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Remove duplicate lines
Delete duplicate lines from a list instantly while keeping the original order. Options for case-insensitive matching, trimming and empty lines.
🔒 Your text never leaves your browserHow to use the remove duplicate lines
- Paste your list, one item per line.
- Choose options like ignore case or remove empty lines.
- Copy the cleaned list; the counter shows how many duplicates were removed.
About this tool
Paste a list — emails, keywords, URLs, product SKUs — and every repeated line is removed, keeping the first occurrence in its original position. Tick “Ignore case” to treat “Apple” and “apple” as the same.
FAQ
Does it keep the original order?
Yes. The first time a line appears it is kept in place; later copies are removed.
Can I dedupe an Excel column?
Yes — copy the column, paste it here, then paste the result back into Excel.