Line Numberer

Add sequential line numbers to text with configurable starting values and separators.

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About Line Numberer

Line Numberer adds sequential line numbers to text lines with customizable starting offset, zero-padding, and separator characters.

How to use Line Numberer

  1. Paste multi-line text into input pane.
  2. Set line numbering options: start index (e.g. 1), increment step, and separator (e.g. ": ").
  3. Select zero-padding width if desired.
  4. Click Add Line Numbers to process text.

Examples

Input: alpha beta Output: 1: alpha 2: beta

FAQ

Can I skip blank lines when numbering?

Yes. You can toggle whether empty lines increment the line number counter or remain unnumbered.

Can I remove existing line numbers from text?

Yes. The tool includes a Strip Line Numbers mode to clean numbered code pastes.