What you can do with line tools
- Clean up email or customer lists: trim spaces, remove empty lines and duplicates.
- Sort keyword lists alphabetically, naturally or by length.
- Prepare data for code or SQL: add quotes and commas with prefix and suffix, or join lines into one comma-separated line.
- Randomize the order of names, questions or test cases.
Comparing two lists? Use the text diff checker.
Frequently asked questions
How do I remove duplicate lines?
Paste your list and click “Remove duplicates”. The first occurrence of each line is kept in its original position. Tick “Ignore case” to treat “Apple” and “apple” as duplicates.
What does natural sort do?
Natural sort orders numbers inside text the way people expect: “item 2” comes before “item 10”. A plain alphabetical sort would put “item 10” first because it compares character by character.
Can I undo a change?
Yes. Click “Undo” to step back through your last changes, up to 50 steps.
Is there a limit on the number of lines?
Lists of tens of thousands of lines work instantly, because everything runs in your browser. Nothing is uploaded.