Performance

F

Page Weight Budget

Action

2.7 MB transferred, 244 requests

FIX

2.7 MB transferred, 244 requests

Page weighs 9.1 MB (2.7 MB transferred)

JavaScript is 2.4 MB — consider code splitting or lazy loading

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

Got: 2.4 MB

244 HTTP requests — consider bundling or reducing

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

Estimated 0.57 g CO2 per page load

2.7 MB transferred

244 requests

0.57 g CO2 per page load

JavaScript 2.4 MiB 89%

Images 96.8 KiB 3%

Other 71.4 KiB 3%

HTML 62.7 KiB 2%

Other 27.0 KiB 1%

CSS 20.8 KiB 1%

Other 17.0 KiB 1%

Other 935 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

D

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 (2.7 MiB of 2.7 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

F

JS Execution Cost

Action

9557ms total JS execution

FIX

9557ms total JS execution

https://fundingchoicesmessages.google.com/i/430423...: 1552ms CPU time

Unattributable: 1384ms CPU time

https://securepubads.g.doubleclick.net/pagead/mana...: 1071ms CPU time

https://www.googletagmanager.com/gtm.js?id=GTM-W3C...: 1036ms CPU time

https://www.itmedia.co.jp/spv/: 522ms CPU time

Third-party scripts: 9557ms (100% of total)

Main Thread Breakdown

Script Evaluation 66% Other 15% Script Parsing & Compilation 12% Style & Layout 4%

Script	Total	Scripting	Parse/Compile	Party
https://fundingchoicesmessages.google.com/i/43042345?ers=3	1552ms	1431ms	28ms	3rd
Unattributable	1384ms	252ms	0ms	3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31097946	1071ms	891ms	79ms	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W3CLTQN	1036ms	864ms	153ms	3rd
https://www.itmedia.co.jp/spv/	522ms	305ms	20ms	3rd
https://cdn.cxense.com/cx.js	466ms	287ms	99ms	3rd
https://www.googletagmanager.com/gtag/js?id=G-419SLCGX56&cx=c&gtm=4e64k0h2	352ms	288ms	60ms	3rd
https://www.googletagmanager.com/gtag/js?id=AW-1032582312	350ms	286ms	61ms	3rd
https://www.itmedia.co.jp/js/spv/html5base.js?date=202512091010	340ms	1ms	8ms	3rd
https://www.googletagmanager.com/gtag/js?id=AW-10976778865	339ms	247ms	56ms	3rd

Showing top 10 of 30 scripts

F

JS Bundles

Action

103 scripts, 713 KB unused

FIX

103 scripts, 713 KB unused

https://www.googletagmanager.com/gtag/js?id=AW-109...: 106 KB unused (74%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=AW-103...: 105 KB unused (72%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=AW-578...: 102 KB unused (75%)

Consider code splitting or tree shaking to reduce unused code.

https://securepubads.g.doubleclick.net/pagead/mana...: 90 KB unused (48%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=G-419S...: 63 KB unused (42%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 713 KB

713 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=AW-10976778865&cx=c&gtm=4e64k0h2	143 KB	106 KB (74%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=AW-1032582312&cx=c&gtm=4e64k0h2	146 KB	105 KB (72%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=AW-578569290&cx=c&gtm=4e64k0h2	136 KB	102 KB (75%)	✓	3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31097946	187 KB	90 KB (48%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-419SLCGX56&cx=c&gtm=4e64k0h2	152 KB	63 KB (42%)	✓	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-W3CLTQN	188 KB	52 KB (28%)	✓	3rd
https://fundingchoicesmessages.google.com/i/43042345?ers=3	70 KB	36 KB (53%)	✓	3rd
https://connect.facebook.net/en_US/fbevents.js	97 KB	34 KB (35%)	✓	3rd
https://cdn.cxense.com/cx.js	0 KB	31 KB (84%)	✓	3rd
https://cdn.cxense.com/cx.js	38 KB	31 KB (84%)	✓	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

Page Weight Inventory

Action

244 resources · 2.7 MB · 713 KB savings available

FIX

244 resources · 2.7 MB · 713 KB savings available

Page weight 1.7 MB over 1MB target

Got: 2.7 MB Expected: ≤ 1 MB

~713 KB of savings available

243 third-party resources (100% of weight)

244 resources · 2.7 MiB · 243 third-party 1.7 MiB over 1MB target

JavaScript 89% · 2.4 MiB

Other 4% · 113.3 KiB

Image 4% · 98.8 KiB

Document 2% · 63.6 KiB

CSS 1% · 20.8 KiB

~713.4 KiB of savings available

Remove unused JavaScript: 713.4 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

244 resources			2.7 MiB

F

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.

