By WorkflowVerdict | Last Updated: April 2026 | Step-by-step guide verified against Semrush tools
Keyword research is the single highest-leverage SEO activity you can do. Get it right and every piece of content you publish has a real chance of ranking. Get it wrong and you're writing into a void — producing content nobody is searching for, or competing against sites you can't realistically beat for years.
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Estimated time to complete a full keyword research session: 2–3 hours. The output: a prioritized list of keywords with enough content direction to plan 3–6 months of publishing.
📋 What You'll Have After This Guide:
- A seed keyword list covering your niche
- Filtered, qualified target keywords sorted by opportunity
- Competitor keyword gaps — keywords they rank for that you don't
- A topic cluster map for building topical authority
- A prioritized publishing queue based on difficulty and intent
- A repeatable research workflow you can run every quarter
- A Semrush account — Pro plan minimum (Guru recommended for Content Toolkit)
- Your website set up as a Project in Semrush
- 2–3 competitor domains identified in advance
- A spreadsheet open to record your keyword list
How Semrush Keyword Research Actually Works
Semrush's keyword research suite has four primary tools. Each one serves a different purpose in the research workflow — and understanding when to use each one is the difference between finding 20 obvious keywords and finding 200 high-opportunity targets your competitors haven't fully covered.
| Tool | What It Does | When To Use It |
|---|---|---|
| Keyword Magic Tool | Generates thousands of keyword variations from a seed term | Start here — initial keyword discovery |
| Keyword Overview | Deep analysis of a single keyword — volume, difficulty, SERP, intent | Qualify specific keywords before committing |
| Keyword Gap | Compares your rankings vs up to 5 competitors simultaneously | Find keywords competitors rank for that you don't |
| Organic Research | Shows every keyword any domain ranks for | Reverse-engineer what's working for top competitors |
Part 1: Build Your Seed Keyword List
⏱ Time required: 15 minutes | The foundation everything else builds on
Before opening Semrush, write down 10–15 seed keywords by hand. These are the core topics your site covers — not specific long-tail phrases, but the broad subjects your audience cares about. For an affiliate site covering SaaS tools, seeds might be: "CRM software," "project management tools," "email marketing platform," "video conferencing," "help desk software."
Open Keyword Magic Tool
In the left sidebar, go to Keyword Research → Keyword Magic Tool. You'll see a search bar at the top. Make sure your target country is set correctly (flag icon next to the search bar) — keyword volumes vary significantly by country.
Enter your first seed keyword and run the search
Type in your first seed term and hit Search. Semrush will return thousands of keyword variations — organized by relevance, with volume, keyword difficulty (KD%), cost per click (CPC), competitive density, and intent data for each one.
Use the left panel to explore topic clusters
On the left side of the Keyword Magic Tool, you'll see a list of subtopic groups — Semrush automatically clusters keywords by theme. Click each cluster to see keywords organized by the same sub-topic. This is how you quickly identify content pillars and subtopics within your niche without manually sorting thousands of results.
Part 2: Apply Filters to Find Winnable Keywords
⏱ Time required: 20–30 minutes | This is where most beginners go wrong
Raw keyword lists from the Magic Tool are useless without filtering. The goal is to find keywords with enough search volume to matter, low enough difficulty to rank for given your site's current authority, and the right intent to match what your content can deliver. Here's exactly how to filter.
🔧 Filter 1: Set Keyword Difficulty Range
Click KD% in the filter bar at the top. Set a maximum based on your site's authority:
| Your site's status | Recommended KD% max | What this means |
|---|---|---|
| New site (0–6 months, low DR) | 0–30% | Very low competition — realistically rankable early |
| Growing site (6–24 months, some backlinks) | 0–50% | Competitive but achievable with good content |
| Established site (2+ years, strong backlink profile) | 0–70% | High competition — only target with depth and authority |
🔧 Filter 2: Set Search Volume Minimum
Click Volume in the filter bar. Set minimum to 100 for new sites, 500 for established sites. This removes keywords that technically exist but won't drive meaningful traffic even if you rank #1. Don't chase zero-volume vanity keywords.
🔧 Filter 3: Filter by Search Intent
Click Intent in the filter bar. Semrush classifies every keyword into four intent types:
For affiliate and content sites: Filter for Commercial + Informational first. Build your content library around commercial intent (reviews, comparisons, alternatives) and supplement with informational content to build topical authority.
🔧 Filter 4: Exclude Brand Keywords
Use the Exclude filter to remove competitor brand names unless you're specifically writing comparison content. Typing a brand name like "Semrush" in the exclude box removes all keywords containing that term — keeping your list focused on non-branded opportunity.
