Deduplicate a line-based list while preserving the order of the first occurrence. Follow the exact input and settings below to reproduce this example. Open Remove Duplicate Text Lines.
Prepare the source text
Open Remove Duplicate Text Lines and choose Write or paste text, or upload a supported UTF-8 text file. The upload opens the editor; it does not run the tool. This example uses the exact source shown in the comparison.
Maximum input and result: 1 MB of UTF-8 text, with a 1,048,576-character input ceiling. Expanding transformations must also fit the result limit.
Use the exact example input
Apple apple Banana Apple
This text operation runs in your browser; its source and result are not sent for conversion. A draft may be kept in this browser tab when session storage is available. Clear removes the current draft; download important work before closing the tab.
Choose the settings
For the recorded example, use these settings: Match case: Off; Trim spaces at the beginning and end of each line: Off.
By default, comparison ignores letter case and preserves the first version of each line. Enable Match case to treat differently capitalized lines as separate entries. Trim lines removes surrounding whitespace before comparison and also returns the trimmed line. The remaining entries keep their original order.
The example in this guide
Verified in the i2TEXT browser workflow on November 11, 2026.
- Input
- example.txt
- Output
- remove-duplicate-text-lines.txt
- Saved result
- 12 bytes
Apply and inspect the result
Select Remove Duplicate Text Lines when the input and settings are ready. In the saved example, the result begins: "Apple".
Repeated blank lines are duplicates too. This compares complete lines rather than individual words or near-matching sentences.
Result overview shows Duplicate lines removed and the input-to-result line totals. Its duplicate count uses the same case and trimming settings as the transformation, including repeated blank lines.
Result overview distinguishes changed, unchanged and empty results. An unchanged result means the selected operation did not alter the text; an empty result can be the expected outcome of removal or extraction. Line totals include a trailing empty line; an empty result has zero lines.
Save the version you reviewed
Review the current result, then use the download icon to save a TXT file. The actual download in this example is named remove-duplicate-text-lines.txt. Copy and download use the current result, so make any final wording changes before saving. Continue to can carry the result into a compatible next tool, where you review it before running another operation.
Editing the result hides the calculated details until you run the tool again. Copy and TXT download use the edited text; return to the source and reapply the tool to refresh the report.
example.txtremove-duplicate-text-lines.txt
Common questions
Which settings produced this example?
Match case: Off; Trim spaces at the beginning and end of each line: Off.
What should I check before using the result?
Repeated blank lines are duplicates too. This compares complete lines rather than individual words or near-matching sentences.
Where is this text processed?
This text operation runs in your browser; its source and result are not sent for conversion. A draft may be kept in this browser tab when session storage is available. Clear removes the current draft; download important work before closing the tab.
Try Remove Duplicate Text Lines with your own text.
Use your own source and review the result before sharing.
