www.rs-online.com speed test — 20 Oct 2026

What these numbers mean

• The server answered in 152 ms, which is fast: almost all of the wait is the page itself, not the host.
• The page transfers 459.1 KB over 12 request(s), which is lean. Images files are 63% of it, so resize and recompress the largest images before anything else.
• The HTML itself arrives gzip-compressed.
• It runs over HTTP/2, so the assets share a connection instead of opening one each.
• 94% 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 1.82 s, inside the 2.5 s Google calls good.
• Layout stayed still (CLS 0.054), so nothing jumps under the reader's cursor.
• The main thread was blocked for 138 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.