ToolNestRemove Duplicate Lines From Text
Cleaning a messy list? Our free remove duplicate lines tool deletes repeated lines from any pasted text in one click — ideal for keyword lists, email lists, URLs, and data cleanup. Optional case-insensitive matching and alphabetical sorting included.
✓ Free forever · ✓ No signup · ✓ Runs in your browser — your data never leaves your device.
How to Use the Remove Duplicate Lines
- Paste your list — one item per line — into the input box.
- Tick 'Case-insensitive' to treat 'Apple' and 'apple' as duplicates.
- Tick 'Sort A–Z' to alphabetize the cleaned list.
- Click Remove Duplicates, then copy your clean list.
Why Use Our Remove Duplicate Lines?
- One-click dedup — keeps the first occurrence of each line, preserving original order.
- Case-insensitive mode — catches duplicates that differ only in capitalization.
- Optional sorting — alphabetize the result in the same step.
- Duplicate report — tells you exactly how many lines were removed.
Frequently Asked Questions
Which duplicate is kept?
The first occurrence. Order is preserved unless you enable sorting.
What counts as a duplicate line?
Lines with identical text. With case-insensitive mode on, lines differing only in letter case also count.
Is there a line limit?
No practical limit — paste thousands of lines; it processes instantly in your browser.
Does it remove blank lines?
Blank lines are treated like any other line: duplicates collapse to one. Delete the remaining blank line manually if unwanted.
Is my list uploaded anywhere?
No — deduplication runs locally in your browser.