#260 · Lists, Sorting & Lines Text Tool

Number Lines

Add automatic numbers to every line. Choose the start value, increment, numbering format, leading zeros, and empty-line behavior for clean lists or documents.

Text Input

Line numbering
start

Recent History

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How to use this text tool

  1. Paste or upload your text.
  2. Choose the processing mode and options.
  3. Run the tool, then copy or export the output.

What this tool does

This tool prefixes each line with a generated number using your chosen style and start value.

Iterate through lines, skip empty lines when selected, generate the next label, format it, and attach it before each line.

Number Lines adds prefixes only. It keeps the original line text unless trimming is enabled.

Example

Input: Apple / Banana. Output: 1. Apple / 2. Banana using dot format.

Use cases

  • Create numbered checklists
  • Prepare document outlines
  • Add line references to notes
  • Number pasted code or logs

Tips for better output

  • Use 001 format for fixed-width lists.
  • Use Roman numerals for formal outlines.
  • Skip empty lines when numbering prose sections.

Processing details

Iterate through lines, skip empty lines when selected, generate the next label, format it, and attach it before each line.

This browser-based tool processes text locally in your page. Very large files may depend on device memory and browser limits.

FAQ

How do I add numbers to every line?

Paste your lines, choose a numbering format, set the start number, and run the tool.

Can line numbering start from a custom number?

Yes. Enter any start number, such as 0, 5, or 101.

Can empty lines be skipped when numbering?

Yes. Enable skip empty lines so blank lines do not receive a number.

Can I add leading zero line numbers?

Yes. Choose the 001 format to create fixed-width line numbers.

Can I use Roman numerals or letters?

Yes. Roman numeral and alphabet numbering modes are available.

Module table

ModulePurpose
Input parserSplits and prepares text according to selected options
ProcessorIterate through lines, skip empty lines when selected, generate the next label, format it, and attach it before each line.
StatisticsShows counts, changes, quality score, and export data
ExportCopy, TXT, CSV, JSON, and print actions

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