Can I start line numbers at a value other than 1?

The tool prefixes lines sequentially starting from 1; there is no setting to change the starting number or increment value in the current version.

Does the tool keep my original text formatting?

Yes, the output maintains the structure and content of the source material while adding the numerical prefix at the start of each line.

Is there a limit to how much text I can number?

The material does not specify a character or line limit, but very large documents may experience performance delays depending on browser capacity.

Can I use this tool for code files?

While the tool works with any plain text, it is particularly useful for reviewing documents, academic submissions, or formatted code blocks where line identification is needed.

Text & String ToolsFree Tool

Add Line Numbers

Provided byOnline Text Toolsonlinetexttools.com

Prefixes each line with its sequential line number.

Use This Tool

browser-based text

Screenshot of Add Line Numbers on Online Text Tools — onlinetexttools.comOpen the live tool →

About this tool

What Add Line Numbers does

Add Line Numbers to Text from Online Text Tools prefixes each line of pasted content with its sequential number. The service accepts plain text input and generates a numbered version where each original line begins with its corresponding identifier, preserving the document's structure and content. This makes it straightforward to track specific lines during proofreading, editing, or when creating documents that require numbered references. The tool is designed for anyone who needs to add line numbers to text quickly without installing software or dealing with complex formatting options.

Step by step

How to use the Online Text Tools Add Line Numbers

1
Paste your text into the input area on the Online Text Tools page
2
The tool automatically prefixes each line with its sequential number
3
Review the numbered output displayed on the right side of the interface
4
Use the download or copy functions to save the formatted text
5
Clear the input to start a new numbering session

Is it right for you

Best for

Writers, students, and editors who need to quickly add sequential line numbers to plain text for proofreading, academic submissions, or organizing documents where individual line identification is required.

Limitations

No option to customize the number format or starting value
Interface contains advertisements and promotional content
Tool processes only plain text, not formatted documents

Questions

Add Line Numbers FAQ

Can I start line numbers at a value other than 1?: The tool prefixes lines sequentially starting from 1; there is no setting to change the starting number or increment value in the current version.
Does the tool keep my original text formatting?: Yes, the output maintains the structure and content of the source material while adding the numerical prefix at the start of each line.
Is there a limit to how much text I can number?: The material does not specify a character or line limit, but very large documents may experience performance delays depending on browser capacity.
Can I use this tool for code files?: While the tool works with any plain text, it is particularly useful for reviewing documents, academic submissions, or formatted code blocks where line identification is needed.

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