www.wireshark.org speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 13:33 UTC. Grade C (74/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 56 ms 13%
- TCP connect 25 ms 6%
- Server wait 364 ms 82%
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 445 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 3.00 MB over 17 request(s). Images files are 92% 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 1.06 s, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.006), so nothing jumps under the reader's cursor.
- The main thread was blocked for 5 ms in total, which is not enough to feel.
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.
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. 17 request(s) in total, 3.00 MB across all of them.
Top issues
Server response time (TTFB)
high impactThe first byte arrived after 445 ms. Of that, 364 ms was the server thinking and 81 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.
Image delivery and format
high impact2 image(s) over 200 KB and 3 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 impact3 render-blocking resource(s) in the document head (0 script(s), 3 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
high impactThe page transfers 3.00 MB across 17 request(s), with the document itself at 42.3 KB.
Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.
Third-party weight
medium impact5 third-party host(s) serve 385.5 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.
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.wireshark.org/assets/banners/wcatrainingbanner.png | images | 200 | 1.08 s | 199.9 KB |
| https://www.wireshark.org/_astro/endace.BHKk8StM_Z26cTv1.webp | images | 200 | 917 ms | 10.1 KB |
| https://www.wireshark.org/_astro/recall_ai.BBQukeJA_2hf7X.webp | images | 200 | 913 ms | 2.3 KB |
| https://www.wireshark.org/_astro/fmadio.BThAw1rz_Z1fceFL.webp | images | 200 | 908 ms | 10.3 KB |
| https://use.typekit.net/nvp0lhj.css 3rd party | css | 200 | 892 ms | 1.1 KB |
| https://www.wireshark.org/_astro/WCAFrontpage.CpLJgg4K_fh7bF.png | images | 200 | 887 ms | 2.16 MB |
| https://www.googletagmanager.com/gtag/js?id=G-YLHRKD6LH6 3rd party | javascript | 200 | 739 ms | 177.4 KB |
| https://static.cloudflareinsights.com/beacon.min.js 3rd party | javascript | 200 | 720 ms | 10.0 KB |
| https://cdn.jsdelivr.net/npm/wf-components/public/styles.css 3rd party | css | 200 | 712 ms | 7.3 KB |
| https://www.wireshark.org/_astro/wca.C_vSXqTJ_Z2pt6cI.webp | images | 200 | 679 ms | 78.9 KB |
| https://i.ytimg.com/vi/p0aAt3iB398/maxresdefault.jpg 3rd party | images | 200 | 672 ms | 145.5 KB |
| https://www.wireshark.org/_astro/profitap.6E4vc7ps_1tN69a.webp | images | 200 | 660 ms | 8.3 KB |
| https://i.ytimg.com/vi_webp/XQvb7bzshcE/maxresdefault.webp 3rd party | images | 200 | 656 ms | 44.1 KB |
| https://www.wireshark.org/img/hero-background.webp | images | 200 | 655 ms | 110.7 KB |
| https://www.wireshark.org/_astro/bibliography.tsm2vgcx.css | css | 200 | 655 ms | 15.2 KB |
| https://www.wireshark.org/favicon.ico | images | 200 | 655 ms | 3.1 KB |
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