www.gamblingcommission.gov.uk speed test — 20 Oct 2026

Measured from the wfix.shop server on 20 October 2026 at 16:16 UTC. Grade C (73/100), with the screenshots, the timings and the fixes that matter.

https://www.gamblingcommission.gov.uk/

20 October 2026 at 16:16 UTC · Free test · report pt_b970219bed78
Grade
C
73/100
Performance81/100
Structure62/100

9 audit(s) passed, 7 need work

First byte (TTFB)692 msmeasured from this server
Fully loaded1.94 sfirst byte + slowest asset
Requests26document + assets
Page weight1.33 MBcompressed transfer
HTML document13.6 KBgzip
ProtocolHTTP/2server not sent
Third-party648.6 KBother hosts

Where the first byte went

  • DNS lookup 70 ms 10%
  • TCP connect 145 ms 21%
  • Server wait 476 ms 69%

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

First byteslower than 69% of 4,999 pages tested here692 ms against a median of 448 ms
Page weightheavier than 71% of 4,999 pages tested here1.33 MB against a median of 650.3 KB
Fully loadedslower than 55% of 4,999 pages tested here1.94 s against a median of 1.84 s
Requestssends more requests than 100% of 4,999 pages tested here26 against a median of 26

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 took 692 ms. Everything else waits for that number, so the server is where to start: caching, a slow query, or an overloaded host.
  • The page transfers 1.33 MB over 26 request(s). Images files are 57% of it, so resize and recompress the largest images before anything else.
  • The HTML itself arrives gzip-compressed.
  • It runs over HTTP/2, so the assets share a connection instead of opening one each.
  • 48% of the weight comes from other hosts (analytics, fonts, embeds), which also means their slow day becomes your slow day.
  • The largest element painted at 1.41 s, inside the 2.5 s Google calls good.
  • Layout shift is 0.370 (good is under 0.1): something without a reserved size is loading late - an image, an ad, or a font swap.

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.

Screenshot

What the page looks like

Loaded in headless Chromium on this server. Click an image to open it full size.

Mobile screenshot of www.gamblingcommission.gov.uk
Mobile 390 × 844 · 62.3 KB · page is 6000 px tall

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.

Largest contentful paint1.41 sgood is under 2.5 s
Cumulative layout shift0.370under 0.1 is stable
Total blocking timenone over 50 mslong tasks during load
First contentful paint1.41 sfirst content on screen
Browser page weight893.1 KB24 request(s), scripts included
Largest contentful paint1.41 s
Goodgood under 2.5 s, poor over 4 s
Cumulative layout shift0.370
Poorgood under 0.1, poor over 0.25
Total blocking timenone over 50 ms
Goodgood under 200 ms, poor over 600 ms

Page weight by type

What the page is made of

Images 14 requests
771.2 KB 57%
Css 2 requests
400.4 KB 29%
Javascript 8 requests
178.7 KB 13%
Html 1 request
92 B 0%

Transfer size, compressed as sent. 26 request(s) in total, 1.33 MB across all of them.

Top issues

Server response time (TTFB)

high impact

The first byte arrived after 692 ms. Of that, 476 ms was the server thinking and 215 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.

Compress text responses

high impact

5 text response(s) of 10 KB or more are sent uncompressed, and the document itself is not compressed. That is 535.3 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

high impact

1 image(s) over 200 KB and 4 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 impact

6 render-blocking resource(s) in the document head (1 script(s), 5 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 impact

The page transfers 1.33 MB across 26 request(s), with the document itself at 13.6 KB.

Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.

Waterfall

Slowest requests

IMAGESwww.gamblingcommission.gov.uk/public/images/icons/apple-icon-144x144…
1.25 s
IMAGESwww.gamblingcommission.gov.uk/public/images/icons/apple-icon-114x114…
1.16 s
IMAGESwww.gamblingcommission.gov.uk/public/images/icons/apple-icon-120x120…
1.16 s
IMAGESwww.gamblingcommission.gov.uk/public/images/icons/apple-icon-76x76.png
1.13 s
CSSwww.gamblingcommission.gov.uk/public/stylesheets/application.css
1.10 s
JAVASCRIPTwww.gamblingcommission.gov.uk/public/javascripts/all.js
1.10 s
IMAGESwww.gamblingcommission.gov.uk/public/images/icons/apple-icon-60x60.png
1.10 s
JAVASCRIPTwww.gamblingcommission.gov.uk/public/javascripts/inline.js
1.09 s
JAVASCRIPTwww.gamblingcommission.gov.uk/public/javascripts/grecaptchax.js
1.08 s
IMAGESwww.gamblingcommission.gov.uk/public/images/icons/logo-grey.png
1.08 s

