On-Page SEO

How to Do Keyword Research (The Working Method)

How to conduct keyword research end to end: seeds, expansion, intent, difficulty, and mapping keywords to pages — with the free and paid tools that do each step.

11 min readBy the ProRank team
A magnifying glass qualifying search queries into a content plan

Keyword research is deciding what your pages are for.Every page that ranks started as someone’s choice to target a phrase real people search — and every page that doesn’t rank usually skipped that choice. Here is the working method, the same one this blog is built on: seed, expand, qualify by intent, judge winnability, map to pages.

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Average monthly US search volume. Source: Google autocomplete demand via AnswerThePublic, 2026.

The five-step method

Seed to shipped
1Seed topics2Expand3Qualify intent4Judge winnability5Map to pages

Step 1 — Seed from your business, not a tool

List the ten to twenty phrases that describe what you sell and the problems it solves, in your customers’ words — support tickets, sales calls, and reviews are gold here. Tools expand seeds; only you can choose them.

Step 2 — Expand into the real phrasings

For each seed, harvest what people actually type: Google Autocomplete, People Also Ask, question-mining tools that organise autocomplete by question word, and — most underused — Search Console’s query report, which lists phrases you already half-rank for. Expansion is where the surprises live: our own research found “seo audit for website” outsearching the phrasing we’d have guessed by multiples.

Step 3 — Qualify by intent

Every keyword wants one of four things, and the page must match:

  • Informational — “what is a 301 redirect” → a guide.
  • Commercial — “best wordpress seo plugins” → a comparison.
  • Transactional — “prorank pricing” → a product page.
  • Navigational — a brand search → their page, not yours; skip it.

Intent mismatches are unwinnable: no product page ranks for a “what is” query, no matter the optimisation.

Step 4 — Judge winnability

Volume is only half the equation; the other half is who already ranks. Check the current top ten: if it is all major-brand pillar pages, earn your way up through the specific questions they answer shallowly. Volume × relevance × winnability — rank by the product, not by volume alone.

Step 5 — Map keywords to pages

One primary keyword per page, its question-cluster as the H2s, and the cluster interlinked hub-and-spoke (the structure is covered in the internal linking guide). Keep the map in a sheet: keyword → volume → intent → target URL → status. That sheet is your content plan.

The tool stack, honestly

  • Free tier: Google Autocomplete + People Also Ask, Search Console, Keyword Planner ranges.
  • Question mining: autocomplete aggregators that surface the question phrasings at scale — the source of the demand charts across this blog.
  • Full suites (Ahrefs, Semrush): volumes, difficulty, and competitor gap analysis when the budget justifies it.
  • Inside WordPress: ProRank’s keyword research tools bring volume and difficulty data into the editor — including an Ahrefs-powered keyword overview on Pro plans — so the research → focus keyword → optimised page loop happens where you write.

Next step after the research: make sure the pages you map can actually rank — run the free audit to catch the technical issues that waste good keyword targeting, then work the WordPress SEO checklist top to bottom.

Frequently asked questions

What is keyword research in SEO?
Keyword research is finding out what your potential customers actually type into search engines — the exact words, the monthly volume, and the intent behind them — and then deciding which of those queries each page of your site should target. It turns content from guessing into allocation: effort goes where measured demand already exists.
Why is keyword research important?
Because the cost of skipping it is invisible: you write good content for phrases nobody searches, while the phrasings people do use go to competitors. Research also reveals intent — whether a query wants a definition, a comparison, or a product — which decides what kind of page can rank for it at all.
How do I do keyword research for free?
A workable free stack: Google Autocomplete and the People Also Ask boxes for expansion, Google Search Console for the queries you already rank for (your fastest wins live there), and Google Keyword Planner for rough volume ranges. Paid tools add reliable volumes, difficulty scores, and competitor gaps — useful, but the method matters more than the toolbox.
How many keywords should one page target?
One primary keyword per page, plus the cluster of close variants and questions that mean the same thing. If two keywords have genuinely different intents, they deserve two pages; if they mean the same thing ("seo report template" / "seo report example"), splitting them cannibalises your own rankings.
What is keyword difficulty and does it matter?
Difficulty estimates how strong the pages currently ranking are — usually from their backlink profiles. It matters as a reality check: a new site targeting a difficulty-80 head term is donating content to the void. The practical play is winnable specifics first (questions, long-tails, local variants), building toward the head terms as authority grows.

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