Line Numbering Lab documentation

Add, remove, and control line numbers for snippets, transcripts, or export-ready text.

Overview

Use it when the format needs to change, not the meaning

Use Line Numbering when you need a numbered block for review or reference.

Code review

Reference exact lines when discussing snippets.

Transcript notes

Add stable line markers before you share a transcript.

Supported inputs

Bring clean source text and keep the direction straight

  • Accepts multi-line text and preserves the original order.
  • Blank lines can be kept or skipped depending on the mode.
  • Quick samples help you preview common numbering styles.

Walk through it

Follow the same sequence you see in the tool

Workflow

Add line numbers

Use this path when you want a numbered block for reference.

  1. Paste the text block.
  2. Choose the numbering style you want.
  3. Run the tool and copy the numbered output.

What you get

Check the result before you copy it into the next step

Numbered lines

A copy-ready block with line numbers added.

Blank-line handling

The result shows how empty lines were treated.

Avoid these mistakes

Small input problems create the biggest conversion errors

Numbering the wrong block

Make sure the pasted text is the one you want annotated.

Unexpected blank line handling

Check whether blank rows should stay visible.

Need a different utility? Browse the documentation hub for the rest of the published guides.
Last updated March 23, 2026