B

Image Optimization

43 images, 0 KB saveable

REVIEW

43 images, 0 KB saveable

All images are well-optimized

43 images 76 KB

0 oversized -0 KB

29 legacy format

0 missing dimensions CLS risk

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

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

No optimization needed

PASS

No optimization needed

No resource hint issues

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

Network Waterfall

244 requests over 5568ms

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 9557ms · 2012KB · ¥13206/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
fundingchoicesmessages.google.com fundingchoicesmessages.google.com	Other	1552ms	70 KB	53%	¥2144/mo	Costly
Unattributable Unattributable	Other	1384ms	0 KB	—	¥1912/mo	Costly
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	1071ms	187 KB	48%	¥1480/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	1036ms	188 KB	28%	¥1431/mo	Costly
www.itmedia.co.jp www.itmedia.co.jp	Other	522ms	9 KB	—	¥721/mo	Costly
cdn.cxense.com cdn.cxense.com	Other	466ms	38 KB	84%	¥644/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	352ms	152 KB	42%	¥486/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	350ms	147 KB	—	¥484/mo	Costly
www.itmedia.co.jp www.itmedia.co.jp	Other	340ms	9 KB	—	¥470/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	339ms	144 KB	—	¥468/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	278ms	137 KB	—	¥385/mo	Costly
flux-cdn.com flux-cdn.com	Other	266ms	82 KB	—	¥367/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	185ms	97 KB	35%	¥256/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	166ms	45 KB	—	¥229/mo	Costly
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	129ms	35 KB	—	¥179/mo	Costly
rumcdn.geoedge.be rumcdn.geoedge.be	Other	120ms	103 KB	—	¥166/mo	Costly
fundingchoicesmessages.google.com fundingchoicesmessages.google.com	Other	91ms	2 KB	—	¥125/mo	Costly
tags.crwdcntrl.net tags.crwdcntrl.net	Other	87ms	13 KB	—	¥120/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	87ms	146 KB	72%	¥120/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	84ms	136 KB	75%	¥116/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	84ms	143 KB	74%	¥116/mo	Costly
oa.openxcdn.net oa.openxcdn.net	Other	79ms	8 KB	—	¥109/mo	Costly
www.itmedia.co.jp www.itmedia.co.jp	Other	68ms	10 KB	—	¥94/mo	Costly
ep2.adtrafficquality.google ep2.adtrafficquality.google	Other	68ms	8 KB	—	¥94/mo	Costly
static.criteo.net static.criteo.net	Other	63ms	15 KB	—	¥87/mo	Costly
cdn.treasuredata.com cdn.treasuredata.com	Other	61ms	21 KB	—	¥84/mo	Costly
cdn.id5-sync.com cdn.id5-sync.com	Other	61ms	35 KB	89%	¥84/mo	Costly
/_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.DsKGN-qqfrQ.es5.O/d=1/rs=AJlcJMz2YRLcgcQw7bN4By8dD3CBlNJULw/m=kernel_loader,loader_js_executable /_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.DsKGN-qqfrQ.es5.O/d=1/rs=AJlcJMz2YRLcgcQw7bN4By8dD3CBlNJULw/m=kernel_loader,loader_js_executable	Other	57ms	0 KB	—	¥79/mo	Costly
rumcdn.geoedge.be rumcdn.geoedge.be	Other	57ms	7 KB	—	¥79/mo	Costly
pagead2.googlesyndication.com pagead2.googlesyndication.com	Other	55ms	25 KB	—	¥76/mo	Costly

