How to Do Keyword Research for Blog (Free Tools Guide)
How to Do Keyword Research for Blog (Free Tools Guide)
Keyword research is the foundation of successful blogging. Without it, you're essentially guessing what your audience wants—and hoping Google notices. In 2026, the process has evolved, but the core principle remains: find what people are actually searching for, then create content that answers their questions better than anyone else
.
The good news? You don't need expensive software to get started. This guide will walk you through a complete keyword research workflow using only free tools.
Table of Contents
- Why Keyword Research Matters in 2026
- The 4-Step Keyword Research Framework
- Free Tool #1: Google Keyword Planner
- Free Tool #2: AnswerThePublic
- Free Tool #3: Google Search Console
- Free Tool #4: Ubersuggest
- Free Tool #5: AlsoAsked
- Free Tool #6: Google Trends
- Free Chrome Extensions for Keyword Research
- How to Analyze a Keyword (What Metrics Matter)
- Step-by-Step Keyword Research Workflow
- Common Mistakes Beginners Make
- Quick Reference: Free Tools Summary
- 15 Related Hashtags
Why Keyword Research Matters in 2026
Creating content without keyword research is a gamble. You might produce something useful, but without confirming what people are actually searching for, you're spending resources on content that may never be found .
What's Changed in 2026
AI Overviews have changed the game. Google now displays AI-generated summaries at the top of 16-30% of searches . For informational queries, organic click-through rates dropped 61% when an AI Overview appears .
But here's the opportunity: 94% of AI Overviews cite a URL from the top 20 organic results
. You don't need to be #1 to be cited—even position 20 has a 7% chance if your content has the structured data the AI needs.
Long-tail keywords matter more than ever. They convey highly specific intent and mirror the natural language patterns behind voice and AI queries . And 70% of all search queries are long-tail .
Search intent is king. Google organizes intent into four categories: Informational, Navigational, Commercial, and Transactional . No amount of optimization compensates for a content-to-intent mismatch.
The 4-Step Keyword Research Framework
Before diving into tools, understand the process. Good keyword research follows this framework:
- Seed Generation – Brainstorm your core topics
- Keyword Discovery – Use tools to expand your list
- Analysis & Filtering – Evaluate which keywords are worth targeting
- Intent Verification – Confirm what searchers actually want
Let's walk through each step using free tools.
Free Tool #1: Google Keyword Planner
Best for: Baseline search volume and commercial intent validation
Google Keyword Planner is the most authoritative free source of search data because it comes directly from Google . While designed for advertisers, it's essential for SEO keyword research.
How to Access It
- Create a free Google Ads account (you don't need to run ads)
- Go to Tools & Settings → Keyword Planner
- Choose "Discover new keywords"
What You Get for Free
When you enter a seed keyword, you'll see :
- Average monthly searches
- Competition level (low, medium, high)
- Top-of-page bid estimates (shows commercial value)
Limitations
- Volume appears as ranges (e.g., 1K-10K) unless you're actively spending on ads
- No keyword difficulty metric
- Weak for long-tail keyword discovery
- Interface designed for advertisers, not SEOs
How to Use It Effectively
The "Start with a Website" strategy: Instead of typing a keyword, paste a competitor's URL. Google will list every keyword it believes is relevant to that page—often revealing "lateral" keywords you wouldn't have thought to search for .
Best use case: Use Google Keyword Planner to confirm whether a keyword has meaningful search demand, not as your only source of ideas .
Free Tool #2: AnswerThePublic
Best for: Finding question-based keywords and content ideas
AnswerThePublic visualizes search queries based on how users phrase questions, prepositions, and comparisons . It's invaluable for understanding what people actually want to know about a topic.
How It Works
Enter a seed keyword, and AnswerThePublic generates questions organized by:
- Who, what, where, when, why, which, how (informational intent)
- Comparisons (vs, or, and) – commercial intent
- Prepositions (for, with, without, near) – local/modifier intent
Free Tier Limits
- 3 searches per day on the free plan
- After that, you'll need to wait or upgrade
Pro Tip for Beginners
Use your 3 daily searches strategically. Enter your broadest seed keywords first, then export the results as CSV. You can mine question data for weeks from a single export.
Important Caveat
Search volume for questions is often zero monthly searches . Don't let that discourage you. These keywords still drive targeted traffic from people with specific problems to solve.
Free Tool #3: Google Search Console
Best for: Optimizing existing content and finding spinoff ideas
If you already have a blog, Google Search Console (GSC) is your most valuable free keyword tool. It shows you exactly what people are searching for to find your site .
