robertsspaceindustries.com/en speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 15:35 UTC. Grade C (77/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 87 ms 21%
- TCP connect 48 ms 12%
- Server wait 276 ms 67%
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 first byte arrived in 411 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 412.9 KB over 26 request(s). Javascript files are 57% of it, so defer what is not needed for the first screen, and drop tags nobody uses.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- 89% of the weight comes from other hosts (analytics, fonts, embeds), which also means their slow day becomes your slow day.
Fix first: Server response time (TTFB) - Cut server think time: page cache, query indexes, fewer synchronous calls to third parties inside the request. Connection setup is distance, so a nearer region or a CDN edge helps instead.
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.
The headless browser did not capture this page when the test ran, so only the server measurements are shown.
Page weight by type
What the page is made of
Transfer size, compressed as sent. 26 request(s) in total, 412.9 KB across all of them.
Top issues
Server response time (TTFB)
high impactThe first byte arrived after 411 ms. Of that, 276 ms was the server thinking and 135 ms was connection setup. A first byte under 400 ms is what a visitor feels as instant.
Fix: Cut server think time: page cache, query indexes, fewer synchronous calls to third parties inside the request. Connection setup is distance, so a nearer region or a CDN edge helps instead.
Render-blocking resources
high impact14 render-blocking resource(s) in the document head (8 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.
Cache static assets
medium impact4 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.
Third-party weight
medium impact6 third-party host(s) serve 368.3 KB of this page. Each one is another DNS lookup, TLS handshake and point of failure you do not control.
Fix: Self-host the libraries you can, drop the tags you cannot justify, and preconnect the ones you keep.
Avoid extra redirects
medium impact1 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
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://static.robertsspaceindustries.com/rsi/static/packages/core/rsi.core.build.688f3.js 3rd party | javascript | 200 | 5.18 s | 44.6 KB |
| https://cdn.robertsspaceindustries.com/static/platform/js/third-party-analytics.js 3rd party | javascript | 200 | 5.18 s | 9.1 KB |
| https://robertsspaceindustries.com/en/cache/en/rsi-templates-js.js?v=9.588.0 | html | 200 | 5.18 s | 8.8 KB |
| https://robertsspaceindustries.com/en/cache/en/rsi-external-js.js?v=9.588.0 | html | 200 | 5.18 s | 8.8 KB |
| https://robertsspaceindustries.com/en/cookie-consent/script.js?async=1 | html | 200 | 5.18 s | 8.8 KB |
| https://cdn.robertsspaceindustries.com/static/images/favicons/rsi/favicon-16x16.png 3rd party | images | 200 | 5.18 s | 484 B |
| https://robertsspaceindustries.com/en/tag-manager/script.js?nonce= | html | 200 | 5.14 s | 8.8 KB |
| https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.1/moment-with-locales.min.js 3rd party | javascript | 200 | 5.14 s | 54.1 KB |
| https://static.robertsspaceindustries.com/rsi/static/packages/account/rsi.account.build.bc2e4.js 3rd party | javascript | 200 | 5.14 s | 33.5 KB |
| https://static.robertsspaceindustries.com/rsi/static/packages/store/rsi.store.build.a5258.js 3rd party | javascript | 200 | 5.14 s | 31.7 KB |
| https://static.robertsspaceindustries.com/pledge-store/store.js 3rd party | javascript | 200 | 5.14 s | 14.1 KB |
| https://static.robertsspaceindustries.com/plt-client/plt-client.es.js 3rd party | javascript | 200 | 5.14 s | 48 B |
| https://consent.cookiebot.com/uc.js 3rd party | javascript | 200 | 1.14 s | 27.8 KB |
| https://www.recaptcha.net/recaptcha/enterprise.js?onload=on_recaptcha_load_callback&render=6LerBOgUAAAAAKPg6vsAFPTN66Woz-jBClxdQU-o 3rd party | javascript | 200 | 1.13 s | 706 B |
| https://static.robertsspaceindustries.com/rsi/static/css/cross-brand-less.css?v=9.588.0 3rd party | css | 200 | 1.13 s | 14.0 KB |
| https://www.googletagmanager.com/ns.html?id=GTM-KHNFZPT 3rd party | html | 200 | 1.10 s | 92 B |
| https://robertsspaceindustries.com/alexandria/shared-library-ts/latest/main.js | javascript | 200 | 1.09 s | 40 B |
| https://cdn.robertsspaceindustries.com/static/images/favicons/rsi/favicon.ico 3rd party | images | 200 | 1.09 s | 4.2 KB |
| https://static.robertsspaceindustries.com/rsi/static/css/rsi-minimal.css?v=9.588.0 3rd party | css | 200 | 1.09 s | 305 B |
| https://cdn.robertsspaceindustries.com/static/fonts/univia-pro/univia-pro-400.woff2 3rd party | fonts | 200 | 1.09 s | 29.7 KB |
| https://cdn.robertsspaceindustries.com/static/fonts/univia-pro/univia-pro-800.woff2 3rd party | fonts | 200 | 1.08 s | 39.7 KB |
| https://cdn.robertsspaceindustries.com/static/fonts/univia-pro/univia-pro-700.woff2 3rd party | fonts | 200 | 1.07 s | 39.1 KB |
| https://cdn.robertsspaceindustries.com/static/images/favicons/rsi/apple-touch-icon.png 3rd party | images | 200 | 1.07 s | 3.7 KB |
| https://cdn.robertsspaceindustries.com/static/images/favicons/rsi/favicon-32x32.png 3rd party | images | 200 | 1.07 s | 780 B |
| https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.11/moment-timezone-with-data.min.js 3rd party | javascript | 200 | 1.05 s | 20.8 KB |
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