Add line numbers to any text instantly. Configure start number, separator style and zero padding. Free, works in your browser — no data sent to a server.
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A free online tool to add line numbers to any text — code, lists, logs or documents. Configure the start number, separator style (. ) : |), zero padding and empty line handling. Results appear instantly and run entirely in your browser — no data is sent to any server.
Paste your text into the line numbering tool
Type or paste any text into the input field. The tool accepts plain text of any length — code, lists, logs, documents or any multiline content.
Configure the start number and separator
Set the starting line number (default is 1) and choose a separator style: period, parenthesis, colon or pipe. Line numbers update instantly as you type.
Enable zero padding or skip empty lines if needed
Toggle Pad zeros to align numbers with leading zeros (01, 02…). Toggle Skip empty lines to number only non-blank lines — useful for code blocks and formatted lists.
Copy the numbered result
Click Copy to grab the entire numbered output. Paste it directly into your document, editor or wherever you need numbered lines.
Paste your text into the input field. Line numbers are added instantly to every line. You can configure the start number, separator character and zero padding — then click Copy to grab the result.
Yes. Use the Start at field to set any starting number from 0 to 9999. This is useful when numbering a continuation of a larger document or matching line numbers in a code file.
Four separators are available: period (1. line), parenthesis (1) line), colon (1: line) and pipe (1| line). Choose the style that fits your document format or coding convention.
No. All processing happens locally in your browser — no text is transmitted to any server. The tool works offline and your content stays entirely on your device.
Yes. Enable Skip empty lines to number only non-blank lines. Empty lines are preserved in the output but receive no number — useful for code blocks, poetry or structured documents with intentional blank lines.