www.vanderbilt.edu speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 13:58 UTC. Grade D (65/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 66 ms 55%
- TCP connect 6 ms 5%
- Server wait 47 ms 39%
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
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 server answered in 119 ms, which is fast: almost all of the wait is the page itself, not the host.
- The page transfers 24.89 MB over 26 request(s). Media files are 89% of it, so let video load on demand instead of on first paint.
- The HTML itself arrives br-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- 90% of the weight comes from other hosts (analytics, fonts, embeds), which also means their slow day becomes your slow day.
- The largest element painted at 1.61 s, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.025), so nothing jumps under the reader's cursor.
- The main thread was blocked for 1.32 s, so taps and scrolling wait while scripts run.
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.
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.
Page weight by type
What the page is made of
Transfer size, compressed as sent. 26 request(s) in total, 24.89 MB across all of them.
Top issues
Image delivery and format
high impact4 image(s) over 200 KB and 8 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 impact9 render-blocking resource(s) in the document head (3 script(s), 6 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.
Serve everything over HTTPS
high impact4 asset(s) are still requested over plain HTTP.
Fix: Redirect HTTP to HTTPS at the server, and rewrite the remaining http:// asset references so nothing depends on browser upgrading.
Total page weight
high impactThe page transfers 24.89 MB across 26 request(s), with the document itself at 39.3 KB.
Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.
Cache static assets
medium impact16 asset(s) answer without a Cache-Control max-age, so browsers revalidate them on every visit.
Fix: Version filenames on change and serve them with a long max-age plus immutable. That is what makes a returning visitor fast.
Waterfall
Slowest requests
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
| Request | Type | Status | Time | Size |
|---|---|---|---|---|
| https://cdn.vanderbilt.edu/vu-video/vu-home/Homepage_Feb2026_ADA-Compliant_FinalH265_comp.mp4 3rd party | media | 200 | 1.28 s | 22.12 MB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/07/person-book-library-1.jpeg | images | 200 | 1.22 s | 164.5 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/06/graduation-line.jpg | images | 200 | 1.22 s | 142.4 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/04/graduation-line.jpeg | images | 200 | 1.22 s | 275.9 KB |
| https://www.vanderbilt.edu/wp-includes/css/dist/block-library/style.min.css?ver=6.1.14 | css | 200 | 1.22 s | 11.5 KB |
| https://www.vanderbilt.edu/wp-content/themes/anchordown-futurevu/library/scripts/home-topper-video-controls.js?ver=1.0 | javascript | 200 | 1.12 s | 726 B |
| https://www.vanderbilt.edu/wp-content/themes/anchordown-futurevu/library/scripts/story-list.js?ver=1.0 | javascript | 200 | 1.09 s | 5.8 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/bb-plugin/cache/8055-layout.js?ver=44f3722f05a1c035e4ac7e2670d47374 | javascript | 200 | 1.07 s | 8.0 KB |
| https://www.vanderbilt.edu/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.3.2 | javascript | 200 | 1.06 s | 4.1 KB |
| https://www.vanderbilt.edu/wp-includes/js/jquery/jquery.min.js?ver=3.6.1 | javascript | 200 | 1.05 s | 30.0 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2026/07/CorneliusStatue.jpg | images | 200 | 1.04 s | 656.9 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/06/student-biking-with-guitar.jpg | images | 200 | 1.02 s | 123.7 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/06/downtown-nashville-aerial.jpg | images | 200 | 1.02 s | 551.3 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/06/person-book-library-1.jpg | images | 200 | 1.02 s | 110.3 KB |
| https://cdn.vanderbilt.edu/vu-futurevu/static/img/favicons/favicon-on-dark.png 3rd party | images | 200 | 1.02 s | 1.4 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/04/bronson-ingram-facade.jpg | images | 200 | 1.01 s | 452.0 KB |
| https://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/06/professor-in-classroom.jpg | images | 200 | 1.01 s | 45.9 KB |
| https://www.googletagmanager.com/ns.html?id=GTM-MH87FL 3rd party | html | 200 | 997 ms | 92 B |
| https://cdn.vanderbilt.edu/vu-futurevu/assets/vu.js?ver=20260908 3rd party | javascript | 200 | 993 ms | 153.1 KB |
| https://cdn.hu-manity.co/hu-banner.min.js 3rd party | javascript | 200 | 993 ms | 53.1 KB |
| https://www.vanderbilt.edu/wp-content/plugins/page-links-to/dist/new-tab.js?ver=3.3.7 | javascript | 200 | 938 ms | 12.3 KB |
| http://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/06/academics-happy-class.jpg | html | 301 | 933 ms | 167 B |
| http://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/04/03ebronson.jpg | html | 301 | 933 ms | 167 B |
| http://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/04/science.jpeg | html | 301 | 631 ms | 167 B |
| http://www.vanderbilt.edu/wp-content/uploads/sites/3/2021/06/people-on-lawn-1024x683.jpg | html | 301 | 582 ms | 167 B |
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