Keyword tools for analyzing and researching search terms

A recent trend in keyword research is the content analysis of Google's best-ranked websites for a specific search term using WDF * IDF - a mathematical formula that includes logarithmic search term density, term weights, and union set calculation is working.

Keyword tools for analyzing and researching search terms

Keyword tools help you create good and relevant content for your website. The basis for this is comprehensive keyword research for frequently searched terms, word combinations, long-tail keywords, term weightings, and search trends. With their help, you can focus your content exactly on the search queries and topics that your users are looking for!

A recent trend in keyword research is the content analysis of Google’s best-ranked websites for a specific search term using WDF * IDF – a mathematical formula that includes logarithmic search term density, term weights, and union set calculation is working. The keyword density only plays a minor role.

Keyword Research: Keyword Analysis Tools

The basis for ranking-strong texts is a comprehensive search of keyword trends and search behavior of your target group. Before you start blindly creating new content, you should be aware of what you are looking for. The following keyword tools will help you:

Google Ads Keyword Planner

The Google Ads Keyword Planner is one of the best tools for analyzing and researching search terms! It’s a powerful tool for analyzing search volume and generating keyword ideas based on different search criteria. To display the keyword suggestions, up to a maximum of 100 search words can be specified or, alternatively, suggestions based on a website can be generated automatically by specifying the URL. Even suggestions from a matching Google category are possible to determine the best Keywords for the most common searches.

When creating the list of ideas, the Google Ads Keyword Tool uses specific search queries and identifies the competition factor and estimated monthly searches for each proposal. Unfortunately, to use the Google Keyword Planner, it is now necessary to have at least one active Google Ads campaign.

Google Suggest

Google Suggest is the autocomplete Google search. As you enter a search term, Google will expand the word input with relevant search suggestions based on various factors, such as search frequency, search frequency, search behavior, and geolocation.

It can be assumed that the proposed search phrases are very popular search terms (long-tail keywords) – therefore, it makes sense to include them in your own keyword research. Personally, I always enter all relevant terms in an Excel spreadsheet and then analyze their potential with the Google Keyword Planner.

Google Trends

Google Trends is the keyword research tool par excellence when it comes to content research. With the help of Google Trends, you not only get information about what’s hot right now, you can also search for terms and see how their search behavior has evolved over the past few years. Also, a comparison of several search terms and other search variants can be evaluated.

Especially with seasonal terms, it is fascinating to observe the search behavior and the peaks at specific seasons. When it comes to content analysis and research, there’s no getting around Google Trends.

Google Correlate

Google Correlate is an analysis tool that provides information about how strongly the frequency of multiple search terms correlates with each other at a specified time interval. Using Google Correlate, you can analyze the search frequency of individual terms in relation to other search terms within a defined period of time, allowing you to draw conclusions about emerging trends in society.

Unlike Google Trends, Google Correlate does not analyze the frequency of search queries for a single search term, but rather the frequency of search terms relative to others within a fixed time period. When querying a search term in Google Trends, you get information about the activity of the search term within a defined period of time. With Google Correlate one enters its search term and receives a list of further search terms, which in frequency have a similar time course.


Straight away: Genius Keyword Research Tool! Using a given search term and a freely selectable language, the tool analyzes appropriate questions and prepositions that are frequently asked by searchers via Google & Co. For example, a search query for the term “keyword analysis” will yield the appropriate questions “how does keyword analysis work” or “what is keyword analysis” – ideal results for determining long-tail keywords!

The special thing about AnswerThePublic is not only the extraordinary appearance (you’ll see what I mean), but the extremely successful visualization of the search results and their meaningful subdivision into question words or W-questions (who, how, what, where, when, why, etc.).


Hypersuggest is my absolute favorite in keyword research – it’s free and without limitations! Based on a search term, the tool queries the matching search queries on Google, Youtube, and Google Shopping, evaluates them, and then provides the evaluation in a clear list for download. You can decide for yourself whether you want to export the whole list as a CSV for Excel or just individual entries.

When analyzing and querying the keyword suggestions, you can decide for yourself whether the search term you define should be advanced or adjusted, or both in combination. It is also possible to determine for which country the search results should be queried. And as if that were not enough, the developer – himself a designated Bayer and beer lover – provides a W-questions tool that analyzes the most common questions about the keyword.


Thanks, Ubersuggest designed the tedious (manual) Keyword research much easier, because in seconds can be found new keywords. Just type in the keyword, select the target language, and you’ll get a comprehensive selection of matching Keyword extensions and long-tail keywords. For example, if you define “SEO” as the keyword, you will get the following keywords: SEO tools, SEO check, SEO analysis, SEO optimization, SEO agency, etc.! Although Ubersuggest does not replace professional Keyword analysis, it will save you a lot of time in the base.

The Keyword Tool from will allow you to query up to 750 keyword suggestions for free – for Google Search, Bing, the YouTube video sharing platform, Amazon, and the App Store! In addition, country-specific keywords can be queried for all countries in which the search engines/platforms are active.

The Keyword Tool takes the main term you are looking for and creates a list of alternative (matching) terms and search queries that are common in search results. Also, a W-questions tool for frequently asked questions about the defined search term is available. The complete list can be exported as a text CSV or Excel sheet.


The kwfinder is a rather young keyword analysis tool, but scores with a very clear design and great features with many useful keyword and competitive data.

After a quick and uncomplicated registration, it is possible in the free version to evaluate up to 50 relevant keyword suggestions by entering a search term. For each keyword, the top 10 of the Google SERPS can be queried – with detailed data on Domain Authority, Page Authority, Domain Trust, Social Shares, and more. Unfortunately, one gets very quickly the limits of the free version to feel, because the evaluation of the individual search terms is limited to 3 queries per day. Still, a great tool for occasional keyword analysis.

Mangotools SERP-Checker

The SERP Checker comes from the same forge as the kwfinder, but focuses on the analysis and evaluation of the TOP search hits in the Google SERPS. What is the competition for a specific keyword? How well are the best sites in this area? What effort must be made to place on the first page of the search hits? The tool provides the answers to all these questions.

Tip: The small inconspicuous button “Manage metrics” can query a variety of SEO-relevant metrics. The wealth of information is enormous!