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Line Number Tool

100% Free

Add or remove line numbers from pasted text — pipe, dot, colon, tab, or space separators.

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Client-Side
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Mode
Separator

Output (3 lines)

1 | function hello() {
2 |   return "world";
3 | }

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<iframe
  src="https://tools.town/embed/line-number-tool/"
  width="100%"
  height="600"
  style="border:none; border-radius:12px;"
  loading="lazy"
  title="Line Number Tool">
</iframe>

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How to Use

  1. 1 Paste text
  2. 2 Choose add or remove
  3. 3 Pick separator and start index
  4. 4 Copy the output

Features

  • Add and remove modes
  • Five separators
  • Zero-pad option
  • Client-side

Why it Matters

Bug reports and code reviews often need numbered snippets without opening an IDE.

★★★★★

Number pasted logs or code for tickets, or strip numbers before re-pasting into an editor.

Frequently Asked Questions

Remove mode?
Strips a leading number plus common separators from each line.
Start at 0?
Yes — set Start at to 0.
Diff tools?
For comparing files use Diff Checker instead.
📖

Want to go deeper?

Browse all guides →
Add Line Numbers Before Pastin
line numbers

Add Line Numbers Before Pasting into a Ticket

Number a log or code snippet so reviewers can reply with exact line references.

16 Aug 2026

5 min read

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