Remove Duplicate Lines
Paste text and remove duplicate lines instantly. Optionally sort lines or trim whitespace.
How to Use
- Paste your list into the input area — one item per line for best results.
- Choose your options: case-sensitive or case-insensitive matching, trim whitespace, sort the output alphabetically.
- Copy the deduplicated list. The tool preserves the first occurrence of each item by default.
Frequently Asked Questions
- Does it preserve original order?
- Yes — by default, the first occurrence is kept and subsequent duplicates are removed. Enable sorting to reorder alphabetically.
- Is matching case-sensitive?
- You can choose. Case-insensitive mode treats 'Apple' and 'apple' as duplicates. Case-sensitive treats them as different.
- Can I remove duplicates from CSV data?
- For structured data, use the CSV to JSON converter first, or ensure each line is a complete record.