Keyword Research: A Practical Guide to Finding the Right Keywords in 2026

Keyword research is the starting point of any SEO strategy. Here's how to do it right, with tools, methods, and selection criteria that actually work.


Keyword Research: A Practical Guide to Finding the Right Keywords in 2026

Keyword research is the foundation of any SEO strategy. Yet it's also one of the most misunderstood aspects of online positioning. Many reduce it to "finding words with the most monthly searches," when in reality it's a far more nuanced and strategic process.

In this article, I'll walk you through a complete keyword research process — from concept to practice — with the tools and criteria that matter in 2026.

What Keyword Research Is (and What It Isn't)

Keyword research is the process of identifying and analyzing the terms people use in search engines to find information, products, or services. The purpose is to understand what your audience searches for, with which words, and with what intent.

What it isn't:

  • It isn't making a random list of words and scattering them through your texts
  • It isn't just looking at monthly search volume
  • It isn't something you do once and forget
  • It isn't copying competitors' keywords without understanding them

Why It's So Important

Without keyword research, you're essentially building content blindfolded. You might write the best article in the world on a topic no one searches for, or compete on keywords so competitive that you'll never have a chance to rank.

Keyword research allows you to:

  • Understand your audience: the words people use reveal their needs, doubts, and intentions
  • Prioritize efforts: know which keywords have the best opportunity-to-difficulty ratio
  • Create targeted content: every piece of content answers a real question
  • Measure results: you can track rankings for specific keywords

The Concept of Search Intent

Before searching for any keyword, you need to understand the most important concept in modern SEO: search intent.

Every search has an underlying intent, and Google has become very good at understanding it:

Informational Intent

The user wants to learn something.
Example: "what is SEO," "how does a fixed-rate mortgage work"

Navigational Intent

The user wants to reach a specific website.
Example: "Gmail login," "SeoCheckly blog"

Commercial Intent

The user is evaluating a purchase.
Example: "best WordPress hosting 2026," "iPhone vs Samsung comparison"

Transactional Intent

The user is ready to buy or act.
Example: "buy .com domain," "book restaurant London"

Why it matters: if your content doesn't match the search intent of the keyword, you won't rank — no matter how well-written your article is. If a keyword has transactional intent and you offer an informational article, Google will show competitors' product pages instead.

The Keyword Research Process Step by Step

Step 1: Initial Brainstorming

Start with what you know. Ask yourself:

  • What problems does my product or service solve?
  • What questions do my customers ask most often?
  • How would my customers describe what I offer?
  • What terms do they use in everyday language (not technical jargon)?

Write everything down, unfiltered. This is the raw material.

Step 2: Expansion with Tools

Take your starting keywords and use tools to expand them:

Free tools:

  • Google Suggest: start typing a query on Google and observe the suggestions. They're based on real user searches.
  • "People Also Ask": the related questions Google shows in results. Each question is a potential keyword or subtopic.
  • Google Trends: to understand seasonality and search trends over time.
  • Google Search Console: if you already have a site, it shows queries your site appears for — including ones you haven't optimized for yet.
  • Answer The Public: generates questions and prepositions related to a keyword.

Paid tools:

  • Ahrefs: the most comprehensive for keyword research. Shows volume, difficulty, related keywords, competitor keywords.
  • Semrush: excellent for competitive analysis and gap analysis.
  • Ubersuggest: a good middle ground, with limited free features.

Step 3: Analysis and Filtering

Not all keywords you find are good ones. You need to filter them with precise criteria:

Search volume: how many times per month the keyword is searched. But be careful: high volume isn't automatically good. A keyword with 100 monthly searches but highly targeted can convert better than one with 10,000 generic searches.

Keyword Difficulty (KD): how hard it is to rank for that keyword. Depends on the authority and quality of sites already ranking. If the top 10 results are all sites with Domain Authority 90+, you probably need a different keyword.

Relevance: is the keyword truly relevant to your business? If you sell handmade shoes and find a high-volume keyword about "Nike shoes," that's not your keyword.