How to Access
- Verify your site in Google Search Console (free)
- Go to Performance → Search results
- You'll see the top queries driving traffic to your site
What You'll Learn
For each query, GSC shows :
- Clicks – How many people visited from that search
- Impressions – How many times your site appeared
- Click-through rate (CTR) – The percentage of impressions that became clicks
- Average position – Where your page ranks
How to Use It for Keyword Research
Find content gaps: Look at queries where your page ranks but the CTR is low. Those are optimization opportunities.
Discover spinoff topics: Export your top-performing queries. Each one is a potential blog post idea.
Filter by URL: See exactly which keywords drive traffic to a specific page. This tells you what Google thinks that page is about—which may differ from what you intended.
Real example from WordStream: When analyzing their keyword research guide, the search console report showed queries like "easy keyword research" performing well. They incorporated that phrase into the post and wrote a separate article targeting it specifically .
Free Tool #4: Ubersuggest
Best for: All-in-one keyword discovery with difficulty scores
Neil Patel's Ubersuggest offers a generous free tier that combines keyword suggestions, search volume, and SEO difficulty .
Free Features
- 3 free searches per day (or 40 free searches/day via the Chrome extension)
- Keyword ideas with search volume, CPC, and competition
- SEO difficulty score (0-100)
- Content ideas from top-performing pages
What Makes It Different
Ubersuggest shows you why a keyword might be difficult to rank for by displaying:
- Domain scores of top-ranking pages
- Number of backlinks the top 10 results have
- Traffic estimates for each ranking URL
Pro Tip
Use the Chrome extension to see search volume data directly on Google, YouTube, and Amazon search results pages . When you search normally, the extension adds metrics next to each result.
Limitations
- Free plan is very limited (3 searches/day)
- Smaller database than paid tools like Semrush or Ahrefs
- Keyword difficulty scores can be less accurate
Free Tool #5: AlsoAsked
Best for: Mining "People Also Ask" data from Google
AlsoAsked visualizes Google's "People Also Ask" (PAA) data, revealing the questions people are asking after their initial search .
How It Works
Enter a keyword, and AlsoAsked builds a visual map of related questions. Click on any question to expand into deeper sub-questions.
Why This Matters
PAA questions provide better insights into user information intent than autocomplete data . They help you determine what other topics and questions are related to a given query.
Free Tier
The free version shows the first layer of questions. For deeper expansion and CSV exports, you'll need the paid plan starting at $29/month .
How to Use the Data
Use these questions as H2 and H3 headers in your blog posts. This structural alignment signals to Google's AI that your content answers specific user queries.
Free Tool #6: Google Trends
Best for: Identifying seasonal patterns and evergreen value
Google Trends shows you how search interest for a keyword changes over time .
What You Can Learn
- Is this keyword trending up or down? – Don't invest in dying topics
- When does interest peak? – Plan seasonal content in advance
- How do related terms compare? – See which variation people actually use
The "Evergreen Check"
A keyword might show solid volume in Keyword Planner, but Google Trends reveals the full story. For example, "Google Goggles" once had 14,000 monthly searches—but Trends showed interest had completely died out over time .
Pro Tip
Use Google Trends to find rising keywords before they show volume in other tools. New trends take time to appear in search volume databases, but Trends catches them in real-time .
Free Chrome Extensions for Keyword Research
These browser extensions add keyword data directly to your search results:
Ubersuggest Chrome Extension
- What it does: Shows search volume, CPC, and competition data on Google, YouTube, and Amazon
- Free limit: 40 searches per day (more generous than the web version)
- Also shows: Domain scores, backlink counts, and traffic estimates for ranking URLs
KWS Everywhere
- What it does: 100% free alternative to Keywords Everywhere
- Shows: Monthly search volume, CPC, and trends
- No signup required – just install and use
How to Analyze a Keyword (What Metrics Matter)
Not all keywords are worth targeting. Here's what to evaluate before creating content:
1. Search Volume
How many people search for this term monthly? Use Google Keyword Planner or Ubersuggest.
Beginner tip: Don't ignore low-volume keywords (10-100 searches/month). They often convert better because intent is more specific.
2. Keyword Difficulty
How hard will it be to rank? Free tools like Ubersuggest provide SEO difficulty scores (0-100).
Realistic target for new blogs: Aim for difficulty scores under 30. The lower, the better.
3. Search Intent
Always verify intent before writing. Run your keyword in Google and see what's ranking :
- Informational – Blog posts, guides, tutorials → You can write a blog post
- Commercial – Best X, reviews, comparisons → You need product/style content
- Transactional – Buy X, X price, X discount → You need a product page
- Navigational – Brand name, specific website → Hard to compete unless it's your brand
4. The AI Overview Check
Before targeting a keyword, search for it yourself. Does Google show an AI Overview at the top?
- If yes: Your goal shifts from "get clicks" to "get cited." Structure your content as the authoritative source the AI would want to reference .
