Duplicate Line Remover & Line Sorter

Remove duplicate lines from text and lists, with case-sensitive options and alphabetical/length sorting.

About this tool

Clean and organize large text lists, emails, keywords, and code items by removing duplicate lines and sorting with precision.

How to use this tool

  1. Paste your list into the text area.
  2. Configure case sensitivity and empty line preferences.
  3. Click Remove Duplicate Lines or choose a sorting order.

How it works

Splits text into line arrays and filters using an in-memory Set data structure, tracking exact removal counts.

When to use this tool

  • Deduplicating keyword lists for SEO campaigns.
  • Cleaning email recipient lists before sending newsletters.
  • Sorting inventory SKU lists alphabetically.

Frequently asked questions

Is there a limit on how many lines I can clean?

The tool easily handles tens of thousands of lines in browser memory.

Limitations

Large files (>10MB) may depend on browser memory limits.

Privacy

No list data is ever transmitted to a server.