www.williamhill.com speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 15:33 UTC. Grade B (88/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 73 ms 22%
- TCP connect 55 ms 16%
- Server wait 210 ms 62%
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 338 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 657.9 KB over 26 request(s). Javascript files are 51% of it, so defer what is not needed for the first screen, and drop tags nobody uses.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- 86% of the weight comes from other hosts (analytics, fonts, embeds), which also means their slow day becomes your slow day.
Fix first: Compress text responses - Turn on brotli (preferred) or gzip for text/css, javascript and text/html in the web server. This is the cheapest win available on almost any site.
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. 26 request(s) in total, 657.9 KB across all of them.
Top issues
Compress text responses
high impact1 text response(s) of 10 KB or more are sent uncompressed, and the document itself is compressed. That is 69.2 KB of compressible text.
Fix: Turn on brotli (preferred) or gzip for text/css, javascript and text/html in the web server. This is the cheapest win available on almost any site.
Image delivery and format
medium impact0 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 impact5 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.
Third-party weight
medium impact3 third-party host(s) serve 566.8 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.
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://apps.static-cs.williamhill.com/whh/lodash.44c16a6ebc99083d44b1.js 3rd party | javascript | 200 | 1.98 s | 69.2 KB |
| https://apps.static-cs.williamhill.com/inter-splash/static/js/CookieBar.bc356bb2.chunk.js 3rd party | javascript | 200 | 1.74 s | 833 B |
| https://apps.static-cs.williamhill.com/core-common-dependencies/bundle.js 3rd party | javascript | 200 | 1.68 s | 41.1 KB |
| https://apps.static-cs.williamhill.com/whh/config_en-gb_desktop_splash.7be7ce5f69da01ed9d8264b578e5d6eb.js 3rd party | javascript | 200 | 1.63 s | 2.2 KB |
| https://apps.static-cs.williamhill.com/inter-splash/static/js/main.4522209c.js 3rd party | javascript | 200 | 1.27 s | 71.6 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt595f110c4570aafb/6254451c5e27875c1d661909/bgc.png 3rd party | images | 200 | 1.21 s | 102.4 KB |
| https://apps.static-cs.williamhill.com/inter-splash/static/js/TermsConditions.8bbf514e.chunk.js 3rd party | javascript | 200 | 1.21 s | 1.5 KB |
| https://apps.static-cs.williamhill.com/inter-splash/static/js/MoreVerticals.37d483af.chunk.js 3rd party | javascript | 200 | 1.20 s | 784 B |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/bltb9f8355d1c3e4dfe/63848eb4d8cae913d4ab9040/CMYK_White_(3)_2.svg 3rd party | images | 200 | 1.19 s | 3.8 KB |
| https://apps.static-cs.williamhill.com/inter-splash/static/js/Banner.49008b0f.chunk.js 3rd party | javascript | 200 | 1.19 s | 1.1 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt0449589f85f35f58/6254457b1fad8765a5e599d0/GC.svg 3rd party | images | 200 | 1.18 s | 21.5 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/bltd328e54316522549/67caccf95f63370aa8f86db5/gt.png.png 3rd party | images | 200 | 1.18 s | 25.9 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt526f39973f304129/625450edb4f5ca2cdc8cb550/googlePlay.svg 3rd party | images | 200 | 1.18 s | 2.6 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/bltcb19d68a2037cc61/67517b01354792a2dfe580c7/gambleaware.png 3rd party | images | 200 | 1.18 s | 5.2 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt84075afacf6dafd4/6254431ce186b6640a2eb261/gbga.png 3rd party | images | 200 | 1.18 s | 1.0 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/bltc255cedecfe399ec/625443e5f90cd22871548ecb/hm_government_of_gibraltar-3x.png 3rd party | images | 200 | 1.18 s | 13.2 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blta5a7fa2b5a6f5d44/625442baf454ac2a16205e9e/talk_ban_stop.png 3rd party | images | 200 | 1.17 s | 1.1 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt0e9b290e6423aa6e/625440d5f454ac2a16205e98/gamcare_horizontal.svg 3rd party | images | 200 | 1.17 s | 16.3 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt340b9e5fac224945/625450edafd32c2cd9410db2/appStore.svg 3rd party | images | 200 | 1.17 s | 3.5 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/bltc6505044cf2c81bd/63ee1304feb52e7508269f0b/MGA_WH_white.png 3rd party | images | 200 | 1.16 s | 8.9 KB |
| https://sports.whcdn.net/web-common-dependencies/com/bundle/main.ccaa7203c1c3b8770524.js 3rd party | javascript | 200 | 1.16 s | 144.6 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt954dfae4107d10a1/69524a13196bca4c955d835d/GS_ONLINE_STACKED_MONO.png 3rd party | images | 200 | 1.16 s | 19.8 KB |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt82d28914dfbb11da/62543c43b4f5ca2cdc8cb543/ga.png 3rd party | images | 200 | 1.16 s | 558 B |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt859ebfa5c0760ddb/6254370f1ef2515ab665a9aa/18_plus1.png 3rd party | images | 200 | 1.15 s | 535 B |
| https://eu-images.contentstack.com/v3/assets/blt07f4bf5152f418f6/blt1f1908336725762b/67fce870f8471d7f6637c14c/footer-logos2.svg 3rd party | images | 200 | 1.11 s | 7.5 KB |
Report this page
Run this test on your own site
The same engine, free, with the screenshots and the fixes. No account needed.