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.

6.80 s

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

29.35 s

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

4.40 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.

14.89 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.

42.46 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 2 REVIEW 5 FIX

Page Weight Budget

Action

7.5 MB transferred, 158 requests

FIX

7.5 MB transferred, 158 requests

Page weighs 14.9 MB (7.5 MB transferred)

Images are 3.2 MB — compress or use modern formats

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

Got: 3.2 MB

JavaScript is 2.7 MB — consider code splitting or lazy loading

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

Got: 2.7 MB

Fonts are 233 KB — consider subsetting or using system fonts

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

Got: 233 KB

158 HTTP requests — consider bundling or reducing

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

Estimated 1.6 g CO2 per page load

7.5 MB transferred

158 requests

1.6 g CO2 per page load

Images 3.2 MiB 43%

JavaScript 2.7 MiB 36%

Other 1.1 MiB 15%

Fonts 232.5 KiB 3%

HTML 157.5 KiB 2%

CSS 54.1 KiB 1%

Other 25.1 KiB 0%

Other 13.1 KiB 0%

Other 604 B 0%

0 2.4 MB 4.9 MB

Over budget

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

Why this matters

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

Source: web.dev

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

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

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

JS Execution Cost

Action

12316ms total JS execution

FIX

12316ms total JS execution

https://smartasset.com/_next/static/chunks/f58c171...: 2771ms CPU time

Unattributable: 1383ms CPU time

https://www.googletagmanager.com/gtm.js?id=GTM-KLV...: 1026ms CPU time

https://cdn.optimizely.com/js/26323810062.js: 630ms CPU time

https://www.googletagmanager.com/gtag/js?id=AW-107...: 569ms CPU time

Third-party scripts: 7538ms (61% of total)

Main Thread Breakdown

Script Evaluation 72% Other 11% Script Parsing & Compilation 9% Style & Layout 5%

Script	Total	Scripting	Parse/Compile	Party
https://smartasset.com/_next/static/chunks/f58c171e-afd7b257bd2c15ad.js	2771ms	2674ms	77ms	1st
Unattributable	1383ms	158ms	0ms	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KLVHB3	1026ms	851ms	88ms	3rd
https://cdn.optimizely.com/js/26323810062.js	630ms	513ms	100ms	3rd
https://www.googletagmanager.com/gtag/js?id=AW-10794768122&cx=c&gtm=4e64m0h2	569ms	490ms	62ms	3rd
https://smartasset.com/_next/static/chunks/1255-cacee165e7220128.js	529ms	465ms	22ms	1st
https://smartasset.com/	519ms	7ms	9ms	1st
https://www.googletagmanager.com/gtag/js?id=G-D8N6LFYSFN&cx=c&gtm=4e64m0h2	400ms	325ms	68ms	3rd
https://www.googletagmanager.com/gtag/js?id=G-YS1DP044XE&cx=c&_slc=1	393ms	313ms	72ms	3rd
https://mapixl.com/scripts/pixlv4.min.js	381ms	151ms	5ms	3rd

Showing top 10 of 32 scripts

JS Bundles

Action

56 scripts, 1.0 MB unused

FIX

56 scripts, 1.0 MB unused

https://securepubads.g.doubleclick.net/pagead/mana...: 143 KB unused (76%)

Consider code splitting or tree shaking to reduce unused code.

https://cdn.optimizely.com/js/26323810062.js: 125 KB unused (53%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=G-YS1D...: 74 KB unused (42%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=G-58JB...: 71 KB unused (41%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=G-D8N6...: 70 KB unused (39%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 1.0 MB

1036 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604210101/pubads_impl.js?cb=31098008	188 KB	143 KB (76%)	✓	3rd
https://cdn.optimizely.com/js/26323810062.js	236 KB	125 KB (53%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-YS1DP044XE&cx=c&_slc=1	177 KB	74 KB (42%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-58JBWRG3V3	174 KB	71 KB (41%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-D8N6LFYSFN&cx=c&gtm=4e64m0h2	177 KB	70 KB (39%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=G-0ND4BB59RR&cx=c&gtm=4e64m0h2	155 KB	67 KB (44%)	✓	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-KLVHB3	195 KB	63 KB (33%)	✓	3rd
https://smartasset.com/_next/static/chunks/f58c171e-afd7b257bd2c15ad.js	66 KB	62 KB (95%)	✓	1st
https://www.googletagmanager.com/gtag/js?id=DC-9509499&cx=c&gtm=4e64m0h2	129 KB	61 KB (47%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=AW-775710522&cx=c&gtm=4e64m0h2	144 KB	57 KB (40%)	✓	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

