Text Tool
Remove Duplicate Lines
Remove duplicate lines while preserving first occurrences.
Remove Duplicate Lines
Remove duplicate lines while keeping first occurrence order.
Overview
Clean repeated line-based lists quickly without changing the order of first seen entries.
Examples
Dedupe repeated items
Input
apple
banana
appleOutput
apple
bananaKeep first occurrence order
Input
b
a
b
c
aOutput
b
a
cUse cases
- Clean API key or endpoint lists.
- Normalize bulk text inputs.
- Deduplicate exported values quickly.
FAQ
Is order preserved?
Yes. First occurrence order is preserved.
Are empty lines kept?
Yes. Empty lines are treated as regular lines.
Does it trim whitespace?
No. Matching is exact line content.
Can I copy cleaned output?
Yes. Use copy result after running.