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https://www.healthcare.gov

Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
3
REVIEW
3
PASS
8
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
30
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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

3.68 s

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

16.96 s

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

3.33 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.012

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

9.38 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.

19.38 s

Page Load Progression

498 ms
996 ms
1.5 s
2.0 s
2.5 s
3.0 s
3.5 s
4.0 s
Checks
16
8 PASS 3 REVIEW 3 FIX
D
Page Weight Budget
Action
2.5 MB transferred, 136 requests
FIX
2.5 MB transferred, 136 requests
Warning::
Page weighs 7.2 MB (2.5 MB transferred)
Warning::
JavaScript is 1.6 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.6 MB
Warning::
136 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.53 g CO2 per page load
2.5 MB / 2.4 MB budget
2.5 MB transferred
136 requests
0.53 g CO2 per page load
JavaScript 1.6 MiB 63%
Images 551.2 KiB 21%
Fonts 170.8 KiB 7%
HTML 107.9 KiB 4%
Other 97.5 KiB 4%
Other 17.7 KiB 1%
Other 3.0 KiB 0%
Other 2.9 KiB 0%
CSS 1.1 KiB 0%
Other 388 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

F
JS Execution Cost
Action
9273ms total JS execution
FIX
9273ms total JS execution
Warning::
https://www.healthcare.gov/resources/ffa75c16a802d...: 2856ms CPU time
Warning::
https://www.healthcare.gov/: 1402ms CPU time
Warning::
https://www.healthcare.gov/f-GIbM/-Jc/Pah/iCR9fw/J...: 1154ms CPU time
Warning::
Unattributable: 915ms CPU time
Warning::
https://cdn.resonate.com/analytics.js/v1/101188123...: 454ms CPU time
Info::
Third-party scripts: 3105ms (33% of total)

Main Thread Breakdown

Script Evaluation 70% Other 14% Script Parsing & Compilation 6% Style & Layout 5%
ScriptTotalScriptingParse/CompileParty
https://www.healthcare.gov/resources/ffa75c16a802d2fdecf0b63e654f8d2f92400132c28f52856ms2565ms28ms1st
https://www.healthcare.gov/1402ms872ms19ms1st
https://www.healthcare.gov/f-GIbM/-Jc/Pah/iCR9fw/J5rihQ7haOOL0zuw/bxsOIQlM/FS4Wfnw/heUMB1154ms780ms55ms1st
Unattributable915ms68ms0ms3rd
https://cdn.resonate.com/analytics.js/v1/101188123/analytics-xp.min.js454ms392ms50ms3rd
https://www.healthcare.gov/assets/learn/app-1d06baf3ad6148ad0005.js450ms253ms83ms1st
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L395ms343ms49ms3rd
https://cdn1.adoberesources.net/alloy/2.6.4/alloy.min.js311ms285ms24ms3rd
https://tags.tiqcdn.com/utag/cmsgov/healthcare-learn/prod/utag.147.js?utv=ut4.47.202010261933269ms265ms1ms3rd
https://js-agent.newrelic.com/nr-spa-1.290.0.min.js196ms168ms13ms3rd

Showing top 10 of 18 scripts

F
JS Bundles
Action
49 scripts, 349 KB unused
FIX
49 scripts, 349 KB unused
Warning::
https://www.healthcare.gov/assets/learn/app-1d06ba...: 101 KB unused (48%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.healthcare.gov/assets/learn/app-1d06ba...: unminified — 73 KB could be saved
Warning::
https://www.healthcare.gov/assets/learn/3e380834a0...: 70 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.healthcare.gov/assets/learn/3e380834a0...: unminified — 48 KB could be saved
Warning::
https://www.googletagmanager.com/gtag/js?id=G-CSLL...: 60 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://gov1.siteintercept.qualtrics.com/dxjsmodul...: 54 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.healthcare.gov/f-GIbM/-Jc/Pah/iCR9fw/J...: 37 KB unused (21%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 349 KB
349 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.healthcare.gov/assets/learn/app-1d06baf3ad6148ad0005.js211 KB101 KB (48%)✗1st
https://www.healthcare.gov/assets/learn/3e380834a0bc3f589d19d83499f6aac68c0e0c35-a2150ab1c4dc84fbee53.js183 KB70 KB (38%)✗1st
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L147 KB60 KB (41%)✓3rd
https://gov1.siteintercept.qualtrics.com/dxjsmodule/5.4c7b13dfb07ad4e60d4b.chunk.js?Q_CLIENTVERSION=2.45.0&Q_CLIENTTYPE=web&Q_BRANDID=medicare74 KB54 KB (75%)✓3rd
https://www.healthcare.gov/f-GIbM/-Jc/Pah/iCR9fw/J5rihQ7haOOL0zuw/bxsOIQlM/FS4Wfnw/heUMB177 KB37 KB (21%)✓1st
https://www.healthcare.gov/assets/learn/22de12bb-9ee0b44cd6abf6788b15.js52 KB27 KB (53%)✗1st
https://dap.digitalgov.gov/web-vitals/dist/web-vitals.attribution.iife.js5 KB—✓3rd
https://zn9nsdspghk6lylq5-medicare.gov1.siteintercept.qualtrics.com/WRSiteInterceptEngine/?Q_ZID=ZN_9NSDsPGhK6LYlq5&Q_LOC=https%3A%2F%2Fwww.healthcare.gov%2F5 KB—✓3rd
https://www.healthcare.gov/resources/ffa75c16a802d2fdecf0b63e654f8d2f92400132c28f5/e/65257_1825202523.js7 KB—✓1st
https://www.healthcare.gov/resources/ffa75c16a802d2fdecf0b63e654f8d2f92400132c28f5/e/64885_1825202492.js2 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

