Drop lists, registrar exports, emails and spreadsheets all format domains differently. Paste anything here and the cleaner extracts valid domain names, lowercases them, strips protocols and paths, removes duplicates and lets you filter by extension, length and character type before exporting.
How to use the Domain List Cleaner
- Paste text containing domains.
- Set filters: extensions, max length, no hyphens, no digits.
- Choose a sort order.
- Copy or download the clean list.
How it works
A pattern match finds hostnames, then each is normalised to its registrable domain (handling suffixes such as .co.uk). All processing happens in your browser.
When to use it
- Preparing bulk checks
- Cleaning registrar exports
- Building watch lists
Pro tips
- Run the cleaned list through the Bulk Domain Checker next.
Frequently asked questions
Is there a size limit?
It handles tens of thousands of lines in modern browsers.
Does it keep subdomains?
Subdomains are reduced to the registrable domain unless you switch that off.