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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
74
GRADE
C
FIX
5
REVIEW
2
PASS
8
INFO
2

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

Mobile Desktop
32
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
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.
83
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.

3.43 s

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

18.17 s

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

2.27 s

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.

8.65 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.

18.79 s

Page Load Progression

454 ms
907 ms
1.4 s
1.8 s
2.3 s
2.7 s
3.2 s
3.6 s
Checks
17
8 PASS 2 REVIEW 5 FIX
F
Page Weight Budget
Action
3.6 MB transferred, 57 requests
FIX
3.6 MB transferred, 57 requests
Warning::
Page weighs 5.8 MB (3.6 MB transferred)
Warning::
Images are 3.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.0 MB
Info::
57 HTTP requests
Info::
Estimated 0.76 g CO2 per page load
3.6 MB / 2.4 MB budget
3.6 MB transferred
57 requests
0.76 g CO2 per page load
Images 3.0 MiB 84%
JavaScript 448.9 KiB 12%
Fonts 90.7 KiB 2%
CSS 38.4 KiB 1%
HTML 23.7 KiB 1%
Other 7.1 KiB 0%
Other 4.6 KiB 0%
Other 972 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

D
Third-Party Impact
Action
98% third-party, 0 ms blocking
FIX
98% third-party, 0 ms blocking
Warning::
Third-party code accounts for 98% of page weight (3.6 MiB of 3.6 MiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
F
JS Execution Cost
Action
9738ms total JS execution
FIX
9738ms total JS execution
Warning::
https://consent.cookiebot.com/d10f7659-aa82-4007-9...: 7111ms CPU time
Warning::
Unattributable: 910ms CPU time
Warning::
https://static.tutsplus.com/packs/js/lazy_load_thi...: 499ms CPU time
Warning::
https://static.tutsplus.com/packs/js/global_nav_sc...: 305ms CPU time
Info::
https://static.tutsplus.com/packs/js/708-4243b6180...: 215ms CPU time
Warning::
Third-party scripts: 9500ms (98% of total)

Main Thread Breakdown

Parse HTML & CSS 48% Script Evaluation 36% Other 9% Style & Layout 4%
ScriptTotalScriptingParse/CompileParty
https://consent.cookiebot.com/d10f7659-aa82-4007-9cf1-54a9496002bf/cc.js?renew=false&referer=tutsplus.com&dnt=false&init=false&framework=TCFv2.3&georegions=%5B%7B%22r%22%3A%22US%22%2C%22i%22%3A%22d9683f70-895f-4427-97dc-f1087cddf9d8%22%7D%5D7111ms2284ms115ms3rd
Unattributable910ms129ms0ms3rd
https://static.tutsplus.com/packs/js/lazy_load_third_party_libraries-44fb1350b8b341c62e5e.js499ms444ms1ms3rd
https://static.tutsplus.com/packs/js/global_nav_scroll-9d8dceb5e78d64bf23b6.js305ms33ms1ms3rd
https://static.tutsplus.com/packs/js/708-4243b61808ccf3e411ca.js215ms191ms4ms3rd
https://tutsplus.com/packs/js/89-cee648684cde002bc619.chunk.js152ms109ms10ms1st
https://consent.cookiebot.com/uc.js147ms127ms9ms3rd
https://static.tutsplus.com/packs/js/692-7bfa88a42c142cf762c1.js122ms10ms17ms3rd
https://static.tutsplus.com/packs/js/672-2e68c340144c189870b4.js113ms91ms18ms3rd
https://tutsplus.com/86ms14ms3ms1st

Showing top 10 of 11 scripts

D
Page Weight Inventory
Action
57 resources · 3.6 MB · 108 KB savings available
FIX
57 resources · 3.6 MB · 108 KB savings available
Warning::
Page weight 2.6 MB over 1MB target
Got: 3.6 MB Expected: ≤ 1 MB
Info::
~108 KB of savings available
Warning::
53 third-party resources (98% of weight)
Info::
5 resources over 200KB
57 resources · 3.6 MiB · 53 third-party 2.6 MiB over 1MB target
Image 84% · 3.1 MiB
JavaScript 12% · 448.9 KiB
Font 2% · 90.7 KiB
CSS 1% · 38.4 KiB
Document 1% · 28.2 KiB
Other 0% · 972 B

