Add Line Numbering

Line Numbering Tool

Add customizable line numbers to your text with various formatting options

Input Text

Numbering Options

Number Format:

01, 02, 03 1, 2, 3 (1), (2), (3) [1], [2], [3] 1., 2., 3. Custom

Custom Format:

Use {n} for the number

Start Number:

Skip numbering for empty lines

Numbered Output

Output Statistics

Total Lines:

0

Numbered Lines:

0

Max Digits:

0

Information

How to Use

1. Enter your text in the left panel
2. Customize numbering options:
   • Choose from predefined number formats or create your own
   • Set the starting number
   • Optionally skip numbering for empty lines
3. Click "Process" to add line numbers
4. Copy the numbered text using the copy button
5. The tool automatically adjusts padding based on line count:
   • 1-99 lines: 2 digits (01, 02, etc.)
   • 100-999 lines: 3 digits (001, 002, etc.)
   • 1000+ lines: 4 digits (0001, 0002, etc.)

FAQs

Does this tool modify my original text?

No, the original text remains unchanged in the input panel. The line numbers are only added to the output version.

What happens with empty lines?

By default, empty lines are skipped (not numbered), but you can change this in the options.

Is there a limit to the number of lines?

There's no hard limit, but extremely large documents may impact performance.

Can I use custom numbering formats?

Yes! Choose "Custom" from the format dropdown and enter your preferred format using {n} as the number placeholder.

Tips & Tricks

Keyboard Shortcuts

• Ctrl+Enter in the input box to process text
• Ctrl+C when output is focused to copy
• Ctrl+A to select all text

Advanced Formatting

For custom formats, you can include text before and after the number. Examples:

• Line {n}: → Line 1:, Line 2:, etc.
• Step {n} - → Step 1 -, Step 2 -, etc.
• /* {n} */ → /* 1 */, /* 2 */, etc.

Working with Code

This tool preserves indentation and whitespace, making it ideal for adding line numbers to code snippets while maintaining proper formatting.

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