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

100

Accessibility

Best Practices

100

SEO

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

6.04 s

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

19.77 s

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

5.73 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.

12.28 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.

47.47 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

7 PASS 3 REVIEW 5 FIX

Page Weight Budget

Action

6.5 MB transferred, 180 requests

FIX

6.5 MB transferred, 180 requests

Page weighs 22.4 MB (6.5 MB transferred)

JavaScript is 5.7 MB — consider code splitting or lazy loading

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

Got: 5.7 MB

180 HTTP requests — consider bundling or reducing

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

Estimated 1.4 g CO2 per page load

6.5 MB transferred

180 requests

1.4 g CO2 per page load

JavaScript 5.7 MiB 88%

HTML 294.8 KiB 4%

Images 271.8 KiB 4%

Other 110.0 KiB 2%

Other 86.3 KiB 1%

Fonts 34.4 KiB 1%

Other 11.1 KiB 0%

CSS 8.5 KiB 0%

Other 233 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 (6.5 MiB of 6.5 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

JS Execution Cost

Action

16332ms total JS execution

FIX

16332ms total JS execution

https://www.zdnet.com/a/neutron/a9b03a097529.moder...: 3096ms CPU time

https://www.zdnet.com/: 2059ms CPU time

https://www.gstatic.com/_/mss/boq-cloud-ai-ucs/_/j...: 1982ms CPU time

Unattributable: 1821ms CPU time

https://cdn.ziffstatic.com/pg/zdnet.js: 604ms CPU time

Third-party scripts: 16332ms (100% of total)

Main Thread Breakdown

Script Evaluation 57% Script Parsing & Compilation 16% Other 14% Parse HTML & CSS 5% Style & Layout 5%

Script	Total	Scripting	Parse/Compile	Party
https://www.zdnet.com/a/neutron/a9b03a097529.modern.js	3096ms	2432ms	3ms	3rd
https://www.zdnet.com/	2059ms	180ms	358ms	3rd
https://www.gstatic.com/_/mss/boq-cloud-ai-ucs/_/js/k=boq-cloud-ai-ucs.UcsWidgetUi.en_US.XnSlP_UZXMM.2021.O/am=AABO/d=1/rs=AAj4Nmxg86XHFrEvV5J0sMRnXC8ezjfJKw/m=bootstrap_module,ucs_widget_module,xlite_module	1982ms	908ms	1065ms	3rd
Unattributable	1821ms	333ms	0ms	3rd
https://cdn.ziffstatic.com/pg/zdnet.js	604ms	261ms	61ms	3rd
https://cdn.ziffstatic.com/jst/otBannerSdk.202512.1.0.js	570ms	455ms	63ms	3rd
https://assets.bounceexchange.com/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf1b4c6576803.br.js	538ms	340ms	75ms	3rd
https://cdn.confiant-integrations.net/gptprebidnative/202603241056/wrap.js	537ms	483ms	50ms	3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604100101/pubads_impl.js	488ms	403ms	77ms	3rd
https://www.googletagmanager.com/gtag/destination?id=G-1Q25KQB2WE&cx=c&gtm=4e64e1h1&bs=ctrl	420ms	351ms	65ms	3rd

Showing top 10 of 36 scripts

JS Bundles

Action

65 scripts, 2.4 MB unused

FIX

65 scripts, 2.4 MB unused

https://www.gstatic.com/_/mss/boq-cloud-ai-ucs/_/j...: 714 KB unused (31%)

Consider code splitting or tree shaking to reduce unused code.

https://www.zdnet.com/a/neutron/2febdb49c6ca.moder...: 263 KB unused (57%)

Consider code splitting or tree shaking to reduce unused code.

https://cdn.ziffstatic.com/pg/zdnet.prebid.js: 162 KB unused (70%)

Consider code splitting or tree shaking to reduce unused code.

https://securepubads.g.doubleclick.net/pagead/mana...: 130 KB unused (70%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=G-1Q25...: 111 KB unused (69%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 2.4 MB

