Actualités, mises à jour et guides
Slack and X previews broken? It's almost always Open Graph tags: relative og:image URLs, missing dimensions, stale caches, or JS-rendered tags crawlers never see.
Lire la suiteBroken link previews kill clicks. Here's the Open Graph tag set that works, the image rules most sites get wrong, cache traps, and how to audit your pages in minutes.
Lire la suiteA tiny text file at the root of your domain decides how much of your site gets crawled. Get it wrong and Google either ignores your pages or wastes its crawl budget on admin URLs you forgot existed.
Lire la suiteA timestamp like 1727770000 is a date if you read it right and garbage if you don't. Write timestamps without the off-by-one-day bug, and read them back without doing mental math.
Lire la suiteA practical guide to minifying CSS and JavaScript before deploy: realistic compression numbers, source-map pitfalls, and the mistakes that break production builds.
Lire la suiteSyntax checks are not validation: five JSON mistakes that reach production, from float-based money math to BOMs, nested nulls and depth-limit DoS, plus the checklist that prevents most incidents.
Lire la suiteVAT added on top or included in the price, which rate applies, and why invoice totals sometimes differ by a cent. The arithmetic behind net, gross, and the rounding rules that cause the mismatch.
Lire la suiteYou updated the DNS record, half the internet sees it, and your own laptop refuses. How resolver caching, TTLs, and negative caching actually decide when your DNS change arrives.
Lire la suiteTrailing commas, silent duplicate keys, and numbers that lose precision break pipelines in ways syntax checks never catch. A field guide to the JSON validation gaps that cause real production incidents — and the checklist that closes them.
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