Add Line Numbers
Add line numbers to text online for free — each line gets a '1. ' prefix instantly. Private, in-browser, no upload.
Transform
Duplicates
Ordering
Enabled operations run on every input change, in the order above.
About Add Line Numbers
Paste text and every line gets numbered '1. 2. 3.' as you type — a quick way to produce numbered lists, reference lines in a document or index log output.
Numbering runs entirely in your browser and combines with the other line tools — dedupe first, then number the result. Nothing is uploaded.