getbootstrap.com speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 13:03 UTC. Grade A (97/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 90 ms 57%
- TCP connect 2 ms 1%
- Server wait 67 ms 42%
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 158 ms, which is fast: almost all of the wait is the page itself, not the host.
- The page transfers 145.0 KB over 14 request(s), which is lean. Css files are 41% of it, so split the stylesheet so the first screen does not download the whole site.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- The largest element painted at 528 ms, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.003), so nothing jumps under the reader's cursor.
- The main thread was blocked for 56 ms in total, which is not enough to feel.
Fix first: Render-blocking resources - 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.
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. 14 request(s) in total, 145.0 KB across all of them.
Top issues
Render-blocking resources
high impact3 render-blocking resource(s) in the document head (0 script(s), 3 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.
Cache static assets
medium impact1 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://getbootstrap.com/docs/6.0/assets/img/favicons/favicon-16x16.png | images | 200 | 751 ms | 525 B |
| https://getbootstrap.com/docs/6.0/assets/img/favicons/apple-touch-icon.png | images | 200 | 725 ms | 7.1 KB |
| https://getbootstrap.com/docs/6.0/assets/Scripts.astro_astro_type_script_index_0_lang.G87Cecqi.js | javascript | 200 | 704 ms | 1.6 KB |
| https://fonts.googleapis.com/css2?family=Geist+Mono:[email protected]&family=Geist:[email protected]&display=swap 3rd party | css | 200 | 669 ms | 380 B |
| https://getbootstrap.com/docs/6.0/assets/img/favicons/manifest.json | other | 200 | 654 ms | 216 B |
| https://getbootstrap.com/docs/6.0/assets/CodeCopy.astro_astro_type_script_index_0_lang.Dz80MlN5.js | javascript | 200 | 652 ms | 255 B |
| https://getbootstrap.com/docs/6.0/assets/ScssProd.2L6G2bjf.css | css | 200 | 642 ms | 8.3 KB |
| https://getbootstrap.com/docs/6.0/assets/img/favicons/favicon.ico | images | 200 | 642 ms | 4.5 KB |
| https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom&format=responsive 3rd party | javascript | 200 | 635 ms | 10.3 KB |
| https://getbootstrap.com/docs/6.0/assets/DocsScripts.astro_astro_type_script_index_0_lang.C1IgVFhS.js | javascript | 200 | 631 ms | 5.9 KB |
| https://getbootstrap.com/docs/6.0/assets/img/favicons/favicon-32x32.png | images | 200 | 631 ms | 1.1 KB |
| https://getbootstrap.com/docs/6.0/dist/css/bootstrap.min.css | css | 200 | 600 ms | 51.5 KB |
| https://getbootstrap.com/docs/6.0/assets/Navigation.astro_astro_type_script_index_0_lang.DDEt4Qt4.js | javascript | 200 | 591 ms | 40.0 KB |
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