Purpose: Strip out repeated lines from any list and see how many duplicates were removed.
Remove Duplicate Lines
The Remove Duplicate Lines tool strips repeated lines from any list, leaving only unique entries - instant cleanup for email lists, keyword sets, logs, and data.
One click to unique
Paste a list where some lines repeat and the tool returns just the distinct ones, telling you how many duplicates it removed. It can ignore case and surrounding spaces so that "Apple" and "apple " are treated as the same entry, or keep them separate if you prefer an exact match.
Where it saves time
De-duplicating email or subscriber lists prevents sending twice; cleaning keyword lists avoids skewed SEO analysis; tidying exported data removes noise before you import it elsewhere. Combine it with the Text Sorter to both order and de-duplicate in seconds. Processing is local and private.
Frequently Asked Questions
Does it keep the first occurrence of each line?
Yes. It preserves the first appearance of each unique line and removes the later repeats.
Can it ignore case and spacing when comparing?
Yes. You can treat differently cased or padded lines as duplicates, or require an exact match.
Does it tell me how many duplicates were removed?
Yes. It reports the number of duplicate lines it stripped out.
Is my list uploaded anywhere?
No. Everything is processed in your browser, so your data stays private.
Related Text Tools
Privacy-first: client-side tools process your input in your browser. Free to use, no sign-up. See our Privacy Policy and Disclaimer.