Performance

F

Page Weight Budget

Action

6.1 MB transferred, 185 requests

FIX

6.1 MB transferred, 185 requests

Page weighs 17.7 MB (6.1 MB transferred)

JavaScript is 3.4 MB — consider code splitting or lazy loading

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

Got: 3.4 MB

Images are 2.1 MB — compress or use modern formats

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

Got: 2.1 MB

Fonts are 235 KB — consider subsetting or using system fonts

Subset fonts to include only used characters, or switch to system font stacks.

Got: 235 KB

CSS is 202 KB — consider purging unused styles

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Got: 202 KB

185 HTTP requests — consider bundling or reducing

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

Estimated 1.3 g CO2 per page load

6.1 MB transferred

185 requests

1.3 g CO2 per page load

JavaScript 3.4 MiB 56%

Images 2.1 MiB 34%

Fonts 234.8 KiB 4%

CSS 202.2 KiB 3%

Other 61.8 KiB 1%

HTML 45.1 KiB 1%

Other 41.9 KiB 1%

Other 24.6 KiB 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

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

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 (6.1 MiB of 6.1 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

F

JS Execution Cost

Action

19518ms total JS execution

FIX

19518ms total JS execution

https://www.sandiegouniontribune.com/_static/??-eJ...: 8552ms CPU time

https://cmp.osano.com/16A1AnRt2Fn8i1unj/588a4c3b-9...: 2275ms CPU time

https://www.sandiegouniontribune.com/: 1620ms CPU time

Unattributable: 948ms CPU time

https://www.sandiegouniontribune.com/_static/??-eJ...: 709ms CPU time

Third-party scripts: 19518ms (100% of total)

Main Thread Breakdown

Script Evaluation 79% Other 7% Style & Layout 6% Script Parsing & Compilation 5%

Script	Total	Scripting	Parse/Compile	Party
https://www.sandiegouniontribune.com/_static/??-eJyVj7EOwjAMRH+I1rA0MCAGFhY+ImpC45LYUe2A6NcTkECwIDHe6Z7uDq656ZnUk4IGn7xAdZIVJnAoCqMAiyXeF1FObUJqR1nAB5ZjGZAEEg1N0PjGqj5oPLKTX1QOrEwnjBEunhxPkLHXMvmH9R8Y7XwTnP1XH1Ifi6u36qLnssB8fiV2absypjNms+zW4x1eiGQL	8552ms	8404ms	2ms	3rd
https://cmp.osano.com/16A1AnRt2Fn8i1unj/588a4c3b-9412-405d-881a-4c100177ffdd/osano.js	2275ms	1917ms	33ms	3rd
https://www.sandiegouniontribune.com/	1620ms	244ms	14ms	3rd
Unattributable	948ms	118ms	0ms	3rd
https://www.sandiegouniontribune.com/_static/??-eJylzM0OQDAQBOAXoovEz0VcvUZL06y0S+w2PL46iSunSSYzHxxbPq0klgQ2Hx0SQyCXz+iQo2Fg0YLTq1NBIykTafZWLZzBFyMdyJ7yl0ljFG9DSv5rRRz1DewPNIS+bNumK+qqKpcLv3xxFw==	709ms	601ms	96ms	3rd
https://connext-fd-gnbrate4fjhjb3f7.z01.azurefd.net/index.js	553ms	495ms	3ms	3rd
https://cdn.adapex.io/hb/aaw.empowerlocal_c.js	470ms	426ms	37ms	3rd
https://cdn.p-n.io/pushly-sdk.min.js?domain_key=5QIpV1GwE7xvFTvUeUuFIfXYXVbYjg47C0Dg&ver=6.9.4	386ms	345ms	11ms	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NFD2QGD&l=MG2DL	365ms	318ms	42ms	3rd
https://www.googletagmanager.com/gtag/js?id=G-JT3B9930DJ&cx=c&gtm=4e64h1	338ms	285ms	33ms	3rd

Showing top 10 of 32 scripts

F

JS Bundles

Action

81 scripts, 1.5 MB unused

FIX

81 scripts, 1.5 MB unused

https://engage.sandiegouniontribune.com/prod/dfm/t...: 186 KB unused (64%)

Consider code splitting or tree shaking to reduce unused code.

https://securepubads.g.doubleclick.net/pagead/mana...: 142 KB unused (76%)

Consider code splitting or tree shaking to reduce unused code.

https://www.sandiegouniontribune.com/_static/??-eJ...: 126 KB unused (81%)

Consider code splitting or tree shaking to reduce unused code.

https://cdn.adapex.io/hb/aaw.empowerlocal_c.js: 104 KB unused (62%)

Consider code splitting or tree shaking to reduce unused code.

https://cds.connatix.com/p/320810193/connatix.play...: 95 KB unused (68%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 1.5 MB

