Duplicate Line Remover
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Privacy First: Your files are processed securely. Whenever possible, processing happens in your browser and files are never stored on our servers.
Scan any list of lines and remove every repeated entry, leaving only unique lines. Paste your text, click Remove Duplicates, and download the cleaned output instantly - no matter how long the list. Control how duplicates are identified: case-sensitive mode treats Apple and apple as different entries; case-insensitive mode treats them as the same. Choose to keep the first or last occurrence of each duplicate, optionally sort results alphabetically or numerically, and trim whitespace before comparing so trailing spaces do not cause false mismatches. A summary shows how many duplicates were removed. All processing runs in your browser - your data never leaves your device. No account required.
How to Use
- 1Paste your list or text with duplicate lines into the input area
- 2Toggle case sensitivity if needed (e.g. 'Apple' and 'apple' same or different?)
- 3Optionally enable Sort Result to alphabetically sort the unique lines
- 4Optionally enable Remove Adjacent Only to only deduplicate consecutive duplicates
- 5Click Remove Duplicates to process the text
- 6Copy or download the cleaned result
Features
- Removes all duplicate lines or only adjacent duplicates (selectable)
- Case-sensitive and case-insensitive matching modes
- Optional alphabetical sort after deduplication
- Whitespace-trimming before comparison (optional)
- Line count before and after deduplication
- 100% browser-based
Frequently Asked Questions
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