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.

3.32 s

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

14.14 s

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

116 ms

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.

4.87 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.

14.14 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

9 PASS 3 REVIEW 3 FIX

Page Weight Budget

Action

9.5 MB transferred, 69 requests

FIX

9.5 MB transferred, 69 requests

Page weighs 10.6 MB (9.5 MB transferred)

Images are 8.9 MB — compress or use modern formats

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

Got: 8.9 MB

69 HTTP requests

Estimated 2.0 g CO2 per page load

9.5 MB transferred

69 requests

2.0 g CO2 per page load

Images 8.9 MiB 94%

JavaScript 473.5 KiB 5%

CSS 59.9 KiB 1%

HTML 12.5 KiB 0%

Other 5.7 KiB 0%

Other 543 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

JS Bundles

Action

16 scripts, 170 KB unused

FIX

16 scripts, 170 KB unused

https://www.googletagmanager.com/gtag/js?id=G-ZZ9L...: 67 KB unused (43%)

Consider code splitting or tree shaking to reduce unused code.

https://www.googletagmanager.com/gtag/js?id=UA-397...: 63 KB unused (55%)

Consider code splitting or tree shaking to reduce unused code.

https://az.gov/sites/default/files/js/js_wP_K6IzGc...: 39 KB unused (44%)

Consider code splitting or tree shaking to reduce unused code.

https://az.gov/sites/default/files/js/js_wP_K6IzGc...: unminified — 51 KB could be saved

https://az.gov/sites/default/files/js/js_YD9ro0PAq...: unminified — 11 KB could be saved

Total unused JavaScript: 170 KB

170 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=G-ZZ9LGEDKEW&cx=c&gtm=4e64k0	157 KB	67 KB (43%)	✓	3rd
https://www.googletagmanager.com/gtag/js?id=UA-39773230-1	116 KB	63 KB (55%)	✓	3rd
https://az.gov/sites/default/files/js/js_wP_K6IzGcdCMFXbjtfKp9vuIMrVxRA8ub2i125Sv9jY.js	90 KB	39 KB (44%)	✗	1st
https://az.gov/sites/default/files/js/js_rSZmM_C6ErJgSf1Ywt9MyoQ7J2cAjMsn1upJN2IAhSE.js	2 KB	—	✓	1st
https://az.gov/sites/default/files/js/js_YD9ro0PAqY25gGWrTki6TjRUG8TdokmmxjfqpNNfzVU.js	45 KB	—	✗	1st
https://az.gov/sites/default/files/js/js_XcU4CFOGPP6W7FpHdz0wAprMjDfMSbkpyj5pIhtHbhI.js	8 KB	—	✗	1st
https://az.gov/sites/default/files/js/js_MbJ8uSt8FnczZCkuJ0IGn9WnZ54qnlCrOtJTZu-bF54.js	2 KB	—	✓	1st
https://az.gov/sites/default/files/js/js_MMvzk3piKlIBWcpWgwp4n53pFIdJ_fJD-hKGDJaTCrw.js	7 KB	—	✓	1st
https://az.gov/sites/default/files/js/js_NpX2cwCeepkWZZ194B6-ViyVBHleaYLOx5R9EWBOMRU.js	2 KB	—	✓	1st
https://az.gov/sites/default/files/js/js_TWKm9-6PK6lnTvWvkAb3sZE01kZEDuEoVWsRRP4CQw0.js	1 KB	—	✓	1st

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

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: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0

No ETag or Last-Modified header

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

Cache-Control

private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0

Directive	Value	Meaning
private	—	Only browser cache, not CDN/proxy
max-age	0	Cache for 0 seconds
no-store	—	Never cache this response
no-cache	—	Cache but always revalidate first
must-revalidate	—	Must recheck with server after expiry
post-check	0
pre-check	0

Image Optimization

41 images, 0 KB saveable

REVIEW

41 images, 0 KB saveable

https://az.gov/sites/all/themes/azgov/img/icon-sea... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

41 images 8.9 MB

0 oversized -0 KB

41 legacy format

1 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

JS Execution Cost

Action

1295ms total JS execution

REVIEW

1295ms total JS execution

Unattributable: 434ms CPU time

https://az.gov/sites/default/files/js/js_wP_K6IzGc...: 289ms CPU time

https://az.gov/sites/default/files/js/js_YD9ro0PAq...: 221ms CPU time

https://www.googletagmanager.com/gtag/js?id=G-ZZ9L...: 161ms CPU time

https://az.gov/: 97ms CPU time

Third-party scripts: 689ms (53% of total)

Main Thread Breakdown

Script Evaluation 42% Other 38% Script Parsing & Compilation 9% Style & Layout 7% Parse HTML & CSS 3%

Script	Total	Scripting	Parse/Compile	Party
Unattributable	434ms	67ms	0ms	3rd
https://az.gov/sites/default/files/js/js_wP_K6IzGcdCMFXbjtfKp9vuIMrVxRA8ub2i125Sv9jY.js	289ms	123ms	27ms	1st
https://az.gov/sites/default/files/js/js_YD9ro0PAqY25gGWrTki6TjRUG8TdokmmxjfqpNNfzVU.js	221ms	115ms	10ms	1st
https://www.googletagmanager.com/gtag/js?id=G-ZZ9LGEDKEW&cx=c&gtm=4e64k0	161ms	122ms	39ms	3rd
https://az.gov/	97ms	49ms	4ms	1st
https://www.googletagmanager.com/gtag/js?id=UA-39773230-1	94ms	60ms	25ms	3rd

Page Weight Inventory

Action

69 resources · 9.5 MB · 170 KB savings available

REVIEW

69 resources · 9.5 MB · 170 KB savings available

Page weight 8.5 MB over 1MB target

Got: 9.5 MB Expected: ≤ 1 MB

~170 KB of savings available

4 third-party resources (3% of weight)

8 resources over 200KB

69 resources · 9.5 MiB · 4 third-party 8.5 MiB over 1MB target

Image 94% · 8.9 MiB

JavaScript 5% · 473.5 KiB

CSS 1% · 59.9 KiB

Document 0% · 12.5 KiB

Other 0% · 543 B

~169.5 KiB of savings available

Remove unused JavaScript: 169.5 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

69 resources			9.5 MiB

A+

Third-Party Impact

3% third-party, 0 ms blocking

PASS

3% third-party, 0 ms blocking

Third-party code accounts for 3% of page weight (294.2 KiB of 9.5 MiB)

Third-party blocking time is low (0 ms)

97%

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

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

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall

69 requests over 803ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

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

INFO

53% of JavaScript execution is third-party

First-party Third-party 689ms · 273KB · $9/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Unattributable Unattributable	Other	434ms	0 KB	—	$6/mo	Costly
Google Tag Manager www.googletagmanager.com	Tag Manager	161ms	157 KB	43%	$2/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	94ms	116 KB	55%	$1/mo	Optional

Unattributable

Other

Costly

Execution 434ms

Transfer 0 KB

Monthly Cost $6/mo

Google Tag Manager

Tag Manager

Optional

Execution 161ms

Transfer 157 KB

Unused 43%

Monthly Cost $2/mo

Google Tag Manager

Tag Manager

Optional

Execution 94ms

Transfer 116 KB

Unused 55%

Monthly Cost $1/mo

These scripts may cost more than they're worth

Unattributable adds 434ms and costs ~$6/month

53% 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 434ms 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

55% 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.