Line Numbering Tool

Number text with custom starts, increments, padding and separators—or strip common prefixes.

What this tool does

Add configurable line numbers or remove common numbering prefixes. Processing happens locally in your browser; entered and generated text is not uploaded or stored by this tool.

Frequently asked questions

Can empty lines remain unnumbered?

Yes. Empty lines are preserved and skipped unless Number empty lines is enabled.

Which prefixes can be removed?

The remover recognizes common leading numbers followed by a dot, parenthesis, colon, dash or whitespace.