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

C
Image Optimization
Action
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Warning::
https://www.healthcare.gov/assets/learn/static/fea... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.healthcare.gov/assets/learn/static/fea... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.healthcare.gov/assets/learn/static/fea... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://gov1.siteintercept.qualtrics.com/WRQualtri... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11 images 551 KB
0 oversized -0 KB
5 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0
REVIEW
max-age=0
Info::
Cache-Control header is set
Got: max-age=0
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present
Cache-Control

max-age=0

DirectiveValueMeaning
max-age0Cache for 0 seconds
A
Third-Party Impact
36% third-party, 0 ms blocking
PASS
36% third-party, 0 ms blocking
Info::
Third-party code accounts for 36% of page weight (947.4 KiB of 2.5 MiB)
Info::
Third-party blocking time is low (0 ms)
64%
36%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
4 fonts (171 KB)
PASS
4 fonts (171 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

171 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 3.7 s LCP 17.0 shttps://www.healthcare.gov/fonts/glyphicons-regular.woff2glyphicons-regular.woff2 https://www.healthcare.gov/fonts/glyphicons-regular.woff2 — 94.7 KiB — 0 ms — font-display: swaphttps://www.healthcare.gov/assets/learn/static/opensans-regular-webfont-ca4dd8357b26187274d0f8ddc8e98229.woff2opensans-regular-webfon... https://www.healthcare.gov/assets/learn/static/opensans-regular-webfont-ca4dd8357b26187274d0f8ddc8e98229.woff2 — 11.8 KiB — 0 ms — font-display: swaphttps://www.healthcare.gov/assets/learn/static/opensans-bold-webfont-92e570c6123d47c072f756c3bd06d93e.woff2opensans-bold-webfont-9... https://www.healthcare.gov/assets/learn/static/opensans-bold-webfont-92e570c6123d47c072f756c3bd06d93e.woff2 — 11.9 KiB — 0 ms — font-display: swaphttps://surveys.cms.gov/jfe/static/dist/v2/a/72-Regular.ce13ee45.woff272-Regular.ce13ee45.woff2 https://surveys.cms.gov/jfe/static/dist/v2/a/72-Regular.ce13ee45.woff2 — 52.5 KiB — 0 ms — font-display: swap
glyphicons-regular.woff2 woff2 swap
Size 95 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
opensans-regular-webfon... woff2 swap
Size 12 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
opensans-bold-webfont-9... woff2 swap
Size 12 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
72-Regular.ce13ee45.woff2 woff2 swap
Size 52 KB
Load time 0 ms
Start 0 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
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
—
preload
2
dns-prefetch
—
prefetch
—

2 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
136 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
33% of JavaScript execution is third-party
First-party Third-party 3105ms · 424KB · $10/mo
Unattributable
Other
Costly
Execution 915ms
Transfer 0 KB
Monthly Cost $3/mo
cdn.resonate.com
Other
Costly
Execution 454ms
Transfer 45 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Costly
Execution 395ms
Transfer 147 KB
Unused 41%
Monthly Cost $1/mo
cdn1.adoberesources.net
Other
Costly
Execution 311ms
Transfer 20 KB
Monthly Cost $1/mo
tags.tiqcdn.com
Other
Costly
Execution 269ms
Transfer 1 KB
Monthly Cost $1/mo
js-agent.newrelic.com
Other
Optional
Execution 196ms
Transfer 33 KB
Monthly Cost $1/mo
gov1.siteintercept.qualtrics.com
Other
Optional
Execution 165ms
Transfer 36 KB
Monthly Cost $1/mo
tealium-tags.healthcare.gov
Other
Optional
Execution 157ms
Transfer 27 KB
Monthly Cost $0/mo
gov1.siteintercept.qualtrics.com
Other
Optional
Execution 122ms
Transfer 74 KB
Unused 75%
Monthly Cost $0/mo
gov1.siteintercept.qualtrics.com
Other
Optional
Execution 64ms
Transfer 32 KB
Monthly Cost $0/mo
dap.digitalgov.gov
Other
Optional
Execution 58ms
Transfer 9 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • Unattributable adds 915ms and costs ~$3/month
  • cdn.resonate.com adds 454ms and costs ~$1/month
  • Google Tag Manager adds 395ms and costs ~$1/month
  • cdn1.adoberesources.net adds 311ms and costs ~$1/month
  • tags.tiqcdn.com adds 269ms and costs ~$1/month

Unattributable takes 915ms 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.resonate.com takes 454ms 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 395ms 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

cdn1.adoberesources.net takes 311ms 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.tiqcdn.com takes 269ms 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 gov1.siteintercept.qualtrics.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.

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