158 resources · 7.5 MB · 1.0 MB savings available

FIX

158 resources · 7.5 MB · 1.0 MB savings available

Page weight 6.5 MB over 1MB target

Got: 7.5 MB Expected: ≤ 1 MB

~1.0 MB of savings available

94 third-party resources (39% of weight)

6 resources over 200KB

158 resources · 7.5 MiB · 94 third-party 6.5 MiB over 1MB target

Image 43% · 3.2 MiB

JavaScript 36% · 2.7 MiB

Other 15% · 1.2 MiB

Font 3% · 232.5 KiB

Document 2% · 157.5 KiB

CSS 1% · 54.1 KiB

~1.0 MiB of savings available

Remove unused JavaScript: 1.0 MiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

158 resources			7.5 MiB

HTTP Caching

Action

no-store (uncacheable)

FIX

no-store (uncacheable)

Cache-Control: no-store prevents all caching

Intentional for dynamic content, but increases server load for every page view.

Got: no-store

No ETag or Last-Modified header

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

Cache-Control

no-store

Directive	Value	Meaning
no-store	—	Never cache this response

Image Optimization

Action

60 images, 0 KB saveable

REVIEW

60 images, 0 KB saveable

https://smartasset.com/cds-images/homepage/amp-gra... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://smartasset.com/cds-images/homepage/right_c... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://smartasset.com/cds-images/homepage/buck-mo... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://smartasset.com/cds-images/homepage/left_ch... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

60 images 3.2 MB

0 oversized -0 KB

51 legacy format

4 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

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

Third-Party Impact

39% third-party, 0 ms blocking

PASS

39% third-party, 0 ms blocking

Third-party code accounts for 39% of page weight (2.9 MiB of 7.5 MiB)

Third-party blocking time is low (0 ms)

61%

39%

First-party Third-party

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

3 fonts (233 KB)

PASS

3 fonts (233 KB)

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

Web fonts

233 KB total

Render-blocking

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

630c17af355fa44e-s.p.woff2 woff2 swap

Size 43 KB

Load time 258 ms

Start 396 ms

Risk FOUT — text flashes from fallback to web font

e807dee2426166ad-s.p.woff2 woff2 swap

Size 42 KB

Load time 315 ms

Start 397 ms

Risk FOUT — text flashes from fallback to web font

fa-solid-900.71ed02b4.w... woff2 swap

Size 148 KB

Load time 268 ms

Start 785 ms

Risk FOUT — text flashes from fallback to web font

Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need

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 ~74 KB and ~148 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

39 hints, 0 missing preconnects

PASS

39 hints, 0 missing preconnects

Page uses 39 resource hint(s)

Current Resource Hints

preconnect

—

preload

+29

dns-prefetch

—

prefetch

—

39 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

158 requests over 6814ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

61% of JavaScript execution is third-party

First-party Third-party 7538ms · 2223KB · €131/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Unattributable Unattributable	Other	1383ms	0 KB	—	€24/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	1026ms	195 KB	33%	€18/mo	Costly
Optimizely cdn.optimizely.com	A/B Testing	630ms	236 KB	53%	€11/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	569ms	144 KB	39%	€10/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	400ms	177 KB	39%	€7/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	393ms	177 KB	42%	€7/mo	Costly
mapixl.com mapixl.com	Other	381ms	16 KB	—	€7/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	334ms	144 KB	40%	€6/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	333ms	144 KB	39%	€6/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	302ms	155 KB	44%	€5/mo	Costly
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	241ms	188 KB	76%	€4/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	209ms	129 KB	47%	€4/mo	Costly
Facebook Pixel connect.facebook.net	Advertising	175ms	97 KB	38%	€3/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	158ms	174 KB	41%	€3/mo	Optional
Mixpanel cdn.mxpnl.com	Analytics	151ms	32 KB	—	€3/mo	Optional
b-code.liadm.com b-code.liadm.com	Other	135ms	46 KB	—	€2/mo	Optional
Google Analytics www.google-analytics.com	Analytics	129ms	21 KB	—	€2/mo	Optional
securepubads.g.doubleclick.net securepubads.g.doubleclick.net	Other	123ms	34 KB	—	€2/mo	Optional
Facebook Pixel connect.facebook.net	Advertising	113ms	39 KB	—	€2/mo	Optional
ajax.googleapis.com ajax.googleapis.com	Other	89ms	34 KB	70%	€2/mo	Optional
api.ipify.org api.ipify.org	Other	84ms	0 KB	—	€1/mo	Optional
Twitter/X Pixel static.ads-twitter.com	Advertising	66ms	13 KB	—	€1/mo	Optional
Bing UET bat.bing.com	Advertising	63ms	16 KB	—	€1/mo	Optional
Bing UET bat.bing.com	Advertising	53ms	15 KB	—	€1/mo	Optional

