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Join or Split Lines Online

Join lines with a delimiter or split text into lines

About This Tool

Join / Split Lines either merges multiple lines using a delimiter or splits a string into one item per line. Useful for lists and CSV-like text. Processing is processed locally in your browser.

How to Use

  1. Choose Join or Split
  2. Set the delimiter
  3. Paste your text
  4. Click Join or Split
  5. Copy the output

Common Use Cases

  • Turn a list into a CSV row
  • Split comma lists into lines
  • Prepare tag lists
  • Clean chat paste dumps
  • Build query parameter lists

FAQ

Q1: Is text uploaded?

No. Joining and splitting are processed locally in your browser.

Q2: What if input is empty?

The tool shows a clear empty-input tip and does not invent output.

Q3: How do I split by newline?

Use a newline as the delimiter, or paste multi-line text for join mode.

Q4: Are blank lines kept when joining?

Yes. Each line from the input, including blanks, is joined.

Q5: Can the delimiter be multiple characters?

Yes. Any delimiter string works.

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