Add markers to each line
Paste one item per line, choose a numbering style, and set the delimiter. The output keeps the original line order and prefixes each numbered line with the next marker.
The delimiter is inserted between the marker and the line text. Use ., ), : or any short string that fits the list format you need.
Empty lines
When Skip empty lines is on, blank lines remain blank and do not consume a number. Turn it off if every physical line should receive a marker.
Numbering styles
Alphabetic numbering continues past z as aa, ab, and so on. Roman numerals are generated from the numeric index, so they work best for ordinary list ranges rather than very large counts.