www.cms.gov speed test — 20 Oct 2026

Measured from the wfix.shop server on 20 October 2026 at 13:58 UTC. Grade A (92/100), with the screenshots, the timings and the fixes that matter.

https://www.cms.gov/

20 October 2026 at 13:58 UTC · Free test · report pt_6887cec55848
Grade
A
92/100
Performance98/100
Structure82/100

12 audit(s) passed, 4 need work

First byte (TTFB)220 msmeasured from this server
Fully loaded1.10 sfirst byte + slowest asset
Requests16document + assets
Page weight1.01 MBcompressed transfer
HTML document30.8 KBbr
ProtocolHTTP/3server not sent
Third-party536 Bother hosts

Where the first byte went

  • DNS lookup 60 ms 27%
  • TCP connect 36 ms 16%
  • Server wait 125 ms 57%

Measured on the connection that fetched the HTML. Every other request on the page waits for the end of this bar before it can start.

How this page compares

First bytefaster than 90% of 4,999 pages tested here220 ms against a median of 449 ms
Page weightheavier than 63% of 4,999 pages tested here1.01 MB against a median of 650.3 KB
Fully loadedfaster than 90% of 4,999 pages tested here1.10 s against a median of 1.84 s
Requestssends fewer requests than 83% of 4,999 pages tested here16 against a median of 26

Every report published here is in this comparison, so it is a reference population of pages tested from one server - not a benchmark of the whole web.

What these numbers mean

  • The first byte arrived in 220 ms. That is workable, and the cheapest win left is caching or a warmer connection.
  • The page transfers 1.01 MB over 16 request(s). Images files are 78% of it, so resize and recompress the largest images before anything else.
  • The HTML itself arrives br-compressed.
  • It runs over HTTP/3, so the assets share a connection instead of opening one each.
  • The largest element painted at 824 ms, inside the 2.5 s Google calls good.
  • Layout shift is 0.125 (good is under 0.1): something without a reserved size is loading late - an image, an ad, or a font swap.
  • The main thread was blocked for 36 ms in total, which is not enough to feel.

Fix first: Image delivery and format - Serve WebP or AVIF with a JPEG fallback, size images to the space they occupy, and lazy-load anything below the fold. Images are usually more than half of a slow page.

Read on one shared server, not a visitor's phone: use it to compare pages against each other, not as a promise about every connection. We fix what these tests find.

Screenshot

What the page looks like

Loaded in headless Chromium on this server. Click an image to open it full size.

Mobile screenshot of www.cms.gov
Mobile 390 × 844 · 128.9 KB · page is 5956 px tall

Browser render

The same URL loaded in a real browser, so these are the readings curl cannot produce. The grade above is still built from the server measurements.

Largest contentful paint824 msgood is under 2.5 s
Cumulative layout shift0.125under 0.1 is stable
Total blocking time36 mslong tasks during load
First contentful paint700 msfirst content on screen
Browser page weight1.99 MB51 request(s), scripts included
Largest contentful paint824 ms
Goodgood under 2.5 s, poor over 4 s
Cumulative layout shift0.125
Needs improvementgood under 0.1, poor over 0.25
Total blocking time36 ms
Goodgood under 200 ms, poor over 600 ms

Page weight by type

What the page is made of

Images 6 requests
800.8 KB 78%
Javascript 5 requests
115.7 KB 11%
Css 4 requests
83.2 KB 8%

Transfer size, compressed as sent. 16 request(s) in total, 1.01 MB across all of them.

Top issues

Image delivery and format

high impact

1 image(s) over 200 KB and 2 large image(s) still served as JPEG or PNG.

Fix: Serve WebP or AVIF with a JPEG fallback, size images to the space they occupy, and lazy-load anything below the fold. Images are usually more than half of a slow page.

Render-blocking resources

high impact

5 render-blocking resource(s) in the document head (1 script(s), 4 stylesheet(s)). The page cannot paint until each one arrives.

