SEO Competitor Analysis: A 5-Step Process to Find Keyword Opportunities

It’s 3 AM, and Chen stares blankly at Ahrefs keyword reports. His blog has been running for six months with content he considers high-quality, but traffic just won’t grow. Meanwhile, his competitor Lao Wang, who has fewer articles, somehow always appears at the top of search results.

He opens Lao Wang’s website and randomly searches a few terms: “industrial valve procurement guide,” “valve selection calculation formula,” “valve troubleshooting manual”… Each one is a precise long-tail keyword, each with clear search intent. Meanwhile, Chen wrote about “valve industry development trends” and “valve market analysis”—broad keywords like that.

The gap suddenly becomes clear.

A SEMrush research finding hits hard: teams that regularly conduct competitor analysis see traffic growth rates 2-3 times higher than those who skip it. The 2025-2026 data is even more telling—businesses that don’t analyze competitors see an average 18% decline in organic traffic, while those who do see over 30% growth.

You might think, “Isn’t this just ‘checking what competitors are doing’?” Not that simple. Real competitive analysis is a systematic approach. Today, I’ll break down this complete 5-step process to help you use SEMrush and Ahrefs to find keyword opportunities.

Why Conduct SEO Competitor Analysis

Honestly, I’ve seen too many teams skip this step. They think, “If I just create good content, won’t that be enough?”

Here’s the problem: what defines “good content”?

You write a 3,000-word in-depth article, thinking it’s packed with value. But your competitor writes three 1,000-word focused articles covering “what it is,” “how to do it,” and “common questions”—breaking down search intent more precisely—and they rank better.

This is what I call: you think you’re fighting a battle, but you’re actually swinging at air.

Competitor analysis delivers two core values: discover opportunities, avoid pitfalls.

Let’s talk opportunities first.

The keywords your competitors rank for represent real investments—their money and time spent on trial and error. They’re telling you: this keyword has commercial value, this keyword brings traffic, this keyword’s competition level is acceptable.

Consider this: you’re building an online design tool. You keep grinding away at the broad keyword “online design,” writing tons of content, but seeing little traffic. You open SEMrush to check competitors and find they focus on “poster design templates,” “online logo generator,” “social media graphics”—each with moderate search volume but high conversion rates.

That’s when you wonder: am I heading in the wrong direction?

Now let’s talk about avoiding pitfalls.

Some keywords look beautiful—tens of thousands in search volume, “medium” competition. But when you check the competitors, you see industry giants dominating with encyclopedia-level articles thousands of words long, backed by hundreds of backlinks. This is when you should think: I’ll bypass this pit and find gaps the giants haven’t covered.

Ahrefs’ 2024 report has compelling data: 70% of SEO experts rank competitor analysis as a top priority, second only to keyword research itself. What does this tell us? Professionals treat “watching competitors” as a fundamental skill.

Simply put, competitor analysis is free learning. You don’t need to make mistakes—others already made them for you. You don’t need to test paths—others already showed you which ones work.

Identify Your Real Competitors

This question might sound silly: aren’t competitors just people selling the same products?

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Well, yes, but not entirely.

In the context of SEO, competitors exist in three layers. If you only focus on the first layer, you’ll miss many opportunities.

Layer 1: Direct Competitors

People selling the exact same thing. For example, if you’re a foreign trade company selling industrial valves, other valve manufacturers and valve traders are your direct competitors. These are easiest to identify—you probably already know them.

Layer 2: Indirect Competitors

They don’t sell exactly the same products, but they’re competing for the same users. Still using the valve example—companies selling “pipe fittings,” companies doing “fluid control equipment,” and even industrial procurement platforms (Alibaba, Made-in-China) are all grabbing traffic from keywords like “valve procurement,” “industrial valve wholesale.”

Interestingly, these competitors are often overlooked. You only watch industry peers, only to find loads of traffic being eaten by these “crossover players.”

Layer 3: Unexpected Competitors

These are most easily missed. They could be media sites, industry blogs, Q&A platforms, or even government websites. They don’t sell valves, but they rank high for informational keywords like “valve selection,” “valve standards,” “valve maintenance.”

Imagine an engineer wanting to buy valves—what do they search first? Probably not “buy valves,” but “how to choose valves,” “valve model comparison chart,” “common valve problems.” Who shows up then? Not your peers, but platforms with extensive informational content.

How to systematically identify these three types?

My go-to method is keyword reverse lookup.

