Line dedupe
Paste a list, remove duplicate lines — first occurrence order is always preserved.
- Lines before
- Lines after
- Duplicates removed
Before
After
How to use
- Paste your list into the box above, one item per line.
- By default, matching is case-sensitive: “Apple” and “apple” are treated as different.
- Enable “Ignore letter case” to fold case when comparing, then dedupe and copy the result.
Example
Input
apple Banana apple APPLE Banana
Output
apple Banana APPLE
Case-sensitive by default: “apple”, “APPLE” and “Banana” duplicates were removed, keeping the first of each.
Scope and common mistakes
- Lines are compared after trimming leading/trailing whitespace on each line; empty lines are kept as-is (use the text cleaner to remove them first).
- First-occurrence order is always preserved — lines are never sorted.
- “Ignore letter case” folds case per language rules; it does not normalize accents or Unicode forms (é ≠ e).
- Emoji and combined characters are compared as whole characters, not by code points.
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