Line Number Adder Online — Free Text Numbering Tool
Add line numbers to text online for free. Choose starting number, separator, and format. Instant formatting, no signup. For code and logs.
Add line numbers to text. Useful for code references, log analysis, and document annotation. Choose starting number and separator.
How to use Line Number Adder Online — Free Text Numbering Tool
- Paste your text into the input.
- Choose the starting number (default 1).
- Choose separator: colon, period, tab, or space.
- Copy the numbered output.
Features
- Adds sequential line numbers.
- Customizable starting number.
- Multiple separator options.
- Optional zero-padding for alignment.
FAQ
How do I add line numbers in a text editor?
Most code editors (VS Code, Sublime) show line numbers in the gutter by default. For plain text files, use this tool or the command line: 'cat -n file.txt' (Unix) or 'findstr /n .' file.txt (Windows).
Can I start line numbers from a value other than 1?
Yes. Set the starting number to any integer. This is useful when referencing a specific section of a larger file, e.g., starting at line 50 to show a code excerpt in context.
Does this work for code blocks?
Yes. Paste any code snippet and the tool adds line numbers. The output is plain text, not syntax-highlighted. For syntax highlighting with line numbers, use a code highlighting tool or markdown renderer.