Custom websites, apps and tools. Built by one person who shows the receipts.
I design and build websites, web apps and internal tools, and I do the whole job myself: planning, design, code and launch. Every build ships with its measurements printed on the page, and the strip below reports this one.
The proof
This site ran on Webflow until July 2026. I rebuilt it on Astro and measured both builds the same way. The comparison below is the short version; the full account is in the case study.
| on webflow | rebuilt on astro | |
|---|---|---|
| js payload | 237kb | 0.9kb inline |
| third-party origins | 8 | 0 |
| cookies before consent | yes | none |
| hosting | £20/mo | £0/mo |
Both builds score 99 or 100 on Lighthouse performance; the differences worth measuring are the payload, the origins, the cookies and the cost.
What I build
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Custom websites
Marketing and content sites, designed and coded from scratch, measured before they ship.
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Apps and internal tools
Small web applications that replace the spreadsheet, the shared inbox or the manual job nobody enjoys.
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Authority platforms
A publishing system for specialists who want their expertise found, read and cited, by people and by AI search.
I also take on Webflow builds and redesigns. When it is the right platform for the job, I say so.
Selected work
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HP Evolution
A single-page site expanded into a CMS-driven site the client updates themselves.
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GO Travel Solutions
A Joomla site migrated to Webflow and redesigned from the ground up for a sustainable transport consultancy.
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APMP UK
Rethink, restructure and redesign for the UK chapter of a professional association.
Writing
Building URL Valet with Ship Studio
A link-cleaning web app and Chrome extension, taken from written brief to deployed product in a day.
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Hue shall not pass
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The new rules of digital discoverability: how to win in the age of AI search
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Visual editors vs vibe coding: the true cost of web autonomy
The person
I'm Mark Thurman. I've been building for the web since 1999 and now work directly with clients from Essex. Every project with my name on it is planned, designed and coded by me.
Being one person puts a hard limit on how many projects I take on. The about page says exactly what that limit is, scored the same way I score my builds.
Contact
Tell me what you're trying to build or fix. Replies come from me.
I take on four projects a quarter, because I am one person. If the current quarter is full, I will say so straight away.
Prefer email? mark@getkoodos.com