Remove Duplicate Lines
Remove repeated lines from a list and keep the unique ones.
Lists collect duplicates quickly — repeated emails, keywords, URLs or log lines.
About Remove Duplicate Lines
Paste a list and instantly remove duplicate lines. Choose whether matching is case sensitive, trim whitespace, drop empty lines and optionally sort the result, then copy or download the unique lines. Handy for email lists, keywords, URLs and log files.
Lists collect duplicates quickly — repeated emails, keywords, URLs or log lines. Paste your list here and this tool keeps the first copy of each line and removes the rest, telling you how many it removed.
How to use Remove Duplicate Lines
- Paste your list with one item per line.
- Choose whether matching is case sensitive, whether to trim spaces, drop empty lines or sort the result.
- Copy or download the unique lines.
Key features
- Case-sensitive or case-insensitive matching.
- Optional trimming, empty-line removal and A–Z sorting.
- Shows how many lines were kept and removed.
- Handles large lists in your browser.
Common use cases
- Cleaning email or keyword lists before importing them.
- De-duplicating URLs, IDs or log entries.
- Preparing lists for spreadsheets and databases.
Frequently asked questions
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