Add Line Numbers
Prefix each line with sequential numbers so text is easier to review, discuss, and share.
Number linesReview textClient-sideFree to use
Separator
Updates instantly
Try It Out
Click on an example below to load it into the tool and see how it works:
How to use
- Paste your text. Any multi-line content works.
- Choose numbering options. Set the start number and line separator style.
- Copy the numbered output. Share or review line-specific references easily.
Common use cases
- Preparing snippets for reviews or bug reports
- Adding references to transcripts or notes
- Making checklists easier to discuss line by line
Frequently asked questions
- What is this tool best used for?
- It is most useful when you need to share a snippet for review and want to reference specific lines ("see line 12"), create a numbered outline or checklist, or add sequence identifiers to a text export before loading it into another tool.
- What delimiter formats does the tool support?
- Common formats include a period followed by a space ("1. "), a colon followed by a space ("1: "), and a tab character. The choice affects whether the output looks like an ordered list or a tab-separated table column.
- Are numbers padded to align columns?
- Yes. When the total line count exceeds single digits, the tool zero-pads or space-pads the numbers so all lines start at the same column. A 200-line document would show "001" through "200" rather than misaligning at "10" or "100".
- Does my text get sent to a server?
- No. Line numbering runs entirely in your browser, so your content never leaves your device.
- What happens if I run the tool twice on the same text?
- The tool does not detect existing line numbers. Running it twice will prepend a second set of numbers to lines that already have one, producing output like "1. 1. First line". Remove existing numbers first using the Remove Line Numbers tool if you need a clean re-number.
Related tools
How to use
- Paste your text. Any multi-line content works.
- Choose numbering options. Set the start number and line separator style.
- Copy the numbered output. Share or review line-specific references easily.
Common use cases
- Preparing snippets for reviews or bug reports
- Adding references to transcripts or notes
- Making checklists easier to discuss line by line
Frequently asked questions
- What is this tool best used for?
- It is most useful when you need to share a snippet for review and want to reference specific lines ("see line 12"), create a numbered outline or checklist, or add sequence identifiers to a text export before loading it into another tool.
- What delimiter formats does the tool support?
- Common formats include a period followed by a space ("1. "), a colon followed by a space ("1: "), and a tab character. The choice affects whether the output looks like an ordered list or a tab-separated table column.
- Are numbers padded to align columns?
- Yes. When the total line count exceeds single digits, the tool zero-pads or space-pads the numbers so all lines start at the same column. A 200-line document would show "001" through "200" rather than misaligning at "10" or "100".
- Does my text get sent to a server?
- No. Line numbering runs entirely in your browser, so your content never leaves your device.
- What happens if I run the tool twice on the same text?
- The tool does not detect existing line numbers. Running it twice will prepend a second set of numbers to lines that already have one, producing output like "1. 1. First line". Remove existing numbers first using the Remove Line Numbers tool if you need a clean re-number.