About Add Line Numbers
Prefix every line with a sequential number and a separator you control.
Text is processed entirely in your browser. Nothing is uploaded or stored after your session.
Frequently Asked Questions
Yes. Set Start at to 0 or any integer. The separator is inserted between the number and the original line.
Yes. Add Line Numbers runs entirely in your browser. Your input is not uploaded to Haivix servers or stored after you close the tab.