ToolGrid AILine Numberer
Add sequential numbers to each line, starting where you choose.
Runs entirely in your browser — your selected files are not uploaded by this tool. Device-provided speech voices may use online services.
About this free line numberer tool
Add sequential numbers to each line, starting where you choose. Text utilities make repeatable edits to drafts and lists without asking a model to rewrite the meaning. Keep a source copy when sorting, extracting or transforming data. The right operation depends on whether spaces, line breaks, case and punctuation are meaningful in your destination; review a short representative sample first.
A practical example
A concrete example uses input text: a b; starting number: 3. The result is 3. a 4. b.
Before you rely on the result
Every line is numbered, including empty lines. Prefixes change the text and may need to be removed before another import.