# Line Number Adder

Add line numbers to text or code with customizable formatting options

> Canonical page: https://elysiatools.com/en/tools/line-number-adder

- **Category:** Text Processing

- **Keywords:** line numbers, numbering, format, code, text, document, programming

## Overview

The Line Number Adder is a versatile utility designed to quickly prepend sequential numbers to your text or code blocks, making it easier to reference specific lines in documentation, logs, or programming scripts.

## Inputs

- **Text Input** (textarea): Enter your text or code here (one line per entry)...
- **Start Number** (number): Starting line number
- **Number Format** (select)
- **Number Padding** (number): Number of spaces before line number
- **Number Separator** (text): Separator between number and text
- **Skip Empty Lines** (checkbox)
- **Skip Blank Lines (whitespace only)** (checkbox)

## When to use

- When you need to reference specific lines in a long text document or log file.
- When preparing code snippets for tutorials or technical documentation.
- When you want to organize lists or data entries with clear sequential numbering.

## How it works

- Paste your text or code into the input area.
- Select your preferred numbering format, such as '1.' or '\[1\]'.
- Adjust optional settings like starting number, padding, or skipping empty lines.
- Click to generate and copy your numbered text instantly.

## Use cases

- Adding line numbers to error logs for easier debugging.
- Formatting code snippets for blog posts or technical articles.
- Creating numbered lists from raw text data.

## Frequently asked questions

### Can I start the numbering from a number other than 1?

Yes, you can use the 'Start Number' field to define your own beginning integer.

### Does this tool affect empty lines?

By default, it numbers every line, but you can enable 'Skip Empty Lines' or 'Skip Blank Lines' to ignore them.

### Can I customize the separator between the number and the text?

Yes, the 'Number Separator' field allows you to define any character or string to appear between the number and your content.

### Is there a limit to how much text I can process?

The tool is designed for standard text and code blocks; for extremely large files, we recommend processing in smaller segments.

### Does this tool modify my original code syntax?

No, it simply prepends the line number to each line of your input; it does not alter the underlying content of your code.

## Related tools

- [Line Number Remover](https://elysiatools.com/en/tools/line-number-remover): Remove line numbers from text or code with intelligent pattern recognition
- [Multiline Merger](https://elysiatools.com/en/tools/multiline-merger): Merge multiple lines into a single line with customizable separators and formatting options
- [Newline Normalizer](https://elysiatools.com/en/tools/newline-normalizer): Normalize and unify newline characters in text to consistent line ending format
- [Phone Number Extractor](https://elysiatools.com/en/tools/phone-number-extractor): Extract phone numbers from mixed text with support for multiple countries and formats
- [Prefix Remover](https://elysiatools.com/en/tools/prefix-remover): Remove common prefixes from each line with intelligent detection and customizable options
- [Suffix Remover](https://elysiatools.com/en/tools/suffix-remover): Remove common suffixes from each line with intelligent detection and customizable options
- [Text Indenter](https://elysiatools.com/en/tools/text-indenter): Quickly add indentation to each text line
- [Text Spacer - Auto Add Spaces Between Chinese and English](https://elysiatools.com/en/tools/text-spacer): Automatically add spaces between Chinese characters and English/numbers to improve readability

## Samples

- [Duplicate Line Samples](https://elysiatools.com/en/samples/text-duplicate-line-samples): Sample files with various types of duplicate lines for testing duplicate removal tools
- [Phone Number Extractor Samples](https://elysiatools.com/en/samples/phone-number-extractor): Collection of mixed text containing phone numbers from various countries for extraction testing
- [EU VAT Number Samples](https://elysiatools.com/en/samples/eu-vat): Collection of EU VAT numbers from all member states for validation testing
- [Global Phone Number Samples](https://elysiatools.com/en/samples/global-phone): Collection of phone numbers from various countries for validation testing

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