All articles

Screaming Frog SEO Spider is the go-to crawler for SEO consultants: it crawls a site like a search engine and surfaces broken links, redirects, and missing or duplicate tags. This guide presents the tool with a standard fact sheet and compares the free version, limited to 500 URLs, with the annual license, using the official…

The robots.txt file fits in a few lines, but a single mistake can shut an entire site off from Google. It tells crawlers what they can crawl, without ever guaranteeing that a page stays out of the index. Since answer engines arrived, it is also used to decide which AI crawlers can read your content,…

PageRank is the algorithm that set Google apart in its early days: it measures the importance of a page from the links it receives. Nearly thirty years later, the public score is gone, but Google still lists it among its core ranking systems. This guide explains its formula and the role of the damping factor,…

On-page SEO covers everything you optimize on the page itself: content, title tag, meta description, headings, URL, images, internal links and reading experience. It is the lever you fully control, without depending on partners or developers. This guide reviews the levers documented by Google, dismisses the common beliefs it explicitly rejects, and offers a method…

The meta description sums up your page in one or two sentences. Google can show it under the title of your results, but most of the time it builds the snippet from the content: a 2020 Ahrefs study found it rewrote the description in nearly two cases out of three. It does not affect rankings,…

SEO log file analysis is the only method that shows what Googlebot actually does on a site: pages crawled, frequency of visits, response codes received. It complements the crawl and Search Console, without replacing them. This article explains what a log file contains, when the analysis becomes useful, how to carry it out step by…

Keyword research tells you what your audience really types into Google, how many people do so and what content they expect. Done well, it does not produce an endless spreadsheet but a content plan: one intent, one page. This guide details the criteria for choosing a keyword, the limits of the volumes shown by tools,…

React, Vue, Angular: many sites build their pages in the browser. Google can run JavaScript, but with a delay, and most AI crawlers do not run it at all. This JavaScript SEO guide explains how Google processes a JS page in three phases, which flaws cost visibility, and how to choose between client-side, server-side and…

Internal linking connects the pages of the same site. For Google, these links are used to discover your content, to spot what matters most and to understand its topic. For readers, they map out the logical next step of their visit. Many rules circulate on the subject, often without a source: silo, cocoon, only the…

Heading tags, from H1 to H6, give a page its outline. Google says it does not penalise an imperfect order, but a clear structure helps it understand the content, serves as a fallback title in the results and shapes how people who use a screen reader navigate. This guide separates what Google really says from…