Remove Duplicate Lines
TEXT & DATA
Remove Duplicate Lines
Remove repeated lines while preserving first-seen order.
UNDERSTAND YOUR RESULT
How it works
Remove repeated lines while preserving first-seen order.
THE CALCULATIONkeep the first occurrence of each exact line
Using this calculator
Enter your text. keep the first occurrence of each exact line.
What to keep in mind
Processing stays in this page. Inputs are not uploaded or saved. Text tools accept up to 50,000 characters.
Frequently asked questions
Are my entries saved?
No. Calculator inputs remain in the current page and are cleared when you reload or leave. The tools do not upload your entries.
Why are results rounded?
The display is rounded for readability. Calculations use unrounded intermediate values. An estimate should not be interpreted as an exact measurement.