fundingchoicesmessages.google.com

Other

Costly

Execution 1552ms

Transfer 70 KB

Unused 53%

Monthly Cost ¥2144/mo

Unattributable

Other

Costly

Execution 1384ms

Transfer 0 KB

Monthly Cost ¥1912/mo

securepubads.g.doubleclick.net

Other

Costly

Execution 1071ms

Transfer 187 KB

Unused 48%

Monthly Cost ¥1480/mo

Google Tag Manager

Tag Manager

Costly

Execution 1036ms

Transfer 188 KB

Unused 28%

Monthly Cost ¥1431/mo

www.itmedia.co.jp

Other

Costly

Execution 522ms

Transfer 9 KB

Monthly Cost ¥721/mo

cdn.cxense.com

Other

Costly

Execution 466ms

Transfer 38 KB

Unused 84%

Monthly Cost ¥644/mo

Google Tag Manager

Tag Manager

Costly

Execution 352ms

Transfer 152 KB

Unused 42%

Monthly Cost ¥486/mo

Google Tag Manager

Tag Manager

Costly

Execution 350ms

Transfer 147 KB

Monthly Cost ¥484/mo

www.itmedia.co.jp

Other

Costly

Execution 340ms

Transfer 9 KB

Monthly Cost ¥470/mo

Google Tag Manager

Tag Manager

Costly

Execution 339ms

Transfer 144 KB

Monthly Cost ¥468/mo

Google Tag Manager

Tag Manager

Costly

Execution 278ms

Transfer 137 KB

Monthly Cost ¥385/mo

flux-cdn.com

Other

Costly

Execution 266ms

Transfer 82 KB

Monthly Cost ¥367/mo

Facebook Pixel

Advertising

Costly

Execution 185ms

Transfer 97 KB

Unused 35%

Monthly Cost ¥256/mo

Facebook Pixel

Advertising

Costly

Execution 166ms

Transfer 45 KB

Monthly Cost ¥229/mo

securepubads.g.doubleclick.net

Other

Costly

Execution 129ms

Transfer 35 KB

Monthly Cost ¥179/mo

rumcdn.geoedge.be

Other

Costly

Execution 120ms

Transfer 103 KB

Monthly Cost ¥166/mo

fundingchoicesmessages.google.com

Other

Costly

Execution 91ms

Transfer 2 KB

Monthly Cost ¥125/mo

tags.crwdcntrl.net

Other

Costly

Execution 87ms

Transfer 13 KB

Monthly Cost ¥120/mo

Google Tag Manager

Tag Manager

Costly

Execution 87ms

Transfer 146 KB

Unused 72%

Monthly Cost ¥120/mo

Google Tag Manager

Tag Manager

Costly

Execution 84ms

Transfer 136 KB

Unused 75%

Monthly Cost ¥116/mo

Google Tag Manager

Tag Manager

Costly

Execution 84ms

Transfer 143 KB

Unused 74%

Monthly Cost ¥116/mo

oa.openxcdn.net

Other

Costly

Execution 79ms

Transfer 8 KB

Monthly Cost ¥109/mo

www.itmedia.co.jp

Other

Costly

Execution 68ms

Transfer 10 KB

Monthly Cost ¥94/mo

ep2.adtrafficquality.google

Other

Costly

Execution 68ms

Transfer 8 KB

Monthly Cost ¥94/mo

static.criteo.net

Other

Costly

Execution 63ms

Transfer 15 KB

Monthly Cost ¥87/mo

cdn.treasuredata.com

Other

Costly

Execution 61ms

Transfer 21 KB

Monthly Cost ¥84/mo

cdn.id5-sync.com

Other

Costly

Execution 61ms

Transfer 35 KB

Unused 89%

Monthly Cost ¥84/mo

/_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.DsKGN-qqfrQ.es5.O/d=1/rs=AJlcJMz2YRLcgcQw7bN4By8dD3CBlNJULw/m=kernel_loader,loader_js_executable

