www.linuxfoundation.org speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 15:40 UTC. Grade B (87/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 99 ms 34%
- TCP connect 36 ms 13%
- Server wait 152 ms 53%
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 288 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 1.41 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 br-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- The largest element painted at 828 ms, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.019), so nothing jumps under the reader's cursor.
- The main thread was blocked for 337 ms, 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, 1.41 MB across all of them.
Top issues
Image delivery and format
high impact2 image(s) over 200 KB and 2 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 impact17 render-blocking resource(s) in the document head (2 script(s), 15 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.
Total page weight
medium impactThe page transfers 1.41 MB across 26 request(s), with the document itself at 20.5 KB.
Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.
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://www.linuxfoundation.org/hs-fs/hubfs/DSC_8053.jpg?width=2000&name=DSC_8053.jpg | images | 200 | 1.10 s | 626.7 KB |
| https://www.linuxfoundation.org/hs-fs/hubfs/46304026842_d93be3ca4e_o%201.png?width=256&height=256&name=46304026842_d93be3ca4e_o%201.png | images | 200 | 1.05 s | 91.2 KB |
| https://www.linuxfoundation.org/hs-fs/hubfs/DSC_8053.jpg?width=1000&name=DSC_8053.jpg | images | 200 | 1.03 s | 534.2 KB |
| https://www.linuxfoundation.org/hubfs/open19.svg | images | 200 | 1.03 s | 1.8 KB |
| https://www.linuxfoundation.org/hubfs/Tux-flat-version.png | images | 200 | 1.01 s | 6.5 KB |
| https://www.linuxfoundation.org/hubfs/cncf-color-3.png | images | 200 | 1.01 s | 2.4 KB |
| https://www.linuxfoundation.org/hs-fs/hubfs/46304026842_d93be3ca4e_o%201.png?width=128&height=128&name=46304026842_d93be3ca4e_o%201.png | images | 200 | 1.01 s | 24.3 KB |
| https://www.linuxfoundation.org/hubfs/lfnetworking-stacked-color%20(1).png | images | 200 | 1.00 s | 22.0 KB |
| https://www.linuxfoundation.org/hubfs/decentralized-identity-foundation-dif.svg | images | 200 | 1.00 s | 6.5 KB |
| https://www.linuxfoundation.org/hubfs/C2PA.svg | images | 200 | 999 ms | 3.7 KB |
| https://www.linuxfoundation.org/hubfs/clusterduck.svg | images | 200 | 996 ms | 3.4 KB |
| https://www.linuxfoundation.org/hubfs/jdf3mf.svg | images | 200 | 995 ms | 1.6 KB |
| https://www.linuxfoundation.org/hubfs/openpowerfoundation.svg | images | 200 | 990 ms | 1.8 KB |
| https://www.linuxfoundation.org/hubfs/riscvlogo.png | images | 200 | 987 ms | 7.4 KB |
| https://www.linuxfoundation.org/hubfs/pixhawk.jpg | images | 200 | 987 ms | 4.8 KB |
| https://www.linuxfoundation.org/hubfs/os-c.svg | images | 200 | 984 ms | 27.8 KB |
| https://www.linuxfoundation.org/hubfs/margo_black.svg | images | 200 | 983 ms | 2.3 KB |
| https://www.linuxfoundation.org/hubfs/LF%20Logo%20White.svg | images | 200 | 982 ms | 1.3 KB |
| https://www.linuxfoundation.org/hubfs/marquez.svg | images | 200 | 979 ms | 1.6 KB |
| https://www.linuxfoundation.org/hubfs/finos-horizontal-color%201.png | images | 200 | 976 ms | 1.2 KB |
| https://www.linuxfoundation.org/hubfs/openssf-horizontal-color.png | images | 200 | 975 ms | 37.7 KB |
| https://www.linuxfoundation.org/hubfs/spdx-color.svg | images | 200 | 971 ms | 3.2 KB |
| https://www.linuxfoundation.org/hubfs/chipsalliance-color.svg | images | 200 | 965 ms | 4.0 KB |
| https://www.linuxfoundation.org/hubfs/aomedia_color.svg | images | 200 | 958 ms | 1.4 KB |
| https://www.linuxfoundation.org/hubfs/OpenJS%20Logo.png | images | 200 | 957 ms | 7.7 KB |
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