Two ways to decorate every line of text. Add line numbers prepends a running counter to each line: set any start value (including 0 or negative numbers), choose zero-padding so 1 becomes 001 for neatly aligned columns, and pick the text that separates the number from the line (a dot and space by default, but you can use a tab, a parenthesis or anything). Add prefix/suffix wraps each line with your own strings — for example a "- " prefix to make a Markdown bullet list, or a "," suffix to build a comma-terminated list.
Useful for numbering steps, generating Markdown or SQL lists, quoting code, or turning plain lines into formatted output. Everything runs locally in your browser — your text never leaves your device.