www.elsevier.com speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 12:45 UTC. Grade C (75/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 68 ms 32%
- TCP connect 20 ms 9%
- Server wait 123 ms 58%
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 211 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 6.98 MB over 26 request(s). Images files are 99% of it, so resize and recompress the largest images before anything else.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- 98% 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 688 ms, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.002), so nothing jumps under the reader's cursor.
- The main thread was blocked for 127 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.
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, 6.98 MB across all of them.
Top issues
Image delivery and format
high impact16 image(s) over 200 KB and 0 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.
Total page weight
high impactThe page transfers 6.98 MB across 26 request(s), with the document itself at 69.6 KB.
Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.
Third-party weight
medium impact1 third-party host(s) serve 6.83 MB 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://media.ffycdn.net/eu/elsevier/d/ee764e2b679a4af88c2655f1a21c2aca?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.35 s | 360.4 KB |
| https://media.ffycdn.net/eu/elsevier/d/GSHnwdr6r1BfqEgr?mod=v1/resize=8192/output=webp/quality=75 3rd party | images | 200 | 1.35 s | 187.9 KB |
| https://media.ffycdn.net/eu/elsevier/d/8gfyNw26zLQvnNZD?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.34 s | 460.7 KB |
| https://media.ffycdn.net/eu/elsevier/d/42aae9beef8c4c6a86d6ad553e57364d?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.32 s | 241.8 KB |
| https://media.ffycdn.net/eu/elsevier/d/b3775189238043cd898efad03c0d7094 3rd party | images | 200 | 1.32 s | 3.4 KB |
| https://media.ffycdn.net/eu/elsevier/d/X2VmQ5wubx3KfR8P?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.32 s | 286.7 KB |
| https://media.ffycdn.net/eu/elsevier/d/275905d73f76477a92b14fb582323263?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.31 s | 206.8 KB |
| https://media.ffycdn.net/eu/elsevier/d/76a8aa516bfb4b88ad033d781698096b?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.30 s | 183.3 KB |
| https://media.ffycdn.net/eu/elsevier/d/GSHnwdr6r1BfqEgr?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.30 s | 156.1 KB |
| https://media.ffycdn.net/eu/elsevier/d/xFQQw5GFWvkKUtsh?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.24 s | 404.4 KB |
| https://media.ffycdn.net/eu/elsevier/d/4d0a5fae07324f29811a99d8cf0cee53?mod=v1/resize=7360/output=webp/quality=75 3rd party | images | 200 | 1.24 s | 246.8 KB |
| https://media.ffycdn.net/eu/elsevier/d/d0d61cb2703f41ad8ac9a3c667ca84c2?mod=v1/resize=3872/output=webp/quality=75 3rd party | images | 200 | 1.23 s | 115.7 KB |
| https://media.ffycdn.net/eu/elsevier/d/4d0a5fae07324f29811a99d8cf0cee53?mod=v1/resize=4000/output=webp/quality=75 3rd party | images | 200 | 1.21 s | 202.0 KB |
| https://media.ffycdn.net/eu/elsevier/d/xFQQw5GFWvkKUtsh?mod=v1/resize=7250/output=webp/quality=75 3rd party | images | 200 | 1.19 s | 448.1 KB |
| https://media.ffycdn.net/eu/elsevier/d/T26RxuCYYM5MA2PN 3rd party | images | 200 | 968 ms | 687 B |
| https://www.elsevier.com/images/elsevier-logo-orange.svg | images | 200 | 965 ms | 39.1 KB |
| https://media.ffycdn.net/eu/elsevier/d/8gfyNw26zLQvnNZD?mod=v1/resize=6720/output=webp/quality=75 3rd party | images | 200 | 952 ms | 769.5 KB |
| https://media.ffycdn.net/eu/elsevier/d/275905d73f76477a92b14fb582323263?mod=v1/resize=9532/output=webp/quality=75 3rd party | images | 200 | 947 ms | 303.6 KB |
| https://media.ffycdn.net/eu/elsevier/d/40d929632b9c48ffa921e22d1342c37c 3rd party | images | 200 | 947 ms | 293 B |
| https://media.ffycdn.net/eu/elsevier/d/ee764e2b679a4af88c2655f1a21c2aca?mod=v1/resize=5112/output=webp/quality=75 3rd party | images | 200 | 941 ms | 401.8 KB |
| https://media.ffycdn.net/eu/elsevier/d/42aae9beef8c4c6a86d6ad553e57364d?mod=v1/resize=5472/output=webp/quality=75 3rd party | images | 200 | 941 ms | 385.4 KB |
| https://www.elsevier.com/images/home-v3/hero-mobile-poster.webp | images | 200 | 933 ms | 48.9 KB |
| https://media.ffycdn.net/eu/elsevier/d/X2VmQ5wubx3KfR8P?mod=v1/resize=4597/output=webp/quality=75 3rd party | images | 200 | 924 ms | 394.6 KB |
| https://media.ffycdn.net/eu/elsevier/d/76a8aa516bfb4b88ad033d781698096b?mod=v1/resize=8192/output=webp/quality=75 3rd party | images | 200 | 914 ms | 208.3 KB |
| https://media.ffycdn.net/eu/elsevier/d/275905d73f76477a92b14fb582323263?fm=webp&w=9532&q=75 3rd party | images | 200 | 909 ms | 1,021.4 KB |
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