Part 3: Qualify Individual Keywords with Keyword Overview
⏱ Time required: 5 minutes per keyword | Don't skip this step
The Keyword Magic Tool gives you lists. Keyword Overview gives you depth. Before committing to a target keyword, click through to its Keyword Overview to verify the full picture. Here's what to check for each keyword you're seriously considering.
Check Trend data — is volume growing or declining?
The trend graph shows 12 months of search volume history. A keyword with 2,000 monthly searches but a declining trend (was 5,000 six months ago) is less valuable than a keyword with 1,000 monthly searches that's growing. Prioritize trending up over stable volume.
Examine the SERP Analysis section
Scroll to the SERP Analysis in Keyword Overview. This shows the actual top 10 ranking pages for this keyword. Check three things:
1. Who is ranking? If the top 10 is all Wikipedia, Forbes, and Investopedia, you're targeting a keyword where you cannot compete regardless of KD%.
2. What type of content ranks? Are the top results reviews, listicles, tutorials, or comparisons? This tells you what format Google expects for this query.
3. Are there affiliate sites ranking? If similar affiliate/content sites are in the top 10, you have a realistic path to ranking there too.
Check SERP Features — are there featured snippets or AI Overviews?
Keyword Overview shows which SERP features appear for this keyword. If Google shows an AI Overview for this query, organic click-through rates may be lower even at position 1. If there's a featured snippet, structuring your content to capture it can dramatically increase traffic.
Look at Personal Keyword Difficulty (PKD%)
If your domain is connected as a project in Semrush, the Keyword Overview shows you a PKD% — your personal keyword difficulty, calculated based on your specific domain's authority and backlink profile. This is more accurate than generic KD% for deciding whether you can rank. PKD% below 50% on your connected domain = realistic target.
Part 4: Steal Keywords from Competitors with Keyword Gap
⏱ Time required: 20 minutes | The fastest way to find proven keyword opportunities
This is the most powerful step in the entire research process — and the one most beginners skip. The Keyword Gap tool shows you keywords your competitors rank for that you don't. These are proven opportunities: Google has already confirmed that this type of content ranks in your niche, and your competitors have done the work of validating the topic. You just need to produce a better version.
Open Keyword Gap tool
Go to Competitive Research → Keyword Gap in the left sidebar. You'll see a comparison interface with boxes for multiple domains.
Enter your domain and up to 4 competitors
In the first box, enter your domain. In the next boxes, enter your top 2–4 competitor domains. Use domains of similar-sized content sites in your niche — not mega-publishers like Forbes. Choose competitors whose content quality and domain authority are within a realistic range of yours.
Click "Missing" in the overlap filter
After running the comparison, you'll see tabs at the top: All, Missing, Weak, Strong, Untapped, Unique. Click Missing — this shows keywords where all of your competitors rank but you don't appear at all. These are your highest-priority gap opportunities.
| Filter Tab | What It Shows | Priority |
|---|---|---|
| Missing | Competitors rank, you don't appear | Highest — start here |
| Weak | You rank lower than all competitors | High — improve existing content |
| Untapped | Some competitors rank, others don't | Medium — emerging opportunities |
| Strong | You rank higher than all competitors | Maintain — protect these rankings |
Apply KD% and volume filters, then export
Apply the same difficulty and volume filters as Part 2. Sort by Volume descending to see the highest-impact missing keywords first. Click Export (top right) to download the list as a CSV. This becomes the foundation of your content calendar.
Part 5: Reverse-Engineer Competitors with Organic Research
⏱ Time required: 20 minutes | Find proven content ideas instantly
While Keyword Gap shows what competitors rank for that you don't, Organic Research shows you their complete keyword universe — and more importantly, their top-performing pages. This tells you exactly what content is driving real traffic in your niche right now.
Enter a competitor domain into Organic Research
Go to Competitive Research → Organic Research. Enter your top competitor's domain. You'll see their estimated monthly traffic, total keywords, and traffic value. Click the Pages tab to see which individual pages drive the most traffic.
Analyze their top traffic pages
The Pages tab shows each URL, estimated traffic, number of keywords that page ranks for, and traffic value. Sort by traffic descending. The top pages tell you what topics are most valuable in your niche right now.
Look at their Position Changes
Click the Position Changes tab in Organic Research. This shows keywords where your competitor recently gained ranking positions. Keywords they're climbing on represent areas where Google is rewarding this content type right now — follow the momentum.
