Keyword Cannibalization Checker - Free Tool

A keyword cannibalization checker shows you which pages on your own site compete for the same search term. Enter your domain and a list of keywords, and this free tool scans your pages, scores how strongly each one targets each keyword, and flags overlaps so you can decide what to merge, redirect or rewrite.

What Is Keyword Cannibalization in SEO?

Keyword cannibalization happens when two or more pages on the same website target the same keyword and the same search intent, so they compete with each other in search results. Instead of one strong page, you end up with several weaker ones.

Here is a simple example. A shoe store publishes a category page called Running Shoes, a blog post called Best Running Shoes for Beginners and a second post called Top Running Shoes This Year. All three use the phrase running shoes in the title and main heading. Google has to guess which page deserves to rank, and it may swap them from week to week.

The damage usually shows up in four ways:

• Links and internal anchor text are split across several URLs instead of building one strong page.
• The wrong page ranks, such as a blog post where you wanted a product or category page.
• Rankings flip between URLs, which makes results hard to track and improve.
• Clicks are divided, so no single listing earns the traffic it could.

Cannibalization is not a penalty from Google. It is a loss of focus. Two pages ranking for one keyword is also not always a problem: if one page teaches and the other sells, they may serve different intent and both deserve to rank. The real trouble starts when pages overlap in both keyword and purpose.

How to Use the Keyword Cannibalization Checker

You need only a public domain and a short keyword list, and the results appear on the same page. Follow these steps.

1. Type your site in the Domain field, for example example.com. Pasting a full address that starts with https also works, but the scan covers the whole site, not one folder.
2. In Keywords to Check (one per line), enter each target keyword on its own line. The sample text shows seo tools, free seo checker and keyword research. Keep the list to about 10 keywords per run for the cleanest results.
3. Click Check Cannibalization. The button changes to Checking... while your pages are scanned, so wait for it to finish.
4. Read the Results for line and the line that says how many pages were scanned and where the page list came from.
5. For each keyword, review the number of matching pages, each page address, its title, its score and its count of occurrences in the body.
6. Read the message under each keyword. It tells you whether several pages compete or whether no page targets the term.
7. Open each listed URL in a new tab to compare titles, headings and content before you decide what to change.

Worked Example: Checking Two Keywords on One Site

Say you run example.com and enter two keywords: seo tools and free seo checker. The numbers below are illustrative, but the layout matches what you will see.

The results header reads Results for example.com, followed by a line such as 38 pages scanned. Under seo tools, the tool lists 3 matching pages. Your /seo-tools category page shows a score of 78 and 21 occurrences in the body. A blog post titled Best SEO Tools for Small Sites shows a score of 61 and 14 occurrences. The home page shows a much lower score with 4 occurrences. Because several pages match, you also see the message suggesting consolidation, redirects or canonical tags.

Here is how to read that. The category page is clearly the intended target. The blog post is the real competitor, because the keyword appears in its title and its body is dense with the phrase. The home page mention is normal, since a site about SEO tools will say so on its front page.

The fix is to leave the category page alone and reposition the blog post. Change its title and main heading to a narrower angle, such as How to Choose SEO Tools for a Small Site, trim repeated mentions of the exact keyword, and add an internal link from the post to the category page. Under free seo checker, one page matches and no warning appears, so nothing needs to change there.

How Do You Read the Results and Fix Cannibalization?

Compare the scores and the occurrence counts for each keyword, then match the pattern to a fix. A higher score means a page targets the keyword more strongly, based on where the keyword appears on the page and how often.

Merge pages and use a 301 redirect

When two pages say nearly the same thing, combine the best content into the stronger URL and redirect the weaker one with a 301. Google's Search Central documentation describes a 301 as a permanent move, which passes the old page's signals to the new address. Update internal links so they point straight to the surviving page.

Add a canonical tag

Use a canonical tag when both pages must stay live, such as a filtered product list and its main category. The tag points to the preferred URL. Treat it as a strong hint rather than a command, because search engines may choose differently if the pages look too different.

Rewrite one page for a different intent

If a page serves a different need, change its title, main heading and opening paragraph to match a more specific query. A guide can target a how-to phrase while the category page keeps the broad term. The keyword intent classifier helps you confirm whether two phrases are informational, commercial or transactional.

Fix your internal links

Point internal links that use the main keyword as anchor text at the page you want to rank. Links from the competing page to your preferred page are a quick, low-risk first step.

Who Should Use a Keyword Cannibalization Checker?

Anyone who publishes more than a handful of pages on related topics benefits, because overlap grows quietly over time. Typical situations include:

• Blog owners with years of posts who suspect several articles cover the same topic.
• Ecommerce teams whose category pages, product pages and buying guides all chase the same product term.
• Agencies auditing a new client's site before planning content.
• Writers who want to confirm the site does not already cover a topic before drafting a new post.
• Site owners after a redesign or migration who want to catch duplicate targeting introduced by new templates.

Best Practices, Common Mistakes and Troubleshooting

Treat the report as a shortlist of pages to review, not a final verdict. A few habits make it far more useful.

• Assign one primary keyword per page. A simple spreadsheet of URL and target keyword prevents most overlap before it starts.
• Confirm with real performance data. In Google Search Console, open the Performance report, filter by a query, then view the Pages tab. If two URLs both earn impressions for that query, the conflict is real.
• Check intent before merging. Do not combine a tutorial and a product page just because they share a phrase.
• Track the result. After a fix, use the keyword position checker to watch whether the surviving page climbs.
• Review heavy repetition. The keyword density checker shows how often a phrase appears on one page, which helps when you rewrite a competing post.
• Support differentiated pages. Related terms from the LSI keyword generator give a retargeted page its own vocabulary.

If the tool shows an error

• Please enter a domain name or at least one keyword: both fields are required.
• That domain is not reachable as a public address: use a live public domain, not a local or private address.
• Could not reach the domain or discover any pages: make sure the site is online, loads over the web without a login, and links to its pages from the home page or lists them in a sitemap.

If a keyword you target shows no matches

Try a shorter version of the phrase, since long exact phrases appear less often in natural writing. Also check that the page is reachable from your sitemap or home page, because pages the scan never finds cannot be scored. Pages that build their text only after loading may also show low counts.

What Are the Limits of This Check?

The checker looks at on-page signals: the title, the main heading, the meta description and how often the keyword appears in the body text. It does not read live Google rankings, clicks or impressions, so it shows where your pages could conflict rather than where they do conflict.

The scan also covers a limited set of pages. It uses your sitemap when one is available and otherwise follows links found on your home page, and the results line tells you which source was used. On a large site, only part of your pages may be checked, and a sitemap that only points to other sitemaps may not be followed. Finally, this tool is built for organic pages. Cannibalization in Google Ads, where your own ad groups bid against each other, needs a review inside your ad account.

Used well, this keyword cannibalization checker gives you a clear list of pages that overlap and a sensible order for fixing them. Enter your domain and keywords above, run the check, and start with the keyword that has the closest scores. If you also need fresh targets for retargeted pages, browse the keyword research tools collection, and compare options with the keyword difficulty checker.