{"id":7269,"date":"2025-10-21T15:43:09","date_gmt":"2025-10-21T13:43:09","guid":{"rendered":"https:\/\/taismo.de\/unkategorisiert\/wdf-idf-analysis\/"},"modified":"2026-07-26T18:01:28","modified_gmt":"2026-07-26T16:01:28","slug":"wdf-idf-analysis","status":"publish","type":"post","link":"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/","title":{"rendered":"WDF*IDF analysis"},"content":{"rendered":"<style>\n.taismo-art{display:grid;grid-template-columns:320px minmax(0,1fr);gap:36px;align-items:start}\n.taismo-art .toc-sticky{position:sticky;top:80px}\n.taismo-art .toc-sticky ol li{margin-bottom:9px}\n.taismo-art .toc-sticky ol a:hover{color:var(--toc-hover) !important}\n.taismo-art .taismo-main h2{scroll-margin-top:90px;margin-top:38px}\n.taismo-art .lead-def{font-size:1.15em;line-height:1.6;background:#f7f2ec;border-left:4px solid #ED8924;padding:16px 20px;border-radius:8px}\n.taismo-art table{border-collapse:collapse;width:100%;margin:18px 0}\n.taismo-art th,.taismo-art 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<\/g> <\/svg><\/div>\n<h3 style=\"text-align:center;color:#fff;margin:0 0 14px;font-size:1.1em\">Contents<\/h3>\n<ol style=\"margin:0;padding-left:1.2em;line-height:1.5;font-weight:600;color:#fff;font-size:0.9em\">\n<li><a href=\"#how-a-wdf-idf-analysis-helps-your-seo\" style=\"color:#fff;text-decoration:none\">How does a WDF*IDF analysis help my SEO?<\/a><\/li>\n<li><a href=\"#how-to-run-a-wdf-idf-analysis\" style=\"color:#fff;text-decoration:none\">How do I run a WDF*IDF analysis?<\/a><\/li>\n<li><a href=\"#wdf-idf-tools\" style=\"color:#fff;text-decoration:none\">Which tools are there for WDF*IDF analysis?<\/a><\/li>\n<\/ol>\n<\/aside>\n<div class=\"taismo-main\">\n<h1 class=\"brand-claim\">What is a WDF*IDF analysis?<\/h1>\n<p class=\"lead-def\">A <strong>WDF*IDF analysis<\/strong> is an advanced method of <strong>text analysis<\/strong> used in <a href=\"https:\/\/taismo.de\/en\/what-is\/seo\/\">search engine optimization (SEO)<\/a>. WDF*IDF stands for <strong>Within Document Frequency<\/strong> times <strong>Inverse Document Frequency<\/strong>. The goal of the analysis is to make a text more relevant for particular <a href=\"https:\/\/taismo.de\/en\/what-is\/keyword\/\">search terms<\/a> by working out how much weight each keyword should carry.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/taismo.de\/wp-content\/uploads\/2026\/07\/wdf-idf-analyse.png\" width=\"1200\" height=\"675\" alt=\"WDF*IDF analysis explained: keyword frequency in a document weighed against a reference set of documents\" title=\"WDF*IDF analysis: keyword weighting against a reference set of documents\" loading=\"lazy\"><\/figure>\n<p>The method shows which words a text uses <strong>more or less often<\/strong> than an average document from a given collection, a website or a news feed for example. The formula helps you find the <strong>optimal frequency for your keywords<\/strong> so that search engines rate the page higher, without walking into the trap of <a href=\"https:\/\/taismo.de\/en\/what-is\/keyword-stuffing\/\">keyword stuffing<\/a>.<\/p>\n<h2 id=\"how-a-wdf-idf-analysis-helps-your-seo\">How does a WDF*IDF analysis help my SEO?<\/h2>\n<p>A WDF*IDF analysis is a <strong>powerful tool<\/strong> in SEO because it helps you shape content that search engines read as particularly relevant for a given keyword.<\/p>\n<p>By adjusting keyword weighting on the basis of the analysis, site owners can make sure their content stays <strong>natural and informative<\/strong> for search engines and for readers alike. That often leads to <strong>better placements in the search results<\/strong>, a higher click rate and, in the end, <strong>more traffic<\/strong>.<\/p>\n<p>The method also helps you find and close <strong>content gaps<\/strong>, meaning topics your own content does not yet cover well enough although they matter to your <a href=\"https:\/\/taismo.de\/en\/what-is\/target-audience\/\">target audience<\/a>. If you would rather have that work done for you, it is part of our <a href=\"https:\/\/taismo.de\/en\/seo-services\/\">SEO services<\/a>.<\/p>\n<h2 id=\"how-to-run-a-wdf-idf-analysis\">How do I run a WDF*IDF analysis?<\/h2>\n<p>To run a WDF*IDF analysis you first need a set of documents to serve as your reference, usually the <strong>top results<\/strong> a search engine returns for the keyword in question. You then look at <strong>how often each word<\/strong> appears in the <strong>document you want to improve<\/strong> (WDF) and how often those words appear on average across the <strong>reference set<\/strong> (IDF).