2457 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.gstatic.com/_/mss/boq-cloud-ai-ucs/_/js/k=boq-cloud-ai-ucs.UcsWidgetUi.en_US.XnSlP_UZXMM.2021.O/am=AABO/d=1/rs=AAj4Nmxg86XHFrEvV5J0sMRnXC8ezjfJKw/m=bootstrap_module,ucs_widget_module,xlite_module	2269 KB	714 KB (31%)	✓	3rd
https://www.zdnet.com/a/neutron/2febdb49c6ca.modern.js	464 KB	263 KB (57%)	✓	3rd
https://cdn.ziffstatic.com/pg/zdnet.prebid.js	232 KB	162 KB (70%)	✓	3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604100101/pubads_impl.js	186 KB	130 KB (70%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-1Q25KQB2WE	160 KB	111 KB (69%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-1Q25KQB2WE&cx=c&gtm=4e64e1h1&bs=ctrl	160 KB	110 KB (69%)	✓	3rd
https://cdn.confiant-integrations.net/gptprebidnative/202603241056/wrap.js	142 KB	85 KB (60%)	✓	3rd
https://cdn.ziffstatic.com/jst/otBannerSdk.202512.1.0.js	126 KB	76 KB (60%)	✓	3rd
https://assets.bounceexchange.com/assets/smart-tag/versioned/main-v2_a8ec0b4e51efd1e1ddbdf1b4c6576803.br.js	116 KB	71 KB (61%)	✓	3rd
https://www.zdnet.com/a/neutron/b92267d72792.modern.js	241 KB	70 KB (29%)	✓	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

180 resources · 6.5 MB · 2.4 MB savings available

FIX

180 resources · 6.5 MB · 2.4 MB savings available

Page weight 5.5 MB over 1MB target

Got: 6.5 MB Expected: ≤ 1 MB

~2.4 MB of savings available

179 third-party resources (100% of weight)

5 resources over 200KB

180 resources · 6.5 MiB · 179 third-party 5.5 MiB over 1MB target

JavaScript 88% · 5.7 MiB

Document 4% · 300.2 KiB

Image 4% · 277.4 KiB

Other 3% · 188.8 KiB

Font 1% · 34.4 KiB

CSS 0% · 13.2 KiB

~2.4 MiB of savings available

Remove unused JavaScript: 2.4 MiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

180 resources			6.5 MiB

Image Optimization

27 images, 0 KB saveable

REVIEW

27 images, 0 KB saveable

All images are well-optimized

27 images 272 KB

0 oversized -0 KB

24 legacy format

0 missing dimensions CLS risk

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

HTTP Caching

private, max-age=0, s-maxage=0

REVIEW

private, max-age=0, s-maxage=0

Cache-Control header is set

Got: private, max-age=0, s-maxage=0

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

private, max-age=0, s-maxage=0

Directive	Value	Meaning
private	—	Only browser cache, not CDN/proxy
max-age	0	Cache for 0 seconds
s-maxage	0	CDN caches for 0 seconds

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

2 fonts (34 KB)

PASS

2 fonts (34 KB)

2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

34 KB total

Render-blocking

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

Semibold.woff2 woff2 swap

Size 17 KB

Load time 242 ms

Start 755 ms

Risk FOUT — text flashes from fallback to web font

Regular.woff2 woff2 swap

Size 17 KB

Load time 247 ms

Start 756 ms

Risk FOUT — text flashes from fallback to web font

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)

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

11 hints, 0 missing preconnects

PASS

11 hints, 0 missing preconnects

Page uses 11 resource hint(s)

