Does order stay the same?
Yes. The first occurrence is kept and later duplicates are removed.
Text tool
Duplicate Line Remover
Remove duplicate lines from lists while preserving the first occurrence order.
Common use cases
- Clean copied notes and prompts.
- Sort, replace and deduplicate text lists.
- Prepare content for docs and development tasks.
Example input
json
JSON
formatter
json
repair
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TextFreeFAQ
Can matching ignore case?
Yes. Use Case-insensitive Unique to treat JSON and json as the same value.
Are blank lines included?
Blank lines are ignored.