If you’re reading this article then you may be in the situation where you’ve written several blog posts and service pages about the same topic. You’ve had very good intentions for them all to boost your authority around a certain topic and in turn improve your SEO and site metrics.
However, you’re looking at the data in the dashboards and you’re not seeing what you expected or wanted. Instead of boosting your rankings your rankings are either the same or going down.
Whats happened? Is your site broken? No, your site is fine, probably! Its quite simple, the articles and pages contain quite a lot of overlapping content, have the same intent, and similar keywords. This has Google bouncing between them, unsure which one to show. Your visibility drops—and you’ve accidentally started competing with yourself!
If merging all these pages into 1 will produce higher organic traffic then thats an issue that needs fixing as you’re missing out on traffic.
That’s keyword cannibalisation, and it can quietly undermine your SEO efforts without you realising.
Quick Example of Keyword Cannibalisation
Keyword cannibalisation happens when two or more pages on your website target the same or very similar keywords.
When this occurs, Google struggles to decide which page best matches a search query, splitting ranking signals across multiple URLs.
Example:
Let’s say you run a marketing agency and publish:
- /blog/how-to-do-keyword-research/
- /blog/keyword-research-guide/
- /services/keyword-research/
Each page uses the same phrase — keyword research — as its main keyword. Importantly these pages also have the same intent which is the killer here. Instead of one strong result, you end up with three weaker ones fighting for attention.
Why Keyword Cannibalisation Hurts SEO
It might seem like targeting the same keyword more than once increases your chances to rank — but the opposite is true.
1. Diluted Ranking Power
Each page gets a fraction of your link equity and authority, meaning none of them perform as well as a single focused page.
2. Lower Click-Through Rates (CTR)
Google might show multiple results from your site, but users often click only one. The overlap reduces traffic to your strongest content.
3. Crawl and Indexing Confusion
Search engines waste crawl budget deciding which page to prioritise, slowing indexing and sometimes ignoring your preferred page entirely.
4. Reduced Topical Clarity
Instead of being seen as an authority on one clear topic, your site appears disorganised — which affects your ability to rank for related keywords.
How to Identify Keyword Cannibalisation
Spotting cannibalisation requires a little detective work, but it’s easy once you know where to look.
1. Google Search Queries
Search your target keyword on Google using:
site:yourdomain.com "target keyword"If you see multiple URLs ranking for the same term and have the same intent, you may have cannibalisation.
2. Google Search Console
Check your Performance report. If two or more URLs appear for the same query, and impressions are split, that’s a sign of keyword overlap.
3. SEO Tools
Tools like Ahrefs, Semrush, or SE Ranking have built-in cannibalisation reports showing duplicate keyword targets and their positions.
4. Manual Spreadsheet Audit
Export all your page titles and focus keywords into a spreadsheet. Group similar terms — duplicates will stand out quickly.
How to Fix Keyword Cannibalisation
Once you’ve found overlapping pages, it’s time to consolidate and clarify.
1. Combine and Merge Content
If two posts cover the same topic and have the same intent, merge the best parts of each into a single comprehensive article.
Example:
- Combine “How to Do Keyword Research” and “Keyword Research Guide” into one stronger post. Redirect the weaker URL to the new one using a 301 redirect.
2. Differentiate Page Intent
This is a big one. A website can legitimately and harmlessly have multiple pages or posts talking around the same topic. For instance a golf website can have:
- Golf Lesson Service Page
- Blog post on how many golf lessons a beginner should have
- Blog post on how to prepare for a golf lesson
These are all around the golf lesson topic but have slightly different keyword targets, but very importantly different intents. These can be transactional or educational for instance.
3. Use Canonical Tags
If merging isn’t possible, add a canonical tag to the less important page, pointing to the main one.
This tells Google which version to prioritise.
4. Refine Internal Linking
Review internal links — make sure they point consistently to your preferred version of the page. Mixed linking signals can cause confusion.
5. Review Your On-Page Keywords
Ensure each page has a unique primary keyword. Even small changes (e.g., “SEO content writing” vs “SEO copywriting”) can help.
How to Prevent Keyword Cannibalisation
Prevention is simpler than fixing. Build a clear keyword and content strategy from the start.
1. Create a Keyword Map
Assign one primary keyword per URL and track it in a spreadsheet.
Columns can include:
- Keyword
- Search intent (informational, commercial, local)
- Assigned URL
- Status (live, draft, planned)
2. Group Keywords by Topic
Use topic clusters: create one “pillar” page for a broad keyword and link related posts as “cluster” content.
Example:
- Pillar: On-Page SEO Guide
- Clusters: Meta Tags Explained, Internal Linking Strategy, SEO-Friendly URLs
3. Review Before Publishing
Before you write a new post, search your own site for the keyword. If a page already covers it, update that instead of starting from scratch.
4. Monitor Performance Regularly
Revisit Search Console every few months. If impressions start splitting again, it’s time to revisit your keyword map.
Advanced Tip: Use Internal Linking Strategically
Internal links reinforce the relationship between pages.
If you have several posts on similar themes, link them contextually — and always ensure the anchor text supports your keyword structure.
For instance:
“Learn more in our guide to SEO-friendly URLs, which covers how short, descriptive slugs improve crawlability.”
This builds topical authority rather than competition.
Measuring Success After Keyword Cannibalisation Fixes
Once you’ve resolved cannibalisation, you can measure progress by:
- Improved rankings for the main keyword.
- Increased impressions and clicks on the consolidated URL.
- Reduced duplication in Search Console.
- Faster crawl rates and clearer indexation patterns.
Give Google a few weeks to fully process redirects and canonicals — improvements often appear gradually.
Keyword cannibalisation is common, especially as sites grow.
It’s not a penalty, but it can silently erode your visibility if left unchecked.
By regularly auditing your content, merging overlapping pages, and maintaining a simple keyword map, you’ll give Google and users a clearer path to your best material.
The fix is straightforward: one keyword, one page, one intent.
Need Help Organising Your SEO Strategy?
If managing keywords, content, and structure feels overwhelming, consider working with an SEO Service expert such as us here at Gregory Digital who can audit your site, resolve cannibalisation issues, and set up a keyword plan for future growth.