Unattributable

Other

Costly

Execution 1383ms

Transfer 0 KB

Monthly Cost €24/mo

Google Tag Manager

Tag Manager

Costly

Execution 1026ms

Transfer 195 KB

Unused 33%

Monthly Cost €18/mo

Optimizely

A/B Testing

Costly

Execution 630ms

Transfer 236 KB

Unused 53%

Monthly Cost €11/mo

Google Tag Manager

Tag Manager

Costly

Execution 569ms

Transfer 144 KB

Unused 39%

Monthly Cost €10/mo

Google Tag Manager

Tag Manager

Costly

Execution 400ms

Transfer 177 KB

Unused 39%

Monthly Cost €7/mo

Google Tag Manager

Tag Manager

Costly

Execution 393ms

Transfer 177 KB

Unused 42%

Monthly Cost €7/mo

mapixl.com

Other

Costly

Execution 381ms

Transfer 16 KB

Monthly Cost €7/mo

Google Tag Manager

Tag Manager

Costly

Execution 334ms

Transfer 144 KB

Unused 40%

Monthly Cost €6/mo

Google Tag Manager

Tag Manager

Costly

Execution 333ms

Transfer 144 KB

Unused 39%

Monthly Cost €6/mo

Google Tag Manager

Tag Manager

Costly

Execution 302ms

Transfer 155 KB

Unused 44%

Monthly Cost €5/mo

securepubads.g.doubleclick.net

Other

Costly

Execution 241ms

Transfer 188 KB

Unused 76%

Monthly Cost €4/mo

Google Tag Manager

Tag Manager

Costly

Execution 209ms

Transfer 129 KB

Unused 47%

Monthly Cost €4/mo

Facebook Pixel

Advertising

Optional

Execution 175ms

Transfer 97 KB

Unused 38%

Monthly Cost €3/mo

Google Tag Manager

Tag Manager

Optional

Execution 158ms

Transfer 174 KB

Unused 41%

Monthly Cost €3/mo

Mixpanel

Analytics

Optional

Execution 151ms

Transfer 32 KB

Monthly Cost €3/mo

b-code.liadm.com

Other

Optional

Execution 135ms

Transfer 46 KB

Monthly Cost €2/mo

Google Analytics

Analytics

Optional

Execution 129ms

Transfer 21 KB

Monthly Cost €2/mo

securepubads.g.doubleclick.net

Other

Optional

Execution 123ms

Transfer 34 KB

Monthly Cost €2/mo

Facebook Pixel

Advertising

Optional

Execution 113ms

Transfer 39 KB

Monthly Cost €2/mo

ajax.googleapis.com

Other

Optional

Execution 89ms

Transfer 34 KB

Unused 70%

Monthly Cost €2/mo

api.ipify.org

Other

Optional

Execution 84ms

Transfer 0 KB

Monthly Cost €1/mo

Twitter/X Pixel

Advertising

Optional

Execution 66ms

Transfer 13 KB

Monthly Cost €1/mo

Bing UET

Advertising

Optional

Execution 63ms

Transfer 16 KB

Monthly Cost €1/mo

Bing UET

Advertising

Optional

Execution 53ms

Transfer 15 KB

Monthly Cost €1/mo

These scripts may cost more than they're worth

Unattributable adds 1383ms and costs ~€24/month
Google Tag Manager adds 1026ms and costs ~€18/month
Optimizely adds 630ms and costs ~€11/month
Google Tag Manager adds 569ms and costs ~€10/month
Google Tag Manager adds 400ms and costs ~€7/month
Google Tag Manager adds 393ms and costs ~€7/month
mapixl.com adds 381ms and costs ~€7/month
Google Tag Manager adds 334ms and costs ~€6/month
Google Tag Manager adds 333ms and costs ~€6/month
Google Tag Manager adds 302ms and costs ~€5/month
securepubads.g.doubleclick.net adds 241ms and costs ~€4/month
Google Tag Manager adds 209ms and costs ~€4/month

61% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Unattributable takes 1383ms 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 1026ms 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

Optimizely takes 630ms 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 Optimizely'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 569ms 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 400ms 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 393ms 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

mapixl.com takes 381ms 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 334ms 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 333ms 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 302ms 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 241ms 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

Google Tag Manager takes 209ms 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 ajax.googleapis.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.