Description

The WDF*IDF SEO Calculator analyzes the content of a page and calculates the weighted frequency of relevant terms in comparison to the texts better positioned on Google for the target keyword. The tool indicates which words and phrases need to gain weight in your article to align the vocabulary with what search engines consider authoritative on the topic, transforming assumptions into data-driven editorial decisions.

Main Features of the WDF*IDF SEO Calculator

  • Automatic WDF*IDF Calculation
    Measures the weighted density of each term by comparing the text to well-ranked competitors.
  • Target Keyword Analysis
    Allows entering the main keyword and generating a report of recommended related terms.
  • Comparison with Top Results
    Crosses the submitted content with the pages that appear on the first positions of Google for the query.
  • Suggestions for Missing Terms
    Lists words and phrases that appear in competitors but are absent or underutilized in your text.
  • Integrated WordPress Panel
    Provides the calculator within the admin, accessible during post and page editing.

Benefits of the WDF*IDF SEO Calculator

  • Content Aligned to Search Intent
    Increases semantic relevance of pages in relation to what Google associates with the topic.
  • Data-Driven Editorial Decision-Making
    Substitutes intuition in term selection with metrics extracted from real competitors.
  • Faster Article Optimization
    Reduces the time spent manually researching which words to insert in each text.
  • Enhanced Organic Positioning
    Brings the article’s vocabulary closer to the pattern of pages that already rank well.

Who Should Use the WDF*IDF SEO Calculator

  • Those producing content for blogs and portals that depend on organic traffic from Google.
  • You who write long articles and want to understand why competitors rank better for the same keyword.
  • SEO agencies and freelance writers who need to deliver optimized texts based on auditable technical criteria.
  • Those managing affiliate and e-commerce sites and looking to improve category, product, and review pages.

How to Download the WDF*IDF SEO Calculator

The WDF*IDF SEO Calculator is available for download here on Ultrapack. After saving the .zip file, go to Plugins > Add New > Upload Plugin in the WordPress admin panel, select the file, and activate it. The calculator appears in the admin sidebar and within the post editor, ready for immediate use.

For sites that depend on organic traffic, refining the vocabulary of each article is one of the most impactful adjustments in on-page SEO. The WDF*IDF SEO Calculator delivers this refinement systematically, removing subjectivity from the process and giving the writer an objective reference on which terms are missing from the text to compete on equal terms with the pages that already dominate the first page of Google.

Frequently asked questions

Is WDF*IDF SEO Calculator GPL-licensed?

Yes. WDF*IDF SEO Calculator is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.

Can I use WDF*IDF SEO Calculator on multiple sites?

Yes. You can install WDF*IDF SEO Calculator on as many sites as you want. Only automatic updates through Ultrapack Auto Updater have a limit: from 3 to 80 sites, depending on the plan.

How much does WDF*IDF SEO Calculator cost at Ultrapack?

WDF*IDF SEO Calculator costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$12/mo (VIP I).

Does WDF*IDF SEO Calculator include updates?

Yes. The current version of WDF*IDF SEO Calculator is 1.0.5, published at Ultrapack on Mar 2, 2020. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).

Is WDF*IDF SEO Calculator scanned before publication?

Yes. Every version of WDF*IDF SEO Calculator goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.