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https://www.healthcare.gov

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
77
GRADE
C
FIX
3
REVIEW
4
PASS
5
INFO
2

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

Mobile Desktop
80
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
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.

653 ms

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

1.25 s

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

210 ms

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

0.097

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

3.14 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.

4.29 s

Page Load Progression

467 ms
934 ms
1.4 s
1.9 s
2.3 s
2.8 s
3.3 s
3.7 s
Checks
14
5 PASS 4 REVIEW 3 FIX
F
Page Weight Budget
Action
2.9 MB transferred, 153 requests
FIX
2.9 MB transferred, 153 requests
Warning::
Page weighs 7.7 MB (2.9 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::
153 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.62 g CO2 per page load
2.9 MB / 2.4 MB budget
2.9 MB transferred
153 requests
0.62 g CO2 per page load
JavaScript 1.6 MiB 55%
Images 905.6 KiB 30%
Fonts 182.7 KiB 6%
HTML 107.9 KiB 4%
Other 103.3 KiB 3%
Other 60.6 KiB 2%
Other 2.9 KiB 0%
Other 2.9 KiB 0%
CSS 1.1 KiB 0%
Other 389 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

D
JS Execution Cost
Action
2128ms total JS execution
FIX
2128ms total JS execution
Warning::
https://www.healthcare.gov/resources/ffa75c16a802d...: 728ms CPU time
Warning::
https://www.healthcare.gov/: 519ms CPU time
Warning::
https://www.healthcare.gov/f-GIbM/-Jc/Pah/iCR9fw/J...: 251ms CPU time
Info::
Unattributable: 240ms CPU time
Info::
https://www.healthcare.gov/assets/learn/app-1d06ba...: 124ms CPU time
Info::
Third-party scripts: 507ms (24% of total)

Main Thread Breakdown

Script Evaluation 69% Other 16% Style & Layout 6% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
https://www.healthcare.gov/resources/ffa75c16a802d2fdecf0b63e654f8d2f92400132c28f5728ms634ms5ms1st
https://www.healthcare.gov/519ms234ms5ms1st
https://www.healthcare.gov/f-GIbM/-Jc/Pah/iCR9fw/J5rihQ7haOOL0zuw/bxsOIQlM/FS4Wfnw/heUMB251ms219ms26ms1st
Unattributable240ms16ms0ms3rd
https://www.healthcare.gov/assets/learn/app-1d06baf3ad6148ad0005.js124ms72ms21ms1st
https://www.googletagmanager.com/gtag/js?id=G-CSLL4ZEK4L93ms82ms10ms3rd
https://cdn.resonate.com/analytics.js/v1/101188123/analytics-xp.min.js69ms62ms4ms3rd
64854_1825202523.js52ms52ms0ms3rd
https://js-agent.newrelic.com/nr-spa-1.290.0.min.js52ms45ms3ms3rd
F
JS Bundles
Action
52 scripts, 350 KB unused
FIX
52 scripts, 350 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...: 55 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: 350 KB
350 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 KB55 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/Universal-Federated-Analytics-Min.js?agency=DHHS&subagency=CMS9 KB—✓3rd
https://js-agent.newrelic.com/nr-spa-1.290.0.min.js33 KB—✓3rd
https://www.healthcare.gov/assets/learn/framework-9b8f4d8c8e1b00ad8879.js46 KB—✓1st
https://www.healthcare.gov/resources/ffa75c16a802d2fdecf0b63e654f8d2f92400132c28f5/e/65319_1825172608.js19 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

B
Third-Party Impact
44% third-party, 0 ms blocking
REVIEW
44% third-party, 0 ms blocking
Info::
Third-party code accounts for 44% of page weight (1.3 MiB of 2.9 MiB)
Info::
Third-party blocking time is low (0 ms)
56%
44%
First-party Third-party
C
Image Optimization
Action
13 images, 0 KB saveable
REVIEW
13 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://gov1.siteintercept.qualtrics.com/WRQualtri... 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/static/q-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
13 images 906 KB
0 oversized -0 KB
6 legacy format
6 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

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+
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
5 fonts (183 KB)
PASS
5 fonts (183 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

183 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 653 ms LCP 1.3 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://www.healthcare.gov/assets/learn/static/opensans-semibold-webfont-17ded75fcfb55b7643aeeb51546c7a65.woff2opensans-semibold-webfo... https://www.healthcare.gov/assets/learn/static/opensans-semibold-webfont-17ded75fcfb55b7643aeeb51546c7a65.woff2 — 11.8 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
opensans-semibold-webfo... 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
Network Waterfall
153 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
24% of JavaScript execution is third-party
First-party Third-party 507ms · 225KB · $2/mo
Unattributable
Other
Costly
Execution 240ms
Transfer 0 KB
Monthly Cost $1/mo
Google Tag Manager
Tag Manager
Optional
Execution 93ms
Transfer 147 KB
Unused 41%
Monthly Cost $0/mo
cdn.resonate.com
Other
Optional
Execution 69ms
Transfer 45 KB
Monthly Cost $0/mo
64854_1825202523.js
Other
Optional
Execution 52ms
Transfer 0 KB
Monthly Cost $0/mo
js-agent.newrelic.com
Other
Optional
Execution 52ms
Transfer 33 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • Unattributable adds 240ms and costs ~$1/month

Unattributable takes 240ms 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

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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