Line Numbering Tool

What is a Line Numbering Tool?

Add line numbers to text lines (e.g. `01. Line`) or strip existing line numbers from numbered lists. Customize starting index, zero padding, and separator symbols.

Why Use This Tool?

Code Snippets & Docs: Add line numbers to code blocks for code reviews and printed documents.
Legal & Contract Editing: Format numbered clause lists for contracts and legal briefs.
Cleaning Copy: Strip unwanted line numbers from copied code or text.

How to Use

Choose "Add Line Numbers" or "Strip Line Numbers".
Configure options (Start index, Zero padding length, Separator like `. ` or `: `).
Copy the formatted output.

Real Working Example

Input Text:

First item
Second item

Output Result:

01. First item
02. Second item

Important Technical Details & Features

Zero Padding Customization: Pad numbers with leading zeros (e.g. `001.`, `002.`).
Regex Number Stripper: Strips leading digits, dots, and colons cleanly when in Strip mode.
Local Memory Execution: Zero network transmission.

Related Text & Developer Utilities

Sort Lines: Sort list items.
Remove Duplicate Lines: Deduplicate lines.
Text Statistics: Count lines and characters.

Frequently Asked Questions

Can I start numbering from a number other than 1?

Yes, set the "Start Number" parameter to any integer.

Can I strip existing line numbers from text copied from a PDF?

Yes, switch to "Strip Line Numbers" mode.

Can I customize the separator symbol?

Yes, use custom separators like ". ", ") ", ": ", or "| ".

Is it free?

Yes, 100% free.

What is the main function of Line Numbering Tool?

Add or strip line numbers from text with customizable starting index, padding zeros, and separator symbols. This tool processes line numbering data 100% locally inside your web browser.