1504 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://engage.sandiegouniontribune.com/prod/dfm/t8y9347t.min.js?2026321	292 KB	186 KB (64%)	✓	3rd
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604160201/pubads_impl.js	188 KB	142 KB (76%)	✓	3rd
https://www.sandiegouniontribune.com/_static/??-eJylzM0OQDAQBOAXoovEz0VcvUZL06y0S+w2PL46iSunSSYzHxxbPq0klgQ2Hx0SQyCXz+iQo2Fg0YLTq1NBIykTafZWLZzBFyMdyJ7yl0ljFG9DSv5rRRz1DewPNIS+bNumK+qqKpcLv3xxFw==	155 KB	126 KB (81%)	✓	3rd
https://cdn.adapex.io/hb/aaw.empowerlocal_c.js	169 KB	104 KB (62%)	✓	3rd
https://cds.connatix.com/p/320810193/connatix.player.js	139 KB	95 KB (68%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-4GX2KRZNNN&l=MG2DL&cx=c&gtm=4e64h1	145 KB	72 KB (50%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-KVX6E4M7J9&l=cswDataLayer&cx=c&gtm=4e64h1	144 KB	72 KB (50%)	✓	3rd
https://accounts.google.com/gsi/client?ver=6.9.4	96 KB	68 KB (71%)	✓	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-NFD2QGD&l=MG2DL	171 KB	66 KB (38%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-JT3B9930DJ&cx=c&gtm=4e64h1	159 KB	61 KB (39%)	✓	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

185 resources · 6.1 MB · 1.5 MB savings available

FIX

185 resources · 6.1 MB · 1.5 MB savings available

Page weight 5.1 MB over 1MB target

Got: 6.1 MB Expected: ≤ 1 MB

~1.5 MB of savings available

184 third-party resources (100% of weight)

4 resources over 200KB

185 resources · 6.1 MiB · 184 third-party 5.1 MiB over 1MB target

JavaScript 56% · 3.4 MiB

Image 34% · 2.1 MiB

Font 4% · 234.8 KiB

CSS 3% · 202.2 KiB

Other 2% · 126.3 KiB

Document 1% · 45.7 KiB

~1.5 MiB of savings available

Remove unused JavaScript: 1.5 MiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

185 resources			6.1 MiB

C

Image Optimization

Action

47 images, 0 KB saveable

REVIEW

47 images, 0 KB saveable

is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://www.sandiegouniontribune.com/wp-content/up... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://www.sandiegouniontribune.com/wp-content/up... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://www.sandiegouniontribune.com/wp-content/up... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://www.sandiegouniontribune.com/wp-content/up... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

47 images 2.1 MB

0 oversized -0 KB

32 legacy format

5 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

C

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

B

HTTP Caching

private

REVIEW

private

Cache-Control header is set

Got: private

No ETag or Last-Modified header

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

Cache-Control

private

Directive	Value	Meaning
private	—	Only browser cache, not CDN/proxy

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

7 fonts (235 KB)

PASS

7 fonts (235 KB)

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

Web fonts

7

235 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

truetype;base64,AAEAAAA... unknown swap

Size 32 KB

Load time 72 ms

Start 2.0 s

Risk FOUT — text flashes from fallback to web font

bootstrap-icons.woff2 woff2 swap

Size 89 KB

Load time 14 ms

Start 2.1 s

Risk FOUT — text flashes from fallback to web font

o-0bIpQlx3QUlC5A4PNB6Ry... woff2 swap

Size 35 KB

Load time 56 ms

Start 2.1 s

Risk FOUT — text flashes from fallback to web font

ga6daw1J5X9T9RW6j9bNVls... woff2 swap

Size 36 KB

Load time 56 ms

Start 2.1 s

Risk FOUT — text flashes from fallback to web font

icomoon.woff woff swap

Size 2 KB

Load time 6 ms

Start 3.0 s

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

KFOmCnqEu92Fr1Mu4mxP.ttf ttf swap

Size 20 KB

Load time 26 ms

Start 3.0 s

Risk FOUT — text flashes from fallback to web font

Convert to woff2 for ~30% smaller file size

KFOlCnqEu92Fr1MmWUlfBBc... ttf swap

Size 20 KB

Load time 39 ms

Start 3.1 s

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 ~23 KB and ~46 ms

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

14 hints, 0 missing preconnects

PASS

14 hints, 0 missing preconnects

Page uses 14 resource hint(s)