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

RequestTypeStatusTimeSize
https://www.gamblingcommission.gov.uk/public/images/icons/apple-icon-144x144.pngimages2001.25 s6.2 KB
https://www.gamblingcommission.gov.uk/public/images/icons/apple-icon-114x114.pngimages2001.16 s4.9 KB
https://www.gamblingcommission.gov.uk/public/images/icons/apple-icon-120x120.pngimages2001.16 s5.1 KB
https://www.gamblingcommission.gov.uk/public/images/icons/apple-icon-76x76.pngimages2001.13 s3.4 KB
https://www.gamblingcommission.gov.uk/public/stylesheets/application.csscss2001.10 s190.0 KB
https://www.gamblingcommission.gov.uk/public/javascripts/all.jsjavascript2001.10 s7.5 KB
https://www.gamblingcommission.gov.uk/public/images/icons/apple-icon-60x60.pngimages2001.10 s2.1 KB
https://www.gamblingcommission.gov.uk/public/javascripts/inline.jsjavascript2001.09 s14.2 KB
https://www.gamblingcommission.gov.uk/public/javascripts/grecaptchax.jsjavascript2001.08 s2.0 KB
https://www.gamblingcommission.gov.uk/public/images/icons/logo-grey.pngimages2001.08 s126.2 KB
https://www.gamblingcommission.gov.uk/public/javascripts/gov.jsjavascript2001.07 s82.8 KB
https://www.gamblingcommission.gov.uk/public/images/icons/apple-icon-57x57.pngimages2001.07 s2.0 KB
https://www.gamblingcommission.gov.uk/public/images/icons/apple-icon-72x72.pngimages2001.07 s3.1 KB
https://www.gamblingcommission.gov.uk/public/stylesheets/cdnapplication.csscss2001.07 s210.5 KB
https://www.gamblingcommission.gov.uk/public/javascripts/timeline.jsjavascript2001.06 s3.5 KB
https://www.gamblingcommission.gov.uk/public/search/js/search.min.jsjavascript2001.05 s37.9 KB
https://www.gamblingcommission.gov.uk/public/javascripts/active-nav.jsjavascript2001.05 s771 B
https://images.ctfassets.net/j16ev64qyf6l/2T4vdexwuKX09KL8M6iTGU/4c0ae70acea170e2898f6c9ca778c957/fete2.jpeg?h=400 3rd partyimages200966 ms111.5 KB
https://images.ctfassets.net/j16ev64qyf6l/2jMEUcwohaEYZeydMsXPx1/41af0a6e548140926d1f93cf014a3cb0/safe.jpg?h=400 3rd partyimages200965 ms31.1 KB
https://images.ctfassets.net/j16ev64qyf6l/5GTaAzXJgGYUjkTg12XJ3P/674c17ad0c2b49169a90d1f765760860/reels.jpg?h=400 3rd partyimages200949 ms46.3 KB
https://images.ctfassets.net/j16ev64qyf6l/rJT8wqal9lQHqNHpVBygX/d5adec1f0ec4d16343dafa4d24cb4c30/Untitled_-_20_October_2026_at_08.48.55__2_.png 3rd partyimages200941 ms188.2 KB
https://images.ctfassets.net/j16ev64qyf6l/2ntAXPE2PlYnt3FGJpuVtf/ba119b1b32ddb454e30eb20132ef62a2/Gambling_Commission_logo.png?w=220 3rd partyimages200922 ms7.6 KB
https://code.jquery.com/jquery-3.6.0.min.js 3rd partyjavascript200914 ms30.2 KB
https://www.googletagmanager.com/ns.html?id=GTM-MXRZ3GN 3rd partyhtml200914 ms92 B
https://images.ctfassets.net/j16ev64qyf6l/5fztkEu1GiPd9CQfxyVCBu/266908a73b3f3ae8a7a2057edb9581c8/Blog_post_-_Game_Machine_Consultation_update_Sept_26.jpg 3rd partyimages200901 ms233.7 KB
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