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Add Line Numbers
Add sequential line numbers to text with a configurable starting number, separator style and zero-padding.
Input
Result
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
Can I customise the numbering?＋
Yes — set the starting number, the separator between the number and the text, and zero-padding width.
What can I use it for?＋
Preparing numbered lists, referencing lines in code reviews, or creating ordered steps from plain text.
Is my text uploaded?＋
No — numbering is added locally in your browser.