<\/p>\n<p>Dedicated SEO tools such as Ryte or Sistrix can <strong>automate<\/strong> that work and give you a simple interface for reading the data. The result is a list of words that should either be emphasized more or used less, so that the text gains in relevance and stays readable.<\/p>\n<h2 id=\"wdf-idf-tools\">Which tools are there for WDF*IDF analysis?<\/h2>\n<h3 id=\"free-wdf-idf-tools\">Free tools for WDF*IDF analysis<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/www.wdfidf-tool.com\/\" rel=\"nofollow\">WDFIDF-Tool<\/a>:<\/strong> a version limited to three free queries per day.<\/li>\n<li><strong><a href=\"https:\/\/www.keywordtooldominator.com\/word-frequency-counter\" rel=\"nofollow\">Keyword Tool Dominator<\/a>:<\/strong> has a limited free version for simple keyword frequency counts.<\/li>\n<li><strong><a href=\"https:\/\/www.seolyze.de\/\" rel=\"nofollow\">SEOlyze<\/a> (30 days free):<\/strong> offers a basic WDF*IDF analysis as part of its services.<\/li>\n<li><a href=\"https:\/\/www.link-assistant.com\/de\/download-success.html\" rel=\"nofollow\">SEO PowerSuite<\/a>: offers a free version with a reduced feature set.<\/li>\n<\/ul>\n<h3 id=\"paid-wdf-idf-tools\">Paid tools for WDF*IDF analysis<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/de.ryte.com\/\" rel=\"nofollow\">Ryte<\/a>:<\/strong> offers an extensive WDF*IDF toolbox that gives you a deep look at content optimization. Ryte is known for its detailed reports and its professional SEO features.<\/li>\n<li><strong><a href=\"https:\/\/www.sistrix.de\/\" rel=\"nofollow\">Sistrix<\/a>:<\/strong> a widely used SEO tool that offers detailed WDF*IDF analysis and stands out for its reporting.<\/li>\n<li><strong><a href=\"https:\/\/de.semrush.com\/\" rel=\"nofollow\">SEMrush<\/a>:<\/strong> alongside its other SEO tools it also has a WDF*IDF feature. SEMrush is known for a broad range of tools and reports that suit large SEO campaigns.<\/li>\n<li><strong><a href=\"https:\/\/surferseo.com\/\" rel=\"nofollow\">Surfer SEO<\/a>:<\/strong> uses WDF*IDF analysis to improve web content and offers friendly features aimed at content marketing and SEO.<\/li>\n<li><strong><a href=\"https:\/\/www.xovi.de\/\" rel=\"nofollow\">Xovi<\/a>:<\/strong> another all-in-one SEO tool with a WDF*IDF feature. It is particularly useful for detailed keyword work and for tuning online marketing strategies.<\/li>\n<\/ul>\n<p>More terms around content and rankings are collected in our <a href=\"https:\/\/taismo.de\/en\/what-is\/\">SEO glossary<\/a>.\n  <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>IKI Contents How does a WDF*IDF analysis help my SEO? How do I run a WDF*IDF analysis? Which tools are there for WDF*IDF analysis? What is a WDF*IDF analysis? A WDF*IDF analysis is an advanced method of text analysis used in search engine optimization (SEO). WDF*IDF stands for Within Document Frequency times Inverse Document Frequency. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":6533,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_taismo_jsonld":"","taismo_jsonld":"{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/#webpage\",\"url\":\"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/\",\"name\":\"What is a WDF*IDF analysis?\",\"isPartOf\":{\"@id\":\"https:\/\/taismo.de\/#website\"},\"inLanguage\":\"en\",\"datePublished\":\"2025-10-21T15:43:09+02:00\",\"dateModified\":\"2026-07-14T12:00:00+02:00\",\"primaryImageOfPage\":{\"@id\":\"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/#primaryimage\"},\"mainEntity\":{\"@id\":\"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/#definedterm\"},\"breadcrumb\":{\"@id\":\"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/#breadcrumb\"},\"speakable\":{\"@type\":\"SpeakableSpecification\",\"cssSelector\":[\".brand-claim\",\".lead-def\"]},\"author\":{\"@id\":\"https:\/\/taismo.de\/#person-dominik-breitbach\"},\"publisher\":{\"@id\":\"https:\/\/taismo.de\/#organization\"}},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/#primaryimage\",\"contentUrl\":\"https:\/\/taismo.de\/wp-content\/uploads\/2026\/07\/wdf-idf-analyse.png\",\"url\":\"https:\/\/taismo.de\/wp-content\/uploads\/2026\/07\/wdf-idf-analyse.png\",\"width\":1200,\"height\":675,\"caption\":\"WDF*IDF analysis: keyword frequency in a document weighed against a reference set of documents\"},{\"@type\":\"DefinedTerm\",\"@id\":\"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/#definedterm\",\"name\":\"WDF*IDF analysis\",\"termCode\":\"wdf-idf-analysis\",\"url\":\"https:\/\/taismo.de\/en\/what-is\/wdf-idf-analysis\/\",\"inLanguage\":\"en\",\"inDefinedTermSet\":{\"@id\":\"https:\/\/taismo.de\/#seo-wiki\"},\"description\":\"A WDF*IDF analysis is an advanced method of text analysis used in search engine optimization. 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