URL Parser
Break a URL down into its protocol, host, path, query parameters, and more.
Email Normalizer
Normalize email addresses by lowercasing, stripping +tags, and removing Gmail dots, then detect duplicates.
Input data is processed in your browser
Data is never sent to a server
Tool
What is the Email Normalizer?
The Email Normalizer converts a list of inconsistently formatted email addresses into a single, comparable format. It merges addresses that point to the same inbox but look different as strings — differences in letter case, or Gmail’s “+tag” and dot conventions. It’s useful for cleaning up CRM data, mailing lists, or user databases before checking for duplicates.
How to Use
- Paste email addresses into the input field, one per line.
- Choose which normalization rules to apply: lowercase, remove +tag, Gmail normalization, and deduplication.
- Click "Normalize" to see the normalized list along with valid, duplicate, and invalid counts.
- Click "Copy Result" to copy the output to your clipboard.
FAQ
Is this tool free?
Yes, completely free.
What is Gmail normalization?
Gmail ignores dots (.) in the username and treats googlemail.com and gmail.com as the same address. Enabling this option merges both into a single normalized address.
What is a +tag (plus alias)?
Addresses like user+newsletter@example.com use a "+" followed by a tag to route mail to the same inbox under different labels. Enabling this option strips everything after the "+" to normalize the address.
How are invalid addresses handled?
Lines that aren't valid email addresses (missing "@", malformed domain, etc.) are listed as invalid and excluded from the output.
Is my data sent to a server?
No. All processing happens in your browser — your list of email addresses is never sent anywhere.
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