~107.9 KiB of savings available

Remove unused JavaScript: 107.9 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
Image Optimization
Action
31 images, 0 KB saveable
REVIEW
31 images, 0 KB saveable
Warning::
https://static.tutsplus.com/packs/static/images/en... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cms-assets.tutsplus.com/cdn-cgi/image/widt... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://s3.amazonaws.com/cms-assets.tutsplus.com/u... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cms-assets.tutsplus.com/cdn-cgi/image/widt... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cms-assets.tutsplus.com/uploads/users/2056... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cms-assets.tutsplus.com/cdn-cgi/image/widt... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://s3.amazonaws.com/cms-assets.tutsplus.com/u... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cms-assets.tutsplus.com/cdn-cgi/image/widt... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cms-assets.tutsplus.com/cdn-cgi/image/widt... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
31 images 3.0 MB
0 oversized -0 KB
19 legacy format
9 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

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

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

B
JS Bundles
13 scripts, 108 KB unused
REVIEW
13 scripts, 108 KB unused
Warning::
https://consent.cookiebot.com/Framework/IAB/consen...: 64 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://consent.cookiebot.com/uc.js: 22 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.tutsplus.com/packs/js/672-2e68c3401...: 21 KB unused (61%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 108 KB
108 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://consent.cookiebot.com/Framework/IAB/consent-sdk-2.3.js88 KB64 KB (73%)✓3rd
https://consent.cookiebot.com/uc.js36 KB22 KB (63%)✓3rd
https://static.tutsplus.com/packs/js/672-2e68c340144c189870b4.js35 KB21 KB (61%)✓3rd
https://static.tutsplus.com/packs/js/549-4d1fd28812a1ba250bb3.js8 KB—✓3rd
https://static.tutsplus.com/packs/js/145-7f0987dd04a2e1f2d506.js12 KB—✓3rd
https://static.tutsplus.com/packs/js/runtime-cfa8f84ac0c334e3eb29.js2 KB—✓3rd
https://static.tutsplus.com/packs/js/708-4243b61808ccf3e411ca.js11 KB—✓3rd
https://static.tutsplus.com/packs/js/home-27ec78847d24c06cd61c.js2 KB—✓3rd
https://static.tutsplus.com/packs/js/global_nav_scroll-9d8dceb5e78d64bf23b6.js1 KB—✓3rd
https://static.tutsplus.com/packs/js/lazy_load_third_party_libraries-44fb1350b8b341c62e5e.js2 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

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
5 fonts (91 KB)
PASS
5 fonts (91 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

