What is keyword research?
Keyword research is the process of finding the searches people make around your topic and deciding which ones deserve a page. It answers three questions: what do people call this thing, what do they want when they search it, and can your site realistically compete for it.
The output is not a list of words to repeat. It is a plan: which pages to write or improve, which query each page should serve, and which related questions each page needs to answer.
Where keyword ideas come from
Free sources cover most small and mid-sized sites:
- Google Search Console. The Performance report shows queries you already get impressions for, including ones you never targeted. Pages ranking in positions 8 to 20 for a query are often the quickest wins.
- Google autocomplete, People Also Ask, and related searches show how people phrase questions.
- Google Keyword Planner gives search volume ranges and related terms. It is built for advertisers, so ranges are broad for accounts without active ads.
- Your customers. Support emails, sales calls, reviews, and forum threads use the words real buyers use.
- Competitors' pages that rank for your topics show which subtopics the results reward.
Paid SEO tools add estimated volumes, difficulty scores, and competitor keyword lists. Treat their numbers as estimates: they are modeled, not taken from Google.
Judging a keyword
For each candidate, look at:
- Intent. Search it and read the results. If the top results are product pages and you planned a guide, the query wants something else. See search intent.
- Relevance. Would someone searching this want what you offer? A high-volume query with no path to your product or expertise is rarely worth it.
- Competition. Who ranks? Big brands and sites with deep coverage are harder to displace than forum threads and thin pages.
- Value. A small number of searches from ready-to-buy visitors can be worth more than a large number from casual browsers.
Group keywords that share an intent into one page. "cold brew ratio", "cold brew coffee to water ratio" and "how much coffee for cold brew" belong on the same page. Separate pages for each would compete; see keyword cannibalization.
Common mistakes
- Chasing volume and ignoring intent and relevance.
- Ignoring long-tail keywords, which are often where small sites win first.
- One page per keyword variation instead of one page per intent.
- Keyword stuffing. Using the phrase naturally in the title, a heading, and the opening is plenty. Hydrogen SEO's on-page analysis scores focus keyword use, with full points for a density between 0.5 and 2.5 percent.
- Doing it once. Queries change. Revisit research when you refresh old posts.
Common questions
What is the best free keyword research tool?
Google Search Console, because it shows real queries your site already appears for. Pair it with autocomplete, People Also Ask, and Keyword Planner for new ideas.
How many keywords should one page target?
One main intent, plus the natural variations and related questions that belong with it. That is often dozens of closely related queries.
Are search volume numbers accurate?
They are estimates, often rounded or modeled. Use them to compare options, not as a forecast of traffic.