Intent: does it match the type of content you can and want to create?

Commercial potential: for businesses, it makes sense to ask: can this keyword lead to a conversion?

Step 4: Grouping into Topic Clusters

Keywords shouldn't be treated individually. They should be grouped into topic clusters — groups of related keywords that can be covered by a single piece of content or a group of connected content.

Example cluster for "local SEO":

  • Main keyword: "local SEO"
  • Related: "how to do local SEO," "local SEO Google," "Google Business Profile optimization"
  • Long tail: "how to improve local SEO for restaurants," "local SEO for professionals"
  • Questions: "how much does local SEO cost?," "does local SEO work?"

A single well-structured article can rank for the entire cluster, not just the main keyword.

Long-Tail Keywords: Why They're Valuable

Long-tail keywords are more specific queries with less volume but three enormous advantages:

1. Less competition: easier to rank for
2. Clearer intent: you know exactly what the user wants
3. Higher conversion rate: someone searching for something specific is often closer to taking action

Example:

  • "shoes" → too generic, impossible to compete

  • "men's running shoes" → still competitive

  • "men's running shoes for overpronation under $100" → long tail, high conversion

Keyword Research in 2026: What's Changed

AI's Impact on Search

With the advent of Google's AI Overviews and generative search engines, how people search is changing:

  • Conversational queries are increasing: "what's the best way to..." instead of "best way"
  • Complex queries are more common: people ask detailed questions because they know AI can handle them
  • The concept of keyword is expanding toward the concept of topic: Google understands context, not just exact words

Keyword Research for GEO

If you want your content to be cited by generative AI, keyword research must also include:

  • Questions people would ask an AI assistant: "explain how... works," "compare X and Y," "what's the difference between..."
  • Queries requiring structured answers: AI loves to cite content that provides clear, organized responses
  • Topics with unique data: if you have original data on a subject, AI has a reason to cite you

Common Keyword Research Mistakes

1. Volume obsession: chasing only high-volume keywords while ignoring relevance and difficulty
2. Ignoring intent: ranking for a transactional keyword with informational content (or vice versa)
3. Keyword stuffing: repeating a keyword 50 times thinking it will improve ranking. Hasn't worked since 2012
4. Not updating research: the keyword landscape changes. What people search for today differs from a year ago
5. Blindly copying competitors: competitor keywords are a starting point, not a plan to copy

From Research to Action: The Editorial Calendar

Keyword research isn't an end in itself. It must translate into an editorial plan:

1. Map each cluster to a specific piece of content (article, page, guide)
2. Set priorities: start with keywords that have the best opportunity-to-difficulty ratio
3. Create a calendar: plan publication over time
4. Assign keywords to existing pages: you often already have pages that could rank better with small optimizations
5. Monitor and adapt: after publication, track rankings and adjust

Keyword Research Tools: Quick Comparison

| Tool | Price | Strengths | Best For |
| --- | --- | --- | --- |
| Google Search Console | Free | Real data from your site | Everyone |
| Google Suggest | Free | Suggestions based on real searches | Brainstorming |
| Google Trends | Free | Trends and seasonality | Temporal analysis |
| Answer The Public | Freemium | Questions and variations | Content planning |
| Ubersuggest | From $29/mo | Good value for money | Small businesses |
| Ahrefs | From $99/mo | Most comprehensive | SEO professionals |
| Semrush | From $119/mo | Competitive analysis | Agencies and teams |

In Summary

Keyword research is the GPS of your SEO strategy. Without it, you risk wasting time and resources on content no one searches for or on which you have no chance of ranking.

The process isn't complicated, but it requires method: start with brainstorming, expand with tools, filter with objective criteria, group into clusters, and translate everything into action. Then monitor and adapt.

In 2026, with the advent of AI, the concept of keywords is evolving — but the basic principle remains the same: understand what your audience searches for and give them exactly what they need.

Want to discover which keywords your site ranks for? Our free SEO analysis tool shows you the complete picture.