytics.jswww.google-analytics.com/analytics.... https://www.google-analytics.com/analytics.js — 200 — 20.9 KiB — 114 ms — h2https://st.prntscr.com/2025/12/17/0541/img/page-bg.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/page-bg.png — 200 — 6.9 KiB — 32 ms — h3https://st.prntscr.com/2025/12/17/0541/img/header-logo.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/header-logo.png — 200 — 7.8 KiB — 31 ms — h3https://connect.facebook.net/en_US/all.jsconnect.facebook.net/en_US/all.js https://connect.facebook.net/en_US/all.js — 200 — 1.8 KiB — 68 ms — h3https://platform.twitter.com/widgets.jsplatform.twitter.com/widgets.js https://platform.twitter.com/widgets.js — 200 — 27.3 KiB — 130 ms — h2https://prnt.sc/manifest.json/manifest.json https://prnt.sc/manifest.json — 200 — 786 B — 387 ms — h3https://st.prntscr.com/2025/12/17/0541/img/button-download.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/button-download.png — 200 — 597 B — 30 ms — h3https://st.prntscr.com/2025/12/17/0541/img/button-icon-sep.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/button-icon-sep.png — 200 — 321 B — 49 ms — h3https://st.prntscr.com/2025/12/17/0541/img/icon-twitter_gscale.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/icon-twitter_gscale.png — 200 — 657 B — 57 ms — h3https://st.prntscr.com/2025/12/17/0541/img/icon-facebook_gscale.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/icon-facebook_gscale.png — 200 — 579 B — 37 ms — h3https://st.prntscr.com/2025/12/17/0541/img/cloud_bg.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/cloud_bg.png — 200 — 2.0 KiB — 47 ms — h3https://st.prntscr.com/2025/12/17/0541/img/button_bg.gifst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/button_bg.gif — 200 — 490 B — 47 ms — h3https://st.prntscr.com/2025/12/17/0541/img/cloud_progressbar_bg.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/cloud_progressbar_bg.png — 200 — 1.4 KiB — 56 ms — h3https://st.prntscr.com/2025/12/17/0541/img/cloud_progressbar_active.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/cloud_progressbar_active.png — 200 — 2.5 KiB — 56 ms — h3https://st.prntscr.com/2025/12/17/0541/img/uploader_link_bg.gifst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/uploader_link_bg.gif — 200 — 1.5 KiB — 56 ms — h3https://st.prntscr.com/2025/12/17/0541/img/twitter-logo.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/twitter-logo.png — 200 — 1.1 KiB — 54 ms — h3https://api.prntscr.com/v1/api.prntscr.com/v1/ https://api.prntscr.com/v1/ — 204 — 0 B — 151 ms — h3https://prntscr.com/twitter.json?callback=twitterProcessJSONprntscr.com/twitter.json?callback=t... https://prntscr.com/twitter.json?callback=twitterProcessJSON — 500 — 158 B — 390 ms — h3https://connect.facebook.net/en_US/all.js?hash=7591b7065a37fb06402075fc23cb3c57connect.facebook.net/en_US/all.js?h... https://connect.facebook.net/en_US/all.js?hash=7591b7065a37fb06402075fc23cb3c57 — 200 — 84.0 KiB — 59 ms — h3https://www.google-analytics.com/j/collect?v=1&_v=j102&a=673416084&t=pageview&_s=1&dl=https%3A%2F%2Fprnt.sc%2F&ul=en-us&dt=Lightshot%20%E2%80%94%20screenshot%20tool%20for%20Mac%20%26%20Win&sr=800x600&vp=1350x940&_u=IEBAAEABAAAAACAAI~&jid=1915859875&gjid=216139899&cid=893159864.1776894501&tid=UA-12353127-1&_gid=531061130.1776894501&_r=1&_slc=1&z=1201143068www.google-analytics.com/j/collect?... https://www.google-analytics.com/j/collect?v=1&_v=j102&a=673416084&t=pageview&_s=1&dl=https%3A%2F%2Fprnt.sc%2F&ul=en-us&dt=Lightshot%20%E2%80%94%20screenshot%20tool%20for%20Mac%20%26%20Win&sr=800x600&vp=1350x940&_u=IEBAAEABAAAAACAAI~&jid=1915859875&gjid=216139899&cid=893159864.1776894501&tid=UA-12353127-1&_gid=531061130.1776894501&_r=1&_slc=1&z=1201143068 — 200 — 446 B — 30 ms — h2
0 ms 500 ms 1.0 s 1.5 s FCP 790 ms LCP 1.2 shttps://prnt.sc// https://prnt.sc/ — 200 — 5.3 KiB — 135 ms — h3https://st.prntscr.com/2025/12/17/0541/css/main.cssst.prntscr.com/2025/12/17/0541/css/... https://st.prntscr.com/2025/12/17/0541/css/main.css — 200 — 9.1 KiB — 76 ms — h3https://st.prntscr.com/2025/12/17/0541/js/jquery.1.8.2.min.jsst.prntscr.com/2025/12/17/0541/js/j... https://st.prntscr.com/2025/12/17/0541/js/jquery.1.8.2.min.js — 200 — 32.9 KiB — 110 ms — h3https://st.prntscr.com/2025/12/17/0541/js/script.mix.jsst.prntscr.com/2025/12/17/0541/js/s... https://st.prntscr.com/2025/12/17/0541/js/script.mix.js — 200 — 23.9 KiB — 101 ms — h3https://st.prntscr.com/2025/12/17/0541/img/footer-logo.