91 KB total

Render-blocking

0

of 5

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 14.0 s 16.0 s 18.0 s FCP 3.4 s LCP 18.2 shttps://static.tutsplus.com/packs/static/fonts/fa-solid-900-130191cbdfe1d7a5dde9.woff2fa-solid-900-130191cbdf... https://static.tutsplus.com/packs/static/fonts/fa-solid-900-130191cbdfe1d7a5dde9.woff2 — 4.8 KiB — 102 ms — font-display: swaphttps://static.tutsplus.com/packs/static/fonts/fa-regular-400-7b8124cb811f19c72e48.woff2fa-regular-400-7b8124cb... https://static.tutsplus.com/packs/static/fonts/fa-regular-400-7b8124cb811f19c72e48.woff2 — 1.4 KiB — 101 ms — font-display: swaphttps://static.tutsplus.com/packs/static/fonts/fa-brands-400-78547c4b11a377e195ff.woff2fa-brands-400-78547c4b1... https://static.tutsplus.com/packs/static/fonts/fa-brands-400-78547c4b11a377e195ff.woff2 — 2.9 KiB — 96 ms — font-display: swaphttps://static.tutsplus.com/packs/static/fonts/PolySans-Median-92c28d173e4648cb5bf2.otfPolySans-Median-92c28d1... https://static.tutsplus.com/packs/static/fonts/PolySans-Median-92c28d173e4648cb5bf2.otf — 41.7 KiB — 62 ms — font-display: swaphttps://static.tutsplus.com/packs/static/fonts/PolySans-Neutral-24930e8a391bcab05b9b.otfPolySans-Neutral-24930e... https://static.tutsplus.com/packs/static/fonts/PolySans-Neutral-24930e8a391bcab05b9b.otf — 39.9 KiB — 78 ms — font-display: swap
fa-solid-900-130191cbdf... woff2 swap
Size 5 KB
Load time 102 ms
Start 95 ms
Risk FOUT — text flashes from fallback to web font
fa-regular-400-7b8124cb... woff2 swap
Size 1 KB
Load time 101 ms
Start 96 ms
Risk FOUT — text flashes from fallback to web font
fa-brands-400-78547c4b1... woff2 swap
Size 3 KB
Load time 96 ms
Start 96 ms
Risk FOUT — text flashes from fallback to web font
PolySans-Median-92c28d1... otf swap
Size 42 KB
Load time 62 ms
Start 458 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
PolySans-Neutral-24930e... otf swap
Size 40 KB
Load time 78 ms
Start 458 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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)