Other

Costly

Execution 57ms

Transfer 0 KB

Monthly Cost ¥79/mo

rumcdn.geoedge.be

Other

Costly

Execution 57ms

Transfer 7 KB

Monthly Cost ¥79/mo

pagead2.googlesyndication.com

Other

Costly

Execution 55ms

Transfer 25 KB

Monthly Cost ¥76/mo

These scripts may cost more than they're worth

fundingchoicesmessages.google.com adds 1552ms and costs ~¥2144/month
Unattributable adds 1384ms and costs ~¥1912/month
securepubads.g.doubleclick.net adds 1071ms and costs ~¥1480/month
Google Tag Manager adds 1036ms and costs ~¥1431/month
www.itmedia.co.jp adds 522ms and costs ~¥721/month
cdn.cxense.com adds 466ms and costs ~¥644/month
Google Tag Manager adds 352ms and costs ~¥486/month
Google Tag Manager adds 350ms and costs ~¥484/month
www.itmedia.co.jp adds 340ms and costs ~¥470/month
Google Tag Manager adds 339ms and costs ~¥468/month
Google Tag Manager adds 278ms and costs ~¥385/month
flux-cdn.com adds 266ms and costs ~¥367/month
Facebook Pixel adds 185ms and costs ~¥256/month
Facebook Pixel adds 166ms and costs ~¥229/month
securepubads.g.doubleclick.net adds 129ms and costs ~¥179/month
rumcdn.geoedge.be adds 120ms and costs ~¥166/month
fundingchoicesmessages.google.com adds 91ms and costs ~¥125/month
tags.crwdcntrl.net adds 87ms and costs ~¥120/month
Google Tag Manager adds 87ms and costs ~¥120/month
Google Tag Manager adds 84ms and costs ~¥116/month
Google Tag Manager adds 84ms and costs ~¥116/month
oa.openxcdn.net adds 79ms and costs ~¥109/month
www.itmedia.co.jp adds 68ms and costs ~¥94/month
ep2.adtrafficquality.google adds 68ms and costs ~¥94/month
static.criteo.net adds 63ms and costs ~¥87/month
cdn.treasuredata.com adds 61ms and costs ~¥84/month
cdn.id5-sync.com adds 61ms and costs ~¥84/month
/_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.DsKGN-qqfrQ.es5.O/d=1/rs=AJlcJMz2YRLcgcQw7bN4By8dD3CBlNJULw/m=kernel_loader,loader_js_executable adds 57ms and costs ~¥79/month
rumcdn.geoedge.be adds 57ms and costs ~¥79/month
pagead2.googlesyndication.com adds 55ms and costs ~¥76/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

fundingchoicesmessages.google.com takes 1552ms 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 fundingchoicesmessages.google.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

Unattributable takes 1384ms 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 1071ms 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 1036ms 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.itmedia.co.jp takes 522ms 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.cxense.com takes 466ms 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 cdn.cxense.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

Google Tag Manager takes 352ms 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 350ms 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.itmedia.co.jp takes 340ms 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 339ms 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 278ms 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

flux-cdn.com takes 266ms 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 185ms 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 166ms 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 129ms 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

rumcdn.geoedge.be takes 120ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

fundingchoicesmessages.google.com takes 91ms 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

tags.crwdcntrl.net takes 87ms 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 87ms 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

72% 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

Google Tag Manager takes 84ms 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

75% 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

Google Tag Manager takes 84ms 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

74% 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

oa.openxcdn.net takes 79ms 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.itmedia.co.jp takes 68ms 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

ep2.adtrafficquality.google takes 68ms 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.criteo.net takes 63ms 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.treasuredata.com takes 61ms 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.id5-sync.com takes 61ms 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

89% of cdn.id5-sync.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

/_/mss/boq-content-ads-contributor/_/js/k=boq-content-ads-contributor.ContributorServingResponseClientJs.en_US.DsKGN-qqfrQ.es5.O/d=1/rs=AJlcJMz2YRLcgcQw7bN4By8dD3CBlNJULw/m=kernel_loader,loader_js_executable takes 57ms 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

rumcdn.geoedge.be takes 57ms 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

pagead2.googlesyndication.com takes 55ms 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

How third-party costs are calculated

Browse & Analyze

Learn

Page Load Progression

Green Hosting

These scripts may cost more than they're worth