Tool
Add Line Numbers
Prefix each line with line numbers for review, diffs, and documentation.
Text Tools
What this tool does
Add sequential line numbers to every row in pasted multiline text.
How to use
- Paste multiline text into the input area.
- Review numbered output with one prefix per line.
- Copy the numbered text for review or documentation.
Examples
Simple list
Input: alpha beta gamma
Output: 1. alpha 2. beta 3. gamma
Each line receives a sequential number prefix.
Common use cases
- Share code snippets with line references
- Prepare review notes with row labels
- Format meeting notes or bullet lists
FAQ
Does numbering start at one?
Yes. The first line is numbered 1.
Are blank lines numbered?
Yes. Empty lines still receive a line number.
Can I compare numbered versions?
Use the Text Diff tool to compare original and edited content.
Related tools
Last reviewed: 2026-05-23