Fix: Add defer or async to scripts that do not change the first paint, inline the critical CSS, and load the rest with media="print" plus an onload swap.

Total page weight

medium impact

The page transfers 1.01 MB across 16 request(s), with the document itself at 30.8 KB.

Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.

Avoid extra redirects

medium impact

1 redirect hop(s) before the page load started, each one a full round trip before the first byte.

Fix: Link to the canonical URL (and make sure http, the apex domain and www all point at it) so no visitor pays a redirect first.

Waterfall

Slowest requests

CSSwww.cms.gov/sites/default/files/css/css_Aq9YpWPelX…
878 ms
CSSwww.cms.gov/sites/default/files/css/css_0PpesCKzJs…
873 ms
JAVASCRIPTwww.cms.gov/modules/contrib/ckeditor_accordion/js/…
797 ms
JAVASCRIPTwww.cms.gov/sites/default/files/js/js_nilyVrRly-jg…
773 ms
IMAGESwww.cms.gov/themes/custom/cms_evo/logo.svg
769 ms
CSSwww.cms.gov/sites/default/files/css/css_DB-V5oCtEJ…
751 ms
JAVASCRIPTtealium-tags.cms.gov/cms-www/prod/utag.sync.js
736 ms
CSSwww.cms.gov/sites/default/files/css/css_s2MmQlcs_P…
708 ms
IMAGESwww.cms.gov/themes/custom/cms_evo/images/cms.gov-f…
682 ms
IMAGESwww.cms.gov/sites/default/files/styles/max_width_t…
681 ms

Each bar is one request's own response time, scaled to the slowest. Assets were fetched in parallel, so the bars overlap in real time rather than stacking. first party third party

