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Guides, methods and tests, newest first.
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301 redirect: the complete SEO guide
A URL changes, a site migrates, two pages merge: the 301 redirect is the tool that avoids losing visitors and the history built up in Google. Set up badly, it creates chains, loops or redirects to the home page that cost traffic. This guide explains what a 301 redirect really does according to Google’s documentation,…
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Smart Bidding: choosing your Google Ads bid strategy
Smart Bidding hands the calculation of each bid over to Google’s AI. Target CPA, Target ROAS, Maximize conversions or their value: the strategy sets the goal. The algorithm then adjusts the bid search by search, based on many signals. You still have to give it reliable data. This guide explains the four strategies and which…
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Google Ads Quality Score explained
Quality Score, the Google Ads quality rating, is often read as a direct lever on cost per click. Google presents it differently: a diagnostic tool, calculated per keyword in Search campaigns. It does not enter the auction as such. This guide explains how the score is calculated, what moves it and what does not count.…
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Performance Max: how it works and how to manage it
Performance Max is the most automated Google Ads campaign. You provide a goal, creative assets and audience signals. Google then serves on the Search Network, YouTube, Display, Discover, Gmail and Maps. Long criticized for its opacity, it has opened up since 2025: search terms report, channel report, negative keywords. This guide explains how it works…
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llms.txt: useful for GEO or not?
The llms.txt file promises to help ChatGPT, Gemini or Claude understand your site. Proposed in 2024, it is now generated by several tools and platforms, and some present it as a visibility lever. The data published in 2025 and 2026 tells a different story: Google does not support it, and AI engine crawlers almost never…
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Google AI Mode: how it works and what it means for SEO
Google AI Mode (Mode IA in French) is the conversational tab of Google Search, available in France since July 22, 2026. You ask long questions, chain follow-ups, and the system answers by citing web pages. Behind it is a technique described by Google: query fan-out, which splits each question into several searches. This article explains…
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ChatGPT SEO: how to get cited
Appearing in ChatGPT’s answers does not depend on a single trick. ChatGPT draws on its model’s knowledge and, when the question calls for it, on a web search run by its crawler OAI-SearchBot. ChatGPT SEO therefore plays on two fronts: the brand’s reputation and technical access to clear, sourced pages. This article relies on OpenAI’s…
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AI SEO: what AI changes for search optimization
AI SEO mixes two topics: artificial intelligence as an SEO tool, and optimization for answer engines such as AI Overviews or ChatGPT. Since July 22, 2026, Google’s AI summaries have also been shown in France, and click-through rates are falling on the queries concerned. This guide separates the two meanings and shows what the 2025…
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AI Overviews: what changes for SEO
Since July 22, 2026, Google has been showing AI Overviews (Aperçus IA) in France: AI-generated answers at the top of the results, with links to their sources. For a website, three questions arise. How does Google choose the pages it cites? How many clicks do you lose, and how many do you keep when you…
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UGC (user generated content): definition and uses
UGC (user generated content) refers to the reviews, photos, videos and posts published by internet users rather than by a brand. This guide starts from the OECD definition and separates spontaneous UGC from videos commissioned from UGC creators. It details a seven-step strategy, from asking for content to measuring it, then the rules in France:…