URL to Domain Extractor

A backlink export from Ahrefs, Semrush or Majestic gives you one row per linking page. If a single domain links to your site from a hundred different posts, that domain shows up a hundred times. For link-equity analysis, that's the right granularity. For outreach planning, it's the wrong one — you don't want to email the same site editor a hundred times, you want to email them once. Collapsing the URL list to a unique domain list is the small data-cleaning step that turns a raw export into a usable prospect file.

The same problem appears in analytics — a referrer report with full URLs is hard to skim, the same report grouped by domain tells the story instantly. And in security work, suspicious traffic logs are easier to triage when you can see "five hundred requests from twenty unique domains" rather than five hundred individual URLs.

Root domain (example.com) is the unit a person owns. It treats blog.example.com, shop.example.com and example.com as one entity. Use this for outreach lists, backlink-source counting and competitive overlap analysis.

Full hostname (sub.example.com) is the unit a server lives on. It treats every subdomain separately. Use this when subdomain matters editorially — for example, when a media network runs each publication on its own subdomain with independent editorial teams.

Getting the choice right up front saves a re-export later. The toggle in the tool above lets you flip between the two without changing your input.

Converting a URL list to unique domains usually reduces the row count by 60-90%. A backlink export with 50,000 rows commonly collapses to 5,000-10,000 unique referring domains. That's the real size of your outreach universe, and it's the number that should drive your campaign planning, not the inflated URL count.

From there, the workflow is straightforward: dedupe by domain, score each domain (DR, traffic, topical relevance), filter to the prospects worth contacting, and find a contact email. The first two steps happen in this tool; the rest is your CRM and your outreach platform. The point is that the cleanup step — turning a noisy URL list into a clean domain list — is the gating step. Skip it and your outreach platform sends ten emails to the same person.