Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

Performance

Accessibility

Best Practices

SEO

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

7.64 s

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

27.42 s

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

5.14 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.

9.13 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.

30.99 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

8 PASS 1 REVIEW 6 FIX

Page Weight Budget

Action

4.1 MB transferred, 233 requests

FIX

4.1 MB transferred, 233 requests

Page weighs 13.5 MB (4.1 MB transferred)

JavaScript is 2.9 MB — consider code splitting or lazy loading

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Got: 2.9 MB

233 HTTP requests — consider bundling or reducing

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

Estimated 0.86 g CO2 per page load

4.1 MB transferred

233 requests

0.86 g CO2 per page load

JavaScript 2.9 MiB 70%

Images 992.6 KiB 24%

Other 132.8 KiB 3%

HTML 72.0 KiB 2%

Other 26.2 KiB 1%

Other 11.6 KiB 0%

CSS 10.3 KiB 0%

Other 432 B 0%

Other 0 B 0%

0 2.4 MB 4.9 MB

Over 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

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

Why this matters

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

Source: web.dev

Third-Party Impact

Action

100% third-party, 0 ms blocking

FIX

100% third-party, 0 ms blocking

Third-party code accounts for 100% of page weight (4.1 MiB of 4.1 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

JS Execution Cost

Action

12238ms total JS execution

FIX

12238ms total JS execution

https://connect.facebook.net/signals/config/169485...: 1274ms CPU time

https://connect.facebook.net/signals/config/152291...: 1188ms CPU time

https://2hgw8wfhuhaugq2vz.ay.delivery/manager-scri...: 1013ms CPU time

Unattributable: 950ms CPU time

https://www.wonderhowto.com/: 914ms CPU time

Third-party scripts: 12238ms (100% of total)

Main Thread Breakdown

Script Evaluation 72% Other 10% Style & Layout 8% Script Parsing & Compilation 7%

Script	Total	Scripting	Parse/Compile	Party
https://connect.facebook.net/signals/config/1694856440786573?v=2.9.303&r=stable&domain=www.wonderhowto.com&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168%2C228%2C227%2C222%2C224%2C225%2C226%2C223%2C211%2C221%2C193%2C190%2C191%2C185%2C189%2C192%2C188%2C183%2C316%2C196%2C215%2C184%2C182%2C235%2C206%2C176%2C177%2C172%2C178%2C175%2C173%2C174%2C171%2C169%2C180%2C181%2C179%2C265%2C315%2C194%2C238%2C239%2C244%2C241%2C243%2C242%2C240%2C237%2C252%2C248%2C249%2C247%2C253%2C250%2C246%2C251%2C245%2C233%2C210	1274ms	1248ms	6ms	3rd
https://connect.facebook.net/signals/config/1522913644386643?v=2.9.303&r=stable&domain=www.wonderhowto.com&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168%2C228%2C227%2C222%2C224%2C225%2C226%2C223%2C211%2C221%2C193%2C190%2C191%2C185%2C189%2C192%2C188%2C183%2C316%2C196%2C215%2C184%2C182%2C235%2C206%2C176%2C177%2C172%2C178%2C175%2C173%2C174%2C171%2C169%2C180%2C181%2C179%2C265%2C315%2C194%2C238%2C239%2C244%2C241%2C243%2C242%2C240%2C237%2C252%2C248%2C249%2C247%2C253%2C250%2C246%2C251%2C245	1188ms	1105ms	7ms	3rd
https://2hgw8wfhuhaugq2vz.ay.delivery/manager-script/yield-manager-script-v3.10.0-prod	1013ms	867ms	17ms	3rd
Unattributable	950ms	56ms	0ms	3rd
https://www.wonderhowto.com/	914ms	100ms	33ms	3rd
https://connect.facebook.net/signals/config/861593688406080?v=2.9.303&r=stable&domain=www.wonderhowto.com&hme=97937018cefade17726f0472876fc101316b2ce9008a35a6a5a7977d7436151a&ex_m=104%2C205%2C154%2C22%2C72%2C73%2C145%2C68%2C67%2C11%2C162%2C90%2C16%2C138%2C127%2C39%2C75%2C78%2C134%2C159%2C164%2C8%2C4%2C5%2C7%2C6%2C3%2C91%2C101%2C165%2C170%2C219%2C62%2C186%2C187%2C55%2C276%2C30%2C74%2C231%2C230%2C229%2C23%2C33%2C103%2C61%2C10%2C63%2C97%2C98%2C99%2C105%2C130%2C31%2C29%2C132%2C133%2C129%2C128%2C155%2C76%2C158%2C156%2C157%2C50%2C60%2C123%2C15%2C161%2C45%2C263%2C264%2C262%2C26%2C27%2C28%2C48%2C146%2C77%2C112%2C18%2C20%2C44%2C40%2C42%2C41%2C83%2C92%2C96%2C110%2C144%2C147%2C46%2C111%2C24%2C21%2C119%2C69%2C36%2C149%2C148%2C150%2C141%2C139%2C25%2C35%2C59%2C109%2C160%2C70%2C17%2C152%2C114%2C81%2C66%2C19%2C85%2C86%2C116%2C84%2C136%2C135%2C34%2C278%2C293%2C212%2C201%2C202%2C200%2C296%2C288%2C52%2C213%2C107%2C131%2C80%2C121%2C54%2C47%2C49%2C113%2C120%2C126%2C58%2C64%2C151%2C115%2C37%2C32%2C53%2C56%2C100%2C163%2C1%2C124%2C14%2C122%2C12%2C2%2C57%2C93%2C65%2C118%2C89%2C88%2C166%2C167%2C94%2C95%2C9%2C125%2C102%2C51%2C142%2C87%2C79%2C71%2C117%2C106%2C43%2C143%2C0%2C82%2C137%2C140%2C153%2C38%2C108%2C13%2C168%2C228%2C227%2C222%2C224%2C225%2C226%2C223%2C211%2C221%2C193%2C190%2C191%2C185%2C189%2C192%2C188%2C183%2C316%2C196%2C215%2C184%2C182%2C235%2C206%2C176%2C177%2C172%2C178%2C175%2C173%2C174%2C171%2C169%2C180%2C181%2C179%2C265%2C315%2C194%2C238%2C239%2C244%2C241%2C243%2C242%2C240%2C237%2C252%2C248%2C249%2C247%2C253%2C250%2C246%2C251%2C245	777ms	729ms	6ms	3rd
https://ob.forseasky.com/i/b65d7d7005337f7bd4bd291d1d48ebb9.js	506ms	405ms	10ms	3rd
https://cmp.inmobi.com/tcfv2/61/cmp2ui-en.js	483ms	313ms	38ms	3rd
https://cmp.inmobi.com/tcfv2/cmp2.js?referer=wonderhowto.com	471ms	303ms	43ms	3rd
https://connect.facebook.net/en_US/fbevents.js	375ms	315ms	40ms	3rd

