Performance & visibility

Web Development & SEO
in Briançon

A high-performance website is not enough if it is invisible on Google. At Altilink, development and search engine optimisation are inseparable: every line of code is built for speed and visibility.

Astro: the fastest framework on the market

We develop with Astro, a framework that generates pure static pages — zero client-side JavaScript by default. The result: load times under 1 second and a systematic Lighthouse score of 100/100.

Unlike WordPress or React sites that send megabytes of JavaScript to the browser, an Astro site delivers only the strict minimum: HTML, optimised CSS, and compressed images.

Advanced technical optimisation

  • AVIF + WebP images — Next-generation formats, 10x lighter than JPEG
  • Brotli compression — Every file pre-compressed at build time
  • PurgeCSS — Only the CSS actually used is delivered to the browser
  • Terser — Advanced JavaScript minification
  • Smart prefetch — Next pages are preloaded on hover
  • Immutable cache — Hashed assets with 1-year cache

SEO built in from the first line

Search engine optimisation is not a plugin added as an afterthought. It is structural:

  • Semantic HTML — <main>, <nav>, <article> tags, H1-H6 hierarchy
  • Schema.org JSON-LD — Structured data for Google rich snippets
  • Optimised meta tags — Title, description, Open Graph, Twitter Cards
  • XML Sitemap — Automatically generated with hreflang for multilingual
  • SEO images — Descriptive naming, alt text, modern formats
  • Core Web Vitals — LCP < 1.5s, CLS = 0, INP < 200ms

Local SEO: Briançon and Hautes-Alpes

For local businesses, local SEO is decisive. We optimise every website so your clients find you when they search for your services in the valley:

  • Schema LocalBusiness — Address, opening hours, service area indexed by Google
  • Geographic pages — Content targeted at Briançon, Serre Chevalier, Hautes-Alpes
  • Google Business Profile — NAP consistency (Name, Address, Phone)
  • Internal linking — Links between pages to distribute SEO authority

Native GDPR = SEO advantage

Our websites load no external resources: no Google Fonts, no CDN, no trackers. Fewer network requests = faster loading = better Google ranking. Respecting privacy is also a performance lever.

Concrete results

Our local clients benefit from optimal visibility on Google for their business queries:

Your high-performance website from €18/month

Fast development, built-in SEO, eco-friendly hosting included.

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