List dedupe
Remove Duplicates From a List Online
Clean comma-separated lists, pasted spreadsheets, tags, IDs, and short item lists. This preset starts with comma splitting and trims extra spaces automatically.
List dedupe
A list dedupe page for comma-separated and pasted data
Comma splitting and trimming are preselected
The list preset treats comma-separated values as items and trims outer spaces, so 'apple' and ' apple' match as the same value.
Works beyond comma lists
If the pasted data looks tab-separated or newline-separated, the delimiter suggestion helps switch formats without manual guessing.
Designed for list cleanup
Paste a list
Start with comma-separated values, then accept delimiter suggestions for tabs or newlines.
Trim spacing
Spaces around items are ignored by default so 'apple' and ' apple' match.
Export clean values
Copy the unique list or download it as a TXT file.
List dedupe FAQ
Can it handle tab-separated lists?
Yes. Paste the data and use the delimiter suggestion, or choose Tab in the delimiter control.
Does it change my item text?
Only enabled cleanup options are applied. The list preset trims outer whitespace to avoid accidental duplicates.
Popular tools
Open the duplicate remover for a specific task
These pages use the same browser-based tool, with presets and guidance tuned for common duplicate-removal tasks.
Duplicate remover
Duplicate Remover Online
Paste text, lists, or file contents and remove repeated items in your browser. Start with line deduplication, then adjust delimiters, sorting, case handling, or duplicate-only output when needed.
Line dedupe
Remove Duplicate Lines Online
Clean repeated lines while preserving the original order. This preset is tuned for newline-separated text, logs, code snippets, and pasted lists.
TXT and CSV
Remove Duplicates From TXT or CSV Files
Drop or upload a TXT, CSV, log, Markdown, or JSON text file and dedupe its contents locally in your browser.