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/footer-logo.png — 200 — 908 B — 56 ms — h3https://st.prntscr.com/2025/12/17/0541/css/jquery.smartbanner.cssst.prntscr.com/2025/12/17/0541/css/... https://st.prntscr.com/2025/12/17/0541/css/jquery.smartbanner.css — 200 — 1.4 KiB — 138 ms — h3https://st.prntscr.com/2025/12/17/0541/js/jquery.smartbanner.jsst.prntscr.com/2025/12/17/0541/js/j... https://st.prntscr.com/2025/12/17/0541/js/jquery.smartbanner.js — 200 — 3.0 KiB — 35 ms — h3https://www.googletagmanager.com/gtag/js?id=G-STH272KG8Xwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-STH272KG8X — 200 — 151.8 KiB — 173 ms — h2https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.jspagead2.googlesyndication.com/pagea... https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js — 200 — 54.2 KiB — 134 ms — h3https://quantcast.mgr.consensu.org/choice/n-ZGqfdsg5894/prnt.sc/choice.jsquantcast.mgr.consensu.org/choice/n... https://quantcast.mgr.consensu.org/choice/n-ZGqfdsg5894/prnt.sc/choice.js — -1 — 0 B — 28 ms — https://www.google-analytics.com/analytics.jswww.google-analytics.com/analytics.... https://www.google-analytics.com/analytics.js — 200 — 20.9 KiB — 114 ms — h2https://st.prntscr.com/2025/12/17/0541/img/page-bg.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/page-bg.png — 200 — 6.9 KiB — 32 ms — h3https://st.prntscr.com/2025/12/17/0541/img/header-logo.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/header-logo.png — 200 — 7.8 KiB — 31 ms — h3https://connect.facebook.net/en_US/all.jsconnect.facebook.net/en_US/all.js https://connect.facebook.net/en_US/all.js — 200 — 1.8 KiB — 68 ms — h3https://platform.twitter.com/widgets.jsplatform.twitter.com/widgets.js https://platform.twitter.com/widgets.js — 200 — 27.3 KiB — 130 ms — h2https://prnt.sc/manifest.json/manifest.json https://prnt.sc/manifest.json — 200 — 786 B — 387 ms — h3https://st.prntscr.com/2025/12/17/0541/img/button-download.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/button-download.png — 200 — 597 B — 30 ms — h3https://st.prntscr.com/2025/12/17/0541/img/button-icon-sep.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/button-icon-sep.png — 200 — 321 B — 49 ms — h3https://st.prntscr.com/2025/12/17/0541/img/icon-twitter_gscale.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/icon-twitter_gscale.png — 200 — 657 B — 57 ms — h3https://st.prntscr.com/2025/12/17/0541/img/icon-facebook_gscale.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/icon-facebook_gscale.png — 200 — 579 B — 37 ms — h3https://st.prntscr.com/2025/12/17/0541/img/cloud_bg.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/cloud_bg.png — 200 — 2.0 KiB — 47 ms — h3https://st.prntscr.com/2025/12/17/0541/img/button_bg.gifst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/button_bg.gif — 200 — 490 B — 47 ms — h3https://st.prntscr.com/2025/12/17/0541/img/cloud_progressbar_bg.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/cloud_progressbar_bg.png — 200 — 1.4 KiB — 56 ms — h3https://st.prntscr.com/2025/12/17/0541/img/cloud_progressbar_active.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/cloud_progressbar_active.png — 200 — 2.5 KiB — 56 ms — h3https://st.prntscr.com/2025/12/17/0541/img/uploader_link_bg.gifst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/uploader_link_bg.gif — 200 — 1.5 KiB — 56 ms — h3https://st.prntscr.com/2025/12/17/0541/img/twitter-logo.pngst.prntscr.com/2025/12/17/0541/img/... https://st.prntscr.com/2025/12/17/0541/img/twitter-logo.png — 200 — 1.1 KiB — 54 ms — h3https://api.prntscr.com/v1/api.prntscr.com/v1/ https://api.prntscr.com/v1/ — 204 — 0 B — 151 ms — h3https://prntscr.com/twitter.json?callback=twitterProcessJSONprntscr.com/twitter.json?callback=t... https://prntscr.com/twitter.json?callback=twitterProcessJSON — 500 — 158 B — 390 ms — h3https://connect.facebook.net/en_US/all.js?hash=7591b7065a37fb06402075fc23cb3c57connect.facebook.net/en_US/all.js?h... https://connect.facebook.net/en_US/all.js?hash=7591b7065a37fb06402075fc23cb3c57 — 200 — 84.0 KiB — 59 ms — h3https://www.google-analytics.com/j/collect?v=1&_v=j102&a=673416084&t=pageview&_s=1&dl=https%3A%2F%2Fprnt.sc%2F&ul=en-us&dt=Lightshot%20%E2%80%94%20screenshot%20tool%20for%20Mac%20%26%20Win&sr=800x600&vp=1350x940&_u=IEBAAEABAAAAACAAI~&jid=1915859875&gjid=216139899&cid=893159864.1776894501&tid=UA-12353127-1&_gid=531061130.1776894501&_r=1&_slc=1&z=1201143068www.google-analytics.com/j/collect?... 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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
71% of JavaScript execution is third-party
First-party Third-party 176ms · 206KB · $2/mo
Unattributable
Other
Optional
Execution 66ms
Transfer 0 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 57ms
Transfer 152 KB
Unused 42%
Monthly Cost $1/mo
pagead2.googlesyndication.com
Other
Optional
Execution 52ms
Transfer 54 KB
Unused 48%
Monthly Cost $1/mo

71% 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

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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