Text Tool
Line Numberer
Add sequential line numbers to each line of pasted text.
Text
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Prefix each line with a running number so pasted snippets, logs, or notes are easier to reference. This is handy when preparing code samples, review notes, or step-by-step instructions.
FAQ
How do you add line numbers online?
Use this line numberer to prefix each line of pasted text with a sequential number in the browser.
When is adding line numbers useful?
It is useful for code review notes, logs, drafts, instructions, and any text you need to reference line by line.
Can you copy numbered output directly?
Yes. The numbered result can be copied immediately after generation for reuse in documents, issues, or reviews.