With WDF Calculator you can quickly and simply calculate the WDF - value (Within Document Frequency) for any text and suitable for the German markets. You must specify only one keyword for which you want to calculate the WDF - value, insert the desired text and you're ready to go. As a result, you will receive not only the WDF - value for your keyword matching, but also all WDF - values for all the other words occurring in the text and keywords. All linguistic features for the German Markets (Germany, Swiss and Austria) are supported in this tool. Webdesign and SEO has never been easier.