Dedupe Lines — Unique Text, Free | How to use and interpret results
Remove repeated lines while preserving the order of their first occurrence. Optional case-insensitive comparison is useful when consolidating an English tag list.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
Numbers stay on your device. Nothing is sent to a server.
How to use this tool
Paste one item per line and decide whether letter case should distinguish items. Inspect whitespace conventions first because raw spacing can affect line equality.
Results and examples
Separate lines Apple, apple and Apple leave two lines under case-sensitive comparison. Ignoring case retains the first Apple and reports the removed-line count.
Worked example
Separate lines Apple, apple and Apple leave two lines under case-sensitive comparison. Ignoring case retains the first Apple and reports the removed-line count.
Limitations
- Similar spellings are not merged by meaning.
- Repeated blank lines can collapse to one under the same line comparison.
Fields
| Field | Guidance and constraints |
|---|---|
| Lines | Check the unit and format displayed beside this field. |
| Treat case as equal | Check the unit and format displayed beside this field. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
Are Apple and apple merged?
Separate lines Apple, apple and Apple leave two lines under case-sensitive comparison. Ignoring case retains the first Apple and reports the removed-line count.
Will similar words be combined automatically?
Similar spellings are not merged by meaning. Repeated blank lines can collapse to one under the same line comparison.
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