ToolKitText tools
Duplicate Line Remover
Remove duplicate lines with case, trimming and sorting options.
Duplicate remover
1 lines to 1 unique lines
ToolKit makes daily utilities fast, local, and pleasant to use.
About the Duplicate Line Remover
The Duplicate Line Remover strips repeated lines out of any list or block of text, with options to ignore case, trim surrounding whitespace, sort the output and drop blank lines. What you are left with is a clean, de-duplicated list that you can copy straight back out, and you can adjust the options and re-run instantly to fine-tune the result.
It is a quick fix for cleaning up email lists, keyword sets, log lines, spreadsheet columns and any data that has accumulated duplicates over time. Instead of sorting thousands of rows and scanning for repeats by hand, you paste the list, pick the matching rules, and get a unique set in a moment — a real time-saver during data preparation.
Everything is processed in the browser, so your list never leaves your device, which matters when it contains email addresses, customer records or other details you would rather not upload. There is no account to create and nothing to install, making it a dependable step in any quick data-cleaning workflow.
Frequently asked questions
Does it remove blank lines too?
Yes. You can choose to remove blank lines along with duplicate lines using the options provided.
Is the comparison case-sensitive?
You can toggle case-sensitive mode. By default it removes exact duplicates including same-cased lines.