Skip to main content
dubinity

Productivity & Everyday

Remove Duplicate Lines

Strip repeated lines from a list, ignoring case and spacing if you want, keeping the first or last copy.

  • Runs in your browser
  • Works on mobile
  • In: TEXT
  • Out: TEXT
Loading the tool…

Your files and text are processed on your own device, inside this page. Nothing is uploaded to Dubinity or stored, and closing the tab discards it. How privacy works

About Remove Duplicate Lines

Removes duplicates from a list of emails, URLs, IDs or anything else one per line, and tells you how many went.

Comparison can ignore capitals and surrounding spaces, so "Aisha@Example.com" and " aisha@example.com " count as the same entry. You choose whether the first or the last occurrence survives.

How to use it

  1. 1Type or paste your text, or open a file.
  2. 2Choose any options - the result updates as you type.
  3. 3Copy the result or download it as a file.

Questions

Was this tool helpful?

  • Sort Lines

    Sort a list alphabetically, naturally (file2 before file10), by length, reversed or shuffled.

    TEXT
    Runs in your browserOpen tool
  • Text Cleaner

    Fix text copied from a PDF or email: extra spaces, broken line breaks, invisible characters, stray HTML.

    TEXT
    Runs in your browserOpen tool
  • Duplicate Content Checker

    Compare two texts and see how much they share, with the repeated passages highlighted in both.

    TEXT
    Runs in your browserOpen tool
  • Word Counter

    Count words, characters, sentences and paragraphs as you type, with reading time and SMS segments.

    TEXT
    Runs in your browserOpen tool
  • Time Zone Converter

    Convert a date and time in one city or time zone into many others at once, with daylight saving handled correctly.

    DATE · TIME · Time zones
    Runs in your browserOpen tool
  • Stopwatch

    An accurate online stopwatch with hundredths of a second, lap and split times, and a CSV export of your laps.

    Start, lap, stop
    Runs in your browserOpen tool