- If no: Traditional SEO applies. Focus on ranking #1.
5. Long-Tail Specificity
Long-tail keywords (3+ words) have lower competition and higher conversion rates .
Example comparison:
| Head term | "hiking boots" | High (39) | Unclear |
| Long-tail | "hiking boots skechers" | Lower (27) | Very clear–someone wants to buy these specific boots |
Step-by-Step Keyword Research Workflow
Here's a complete workflow using only free tools:
Step 1: Brainstorm Seed Keywords (15 minutes)
Write down 5-10 broad topics related to your blog niche. Think about:
- Problems your audience has
- Questions they ask
- Products or services they use
Step 2: Generate Questions (15 minutes)
Take 3 of your best seed keywords to AnswerThePublic (free: 3 searches/day). Export the question data as CSV.
Step 3: Find Related Keywords (20 minutes)
Take your same seed keywords to Google Keyword Planner. Click "Discover new keywords" and review the suggestions. Look for keywords with at least 100-1,000 monthly searches.
Step 4: Check Difficulty and Volume (10 minutes)
Take promising keywords to Ubersuggest (free: 3 searches/day). Focus on keywords with:
- SEO difficulty under 30
- Clear search intent matching your content type
- Commercial signals (if you plan to monetize)
Step 5: Verify Intent (5 minutes per keyword)
Search your target keyword on Google. Check:
- Does an AI Overview appear?
- What content format ranks (listicles, guides, product pages)?
- Can you realistically compete?
Step 6: Expand with PAA Data (10 minutes)
Take your best keyword to AlsoAsked. Copy the People Also Ask questions as potential H2 headings for your post.
Step 7: Check Seasonality (5 minutes)
Run your keyword through Google Trends. Is interest stable, growing, or declining?
Step 8: Check Your Existing Content (10 minutes)
If you already have a blog, open Google Search Console. Filter for the last 3 months. Look for keywords where you rank between positions 5-20. These are your fastest opportunities for improvement.
Sample Output: A Complete Keyword Profile
After this workflow, you should have something like:
Target Keyword: "how to start a vegetable garden for beginners"
Search Volume: 1,000-10,000 (Google Keyword Planner)
Difficulty: 24 (Ubersuggest – good for new blog!)
Intent: Informational (search results show guides and tutorials)
AI Overview: No – good for organic clicks
Questions to answer: "what vegetables are easiest to grow,"
"when to start planting," "how often to water"
Related long-tail: "vegetable garden for small spaces,"
"beginner gardening tools list"Common Mistakes Beginners Make
Mistake #1: Only Targeting High-Volume Keywords
The top 3 results get 75% of clicks. Targeting a 10,000-volume keyword you can't rank for is worse than targeting a 100-volume keyword where you can be #1.
Mistake #2: Ignoring Search Intent
Writing a "how-to" guide for a keyword where Google shows product pages is a guaranteed failure. Always check what's ranking.
Mistake #3: Not Using Google Search Console
If you already have a blog, your best keyword opportunities are sitting in Search Console. Ignoring this data is like leaving money on the table.
Mistake #4: Overlooking Long-Tail Keywords
Beginners chase short, competitive keywords. Smart beginners chase specific, low-competition phrases that actual buyers use.
Mistake #5: Forgetting to Verify AI Overviews
If an AI Overview answers the query instantly, your strategy shifts from "getting clicks" to "getting cited." Structure your content differently—use clear headings, bullet points, and definitive answers .
Quick Reference: Free Tools Summary
| Google Keyword Planner | Baseline volume, commercial intent | Unlimited with Google Ads account | ads.google.com |
| AnswerThePublic | Question-based keywords | 3 searches/day | answerthepublic.com |
| Google Search Console | Your own site's keywords | Unlimited | search.google.com/search-console |
| Ubersuggest | Keyword difficulty, all-in-one | 3 searches/day (40 via extension) | ubersuggest.com |
| AlsoAsked | People Also Ask Questions | First layer only | alsoasked.com |
| Google Trends | Seasonality, trending topics | Unlimited | trends.google.com |
| Ubersuggest Extension | On-search-page data | 40 searches/day | Chrome Web Store |
| KWS Everywhere | Volume on search pages | Unlimited free | Chrome Web Store |
Final Thoughts
Keyword research isn't complicated. It's a repeatable process of asking "what are people searching for?" and “can I realistically rank for it?” With the free tools above, you have everything you need to build an SEO strategy that drives traffic.
The creators who succeed in 2026 aren't the ones with the biggest budgets—they're the ones who understand their audience's intent and create content that satisfies it better than anyone else.
Your action item this week: Pick one seed keyword, run it through all 6 tools listed above, and build a complete keyword profile. Then write one blog post optimized for that keyword.