Showing top 10 of 37 scripts

JS Bundles

Action

73 scripts, 1.4 MB unused

FIX

73 scripts, 1.4 MB unused

https://cdn.taboola.com/libtrc/technologyadvice-ne...: 232 KB unused (73%)

Consider code splitting or tree shaking to reduce unused code.

https://pagead2.googlesyndication.com/pagead/manag...: 150 KB unused (84%)

Consider code splitting or tree shaking to reduce unused code.

https://securepubads.g.doubleclick.net/pagead/mana...: 124 KB unused (66%)

Consider code splitting or tree shaking to reduce unused code.

https://2hgw8wfhuhaugq2vz.ay.delivery/manager-scri...: 100 KB unused (69%)

Consider code splitting or tree shaking to reduce unused code.

https://cds.connatix.com/p/324082750/connatix.play...: 95 KB unused (68%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 1.4 MB

1403 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://cdn.taboola.com/libtrc/technologyadvice-network/loader.js	317 KB	232 KB (73%)	✓	3rd
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202604170101/show_ads_impl_fy2021.js	178 KB	150 KB (84%)	✓	3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js	188 KB	124 KB (66%)	✓	3rd
https://2hgw8wfhuhaugq2vz.ay.delivery/manager-script/2Hgw8wfHuhAuGq2vz.deploy?v=bnJS3BaDRbvgWHG5L	145 KB	100 KB (69%)	✓	3rd
https://cds.connatix.com/p/324082750/connatix.player.js?cid=9e857bcd-b137-450c-abcf-2838a1b053cb&pid=c9c0455f-9e02-4fd1-9e2c-d38b7bddb061	139 KB	95 KB (68%)	✓	3rd
https://2hgw8wfhuhaugq2vz.ay.delivery/floorPrice/2Hgw8wfHuhAuGq2vz/js/floorPrice/linreg.min.js	126 KB	86 KB (69%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=AW-613565886&cx=c&gtm=4e64k0	132 KB	81 KB (61%)	✓	3rd
https://www.googletagmanager.com/gtag/destination?id=AW-613565886&cx=c&gtm=4e64k0	173 KB	69 KB (40%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-F4QYM9R20N&cx=c&gtm=4e64k0	161 KB	63 KB (39%)	✓	3rd
https://cmp.inmobi.com/tcfv2/61/cmp2ui-en.js	125 KB	60 KB (48%)	✓	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

