Competitor Website Keyword Analysis: A Step-by-Step Guide

You publish something, wait three months, and it ranks on page four. Meanwhile, a competitor you've never heard of is sitting in position one for the exact term you care about. You go to their site — it's nothing special. The writing isn't better. The product isn't better. But they're getting the traffic and you're not.

The difference is almost always content coverage. They have pages targeting keywords you haven't touched yet. This guide shows you how to find every one of those keywords and decide which ones to go after.

What You're Actually Looking For

Competitor keyword analysis isn't about spying. It's about mapping the search landscape your buyers are moving through — and finding the spots where competitors have planted a flag but you haven't.

There are three categories worth separating before you start:

• Keywords competitors rank for that you don't. These are gaps — topics you haven't written about that are already driving traffic to someone else.
• Keywords you both rank for, but they outrank you. These are competitive opportunities where the topic is covered but your content needs work.
• Keywords you rank for that they don't. Worth knowing so you can defend them, but not the priority in this exercise.

Most of your energy should go to the first category. The gap list is where you find the fastest wins.

Step 1: Identify Your Real Competitors

Your SEO competitors aren't always your business competitors. A SaaS tool you've never heard of might be ranking for the exact keywords your buyers use, even if they're in a different niche.

Start with the keywords that matter most to you. Search them. See who's showing up consistently in positions one through five. These are your real SEO competitors — the sites you need to analyze.

Make a list of five to ten domains. Mix in:

• Direct business competitors
• Niche media sites or blogs ranking for your terms
• Comparison or review sites showing up in your searches

Don't assume you already know who they are. Search the terms your buyers actually use and see what comes up. You'll often find competitors you didn't know existed.

Step 2: Pull Their Keyword Profile

You need a tool for this. There's no way to reverse-engineer a competitor's keyword rankings from the outside without one. The main options:

• Ahrefs — Site Explorer → enter competitor domain → go to "Organic keywords." You'll see every keyword they rank for, their position, estimated traffic, and keyword difficulty.
• Semrush — Same workflow under "Organic Research."
• Moz — Similar, though the keyword database is smaller.
• Ubersuggest — A cheaper option with a smaller dataset, but workable for smaller budgets.

Enter each competitor domain and export their full organic keyword list. Filter to keywords where they're ranking in positions one through twenty — anything beyond that is rarely worth targeting based on their performance.

You're looking at raw data at this stage. Don't analyze yet. Just pull and export.

Step 3: Find the Gaps

Now compare their keyword list against your own. This is the core of competitor keyword analysis.

In Ahrefs, there's a dedicated feature for this: Content Gap (under the Competitive Research section). Enter your domain plus two or three competitor domains, and it returns keywords those competitors rank for that your site doesn't. Semrush has the same feature under Keyword Gap.

If you're doing this manually with exports, use a spreadsheet:

1. Export your organic keywords into column A
2. Export a competitor's organic keywords into column B
3. Use a VLOOKUP or a simple filter to find terms in column B that don't appear in column A

Do this for each competitor on your list. Combine the results into one master gap list.

At this point your list might have thousands of keywords. That's normal. The next step is cutting it down.

Step 4: Prioritize What to Target

Not every gap is worth filling. Run your gap list through these filters:

Relevance. Does this keyword describe something your buyer would actually search? If a competitor is ranking for "free template" and you don't offer free templates, skip it.

Search volume. Use your keyword tool to pull monthly search volume. Ignore anything below roughly fifty searches per month unless it's highly commercial. But don't ignore long-tail terms just because they're low volume — they often convert better.

Difficulty. Keyword difficulty scores (Ahrefs KD, Semrush KD) estimate how hard it is to rank. Under 30 is generally accessible. Between 30 and 50 you'll need solid content and some links. Over 60 is a longer play. Focus your first pass on sub-40 keywords where your gap exists.

Intent match. Is the keyword informational (someone learning), commercial (someone comparing options), or transactional (someone ready to buy)? Match your content format to the intent. A buyer comparing options needs a different page than someone learning a concept.

After filtering, aim for a prioritized list of twenty to fifty keywords you'll actually act on. A full keyword competitive analysis typically surfaces more opportunities than any team can execute immediately — so stack-ranking matters.

Step 5: Map Keywords to Content

Each keyword on your priority list needs a home — a page specifically built to rank for it.

For each keyword, decide:

• Is there an existing page that could be updated to target this? If so, update it.
• Does this need a new page? If so, what type — a blog post, a landing page, a comparison page, a use-case page?

Group related keywords together. If five keywords on your list are variations of the same topic, one well-structured page can target all five.

A simple spreadsheet works: keyword, search volume, difficulty, intent, assigned URL (existing or planned), and priority tier. This becomes your content roadmap.

Step 6: Analyze the Ranking Pages Before You Write

Before writing anything, look at the pages actually ranking for each target keyword. Go to Google, search the keyword, and open the top three to five results.

Note:

• Format — Is it a guide, a list, a comparison table, a product page?
• Length — Roughly how long is it?
• What they cover — What headings, subtopics, and questions do they address?
• What they miss — Where are the gaps in their treatment of the topic?

Your goal isn't to copy them. Your goal is to understand what's needed to be competitive, then do it better in at least one specific way — more depth on a subtopic, a more useful example, a cleaner explanation.

This is the difference between content that ranks and content that sits. See how competitors exploit keyword gaps and you'll quickly notice they're often not doing anything remarkable — they just showed up with a decent page when no one else did.

Putting It Together as a Repeatable Process

This isn't a one-time project. Competitors publish new content. Rankings shift. New keywords emerge. The sites that compound organic traffic do this analysis every quarter, not once.

Build a simple rhythm:

• Pull competitor keyword data quarterly
• Update your gap list
• Add new priorities to your content calendar
• Track rankings for pages you've already published

For teams that want to scale this without doing every step manually, tools like Rankfill can do the competitor mapping and gap analysis automatically, surfacing your full opportunity set and estimating traffic potential across every keyword you're missing.

Whether you do it manually or with tooling, the keyword research competitor analysis process is the same: find who's outranking you, extract what they rank for, identify what you're missing, and build the content.

FAQ

How many competitors should I analyze? Three to five is usually enough to surface most of the relevant gaps. Beyond five, you start seeing heavy duplication. Start with your closest two or three, then add one or two broader players if your gap list feels thin.

What if my competitor has thousands of keywords I don't rank for? That's normal. You're not trying to match them keyword for keyword. Filter aggressively by relevance and difficulty first, then work through the list in tiers over time.

Do I need a paid tool, or can I do this free? You need at least a basic paid tool for any serious analysis. There's no reliable free way to pull a competitor's full keyword list. Ahrefs and Semrush both offer trial access. Ubersuggest has a limited free tier. Budget for one of these — it's worth it.

How long until I see results after publishing new content? Typically three to six months before new content starts ranking consistently. Some pages move faster, especially for low-competition keywords on domains with existing authority.

Should I focus on keywords where competitors rank #1, or where they rank #10? Both can be worth targeting, but for different reasons. Keywords where they rank low (#8-20) suggest the topic isn't well-covered — easier to beat. Keywords where they rank #1 require a serious content investment but offer more traffic upside if you can crack them.

What if I'm targeting a keyword and multiple competitors already have strong pages? That's a signal you need a genuinely better page — not just "longer," but more useful, more specific, or covering an angle they've missed. If you can't identify what you'd do better, it's worth deprioritizing that keyword until you can.