Add Line Numbers
Add sequential line numbers to any text with configurable separators, starting number, and padding.
What is a Add Line Numbers?
A line number adder prepends a sequential number to each line of text, making it easy to reference specific lines by number.
Line numbers are essential in code reviews, legal documents, transcripts, and structured data. Manually numbering hundreds of lines is error-prone. This tool adds numbers instantly in whichever format your workflow requires.
How to Use Add Line Numbers
- 1Paste your text into the input area.
- 2Choose a separator format and set the starting number.
- 3Toggle number padding for alignment.
- 4Click 'Add Line Numbers' and copy the result.
Features
- ✓Four separator formats: period, parenthesis, colon, tab
- ✓Configurable starting number
- ✓Optional space padding for column alignment
- ✓Works on any text length
Common Use Cases
Code review reference
A developer shares a code snippet in a chat by first adding line numbers so reviewers can reference specific lines ('see line 47') without ambiguity.
Legal document preparation
A paralegal adds line numbers to a deposition transcript before sending it for review, following court filing conventions.
Creating numbered lists
A teacher converting a plain list of vocabulary words into a numbered exercise adds line numbers in the '1. ' format.