RequestTypeStatusTimeSize
https://www.cms.gov/sites/default/files/css/css_Aq9YpWPelX2HLt3Ty9tKWGOrXla_WJOW-Oi0_-jjvpE.css?delta=2&language=en&theme=cms_evo&include=eJxVjVtuxCAMRTeUhCVFF3CDNQYjG9JOV9_ptM2oP7Z17sPgAN4P0QhZ0o0yD7UdKall1haua3szbYNaXlL1nU4N37topY6D_sFKByq1eUH66GgZUWgd2jmtCfbqKWS6OsFSWaNoul2KkXdtzucjh-hPLrjrHB4i_PFVjUK22SEb5tCktQuNX6GpVQh_0tJhOAy9-J_7RbbZ-ozCXigvfvdB9af8ZHr38Jxb1TyFvgDpMnUqcss200878 ms688 B
https://www.cms.gov/sites/default/files/css/css_0PpesCKzJsWCBwmpg1DzEn6kGraVmIxKnYkqruRtjeE.css?delta=3&language=en&theme=cms_evo&include=eJxVjVtuxCAMRTeUhCVFF3CDNQYjG9JOV9_ptM2oP7Z17sPgAN4P0QhZ0o0yD7UdKall1haua3szbYNaXlL1nU4N37topY6D_sFKByq1eUH66GgZUWgd2jmtCfbqKWS6OsFSWaNoul2KkXdtzucjh-hPLrjrHB4i_PFVjUK22SEb5tCktQuNX6GpVQh_0tJhOAy9-J_7RbbZ-ozCXigvfvdB9af8ZHr38Jxb1TyFvgDpMnUqcss200873 ms20.9 KB
https://www.cms.gov/modules/contrib/ckeditor_accordion/js/accordion.frontend.min.js?tn68ypjavascript200797 ms20 B
https://www.cms.gov/sites/default/files/js/js_nilyVrRly-jgmK3g5cw1O4FNTVtkCpfX4CjSgAVKdC0.js?scope=footer&delta=3&language=en&theme=cms_evo&include=eJxtj0EWgzAIRC9kzJF8hEw1r0mwhNj29tVFbReumDcfGKDkKU1zlkB54DtiMtGJmEVjkupPNd5UqqHGgUubsImnDDX3RHAsZZWKaic7asFMBbWfJl4r1Ughw5msiR2T_tYtoAh1DaS8uNbnGc324PbXofLlIQvfL8nVpKLtB7a07ckUdl8UPmpfKY_UTY4HMgyDgXLqJT38qSZq78offIBzNgjavascript200773 ms73.4 KB
https://www.cms.gov/themes/custom/cms_evo/logo.svgimages200769 ms6.3 KB
https://www.cms.gov/sites/default/files/css/css_DB-V5oCtEJGvaqcfrCJstt0x24zPKfkQNWhmvcqvv84.css?delta=1&language=en&theme=cms_evo&include=eJxVjVtuxCAMRTeUhCVFF3CDNQYjG9JOV9_ptM2oP7Z17sPgAN4P0QhZ0o0yD7UdKall1haua3szbYNaXlL1nU4N37topY6D_sFKByq1eUH66GgZUWgd2jmtCfbqKWS6OsFSWaNoul2KkXdtzucjh-hPLrjrHB4i_PFVjUK22SEb5tCktQuNX6GpVQh_0tJhOAy9-J_7RbbZ-ozCXigvfvdB9af8ZHr38Jxb1TyFvgDpMnUqcss200751 ms56.2 KB
https://tealium-tags.cms.gov/cms-www/prod/utag.sync.js 3rd partyjavascript200736 ms536 B
https://www.cms.gov/sites/default/files/css/css_s2MmQlcs_P8RJJOsEQmNvdIGHmwtAbkXClJ4fV_Bauc.css?delta=0&language=en&theme=cms_evo&include=eJxVjVtuxCAMRTeUhCVFF3CDNQYjG9JOV9_ptM2oP7Z17sPgAN4P0QhZ0o0yD7UdKall1haua3szbYNaXlL1nU4N37topY6D_sFKByq1eUH66GgZUWgd2jmtCfbqKWS6OsFSWaNoul2KkXdtzucjh-hPLrjrHB4i_PFVjUK22SEb5tCktQuNX6GpVQh_0tJhOAy9-J_7RbbZ-ozCXigvfvdB9af8ZHr38Jxb1TyFvgDpMnUqcss200708 ms5.4 KB
https://www.cms.gov/themes/custom/cms_evo/images/cms.gov-footer.pngimages200682 ms5.9 KB
https://www.cms.gov/sites/default/files/styles/max_width_tabs/public/2026-03/responsive-tabs-priorities-photo.png?itok=AWrOCaqximages200681 ms115.6 KB
https://www.cms.gov/sites/default/files/js/js_2IrL5eCU5H2oN_aX_CR9xScflhRjfQyBnolhOclKXhU.js?scope=footer&delta=1&language=en&theme=cms_evo&include=eJxtj0EWgzAIRC9kzJF8hEw1r0mwhNj29tVFbReumDcfGKDkKU1zlkB54DtiMtGJmEVjkupPNd5UqqHGgUubsImnDDX3RHAsZZWKaic7asFMBbWfJl4r1Ughw5msiR2T_tYtoAh1DaS8uNbnGc324PbXofLlIQvfL8nVpKLtB7a07ckUdl8UPmpfKY_UTY4HMgyDgXLqJT38qSZq78offIBzNgjavascript200668 ms14.7 KB
https://www.cms.gov/sites/default/files/styles/desktop_width/public/2022-12/program_websites_section_.png?itok=dgV8aovqimages200666 ms668.4 KB
https://www.cms.gov/core/assets/vendor/jquery/jquery.min.js?v=CcLlZGVIjavascript200660 ms26.9 KB
https://www.cms.gov/themes/custom/cms_evo/images/hhslogo.pngimages200655 ms2.7 KB
https://www.cms.gov/sites/default/files/favicon.icoimages200646 ms1.8 KB
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