Current Resource Hints

preconnect

2

preload

1

dns-prefetch

+1

11

prefetch

—

14 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

185 requests over 8572ms

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 19518ms · 2609KB · $112/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
www.sandiegouniontribune.com www.sandiegouniontribune.com	Other	8552ms	10 KB	—	$49/mo	Costly
cmp.osano.com cmp.osano.com	Other	2275ms	96 KB	21%	$13/mo	Costly
www.sandiegouniontribune.com www.sandiegouniontribune.com	Other	1620ms	43 KB	—	$9/mo	Costly
Unattributable Unattributable	Other	948ms	0 KB	—	$5/mo	Costly
www.sandiegouniontribune.com www.sandiegouniontribune.com	Other	709ms	155 KB	81%	$4/mo	Costly
connext-fd-gnbrate4fjhjb3f7.z01.azurefd.net connext-fd-gnbrate4fjhjb3f7.z01.azurefd.net	Other	553ms	3 KB	—	$3/mo	Costly
cdn.adapex.io cdn.adapex.io	Other	470ms	169 KB	62%	$3/mo	Costly
cdn.p-n.io cdn.p-n.io	Other	386ms	0 KB	—	$2/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	365ms	171 KB	38%	$2/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	338ms	159 KB	39%	$2/mo	Costly
engage.sandiegouniontribune.com engage.sandiegouniontribune.com	Other	328ms	292 KB	64%	$2/mo	Costly
cdn.sophi.io cdn.sophi.io	Other	266ms	39 KB	—	$2/mo	Costly
thebestpaints.com thebestpaints.com	Other	239ms	36 KB	—	$1/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	235ms	213 KB	26%	$1/mo	Costly
az416426.vo.msecnd.net az416426.vo.msecnd.net	Other	219ms	22 KB	—	$1/mo	Costly
fp.sandiegouniontribune.com fp.sandiegouniontribune.com	Other	200ms	23 KB	—	$1/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	198ms	145 KB	40%	$1/mo	Optional
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	179ms	188 KB	76%	$1/mo	Optional
jsDelivr cdn.jsdelivr.net	CDN	170ms	81 KB	47%	$1/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	142ms	144 KB	50%	$1/mo	Optional
sdk.mrf.io sdk.mrf.io	Other	140ms	63 KB	40%	$1/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	136ms	145 KB	50%	$1/mo	Optional
cds.connatix.com cds.connatix.com	Other	116ms	139 KB	68%	$1/mo	Optional
g2i.sandiegouniontribune.com g2i.sandiegouniontribune.com	Other	108ms	44 KB	50%	$1/mo	Optional
s.cdn.gcprivacy.net s.cdn.gcprivacy.net	Other	101ms	9 KB	—	$1/mo	Optional
cdn-p.cityspark.com cdn-p.cityspark.com	Other	96ms	22 KB	—	$1/mo	Optional
www.sandiegouniontribune.com www.sandiegouniontribune.com	Other	91ms	21 KB	—	$1/mo	Optional
a352.sandiegouniontribune.com a352.sandiegouniontribune.com	Other	81ms	45 KB	—	$0/mo	Optional
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	75ms	34 KB	—	$0/mo	Optional
digitalfirstmedia.blueconic.net digitalfirstmedia.blueconic.net	Other	66ms	1 KB	—	$0/mo	Optional
ajax.googleapis.com ajax.googleapis.com	Other	60ms	31 KB	—	$0/mo	Optional
www.sandiegouniontribune.com www.sandiegouniontribune.com	Other	55ms	66 KB	77%	$0/mo	Optional

