Author
Simon JANVIER
EmDash, Cloudflare’s TypeScript CMS, up against WordPress
Cloudflare is pushing EmDash, an open-source CMS written in TypeScript and built on Astro, billed as the spiritual successor to…
SPF, DKIM and DMARC: the authentication baseline that decides whether your email arrives
Google, Yahoo and Microsoft now require full authentication. What SPF, DKIM and DMARC cover, the order to deploy them, and…
EU VAT Rules for French Freelance Web Developers: How to Invoice a Client Abroad
A French freelance developer invoicing a business client based elsewhere in the EU steps into a different regime, even under…
Hreflang: The Setup That Stops the Wrong Language Version Showing Up in Search
A broken hreflang setup can serve an English page to a French-speaking reader. This guide covers the two accepted methods,…
JavaScript Package Managers in 2026: npm, pnpm, Bun and Deno Compared
Picking a JavaScript package manager in 2026 is no longer a default choice of npm: pnpm has been rewritten in…
List-Unsubscribe: The Header That Protects Deliverability Under Gmail and Yahoo’s Rules
Since 2024, Gmail and Yahoo have required one-click unsubscribing from any sender pushing more than 5,000 messages a day to…
Sole Trader or Single-Member Company: Which Setup Fits a Freelance Web Developer
Between simple bookkeeping and tax optimisation, the legal structure chosen at the start shapes a freelance developer's profitability for years.…
301 redirects and site redesigns: keeping your SEO intact
A redesign that skips its redirect plan loses the SEO it has built up and breaks inbound links. This guide…
HTTP caching: getting Cache-Control, revalidation and URL versioning right
HTTP caching is the cheapest performance lever a site has, provided Cache-Control, ETag revalidation and URL versioning are set right.…
CORS explained: configuring cross-origin resource sharing without the guesswork
Cross-origin resource sharing stays a stubborn source of confusion in web development. Grasping what the browser protects and which headers…