www.itv.com speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 13:18 UTC. Grade B (88/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 77 ms 18%
- TCP connect 35 ms 8%
- Server wait 316 ms 74%
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 428 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 752.8 KB over 20 request(s). Javascript files are 80% of it, so defer what is not needed for the first screen, and drop tags nobody uses.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
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.
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. 20 request(s) in total, 752.8 KB across all of them.
Top issues
Server response time (TTFB)
high impactThe first byte arrived after 428 ms. Of that, 316 ms was the server thinking and 112 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.
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.
Cache static assets
medium impact1 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.
JavaScript weight
medium impact1 JavaScript file(s) over 200 KB: _app-484397560e9b99f9.js (373.2 KB)
Fix: Split routes, remove unused dependencies, and prefer a two-file build (one pinned library, one application bundle) over many small ones.
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://cscript-cdn-irl.cassiecloud.com/loader.js 3rd party | javascript | 200 | 1.08 s | 33.1 KB |
| https://www.itv.com/hades-assets/_next/static/chunks/main-a8f095fedecb2034.js | javascript | 200 | 791 ms | 51.1 KB |
| https://www.itv.com/hades-assets/_next/static/chunks/framework-c0c0e1ed5df8dcec.js | javascript | 200 | 764 ms | 67.0 KB |
| https://www.itv.com/hades-assets/_next/static/css/31a5e87eb9e205ae.css | css | 200 | 756 ms | 1021 B |
| https://www.googletagmanager.com/ns.html?id=GTM-MXQXBVC 3rd party | html | 200 | 755 ms | 92 B |
| https://www.itv.com/hades-assets/_next/static/chunks/pages/_app-484397560e9b99f9.js | javascript | 200 | 746 ms | 373.2 KB |
| https://www.itv.com/hades-assets/_next/static/css/722e7986caefbba0.css | css | 200 | 744 ms | 53.9 KB |
| https://www.itv.com/hades-assets/_next/static/chunks/6469-c491cf288871e55b.js | javascript | 200 | 728 ms | 18.7 KB |
| https://www.itv.com/hades-assets/_next/static/chunks/webpack-9411f2902372bdca.js | javascript | 200 | 728 ms | 2.1 KB |
| https://www.itv.com/hades-assets/_next/static/chunks/polyfills-42372ed130431b0a.js | javascript | 200 | 725 ms | 38.7 KB |
| https://www.itv.com/hades-assets/_next/static/8TWZ5iMesmkD4-mO091KC/_buildManifest.js | javascript | 200 | 716 ms | 1.7 KB |
| https://www.itv.com/hades-assets/_next/static/8TWZ5iMesmkD4-mO091KC/_ssgManifest.js | javascript | 200 | 714 ms | 61 B |
| https://www.itv.com/Kg0bCDROQuAYrjzYYm7W/Yw2QfVSmNzX8VkY1/RUpYAQ/fHRKP/0l2JCQ | html | 403 | 708 ms | 436 B |
| https://www.itv.com/hades-assets/_next/static/chunks/1244-28350cd568b410d0.js | javascript | 200 | 706 ms | 9.7 KB |
| https://www.itv.com/hades-assets/_next/static/chunks/pages/index-9109bfab6fd93dff.js | javascript | 200 | 696 ms | 10.0 KB |
| https://assets.fe.itv.com/images/brands/itvx/itvx-favicon-blue-144x144px.png 3rd party | images | 200 | 675 ms | 2.8 KB |
| https://app.10ft.itv.com/itvstatic/assets/cookies-prompt/cassie-init-v2.js 3rd party | javascript | 301 | 665 ms | 0 B |
| https://assets.fe.itv.com/images/brands/itvx/apple-touch-icon.png 3rd party | images | 200 | 661 ms | 2.8 KB |
| https://app.10ft.itv.com/itvstatic/assets/cookies-prompt/cassie-v2.css 3rd party | css | 301 | 651 ms | 0 B |
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