www.sandiegouniontribune.com

Other

Costly

Execution 8552ms

Transfer 10 KB

Monthly Cost $49/mo

cmp.osano.com

Other

Costly

Execution 2275ms

Transfer 96 KB

Unused 21%

Monthly Cost $13/mo

www.sandiegouniontribune.com

Other

Costly

Execution 1620ms

Transfer 43 KB

Monthly Cost $9/mo

Unattributable

Other

Costly

Execution 948ms

Transfer 0 KB

Monthly Cost $5/mo

www.sandiegouniontribune.com

Other

Costly

Execution 709ms

Transfer 155 KB

Unused 81%

Monthly Cost $4/mo

connext-fd-gnbrate4fjhjb3f7.z01.azurefd.net

Other

Costly

Execution 553ms

Transfer 3 KB

Monthly Cost $3/mo

cdn.adapex.io

Other

Costly

Execution 470ms

Transfer 169 KB

Unused 62%

Monthly Cost $3/mo

cdn.p-n.io

Other

Costly

Execution 386ms

Transfer 0 KB

Monthly Cost $2/mo

Google Tag Manager

Tag Manager

Costly

Execution 365ms

Transfer 171 KB

Unused 38%

Monthly Cost $2/mo

Google Tag Manager

Tag Manager

Costly

Execution 338ms

Transfer 159 KB

Unused 39%

Monthly Cost $2/mo

engage.sandiegouniontribune.com

Other

Costly

Execution 328ms

Transfer 292 KB

Unused 64%

Monthly Cost $2/mo

cdn.sophi.io

Other

Costly

Execution 266ms

Transfer 39 KB

Monthly Cost $2/mo

thebestpaints.com

Other

Costly

Execution 239ms

Transfer 36 KB

Monthly Cost $1/mo

Google Tag Manager

Tag Manager

Costly

Execution 235ms

Transfer 213 KB

Unused 26%

Monthly Cost $1/mo

az416426.vo.msecnd.net

Other

Costly

Execution 219ms

Transfer 22 KB

Monthly Cost $1/mo

fp.sandiegouniontribune.com

Other

Optional

Execution 200ms

Transfer 23 KB

Monthly Cost $1/mo

Google Tag Manager

Tag Manager

Optional

Execution 198ms

Transfer 145 KB

Unused 40%

Monthly Cost $1/mo

securepubads.g.doubleclick.net

Other

Optional

Execution 179ms

Transfer 188 KB

Unused 76%

Monthly Cost $1/mo

jsDelivr

CDN

Optional

Execution 170ms

Transfer 81 KB

Unused 47%

Monthly Cost $1/mo

Google Tag Manager

Tag Manager

Optional

Execution 142ms

Transfer 144 KB

Unused 50%

Monthly Cost $1/mo

sdk.mrf.io

Other

Optional

Execution 140ms

Transfer 63 KB

Unused 40%

Monthly Cost $1/mo

Google Tag Manager

Tag Manager

Optional

Execution 136ms

Transfer 145 KB

Unused 50%

Monthly Cost $1/mo

cds.connatix.com

Other

Optional

Execution 116ms

Transfer 139 KB

Unused 68%

Monthly Cost $1/mo

g2i.sandiegouniontribune.com

Other

Optional

Execution 108ms

Transfer 44 KB

Unused 50%

Monthly Cost $1/mo

s.cdn.gcprivacy.net

Other

Optional

Execution 101ms

Transfer 9 KB

Monthly Cost $1/mo

cdn-p.cityspark.com

Other

Optional

Execution 96ms

Transfer 22 KB

Monthly Cost $1/mo

www.sandiegouniontribune.com

Other

Optional

Execution 91ms

Transfer 21 KB

Monthly Cost $1/mo

a352.sandiegouniontribune.com

Other

Optional

Execution 81ms

Transfer 45 KB

Monthly Cost $0/mo

securepubads.g.doubleclick.net

Other

Optional

Execution 75ms

Transfer 34 KB

Monthly Cost $0/mo

digitalfirstmedia.blueconic.net

Other

Optional

Execution 66ms

Transfer 1 KB

Monthly Cost $0/mo

ajax.googleapis.com

Other

Optional

Execution 60ms

Transfer 31 KB

Monthly Cost $0/mo

www.sandiegouniontribune.com

Other

Optional

Execution 55ms

Transfer 66 KB

Unused 77%

Monthly Cost $0/mo

These scripts may cost more than they're worth

www.sandiegouniontribune.com adds 8552ms and costs ~$49/month
cmp.osano.com adds 2275ms and costs ~$13/month
www.sandiegouniontribune.com adds 1620ms and costs ~$9/month
Unattributable adds 948ms and costs ~$5/month
www.sandiegouniontribune.com adds 709ms and costs ~$4/month
connext-fd-gnbrate4fjhjb3f7.z01.azurefd.net adds 553ms and costs ~$3/month
cdn.adapex.io adds 470ms and costs ~$3/month
cdn.p-n.io adds 386ms and costs ~$2/month
Google Tag Manager adds 365ms and costs ~$2/month
Google Tag Manager adds 338ms and costs ~$2/month
engage.sandiegouniontribune.com adds 328ms and costs ~$2/month
cdn.sophi.io adds 266ms and costs ~$2/month
thebestpaints.com adds 239ms and costs ~$1/month
Google Tag Manager adds 235ms and costs ~$1/month
az416426.vo.msecnd.net adds 219ms and costs ~$1/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.sandiegouniontribune.com takes 8552ms 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.osano.com takes 2275ms 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.sandiegouniontribune.com takes 1620ms 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 948ms 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.sandiegouniontribune.com takes 709ms 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

81% of www.sandiegouniontribune.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

connext-fd-gnbrate4fjhjb3f7.z01.azurefd.net takes 553ms 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.adapex.io takes 470ms 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

62% of cdn.adapex.io'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.p-n.io takes 386ms 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 365ms 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 338ms 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

engage.sandiegouniontribune.com takes 328ms 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

64% of engage.sandiegouniontribune.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.sophi.io 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

thebestpaints.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

Google Tag Manager takes 235ms 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

az416426.vo.msecnd.net takes 219ms 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

76% 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

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

50% of g2i.sandiegouniontribune.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

77% of www.sandiegouniontribune.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

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