Open SEMrush or Ahrefs, enter seed keywords for your core business (like “industrial valves,” “valve procurement”), export the top 50 ranking domains. Then check each one and categorize them:

• Direct competition: websites selling the same products
• Indirect competition: websites selling related products, overlapping target users
• Unexpected competition: websites not selling products but covering lots of informational keywords

This categorization doesn’t need to be perfect—a rough judgment works. The key is not missing those “competitors who don’t look like competitors.”

That said, I’ve seen many teams complete this step only to realize they’d missed over half their competitors. They thought “our industry isn’t competitive,” but after checking, found plenty of people online grabbing traffic.

Keyword Gap Analysis Methods

Alright, now you know who your competitors are. Next question: which keywords do they rank for that you haven’t covered?

This is keyword gap analysis.

Using SEMrush for Keyword Gap

Log into SEMrush, find “Competitive Research” → “Keyword Gap” in the left menu.

The interface is simple—enter your domain on the left, competitor domains on the right (you can compare up to 5 simultaneously).

Click “Compare,” and you’ll see a four-quadrant chart:

• Missing: Competitors rank, you don’t (this is gold)
• Weak: You rank, but lower than competitors
• Untapped: Competitors rank, you haven’t created content for this keyword
• Unique: You rank, competitors don’t

Honestly, I focus most on the Missing quadrant. These keywords competitors are getting traffic from, and you’re not even in the game. Start finding opportunities here.

Click into the Missing list, sort by search volume, then filter one by one:

1. Search volume > 100 (too small isn’t worth the time)
2. Keyword difficulty (KD) below your capability range (new sites typically look for KD < 20)
3. Search intent matches your business

For example, if you’re in valve foreign trade and see a competitor ranking for “ball valve dimensions chart” with 500 search volume and KD 15. Can you target this? Absolutely. Create a detailed dimensions chart page, make it even better than your competitor’s, and you’ve got an opportunity.

Using Ahrefs for Content Gap

Ahrefs calls this feature “Content Gap,” found under “Competitive analysis” in the left menu.

The logic is similar: enter your domain and competitor domains, and Ahrefs lists keywords competitors rank for that you haven’t covered.

One advantage of Ahrefs is it automatically filters out low-value keywords (like those with extremely low search volume), giving you more refined results.

Also, Ahrefs’ “Top Pages” feature is very useful. Enter a competitor domain, sort by traffic, see which pages get the most traffic. Then click through to see which keywords that page covers. This approach is sometimes more intuitive than directly looking at keyword lists—you can see how content is organized.

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A Simple Filtering Table

Organize analysis results into a table for easier decision-making:

This table doesn’t need to be perfect—it’s meant to give you an overall sense of opportunities. High search volume + low KD + matching search intent = priority keywords.

Tool Selection Guide—SEMrush vs Ahrefs

Let’s talk price first, since everyone cares about this.

Ahrefs Individual is around $99/month. SEMrush has no free version but offers a 14-day free trial (requires card binding, remember to cancel). Both tools aren’t cheap, so choosing the right scenario matters.

I’ve used both extensively, so let me break down what each excels at.

When to Choose SEMrush

Scenario 1: You need a comprehensive all-in-one tool

SEMrush isn’t just keyword analysis—it integrates site audits, backlink analysis, advertising research, and social media monitoring. If your team is small and doesn’t want to switch between tools, SEMrush has higher integration.

Scenario 2: You’re doing Google Ads or social media advertising

SEMrush’s advertising research features are stronger—see competitor ad keywords, ad copy, and budget estimates. If your business involves both SEO and paid advertising, SEMrush is more suitable.

Scenario 3: You need detailed competitor reports for management

SEMrush’s report export function is excellent with beautiful charts and rich data dimensions. If you need to regularly report competitor dynamics to management, SEMrush saves lots of PPT-making time.

When to Choose Ahrefs

Scenario 1: You care more about backlink analysis

Ahrefs’ backlink database is widely recognized as the industry’s strongest. If you want to analyze competitor backlink sources, anchor text distribution, and backlink growth trends, Ahrefs is more precise than SEMrush.

Scenario 2: You’re an individual site owner or small team

Ahrefs’ interface is cleaner with lower learning costs. If you just want to do keyword research and content planning without needing fancy features, Ahrefs is more intuitive.

Scenario 3: You frequently analyze content structure

Ahrefs’ “Site Explorer” and “Content Explorer” are excellent for quickly seeing competitor content architecture. Want to know which competitor articles spread widely on social media? Content Explorer finds them instantly.