Fixing the unchecked items could save ~24 KB and ~48 ms

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
57 requests over 3256ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s FCP 3.4 s LCP 18.2 shttps://tutsplus.com// https://tutsplus.com/ — 200 — 22.9 KiB — 86 ms — h2https://static.tutsplus.com/packs/static/fonts/fa-solid-900-130191cbdfe1d7a5dde9.woff2static.tutsplus.com/packs/static/fo... https://static.tutsplus.com/packs/static/fonts/fa-solid-900-130191cbdfe1d7a5dde9.woff2 — 200 — 4.8 KiB — 102 ms — h3https://static.tutsplus.com/packs/static/fonts/fa-regular-400-7b8124cb811f19c72e48.woff2static.tutsplus.com/packs/static/fo... https://static.tutsplus.com/packs/static/fonts/fa-regular-400-7b8124cb811f19c72e48.woff2 — 200 — 1.4 KiB — 101 ms — h3https://static.tutsplus.com/packs/static/fonts/fa-brands-400-78547c4b11a377e195ff.woff2static.tutsplus.com/packs/static/fo... https://static.tutsplus.com/packs/static/fonts/fa-brands-400-78547c4b11a377e195ff.woff2 — 200 — 2.9 KiB — 96 ms — h3https://static.tutsplus.com/packs/js/runtime-cfa8f84ac0c334e3eb29.jsstatic.tutsplus.com/packs/js/runtim... https://static.tutsplus.com/packs/js/runtime-cfa8f84ac0c334e3eb29.js — 200 — 2.0 KiB — 120 ms — h3https://static.tutsplus.com/packs/js/692-7bfa88a42c142cf762c1.jsstatic.tutsplus.com/packs/js/692-7b... https://static.tutsplus.com/packs/js/692-7bfa88a42c142cf762c1.js — 200 — 29.7 KiB — 168 ms — h3https://static.tutsplus.com/packs/js/708-4243b61808ccf3e411ca.jsstatic.tutsplus.com/packs/js/708-42... https://static.tutsplus.com/packs/js/708-4243b61808ccf3e411ca.js — 200 — 11.0 KiB — 150 ms — h3https://static.tutsplus.com/packs/js/549-4d1fd28812a1ba250bb3.jsstatic.tutsplus.com/packs/js/549-4d... https://static.tutsplus.com/packs/js/549-4d1fd28812a1ba250bb3.js — 200 — 8.4 KiB — 123 ms — h3https://static.tutsplus.com/packs/js/145-7f0987dd04a2e1f2d506.jsstatic.tutsplus.com/packs/js/145-7f... https://static.tutsplus.com/packs/js/145-7f0987dd04a2e1f2d506.js — 200 — 12.2 KiB — 173 ms — h3https://static.tutsplus.com/packs/css/672-94e574c8.cssstatic.tutsplus.com/packs/css/672-9... https://static.tutsplus.com/packs/css/672-94e574c8.css — 200 — 11.8 KiB — 151 ms — h3https://static.tutsplus.com/packs/css/home-4c15e585.cssstatic.tutsplus.com/packs/css/home-... https://static.tutsplus.com/packs/css/home-4c15e585.css — 200 — 12.0 KiB — 151 ms — h3https://tutsplus.com/tailwind.css/tailwind.css https://tutsplus.com/tailwind.css — 200 — 14.6 KiB — 251 ms — h2https://static.tutsplus.com/packs/static/images/home_hero_002-c78611bbb9a7b6a10bb5.avifstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/home_hero_002-c78611bbb9a7b6a10bb5.avif — 200 — 79.1 KiB — 180 ms — h3https://consent.cookiebot.com/uc.jsconsent.cookiebot.com/uc.js https://consent.cookiebot.com/uc.js — 200 — 35.7 KiB — 75 ms — h2https://s3.amazonaws.com/cms-assets.tutsplus.com/uploads/users/2604/email_settings/home_page/backgroundImage/JOB_843_TutsDesignUpdates_EmailPromoBanner.pngs3.amazonaws.com/cms-assets.tutsplu... https://s3.amazonaws.com/cms-assets.tutsplus.com/uploads/users/2604/email_settings/home_page/backgroundImage/JOB_843_TutsDesignUpdates_EmailPromoBanner.png — 200 — 180.2 KiB — 657 ms — http/1.1https://static.tutsplus.com/packs/static/images/envato-tutsplus-dark-da1bf6c5a7fd83433e94.pngstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/envato-tutsplus-dark-da1bf6c5a7fd83433e94.png — 200 — 31.8 KiB — 94 ms — h3https://static.tutsplus.com/packs/static/images/home/AI_stack_banner-04d706a7c37624c38236.svgstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/home/AI_stack_banner-04d706a7c37624c38236.svg — 200 — 628.4 KiB — 129 ms — h3https://static.tutsplus.com/packs/js/672-2e68c340144c189870b4.jsstatic.tutsplus.com/packs/js/672-2e... https://static.tutsplus.com/packs/js/672-2e68c340144c189870b4.js — 200 — 35.3 KiB — 159 ms — h3https://static.tutsplus.com/packs/js/home-27ec78847d24c06cd61c.jsstatic.tutsplus.com/packs/js/home-2... https://static.tutsplus.com/packs/js/home-27ec78847d24c06cd61c.js — 200 — 1.9 KiB — 157 ms — h3https://static.tutsplus.com/packs/js/global_nav_scroll-9d8dceb5e78d64bf23b6.jsstatic.tutsplus.com/packs/js/global... https://static.tutsplus.com/packs/js/global_nav_scroll-9d8dceb5e78d64bf23b6.js — 200 — 1.4 KiB — 158 ms — h3https://static.tutsplus.com/packs/static/images/thumbs-up-grey-09612e6ebbbe82fb8eb3.svgstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/thumbs-up-grey-09612e6ebbbe82fb8eb3.svg — 200 — 997 B — 158 ms — h3https://static.tutsplus.com/packs/static/images/TutsDesignUpdates_YoutubePromoBanner_Mobile-ec04916008a45d14e324.pngstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/TutsDesignUpdates_YoutubePromoBanner_Mobile-ec04916008a45d14e324.png — 200 — 252.6 KiB — 208 ms — h3https://static.tutsplus.com/packs/static/images/TutsDesignUpdates_YoutubePromoBanner_Desktop-226877125d29c236cd9b.pngstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/TutsDesignUpdates_YoutubePromoBanner_Desktop-226877125d29c236cd9b.png — 200 — 601.6 KiB — 221 ms — h3https://static.tutsplus.com/packs/static/images/ai_icon-48d355745542bc2efdc6.pngstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/ai_icon-48d355745542bc2efdc6.png — 200 — 871 B — 158 ms — h3https://static.tutsplus.com/packs/static/images/AI_LandingPage_FooterBanner_Mobile-7b931bcdc5fe09dfb374.pngstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/AI_LandingPage_FooterBanner_Mobile-7b931bcdc5fe09dfb374.png — 200 — 165.5 KiB — 207 ms — h3https://static.tutsplus.com/packs/static/images/AI_LandingPage_FooterBanner_Tablet-cfcf92cb18b21ec3b0a5.pngstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/AI_LandingPage_FooterBanner_Tablet-cfcf92cb18b21ec3b0a5.png — 200 — 133.8 KiB — 202 ms — h3https://static.tutsplus.com/packs/static/images/AI_LandingPage_FooterBanner_Desktop-97f02583fc44f999cffb.pngstatic.tutsplus.com/packs/static/im... https://static.tutsplus.com/packs/static/images/AI_LandingPage_FooterBanner_Desktop-97f02583fc44f999cffb.png — 200 — 330.4 KiB — 213 ms — h3https://static.tutsplus.com/packs/js/lazy_load_third_party_libraries-44fb1350b8b341c62e5e.jsstatic.tutsplus.com/packs/js/lazy_l... https://static.tutsplus.com/packs/js/lazy_load_third_party_libraries-44fb1350b8b341c62e5e.js — 200 — 1.8 KiB — 157 ms — h3https://consentcdn.cookiebot.com/consentconfig/d10f7659-aa82-4007-9cf1-54a9496002bf/settings.jsonconsentcdn.cookiebot.com/consentcon... https://consentcdn.cookiebot.com/consentconfig/d10f7659-aa82-4007-9cf1-54a9496002bf/settings.json — 200 — 972 B — 57 ms — h2https://consent.cookiebot.com/Framework/IAB/consent-sdk-2.3.jsconsent.cookiebot.com/Framework/IAB... https://consent.cookiebot.com/Framework/IAB/consent-sdk-2.3.js — 200 — 87.9 KiB — 28 ms — h2
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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
98% of JavaScript execution is third-party
First-party Third-party 9500ms · 398KB · $126/mo
consent.cookiebot.com
Other
Costly
Execution 7111ms
Transfer 195 KB
Monthly Cost $94/mo
Unattributable
Other
Costly
Execution 910ms
Transfer 0 KB
Monthly Cost $12/mo
static.tutsplus.com
Other
Costly
Execution 499ms
Transfer 2 KB
Monthly Cost $7/mo
static.tutsplus.com
Other
Costly
Execution 305ms
Transfer 1 KB
Monthly Cost $4/mo
static.tutsplus.com
Other
Costly
Execution 215ms
Transfer 11 KB
Monthly Cost $3/mo
consent.cookiebot.com
Other
Optional
Execution 147ms
Transfer 36 KB
Unused 63%
Monthly Cost $2/mo
static.tutsplus.com
Other
Optional
Execution 122ms
Transfer 30 KB
Monthly Cost $2/mo
static.tutsplus.com
Other
Optional
Execution 113ms
Transfer 35 KB
Unused 61%
Monthly Cost $2/mo
consent.cookiebot.com
Other
Optional
Execution 77ms
Transfer 88 KB
Unused 73%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • consent.cookiebot.com adds 7111ms and costs ~$94/month
  • Unattributable adds 910ms and costs ~$12/month
  • static.tutsplus.com adds 499ms and costs ~$7/month
  • static.tutsplus.com adds 305ms and costs ~$4/month
  • static.tutsplus.com adds 215ms and costs ~$3/month

98% 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

consent.cookiebot.com takes 7111ms 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 910ms 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

static.tutsplus.com takes 499ms 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

static.tutsplus.com takes 305ms 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

static.tutsplus.com takes 215ms 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

63% of consent.cookiebot.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

61% of static.tutsplus.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

73% of consent.cookiebot.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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