This site, measured
We ask you to check our sites on your own mobile phone rather than take our word. This page does the same for this site: every figure is dated, measured on the date shown, and re-checked at least monthly.
- Speed1.63 sMain content on a mobile phone. Our standard: under 2.0 s.
- Weight136.8 KiBHomepage, in 8 requests. As light as the page allows.
- SecurityA+Encryption and headers, 12 of 12 tests. Grade A or better.
- PrivacyNothing until you chooseSet on your device. Nothing that needs consent.
Measured on 11 November 2026, and re-checked at least monthly.
How to run the same check on your site
- Enter your address at pagespeed.web.dev and read the top section on the Mobile tab.
- Scan your address at developer.mozilla.org/en-US/observatory.
- Open your site in a private window and see whether a banner appears before you have done anything.
Five minutes, no login, no sales call. If the figures are not what you hoped, tell us the address. An engineer will reply within one working day.
In full: every measure, what it runs on, and the old addresses
Every measure
| Measure | This site | Standard | Method |
|---|---|---|---|
| Main content on screen, mobile phone | 1.63 s (range 1.61 to 1.77) | Under 2.0 s (ours); 2.5 s (Google) | Lab test, 11 November 2026 |
| Layout shift | 0.001 | 0.1 or under | Same lab test |
| Performance score, mobile phone | 100 | A check, not a target | Same lab test |
| Accessibility, automated | 100 | 100, plus the manual checks in the accessibility statement | Same lab test |
| Homepage weight | 136.8 KiB | As light as the page allows | Same lab test |
| Requests to load the homepage | 8 | Same lab test | |
| Encryption and headers | A+ (140, 12 of 12 tests passed) | Grade A or better | Mozilla HTTP Observatory, 11 November 2026 |
| Set on your device | Nothing, until you choose. The theme switch saves light or dark in the browser's storage. No cookies are set | Nothing that needs consent | Response headers and page source, 11 November 2026 |
| Collected | The contact message, if you send one. No analytics run | See the privacy notice | |
| Last checked | 11 November 2026 | At least monthly |
Lab test: Lighthouse 13.6.0, command line, headless Chrome, mobile profile (simulated Slow 4G, four-times CPU slowdown, emulated mid-range Android phone). Homepage, on the live address, datumdigital.co.uk, median of 5 runs on 11 November 2026.
What it runs on
Pages are written in Markdown, built in advance with Astro, and served as files from Netlify’s network. Content is edited in Decap CMS, with sign-in through GitHub and two-factor authentication. There is no application and no database on the public server. The code is in the firm’s own GitHub account.
The old addresses
Every address on the previous datumdigital.co.uk is kept or redirected. The full list, with the reason for each, is available on request.
Last reviewed 30 October 2026.