Email normalizer
Lowercase and trim an email list in your browser. Skip duplicates and download a clean list. Nothing is uploaded.
Paste emails, then Normalize list.
How to use the Email normalizer
- Paste emails or open a CSV with an email column.
- Click Normalize list. Duplicates after lowercase are dropped.
- Download the clean addresses, then hash them on a hasher page if you need SHA-256.
Normalize before you hash
Meta and Google document trim plus lowercase. Run that here if you want to inspect the list before hashing. Hashing is a separate click on the audience hasher pages.
Nothing is uploaded
Cleanup stays in this tab.
Email normalizer FAQ
Does this hash?
No. Output is normalized emails.
Are Gmail dots removed?
No. This page only trims and lowercases. Hash after if the ad platform wants SHA-256.