Page Weight Inventory

Action

233 resources · 4.1 MB · 1.4 MB savings available

FIX

233 resources · 4.1 MB · 1.4 MB savings available

Page weight 3.1 MB over 1MB target

Got: 4.1 MB Expected: ≤ 1 MB

~1.4 MB of savings available

232 third-party resources (100% of weight)

1 resources over 200KB

233 resources · 4.1 MiB · 232 third-party 3.1 MiB over 1MB target

JavaScript 70% · 2.9 MiB

Image 24% · 995.9 KiB

Other 4% · 161.7 KiB

Document 2% · 72.5 KiB

CSS 0% · 10.3 KiB

~1.4 MiB of savings available

Remove unused JavaScript: 1.4 MiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

233 resources			4.1 MiB

HTTP Caching

Action

No cache headers

FIX

No cache headers

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.

Image Optimization

Action

89 images, 0 KB saveable

REVIEW

89 images, 0 KB saveable

https://assets.content.technologyadvice.com/medium... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://assets.content.technologyadvice.com/medium... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://assets.content.technologyadvice.com/medium... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://assets.content.technologyadvice.com/medium... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://assets.content.technologyadvice.com/thumbn... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://assets.content.technologyadvice.com/large_... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://assets.content.technologyadvice.com/medium... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

89 images 993 KB

0 oversized -0 KB

45 legacy format

7 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

A+

Text Compression

All text resources are compressed

PASS

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)

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

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

7 hints, 0 missing preconnects

PASS

7 hints, 0 missing preconnects

Page uses 7 resource hint(s)

Current Resource Hints

preconnect

—

preload

dns-prefetch

—

prefetch

—

7 resource hints configured

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

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

233 requests over 10101ms

INFO

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 12238ms · 2657KB · €133/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Facebook Pixel connect.facebook.net	Advertising	1274ms	17 KB	—	€14/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	1188ms	19 KB	—	€13/mo	Costly
2hgw8wfhuhaugq2vz.ay.delivery 2hgw8wfhuhaugq2vz.ay.delivery	Other	1013ms	49 KB	53%	€11/mo	Costly
Unattributable Unattributable	Other	950ms	0 KB	—	€10/mo	Costly
www.wonderhowto.com www.wonderhowto.com	Other	914ms	72 KB	—	€10/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	777ms	17 KB	—	€8/mo	Costly
ob.forseasky.com ob.forseasky.com	Other	506ms	45 KB	—	€6/mo	Costly
cmp.inmobi.com cmp.inmobi.com	Other	483ms	125 KB	48%	€5/mo	Costly
cmp.inmobi.com cmp.inmobi.com	Other	471ms	116 KB	49%	€5/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	375ms	97 KB	33%	€4/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	345ms	45 KB	—	€4/mo	Costly
Microsoft Clarity scripts.clarity.ms	Session Replay	291ms	25 KB	—	€3/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	282ms	161 KB	39%	€3/mo	Costly
2hgw8wfhuhaugq2vz.ay.delivery 2hgw8wfhuhaugq2vz.ay.delivery	Other	281ms	145 KB	69%	€3/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	277ms	173 KB	40%	€3/mo	Costly
cdn.taboola.com cdn.taboola.com	Other	261ms	317 KB	73%	€3/mo	Costly
static.wonderhowto.com static.wonderhowto.com	Other	249ms	9 KB	—	€3/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	222ms	128 KB	47%	€2/mo	Costly
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	217ms	188 KB	66%	€2/mo	Costly
obs.forseasky.com obs.forseasky.com	Other	210ms	3 KB	—	€2/mo	Costly
j.6sc.co j.6sc.co	Other	153ms	19 KB	—	€2/mo	Optional
pagead2.googlesyndication.com pagead2.googlesyndication.com	Other	153ms	178 KB	84%	€2/mo	Optional
cds.connatix.com cds.connatix.com	Other	130ms	139 KB	68%	€1/mo	Optional
pagead2.googlesyndication.com pagead2.googlesyndication.com	Other	118ms	0 KB	41%	€1/mo	Optional
pixel.ngtrack.relay.cool pixel.ngtrack.relay.cool	Other	112ms	21 KB	—	€1/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	111ms	132 KB	61%	€1/mo	Optional
static.wonderhowto.com static.wonderhowto.com	Other	105ms	15 KB	—	€1/mo	Optional
d-code.liadm.com d-code.liadm.com	Other	102ms	47 KB	—	€1/mo	Optional
www.wonderhowto.com www.wonderhowto.com	Other	98ms	0 KB	—	€1/mo	Optional
c.amazon-adsystem.com c.amazon-adsystem.com	Other	95ms	91 KB	43%	€1/mo	Optional
tags.clickagy.com tags.clickagy.com	Other	83ms	14 KB	—	€1/mo	Optional
2hgw8wfhuhaugq2vz.ay.delivery 2hgw8wfhuhaugq2vz.ay.delivery	Other	75ms	126 KB	69%	€1/mo	Optional
2hgw8wfhuhaugq2vz.ay.delivery 2hgw8wfhuhaugq2vz.ay.delivery	Other	72ms	36 KB	—	€1/mo	Optional
ak.sail-horizon.com ak.sail-horizon.com	Other	67ms	48 KB	68%	€1/mo	Optional
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	64ms	34 KB	—	€1/mo	Optional
config.aps.amazon-adsystem.com config.aps.amazon-adsystem.com	Other	62ms	1 KB	—	€1/mo	Optional
tags.srv.stackadapt.com tags.srv.stackadapt.com	Other	56ms	8 KB	—	€1/mo	Optional