My Recommendation

If you’re budget-constrained, use SEMrush’s 14-day trial to complete basic analysis and export all data. Then assess whether you need a long-term subscription. Many projects, after one deep analysis round, can use free tools (Google Search Console + free SEO plugins) for daily monitoring.

If you have budget, or SEO is core to your business, both tools are worth subscribing to. They have different data sources—cross-verification makes analysis more reliable.

Final note: tools are just tools. What matters is knowing what to check, how to interpret data, and how to turn data into action. I’ve seen plenty of people with SEMrush who don’t know where to start.

From Analysis to Action—Complete 5-Step Process

Alright, theory’s done. Now here’s an immediately executable process—I’ve broken it into 5 steps.

Step 1: List Competitors (30 minutes)

Open Excel or Notion, create a spreadsheet. Using the three-layer classification method earlier, fill in 10-20 competitors.

How to find them? Three methods:

1. Google search your core keywords, record top 20 ranking domains
2. In SEMrush/Ahrefs, enter your domain, check “Competitors” report
3. Ask sales team: which competing brands do customers frequently mention?

Rank the list by importance. Time is limited—focus on analyzing the top 5 first.

Step 2: Export Competitor Keyword Data (1 hour)

Use SEMrush or Ahrefs to export each competitor’s keyword data.

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In SEMrush: Enter competitor domain → Organic Research → Positions → Export CSV

In Ahrefs: Enter competitor domain → Organic Keywords → Export

Combine all data into one spreadsheet. You’ll see thousands or tens of thousands of entries—don’t panic, next step is filtering.

Step 3: Filter High-Value Opportunity Keywords (1-2 hours)

This is the most critical step. Filter using these criteria:

Hard metrics:

• Monthly search volume > 100 (too low isn’t worth investment)
• KD value < your capability ceiling (new sites should aim for < 20)
• Number of pages ranking in top 10 < 3 (indicates low competition)

Soft metrics:

• Search intent matches your business
• You have the capability to create better content

Sort filtered keywords by priority. Typically you’ll end up with 20-50 high-value keywords—this is your target keyword pool.

Step 4: Analyze Competitor Content Strategy (2 hours)

For each high-value keyword, click through to top-ranking pages and answer these questions:

• What type of content is it? (article, product page, tool, video)
• How long is the content? (word count, number of pages)
• What’s the content structure? (table of contents, FAQ, charts)
• What’s the backlink situation? (how many backlinks? from which sites?)
• User engagement? (comments, shares, estimated time on page)

Record this information. You’re looking for: what competitors do well (you can learn) and where competitors fall short (this is your opportunity).

For example, you discover your competitor’s “valve selection guide” article is comprehensive but lacks a downloadable calculation tool. You can create an online selection calculator paired with an article—suddenly the experience gap widens.

Step 5: Create Content Plan (1 hour)

Based on the first 4 steps’ analysis, create your upcoming content plan.

I recommend using a priority matrix:

Repeat this process monthly. Competitors change, keyword popularity shifts, and your content strategy needs to adjust accordingly.

After these 5 steps, you’ll have a very clear answer to “what content should I create.” No more guessing—decisions backed by data.

Conclusion

After all this, it comes down to one sentence: competitor analysis is the highest-ROI investment in SEO.

You don’t need to make mistakes yourself—competitors already made them for you. You don’t need to guess directions—competitors already pointed them out.

I’ve seen too many teams busy creating content daily but never looking up to see what’s happening around them. They write articles nobody searches for, rankings don’t improve, traffic doesn’t grow, then blame SEO for being useless.

It’s not that SEO doesn’t work—it’s that the method doesn’t work.

This 5-step process—you can run it this weekend. Use SEMrush’s 14-day trial, export competitor keyword data, filter 20 high-value keywords, and create content around them next month.

In SEO, direction matters more than effort. Competitive analysis is the map that helps you find the right direction.

Related Articles

• SEMrush Competitor Analysis in Practice: From Keyword Discovery to Execution - Part 5 of this series, deep dive into SEMrush tool operations
• Keyword Batch Generation: Content Planning Strategies for Programmatic SEO - Part 2 of this series, how to produce keywords at scale
• Programmatic SEO Data Quality Monitoring: Content Health Check Practical Guide - Part 4 of this series, ensuring content quality

14 min read · Published on: Apr 25, 2026 · Modified on: Apr 25, 2026

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