Current Resource Hints

preconnect

preload

dns-prefetch

—

prefetch

—

11 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

Network Waterfall

180 requests over 6246ms

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 16332ms · 5412KB · €261/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
www.zdnet.com www.zdnet.com	Other	3096ms	106 KB	46%	€50/mo	Costly
www.zdnet.com www.zdnet.com	Other	2059ms	292 KB	—	€33/mo	Costly
www.gstatic.com www.gstatic.com	Other	1982ms	2269 KB	31%	€32/mo	Costly
Unattributable Unattributable	Other	1821ms	0 KB	—	€29/mo	Costly
cdn.ziffstatic.com cdn.ziffstatic.com	Other	604ms	86 KB	79%	€10/mo	Costly
cdn.ziffstatic.com cdn.ziffstatic.com	Other	570ms	126 KB	60%	€9/mo	Costly
assets.bounceexchange.com assets.bounceexchange.com	Other	538ms	116 KB	61%	€9/mo	Costly
cdn.confiant-integrations.net cdn.confiant-integrations.net	Other	537ms	142 KB	60%	€9/mo	Costly
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	488ms	186 KB	70%	€8/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	420ms	160 KB	41%	€7/mo	Costly
client.aps.amazon-adsystem.com client.aps.amazon-adsystem.com	Other	354ms	82 KB	56%	€6/mo	Costly
skullmagnets.com skullmagnets.com	Other	318ms	37 KB	—	€5/mo	Costly
cdn.ziffstatic.com cdn.ziffstatic.com	Other	304ms	232 KB	70%	€5/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	287ms	127 KB	38%	€5/mo	Costly
www.zdnet.com www.zdnet.com	Other	239ms	71 KB	45%	€4/mo	Costly
openads-cdn.adsrvr.org openads-cdn.adsrvr.org	Other	211ms	98 KB	63%	€3/mo	Costly
forms.zdnet.com forms.zdnet.com	Other	204ms	1 KB	—	€3/mo	Costly
cdn.static.zdbb.net cdn.static.zdbb.net	Other	201ms	175 KB	24%	€3/mo	Costly
forms.zdnet.com forms.zdnet.com	Other	193ms	116 KB	59%	€3/mo	Optional
www.zdnet.com www.zdnet.com	Other	190ms	241 KB	29%	€3/mo	Optional
Facebook Pixel connect.facebook.net	Advertising	180ms	96 KB	45%	€3/mo	Optional
assets.bounceexchange.com assets.bounceexchange.com	Other	179ms	16 KB	—	€3/mo	Optional
pub.doubleverify.com pub.doubleverify.com	Other	140ms	31 KB	—	€2/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	135ms	111 KB	60%	€2/mo	Optional
cdn.taboola.com cdn.taboola.com	Other	119ms	27 KB	—	€2/mo	Optional
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	116ms	34 KB	—	€2/mo	Optional
cdn.ziffstatic.com cdn.ziffstatic.com	Other	108ms	0 KB	—	€2/mo	Optional
static.chartbeat.com static.chartbeat.com	Other	101ms	16 KB	—	€2/mo	Optional
assets.bounceexchange.com assets.bounceexchange.com	Other	94ms	5 KB	—	€2/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	93ms	160 KB	69%	€1/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	93ms	160 KB	69%	€1/mo	Optional
static.chartbeat.com static.chartbeat.com	Other	88ms	10 KB	—	€1/mo	Optional
siteintercept.qualtrics.com siteintercept.qualtrics.com	Other	78ms	19 KB	—	€1/mo	Optional
cdn.confiant-integrations.net cdn.confiant-integrations.net	Other	71ms	58 KB	—	€1/mo	Optional
api.bounceexchange.com api.bounceexchange.com	Other	67ms	1 KB	—	€1/mo	Optional
forms.zdnet.com forms.zdnet.com	Other	52ms	2 KB	—	€1/mo	Optional