Facebook Pixel

Advertising

Costly

Execution 1274ms

Transfer 17 KB

Monthly Cost €14/mo

Facebook Pixel

Advertising

Costly

Execution 1188ms

Transfer 19 KB

Monthly Cost €13/mo

2hgw8wfhuhaugq2vz.ay.delivery

Other

Costly

Execution 1013ms

Transfer 49 KB

Unused 53%

Monthly Cost €11/mo

Unattributable

Other

Costly

Execution 950ms

Transfer 0 KB

Monthly Cost €10/mo

www.wonderhowto.com

Other

Costly

Execution 914ms

Transfer 72 KB

Monthly Cost €10/mo

Facebook Pixel

Advertising

Costly

Execution 777ms

Transfer 17 KB

Monthly Cost €8/mo

ob.forseasky.com

Other

Costly

Execution 506ms

Transfer 45 KB

Monthly Cost €6/mo

cmp.inmobi.com

Other

Costly

Execution 483ms

Transfer 125 KB

Unused 48%

Monthly Cost €5/mo

cmp.inmobi.com

Other

Costly

Execution 471ms

Transfer 116 KB

Unused 49%

Monthly Cost €5/mo

Facebook Pixel

Advertising

Costly

Execution 375ms

Transfer 97 KB

Unused 33%

Monthly Cost €4/mo

Facebook Pixel

Advertising

Costly

Execution 345ms

Transfer 45 KB

Monthly Cost €4/mo

Microsoft Clarity

Session Replay

Costly

Execution 291ms

Transfer 25 KB

Monthly Cost €3/mo

Google Tag Manager

Tag Manager

Costly

Execution 282ms

Transfer 161 KB

Unused 39%

Monthly Cost €3/mo

2hgw8wfhuhaugq2vz.ay.delivery

Other

Costly

Execution 281ms

Transfer 145 KB

Unused 69%

Monthly Cost €3/mo

Google Tag Manager

Tag Manager

Costly

Execution 277ms

Transfer 173 KB

Unused 40%

Monthly Cost €3/mo

cdn.taboola.com

Other

Costly

Execution 261ms

Transfer 317 KB

Unused 73%

Monthly Cost €3/mo

static.wonderhowto.com

Other

Costly

Execution 249ms

Transfer 9 KB

Monthly Cost €3/mo

Google Tag Manager

Tag Manager

Costly

Execution 222ms

Transfer 128 KB

Unused 47%

Monthly Cost €2/mo

securepubads.g.doubleclick.net

Other

Costly

Execution 217ms

Transfer 188 KB

Unused 66%

Monthly Cost €2/mo

obs.forseasky.com

Other

Costly

Execution 210ms

Transfer 3 KB

Monthly Cost €2/mo

j.6sc.co

Other

Optional

Execution 153ms

Transfer 19 KB

Monthly Cost €2/mo

pagead2.googlesyndication.com

Other

Optional

Execution 153ms

Transfer 178 KB

Unused 84%

Monthly Cost €2/mo

cds.connatix.com

Other

Optional

Execution 130ms

Transfer 139 KB

Unused 68%

Monthly Cost €1/mo

pagead2.googlesyndication.com

Other

Optional

Execution 118ms

Transfer 0 KB

Unused 41%

Monthly Cost €1/mo

pixel.ngtrack.relay.cool

Other

Optional

Execution 112ms

Transfer 21 KB

Monthly Cost €1/mo

Google Tag Manager

Tag Manager

Optional

Execution 111ms

Transfer 132 KB

Unused 61%

Monthly Cost €1/mo

static.wonderhowto.com

Other

Optional

Execution 105ms

Transfer 15 KB

Monthly Cost €1/mo

d-code.liadm.com

Other

Optional

Execution 102ms

Transfer 47 KB

Monthly Cost €1/mo

www.wonderhowto.com

Other

Optional

Execution 98ms

Transfer 0 KB

Monthly Cost €1/mo

c.amazon-adsystem.com

Other

Optional

Execution 95ms

Transfer 91 KB

Unused 43%

Monthly Cost €1/mo

tags.clickagy.com

Other

Optional

Execution 83ms

Transfer 14 KB

Monthly Cost €1/mo

2hgw8wfhuhaugq2vz.ay.delivery

Other

Optional

Execution 75ms

Transfer 126 KB

Unused 69%

Monthly Cost €1/mo

2hgw8wfhuhaugq2vz.ay.delivery

Other

Optional

Execution 72ms

Transfer 36 KB

Monthly Cost €1/mo

ak.sail-horizon.com

Other

Optional

Execution 67ms

Transfer 48 KB

Unused 68%

Monthly Cost €1/mo

securepubads.g.doubleclick.net

Other

Optional

Execution 64ms

Transfer 34 KB

Monthly Cost €1/mo

config.aps.amazon-adsystem.com

Other

Optional

Execution 62ms

Transfer 1 KB

Monthly Cost €1/mo

