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Add Line Numbers

Add numbering to each line of a text, with a custom start number and separator. In the browser.

Live·100% in your browser — no upload

What is Add Line Numbers

Add Line Numbers puts a progressive number in front of each line of a text. You can choose which number to start from, the separator and whether to pad numbers with leading zeros for a tidy output.

Processing happens in the browser, without sending the text anywhere.

How it works

  1. Paste the text.
  2. Set the starting number and the separator.
  3. Enable zero padding if you want numbers of equal width.
  4. Press Number and copy the result.

Frequently Asked Questions

Can I start from a number other than 1?
Yes. Set the 'Start from' field to any value; numbering continues from there.
What is zero padding for?
It makes numbers the same width (01, 02, … 10), useful for ordered lists and aligned output.
Is the text sent online?
No. Everything happens in the browser.

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