ToolList Cleaner & Sorter
Remove duplicates, sort, filter, and clean any list in seconds. Perfect for email lists, keywords, and data cleanup.
Cleaned List
How to Clean a List Online
1. Paste your list into the input box (one item per line).
2. Select the operations you need: remove duplicates, trim whitespace, sort, filter, add prefix/suffix, or change case.
3. Click "Clean List" and copy or download the result.
Online List Cleaner & Deduplicator
Clean, sort, and deduplicate any text list instantly. Whether you have email addresses, keywords, product names, or any line-separated data, this tool removes duplicates, sorts items, filters content, and transforms text — all in your browser with no data uploaded anywhere.
Features
- Remove duplicates: Case-sensitive or case-insensitive deduplication
- Trim whitespace: Remove leading/trailing spaces from every line
- Remove empty lines: Strip out blank lines that clutter your data
- Sort: Alphabetical (A-Z, Z-A), by length (short/long first), or random shuffle
- Add prefix/suffix: Wrap items in quotes, add bullet points, or prepare SQL values
- Filter: Keep only items containing specific text, or exclude items by keyword
- Change case: Convert to lowercase, UPPERCASE, or Title Case
- Join as CSV: Combine all items into a comma-separated string
Use Cases
- Clean email lists before importing into Mailchimp, SendGrid, or CRM tools
- Prepare keyword lists for Google Ads, SEO tools, or content briefs
- Format data for SQL IN clauses: add single quotes and join with commas
- Sort and organize tag lists, category names, or product catalogs
- Remove spam entries and empty lines from form submissions or CSV exports
FAQ
How does duplicate detection work? Each line is compared as a whole. In case-insensitive mode, "Apple" and "apple" are treated as duplicates and only the first occurrence is kept.
Can I clean lists with thousands of items? Yes. The tool runs in your browser and handles lists with 50,000+ items efficiently.
How do I format items for SQL? Add ' as both prefix and suffix, then use "Join as CSV" with comma separator. You'll get: 'item1','item2','item3'
Is my data stored anywhere? No. Everything runs locally in your browser. Your list is never sent to any server.