Part 6: Build Your Topic Cluster Structure
⏱ Time required: 20 minutes | How to build topical authority that compounds over time
Random keyword targeting is the #1 mistake content sites make. Google rewards sites that demonstrate expertise across an entire topic — not sites that publish individual articles on random keywords. A topic cluster is the structure that communicates topical authority: one comprehensive pillar page covering a broad topic, supported by multiple cluster pages covering subtopics in depth, all internally linked.
How to identify your topic clusters using Semrush:
Return to Keyword Magic Tool — enter a broad pillar topic
Enter your main pillar keyword (e.g., "SEO tools"). Look at the left panel topic clusters. Each cluster represents a potential cluster page topic. A pillar on "SEO tools" might have clusters for "keyword research tools," "backlink analysis tools," "rank tracking tools," "site audit tools" — each one a dedicated article.
Use the Topical Authority feature (Guru+)
On Guru plans, the Keyword Overview includes a Topical Authority score — showing how authoritative your domain is on specific topics compared to competitors. If your Topical Authority on "SEO tools" is low versus competitors, you're missing cluster content. The tool shows exactly which subtopics are underrepresented on your site.
Map your cluster structure before writing
Create a simple table in your spreadsheet: Pillar page in row 1, cluster pages below it. For each cluster page, note the target keyword, monthly volume, KD%, and content type (review, comparison, how-to, list). This map becomes your editorial calendar.
Part 7: Prioritize Your Keyword List for Publishing
⏱ Time required: 15 minutes | Turn your list into an actionable publishing queue
By now you have a keyword list from Keyword Magic Tool, competitor gap keywords from Keyword Gap, and top-page insights from Organic Research. The final step is prioritizing what to write first.
Score each keyword on these four criteria — 1 to 3 points each — and publish in descending score order:
| Criteria | 1 point | 2 points | 3 points |
|---|---|---|---|
| Search Intent | Informational | Transactional | Commercial |
| Keyword Difficulty | 50–70% KD | 30–50% KD | Under 30% KD |
| Monthly Volume | 100–500 | 500–2,000 | 2,000+ |
| Trend Direction | Declining | Stable | Growing |
Maximum score: 12 points. Keywords scoring 10–12 go to the top of your publishing queue. Keywords scoring 7–9 are solid mid-priority. Keywords scoring below 6 go on a watch list — revisit in 6 months or when your domain authority increases.
Part 8: Generate SEO Content Briefs Automatically (Guru Plan)
⏱ Time required: 5 minutes per article | Guru plan only
Once you've selected your target keyword, the SEO Content Template (Guru plan) generates a data-backed content brief automatically. This is where Semrush separates itself from every other keyword research tool — it doesn't just find keywords, it tells you exactly how to write the content.
How to use it:
- Go to Content Marketing → SEO Content Template in the left sidebar
- Enter your target keyword and select your target country
- Click Create SEO template
- Semrush analyzes the top 10 ranking pages for your keyword and returns: recommended word count, semantically related keywords to include, readability score target, top sites to get backlinks from, and competing domains to outperform
- Use the Real-time Content Check tab to open the SEO Writing Assistant — paste or write your content and get a live score as you type
✅ Complete Keyword Research Checklist
Part 1 — Seed Keywords
☐ 10–15 seed keywords written out before opening Semrush
☐ Country set correctly in Keyword Magic Tool
☐ Topic clusters explored in the left panel
Part 2 — Filtering
☐ KD% range set based on your site's current authority
☐ Volume minimum applied (100 for new sites, 500 for established)
☐ Intent filtered to Commercial + Informational
Part 3 — Keyword Qualification
☐ Trend checked for each shortlisted keyword
☐ SERP analysis reviewed — affiliate sites present in top 10
☐ Content format confirmed (review, list, how-to, comparison)
Part 4 — Keyword Gap
☐ Keyword Gap run with your domain + 2–4 competitors
☐ Missing keywords exported with filters applied
☐ Weak keywords noted for existing content improvement
Part 5 — Competitor Research
☐ Top 3 competitor domains run through Organic Research
☐ Top 10 traffic pages noted per competitor
Part 6 — Topic Clusters
☐ Pillar + cluster structure mapped in spreadsheet
☐ Each cluster has a target keyword and content format assigned
Part 7 — Prioritization
☐ Each keyword scored on Intent, KD%, Volume, Trend
☐ Publishing queue sorted by score descending
Part 8 — Content Briefs (Guru)
☐ SEO Content Template generated for each article before writing
Don't Have Semrush Yet?
Semrush's 7-day free trial gives you full access to Keyword Magic Tool, Keyword Gap, Organic Research, and Keyword Overview — everything you need to run this complete keyword research workflow before paying a dollar. Use the 7 days to run research for your top 3 content priorities and you'll know immediately whether the platform is worth the investment for your business.