www.zdnet.com

Other

Costly

Execution 3096ms

Transfer 106 KB

Unused 46%

Monthly Cost €50/mo

www.zdnet.com

Other

Costly

Execution 2059ms

Transfer 292 KB

Monthly Cost €33/mo

www.gstatic.com

Other

Costly

Execution 1982ms

Transfer 2269 KB

Unused 31%

Monthly Cost €32/mo

Unattributable

Other

Costly

Execution 1821ms

Transfer 0 KB

Monthly Cost €29/mo

cdn.ziffstatic.com

Other

Costly

Execution 604ms

Transfer 86 KB

Unused 79%

Monthly Cost €10/mo

cdn.ziffstatic.com

Other

Costly

Execution 570ms

Transfer 126 KB

Unused 60%

Monthly Cost €9/mo

assets.bounceexchange.com

Other

Costly

Execution 538ms

Transfer 116 KB

Unused 61%

Monthly Cost €9/mo

cdn.confiant-integrations.net

Other

Costly

Execution 537ms

Transfer 142 KB

Unused 60%

Monthly Cost €9/mo

securepubads.g.doubleclick.net

Other

Costly

Execution 488ms

Transfer 186 KB

Unused 70%

Monthly Cost €8/mo

Google Tag Manager

Tag Manager

Costly

Execution 420ms

Transfer 160 KB

Unused 41%

Monthly Cost €7/mo

client.aps.amazon-adsystem.com

Other

Costly

Execution 354ms

Transfer 82 KB

Unused 56%

Monthly Cost €6/mo

skullmagnets.com

Other

Costly

Execution 318ms

Transfer 37 KB

Monthly Cost €5/mo

cdn.ziffstatic.com

Other

Costly

Execution 304ms

Transfer 232 KB

Unused 70%

Monthly Cost €5/mo

Facebook Pixel

Advertising

Costly

Execution 287ms

Transfer 127 KB

Unused 38%

Monthly Cost €5/mo

www.zdnet.com

Other

Costly

Execution 239ms

Transfer 71 KB

Unused 45%

Monthly Cost €4/mo

openads-cdn.adsrvr.org

Other

Costly

Execution 211ms

Transfer 98 KB

Unused 63%

Monthly Cost €3/mo

forms.zdnet.com

Other

Costly

Execution 204ms

Transfer 1 KB

Monthly Cost €3/mo

cdn.static.zdbb.net

Other

Costly

Execution 201ms

Transfer 175 KB

Unused 24%

Monthly Cost €3/mo

forms.zdnet.com

Other

Optional

Execution 193ms

Transfer 116 KB

Unused 59%

Monthly Cost €3/mo

www.zdnet.com

Other

Optional

Execution 190ms

Transfer 241 KB

Unused 29%

Monthly Cost €3/mo

Facebook Pixel

Advertising

Optional

Execution 180ms

Transfer 96 KB

Unused 45%

Monthly Cost €3/mo

assets.bounceexchange.com

Other

Optional

Execution 179ms

Transfer 16 KB

Monthly Cost €3/mo

pub.doubleverify.com

Other

Optional

Execution 140ms

Transfer 31 KB

Monthly Cost €2/mo

Google Tag Manager

Tag Manager

Optional

Execution 135ms

Transfer 111 KB

Unused 60%

Monthly Cost €2/mo

cdn.taboola.com

Other

Optional

Execution 119ms

Transfer 27 KB

Monthly Cost €2/mo

securepubads.g.doubleclick.net

Other

Optional

Execution 116ms

Transfer 34 KB

Monthly Cost €2/mo

cdn.ziffstatic.com

Other

Optional

Execution 108ms

Transfer 0 KB

Monthly Cost €2/mo

static.chartbeat.com

Other

Optional

Execution 101ms

Transfer 16 KB

Monthly Cost €2/mo

assets.bounceexchange.com

Other

Optional

Execution 94ms

Transfer 5 KB

Monthly Cost €2/mo

Google Tag Manager

Tag Manager

Optional

Execution 93ms

Transfer 160 KB

Unused 69%

Monthly Cost €1/mo

Google Tag Manager

Tag Manager

Optional

Execution 93ms

Transfer 160 KB

Unused 69%

Monthly Cost €1/mo

static.chartbeat.com

Other

Optional

Execution 88ms

Transfer 10 KB

Monthly Cost €1/mo

siteintercept.qualtrics.com

Other

Optional

Execution 78ms

Transfer 19 KB

Monthly Cost €1/mo

cdn.confiant-integrations.net

Other

Optional

Execution 71ms

Transfer 58 KB

Monthly Cost €1/mo

api.bounceexchange.com

Other

Optional

Execution 67ms

Transfer 1 KB

Monthly Cost €1/mo

forms.zdnet.com

Other

Optional

Execution 52ms

Transfer 2 KB

Monthly Cost €1/mo

These scripts may cost more than they're worth

www.zdnet.com adds 3096ms and costs ~€50/month
www.zdnet.com adds 2059ms and costs ~€33/month
www.gstatic.com adds 1982ms and costs ~€32/month
Unattributable adds 1821ms and costs ~€29/month
cdn.ziffstatic.com adds 604ms and costs ~€10/month
cdn.ziffstatic.com adds 570ms and costs ~€9/month
assets.bounceexchange.com adds 538ms and costs ~€9/month
cdn.confiant-integrations.net adds 537ms and costs ~€9/month
securepubads.g.doubleclick.net adds 488ms and costs ~€8/month
Google Tag Manager adds 420ms and costs ~€7/month
client.aps.amazon-adsystem.com adds 354ms and costs ~€6/month
skullmagnets.com adds 318ms and costs ~€5/month
cdn.ziffstatic.com adds 304ms and costs ~€5/month
Facebook Pixel adds 287ms and costs ~€5/month
www.zdnet.com adds 239ms and costs ~€4/month
openads-cdn.adsrvr.org adds 211ms and costs ~€3/month
forms.zdnet.com adds 204ms and costs ~€3/month
cdn.static.zdbb.net adds 201ms and costs ~€3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.zdnet.com takes 3096ms 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.zdnet.com takes 2059ms 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.gstatic.com takes 1982ms 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 1821ms 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.ziffstatic.com takes 604ms 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

79% of cdn.ziffstatic.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

cdn.ziffstatic.com takes 570ms 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

60% of cdn.ziffstatic.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

assets.bounceexchange.com takes 538ms 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

61% of assets.bounceexchange.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

cdn.confiant-integrations.net takes 537ms 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

60% of cdn.confiant-integrations.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

securepubads.g.doubleclick.net takes 488ms 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

70% 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

Google Tag Manager takes 420ms 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

client.aps.amazon-adsystem.com takes 354ms 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

56% of client.aps.amazon-adsystem.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

skullmagnets.com takes 318ms 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.ziffstatic.com takes 304ms 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

70% of cdn.ziffstatic.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

Facebook Pixel takes 287ms 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.zdnet.com takes 239ms 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

openads-cdn.adsrvr.org takes 211ms 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 openads-cdn.adsrvr.org'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

forms.zdnet.com takes 204ms 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.static.zdbb.net takes 201ms 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

59% of forms.zdnet.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

60% 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 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 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

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.