tags.srv.stackadapt.com

Other

Optional

Execution 56ms

Transfer 8 KB

Monthly Cost €1/mo

These scripts may cost more than they're worth

Facebook Pixel adds 1274ms and costs ~€14/month
Facebook Pixel adds 1188ms and costs ~€13/month
2hgw8wfhuhaugq2vz.ay.delivery adds 1013ms and costs ~€11/month
Unattributable adds 950ms and costs ~€10/month
www.wonderhowto.com adds 914ms and costs ~€10/month
Facebook Pixel adds 777ms and costs ~€8/month
ob.forseasky.com adds 506ms and costs ~€6/month
cmp.inmobi.com adds 483ms and costs ~€5/month
cmp.inmobi.com adds 471ms and costs ~€5/month
Facebook Pixel adds 375ms and costs ~€4/month
Facebook Pixel adds 345ms and costs ~€4/month
Microsoft Clarity adds 291ms and costs ~€3/month
Google Tag Manager adds 282ms and costs ~€3/month
2hgw8wfhuhaugq2vz.ay.delivery adds 281ms and costs ~€3/month
Google Tag Manager adds 277ms and costs ~€3/month
cdn.taboola.com adds 261ms and costs ~€3/month
static.wonderhowto.com adds 249ms and costs ~€3/month
Google Tag Manager adds 222ms and costs ~€2/month
securepubads.g.doubleclick.net adds 217ms and costs ~€2/month
obs.forseasky.com adds 210ms and costs ~€2/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

Facebook Pixel takes 1274ms 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

Facebook Pixel takes 1188ms 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

2hgw8wfhuhaugq2vz.ay.delivery takes 1013ms 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

53% of 2hgw8wfhuhaugq2vz.ay.delivery'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

Unattributable takes 950ms 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.wonderhowto.com takes 914ms 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

Facebook Pixel takes 777ms 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

ob.forseasky.com takes 506ms 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

cmp.inmobi.com takes 483ms 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

cmp.inmobi.com takes 471ms 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

Facebook Pixel takes 375ms 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

Facebook Pixel takes 345ms 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

Microsoft Clarity takes 291ms 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 282ms 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

2hgw8wfhuhaugq2vz.ay.delivery takes 281ms 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

69% of 2hgw8wfhuhaugq2vz.ay.delivery'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

Google Tag Manager takes 277ms 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

cdn.taboola.com takes 261ms 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 cdn.taboola.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

static.wonderhowto.com takes 249ms 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 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

securepubads.g.doubleclick.net takes 217ms 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

66% of securepubads.g.doubleclick.net'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

obs.forseasky.com takes 210ms 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

84% 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

68% of cds.connatix.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 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

69% of 2hgw8wfhuhaugq2vz.ay.delivery'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

68% of ak.sail-horizon.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.