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Duplicate Domain Remover

Reduce a list of URLs to one entry per domain.

SEO Tools Free, no sign-up Runs in your browser

A mixed list is fine. One entry per domain is kept.

Root matching already ignores www, so that box only changes anything when hostnames are matched exactly.

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About the Duplicate Domain Remover

Duplicate Domain Remover takes a list where the same site appears many times and reduces it to one entry per domain.

This is the standard first step on a backlink export. A list of fifty thousand links usually represents two or three thousand actual sites, and almost every question worth asking is about the sites rather than the links. Reducing to unique domains turns an unusable export into a list somebody can work through.

The judgement call is what counts as the same domain. By default subdomains are collapsed, so blog.example.com and shop.example.com are both example.com, which is what you want for outreach because they share an owner. For a technical audit you may want them kept apart, so that is a switch.

Which entry survives is also a choice: the first occurrence, the shortest URL, which is usually the homepage, or the one with the shallowest path. Shortest is the sensible default when the output is an outreach list.

Nothing you paste leaves your browser. There is no upload, no log and no account, which makes it safe to analyse a staging site or an unpublished draft.

How to use the Duplicate Domain Remover

  1. Paste your URLs or domainsOne per line; a mixed list is fine.
  2. Choose how domains are matchedCollapse subdomains or keep them separate; strip www or not.
  3. Choose which entry to keepThe first seen, the shortest URL, or the shallowest path.
  4. Copy or downloadThe deduplicated list, with a count of what was removed.

Features

  • One entry per domain from any list of URLs
  • Subdomains collapsed into the root domain, or kept separate
  • Multi-part suffixes such as .co.uk handled correctly
  • Choose which entry to keep: first, shortest or shallowest
  • Shows how many entries were removed and how many domains remain
  • Optional count of how many URLs each domain had
  • Runs entirely in your browser

Who uses this tool

The duplicate domain remover is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:

  • Reducing a backlink export to referring domains
  • Building an outreach list from a crawl
  • Counting how many sites link to you rather than how many links
  • Cleaning a prospect list before import
  • Preparing a competitor's link profile for review

Frequently asked questions

Are subdomains treated as the same domain?

By default yes, because blog.example.com and shop.example.com usually share an owner, which is what matters for outreach. You can turn that off for a technical audit.

Which URL is kept for each domain?

Whichever you choose: the first one in the list, the shortest URL, or the one with the fewest path segments. Shortest usually gives you the homepage, which is what outreach wants.

Does it handle .co.uk properly?

Yes. Multi-part public suffixes are recognised, so example.co.uk is the root domain rather than co.uk.

How is this different from the URL Deduplicator?

That one removes the same URL appearing twice. This one removes the same domain appearing twice, keeping a single URL for each site. Different jobs.

Can it show how many links each domain had?

Yes, as an option. That count is often the most useful column in the result.

Is my list uploaded?

No. Everything happens in your browser.

If the duplicate domain remover is not quite what you need, these other free tools solve closely related problems.

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