www.ietf.org speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 12:24 UTC. Grade A (91/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 60 ms 26%
- TCP connect 32 ms 14%
- Server wait 143 ms 61%
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 235 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 727.4 KB over 13 request(s), which is lean. Images files are 81% 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.
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.
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. 13 request(s) in total, 727.4 KB across all of them.
Top issues
Image delivery and format
high impact1 image(s) over 200 KB and 1 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.
Cache static assets
medium impact3 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.
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.
Mobile viewport
medium impactNo viewport meta tag, so a phone renders the desktop layout scaled down.
Fix: Add a viewport meta tag with width=device-width and an initial scale of 1.
Strict-Transport-Security
low impactHSTS is not set, so the first visit on a hostile network can still be downgraded to HTTP.
Fix: Send Strict-Transport-Security with a max-age of at least six months. Add includeSubDomains once every subdomain is HTTPS.
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://analytics.ietf.org/matomo.php?idsite=1 3rd party | images | 200 | 819 ms | 43 B |
| https://static.ietf.org/fonts/inter/import.css 3rd party | css | 200 | 697 ms | 625 B |
| https://static.ietf.org/logos/ietf.svg 3rd party | images | 200 | 686 ms | 1.7 KB |
| https://www.ietf.org/media/images/111-SanFrancisco.height-245.jpg | images | 200 | 497 ms | 14.0 KB |
| https://www.ietf.org/media/images/IMG_15.width-600.jpg | images | 200 | 495 ms | 40.6 KB |
| https://www.ietf.org/media/images/111-SanFrancisco.max-4000x4000.jpg | images | 200 | 466 ms | 398.2 KB |
| https://www.ietf.org/static/dist/main.6fff6370f135.css | css | 200 | 466 ms | 51.1 KB |
| https://www.ietf.org/media/images/_MG_4832.width-600.jpg | images | 200 | 466 ms | 47.9 KB |
| https://www.ietf.org/media/images/ietf128-kuala-lumpur.height-245.jpg | images | 200 | 466 ms | 33.2 KB |
| https://www.ietf.org/media/images/things.width-600.jpg | images | 200 | 466 ms | 29.7 KB |
| https://www.ietf.org/media/images/ietf-logo.width-600.jpg | images | 200 | 466 ms | 24.5 KB |
| https://www.ietf.org/static/dist/main.fbd56cfccb3b.js | javascript | 200 | 408 ms | 77.3 KB |
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